(not at the head of any monitored branch or PR)
2026-03-21 18:50.20: New job: test pyml.20210924 with conf-m4.1, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29579/head (e26ca330660bcb49f8bb8e3d37703d278be8c4bd)
                              on debian-13-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29579/head" && git reset --hard e26ca330
git fetch origin master
git merge --no-edit 76bf2ed9443fdee37e6f046c6295d358be3f8598
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.14@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn conf-m4.1 1
RUN opam reinstall conf-m4.1; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'conf-m4.1' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN opam reinstall pyml.20210924; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'pyml.20210924' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test pyml.20210924) || true
RUN opam reinstall --with-test --verbose pyml.20210924; \
    res=$?; \
    test "$res" != 31 && exit "$res"; \
    export OPAMCLI=2.0; \
    build_dir=$(opam var prefix)/.opam-switch/build; \
    failed=$(ls "$build_dir"); \
    partial_fails=""; \
    for pkg in $failed; do \
    if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then \
    echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field."; \
    fi; \
    test "$pkg" != 'pyml.20210924' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1

END-OF-DOCKERFILE
docker build -f ../Dockerfile .

2026-03-21 18:50.20: Using cache hint "ocaml/opam:debian-13-ocaml-4.14@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e-conf-m4.1-pyml.20210924-e26ca330660bcb49f8bb8e3d37703d278be8c4bd"
2026-03-21 18:50.20: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.14@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e)
 (user (uid 1000) (gid 1000))
 (workdir /home/opam)
 (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
 (run (network host)
      (shell "opam init --reinit --config .opamrc-sandbox -ni"))
 (run (shell "opam option solver=builtin-0install && opam config report"))
 (env OPAMDOWNLOADJOBS 1)
 (env OPAMERRLOGLEN 0)
 (env OPAMPRECISETRACKING 1)
 (env CI true)
 (env OPAM_REPO_CI true)
 (run (shell "rm -rf opam-repository/"))
 (copy (src .) (dst opam-repository/))
 (run (shell "opam repository set-url --strict default opam-repository/"))
 (run (network host)
      (shell "opam update --depexts || true"))
 (run (shell "opam pin add -k version -yn conf-m4.1 1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall conf-m4.1;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'conf-m4.1' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall pyml.20210924;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'pyml.20210924' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test pyml.20210924) || true"))
 (run (shell  "opam reinstall --with-test --verbose pyml.20210924;\
             \n        res=$?;\
             \n        test \"$res\" != 31 && exit \"$res\";\
             \n        export OPAMCLI=2.0;\
             \n        build_dir=$(opam var prefix)/.opam-switch/build;\
             \n        failed=$(ls \"$build_dir\");\
             \n        partial_fails=\"\";\
             \n        for pkg in $failed; do\
             \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
             \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
             \n          fi;\
             \n          test \"$pkg\" != 'pyml.20210924' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-03-21 18:50.20: Waiting for resource in pool OCluster
2026-03-21 20:49.31: Waiting for worker…
2026-03-21 20:51.39: Got resource from pool OCluster
Building on eumache
All commits already cached
Updating files:  63% (11826/18509)
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Updating files: 100% (18509/18509), done.
HEAD is now at 76bf2ed944 Merge pull request #29572 from hannesm/release-letsencrypt-v2.0.0
Updating 76bf2ed944..e26ca33066
Fast-forward
Auto packing the repository in the background for optimum performance.
See "git help gc" for manual housekeeping.
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

 packages/conf-findutils/conf-findutils.1/opam                       | 2 ++
 packages/conf-m4/conf-m4.1/opam                                     | 1 +
 .../conf-mingw-w64-bzip2-x86_64/conf-mingw-w64-bzip2-x86_64.1/opam  | 4 ++--
 packages/conf-mingw-w64-gcc-x86_64/conf-mingw-w64-gcc-x86_64.1/opam | 4 ++--
 packages/conf-mingw-w64-gmp-x86_64/conf-mingw-w64-gmp-x86_64.1/opam | 4 ++--
 .../conf-mingw-w64-pkgconf-x86_64.1/opam                            | 6 +++---
 .../conf-mingw-w64-zlib-x86_64/conf-mingw-w64-zlib-x86_64.1/opam    | 4 ++--
 .../conf-mingw-w64-zstd-x86_64/conf-mingw-w64-zstd-x86_64.1/opam    | 4 ++--
 packages/conf-perl/conf-perl.2/opam                                 | 1 +
 9 files changed, 17 insertions(+), 13 deletions(-)

(from ocaml/opam:debian-13-ocaml-4.14@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e)
Unable to find image 'ocaml/opam:debian-13-ocaml-4.14@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e' locally
docker.io/ocaml/opam@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e: Pulling from ocaml/opam
866771c43bf5: Already exists
1e49bea09367: Already exists
e793768537e6: Already exists
ed323d3d481a: Already exists
7df34a5cd5f1: Already exists
fd712d3eb935: Already exists
4b9fb8c99118: Already exists
9d9a01948b94: Already exists
0f1514f90b32: Already exists
e1ec5a753447: Already exists
03cc323e2f71: Already exists
c09c08ea9749: Already exists
b36b619f8e6b: Already exists
195344ca5274: Already exists
228ee78582a6: Already exists
504bde1c25b3: Already exists
9d8b1356c89f: Already exists
9d8b1356c89f: Already exists
568fb6dda155: Already exists
c499c9198aea: Already exists
048e5e358118: Already exists
871ca48eb45d: Already exists
4f4fb700ef54: Already exists
a5a2568b9df9: Already exists
068cf3106ac8: Already exists
559f54ec9b29: Already exists
798ffd96fde5: Already exists
e9a891bf80d7: Already exists
d720cfe12674: Already exists
c81c932f4a91: Already exists
79f24fa3bb11: Already exists
8c1debcd8c20: Already exists
1bb2cfea7250: Already exists
2b3d3ca75e4c: Already exists
557cacaf263c: Already exists
d10483022eef: Already exists
7b62a90d8223: Already exists
28ce8ea66e72: Already exists
d975909ea717: Already exists
5c215c69c247: Already exists
e7c082452a54: Already exists
d1a4c61b613c: Already exists
0195a6679dc6: Already exists
410dfa46d7be: Already exists
b7b221f39cbe: Already exists
Digest: sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e
Status: Downloaded newer image for ocaml/opam@sha256:37323dc71cac48a3e4688e16b45b95486f3cc440c55ab3f83114e8973362f41e
2026-03-21 20:51.47 ---> using "32cd5b5baf995c02200cf270da597dbb25becd220af2c200c00b8b241a742195" from cache

/: (user (uid 1000) (gid 1000))

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-03-21 20:51.47 ---> using "f3ed7bdbef828c9c0b079b10505c5f05c3c9adcca11ce5bf2dac2a4183e099d8" from cache

/home/opam: (run (network host)
                 (shell "opam init --reinit --config .opamrc-sandbox -ni"))
Configuring from /home/opam/.opamrc-sandbox, then /home/opam/.opamrc, and finally from built-in defaults.
Checking for available remotes: rsync and local, git.
  - you won't be able to use mercurial repositories unless you install the hg command on your system.
  - you won't be able to use darcs repositories unless you install the darcs command on your system.

Continue? [Y/n] y
This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.2, which can't be reverted.
You may want to back it up before going further.

Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-03-21 20:51.47 ---> using "5bf6adb7b45bb7e0c215b8f509c71a8dae73a9a2060efcc27df9d4ef6c6d3350" from cache

/home/opam: (run (shell "opam option solver=builtin-0install && opam config report"))
Set to 'builtin-0install' the field solver in global configuration
# opam config report
# opam-version         2.5.0
# self-upgrade         no
# system               arch=x86_64 os=linux os-distribution=debian os-version=13
# solver               builtin-0install
# install-criteria     -changed,-count[avoid-version,solution]
# upgrade-criteria     -count[avoid-version,solution]
# jobs                 71
# repositories         1 (version-controlled)
# pinned               1 (version)
# current-switch       4.14
# invariant            ["ocaml-base-compiler" {= "4.14.2"}]
# compiler-packages    ocaml-base-compiler.4.14.2, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.14/lib/ocaml/stublibs:/home/opam/.opam/4.14/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.14.2
2026-03-21 20:51.47 ---> using "0546f18fa5979677ee22eb9f2fcf19ab371564e845d317c2c70e41dd97dc22dd" from cache

/home/opam: (env OPAMDOWNLOADJOBS 1)

/home/opam: (env OPAMERRLOGLEN 0)

/home/opam: (env OPAMPRECISETRACKING 1)

/home/opam: (env CI true)

/home/opam: (env OPAM_REPO_CI true)

/home/opam: (run (shell "rm -rf opam-repository/"))
2026-03-21 20:51.47 ---> using "0a7188cbe95f4fe0ff26694977eb8794c975bdb534078da98a06d6c7373289b4" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-03-21 20:51.49 ---> using "64b0b1c5956282be62155632b73d49a512770a013b8177e3bd97cfd5e30573f3" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-03-21 20:51.49 ---> using "5bbc18b187922ee43ab28303966f314ef55d58cc243daaa1a62d891c4651643d" from cache

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Get:1 http://deb.debian.org/debian trixie InRelease [140 kB]
- Get:2 http://deb.debian.org/debian trixie-updates InRelease [47.3 kB]
- Get:3 http://deb.debian.org/debian-security trixie-security InRelease [43.4 kB]
- Get:4 http://deb.debian.org/debian trixie/main amd64 Packages [9671 kB]
- Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [113 kB]
- Fetched 10.0 MB in 3min 8s (53.1 kB/s)
- Reading package lists...
- 
2026-03-21 20:51.49 ---> using "26c4cf2d2932a5613ac2db8ae671186642ac802d5db4f44c87661f5676362dec" from cache

/home/opam: (run (shell "opam pin add -k version -yn conf-m4.1 1"))
conf-m4 is now pinned to version 1
2026-03-21 20:51.49 ---> using "1f550c38f5bac1e80ecbaf30222372f1ba650bb720c00e72e38ddd72856eafa1" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall conf-m4.1;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'conf-m4.1' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
conf-m4.1 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 1 package
  - install conf-m4 1 (pinned)

The following system packages will first need to be installed:
    m4

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>

opam believes some required external dependencies are missing. opam can:
> 1. Run apt-get to install them (may need root/sudo access)
  2. Display the recommended apt-get command and wait while you run it manually (e.g. in another terminal)
  3. Continue anyway, and, upon success, permanently register that this external dependency is present, but not detectable
  4. Abort the installation

[1/2/3/4] 1

+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "m4"
- Selecting previously unselected package m4.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
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(Reading database ... 75%
(Reading database ... 80%
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(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 20623 files and directories currently installed.)
- Preparing to unpack .../archives/m4_1.4.19-8_amd64.deb ...
- Unpacking m4 (1.4.19-8) ...
- Setting up m4 (1.4.19-8) ...

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed conf-m4.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-03-21 20:51.49 ---> using "e0baf65572c68338ca7ad6c8769e7aeb1e3d03e85ea3541782477400153674e3" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall pyml.20210924;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'pyml.20210924' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
pyml.20210924 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 5 packages
  - install conf-autoconf 0.2      [required by stdcompat]
  - install dune          3.22.0   [required by pyml]
  - install ocamlfind     1.9.8    [required by pyml]
  - install pyml          20210924
  - install stdcompat     20.1     [required by pyml]

The following system packages will first need to be installed:
    autoconf

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>

opam believes some required external dependencies are missing. opam can:
> 1. Run apt-get to install them (may need root/sudo access)
  2. Display the recommended apt-get command and wait while you run it manually (e.g. in another terminal)
  3. Continue anyway, and, upon success, permanently register that this external dependency is present, but not detectable
  4. Abort the installation

[1/2/3/4] 1

+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "autoconf"
- Selecting previously unselected package autoconf.
- (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
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- update-alternatives: using /usr/bin/automake-1.17 to provide /usr/bin/automake (automake) in auto mode

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed conf-autoconf.0.2
-> retrieved dune.3.22.0  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved pyml.20210924  (cached)
-> retrieved stdcompat.20.1  (cached)
-> installed ocamlfind.1.9.8
-> installed dune.3.22.0
-> installed stdcompat.20.1
-> installed pyml.20210924
Done.
# To update the current shell environment, run: eval $(opam env)
2026-03-21 20:52.58 ---> saved as "b3f2419ed71860b7d9fd2a134041a2fe34f9e6016bd0b09b15a09a5ba2f420e2"

/home/opam: (run (network host)
                 (shell "(opam reinstall --with-test pyml.20210924) || true"))
The following actions will be performed:
=== recompile 1 package
  - recompile pyml              20210924
=== install 1 package
  - install   conf-python-3-dev 1        [required by pyml]

The following system packages will first need to be installed:
    python3-dev

<><> Handling external dependencies <><><><><><><><><><><><><><><><><><><><><><>

opam believes some required external dependencies are missing. opam can:
> 1. Run apt-get to install them (may need root/sudo access)
  2. Display the recommended apt-get command and wait while you run it manually (e.g. in another terminal)
  3. Continue anyway, and, upon success, permanently register that this external dependency is present, but not detectable
  4. Abort the installation

[1/2/3/4] 1

+ /usr/bin/sudo "apt-get" "install" "-qq" "-yy" "python3-dev"
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- Adding 'diversion of /lib/x86_64-linux-gnu/libhistory.so.8 to /lib/x86_64-linux-gnu/libhistory.so.8.usr-is-merged by libreadline8t64'
- Adding 'diversion of /lib/x86_64-linux-gnu/libhistory.so.8.2 to /lib/x86_64-linux-gnu/libhistory.so.8.2.usr-is-merged by libreadline8t64'
- Adding 'diversion of /lib/x86_64-linux-gnu/libreadline.so.8 to /lib/x86_64-linux-gnu/libreadline.so.8.usr-is-merged by libreadline8t64'
- Adding 'diversion of /lib/x86_64-linux-gnu/libreadline.so.8.2 to /lib/x86_64-linux-gnu/libreadline.so.8.2.usr-is-merged by libreadline8t64'
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- Setting up libjs-jquery (3.6.1+dfsg+~3.5.14-1) ...
- Setting up readline-common (8.2-6) ...
- Setting up libjs-underscore (1.13.4~dfsg+~1.11.4-3) ...
- Setting up libjs-sphinxdoc (8.1.3-5) ...
- Setting up libreadline8t64:amd64 (8.2-6) ...
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- Setting up libpython3.13:amd64 (3.13.5-2) ...
- Setting up python3.13 (3.13.5-2) ...
- Setting up python3 (3.13.5-1) ...
- running python rtupdate hooks for python3.13...
- running python post-rtupdate hooks for python3.13...
- Setting up libpython3.13-dev:amd64 (3.13.5-2) ...
- Setting up libpython3-dev:amd64 (3.13.5-1) ...
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- Processing triggers for libc-bin (2.41-12+deb13u1) ...

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved conf-python-3-dev.1  (2 extra sources)
-> retrieved conf-python-3-dev.1  (2 extra sources)
-> retrieved pyml.20210924  (https://opam.ocaml.org/cache)
-> removed   pyml.20210924
-> installed conf-python-3-dev.1
[ERROR] The compilation of pyml.20210924 failed at "dune build -p pyml -j 71 @install @runtest".

#=== ERROR while compiling pyml.20210924 ======================================#
# context              2.5.0 | linux/x86_64 | ocaml-base-compiler.4.14.2 | file:///home/opam/opam-repository
# path                 ~/.opam/4.14/.opam-switch/build/pyml.20210924
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p pyml -j 71 @install @runtest
# exit-code            1
# env-file             ~/.opam/log/pyml-7-3ccea3.env
# output-file          ~/.opam/log/pyml-7-3ccea3.out
### output ###
# (cd _build/default && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -I /home/opam/.opam/4.14/lib/ocaml -I /home/opam/.opam/4.14/lib/stdcompat -o numpy_stubs.o -c numpy_stubs.c)
# numpy_stubs.c: In function 'pyarray_of_bigarray_wrapper':
# numpy_stubs.c:36:13: warning: "BIGARRAY_KIND_MASK" is deprecated: use "CAML_BA_KIND_MASK" instead
#    36 |     switch (flags & BIGARRAY_KIND_MASK) {
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                            
# numpy_stubs.c:62:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    62 |         failwith("Caml integers are unsupported for NumPy array");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     
# numpy_stubs.c:79:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    79 |         failwith("Unsupported bigarray kind for NumPy array");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~         
# numpy_stubs.c:90:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    90 |         failwith("Unsupported bigarray layout for NumPy array");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~       
# numpy_stubs.c: In function 'bigarray_of_pyarray_wrapper':
# numpy_stubs.c:163:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   163 |         failwith("Unsupported NumPy kind for bigarray");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~               
# numpy_stubs.c:174:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   174 |         failwith("Unsupported NumPy layout for bigarray");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~             
# (cd _build/default && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -I /home/opam/.opam/4.14/lib/ocaml -I /home/opam/.opam/4.14/lib/stdcompat -o pyml_stubs.o -c pyml_stubs.c)
# pyml_stubs.c: In function 'xmalloc':
# pyml_stubs.c:26:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    26 |         failwith("Virtual memory exhausted\n");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                        
# pyml_stubs.c: In function 'resolve':
# pyml_stubs.c:337:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   337 |         failwith(msg);
#       |             ^~~~~~~~~~                                                 
# pyml_stubs.c: In function 'pyml_assert_initialized':
# pyml_stubs.c:549:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   549 |         failwith("Run 'Py.initialize ()' first");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                      
# pyml_stubs.c: In function 'pyml_assert_python2':
# pyml_stubs.c:558:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   558 |         failwith("Python 2 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
# pyml_stubs.c: In function 'pyml_assert_ucs2':
# pyml_stubs.c:567:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   567 |         failwith("Python with UCS2 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                           
# pyml_stubs.c: In function 'pyml_assert_ucs4':
# pyml_stubs.c:576:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   576 |         failwith("Python with UCS4 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                           
# pyml_stubs.c: In function 'pyml_assert_python3':
# pyml_stubs.c:585:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   585 |         failwith("Python 3 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
# pyml_stubs.c: In function 'pyml_check_symbol_available':
# pyml_stubs.c:596:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   596 |           failwith("Symbol unavailable with this version of Python.\n");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# pyml_stubs.c:602:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   602 |           failwith("Symbol unavailable with this version of Python.\n");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# pyml_stubs.c:605:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   605 |         failwith(msg);
#       |             ^~~~~~~~~~                                                 
# pyml_stubs.c: In function 'py_load_library':
# pyml_stubs.c:681:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   681 |             failwith(get_library_error());
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                             
# pyml_stubs.c:689:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   689 |         failwith("No Python symbol");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~                                  
# pyml_stubs.c:762:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   762 |             failwith("py_debug");
#       |             ^~~~~~~~~~~~~~~~~~~~~                                      
# pyml_stubs.c:766:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   766 |             failwith("PyTuple_New");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
# pyml_stubs.c:769:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   769 |             failwith("PyTuple_SetItem");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~                               
# pyml_stubs.c:774:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   774 |             failwith("PyEval_CallObjectWithKeywords");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                 
# pyml_stubs.c:783:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   783 |             failwith("AsLong");
#       |             ^~~~~~~~~~~~~~~~~~~                                        
# pyml_stubs.c: In function 'py_unsetenv':
# pyml_stubs.c:832:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   832 |         failwith(strerror(errno));
#       |             ^~~~~~~~~~~~~~~~~~~~~~                                     
# pyml_stubs.c: In function 'Python27_PyCapsule_IsValid_wrapper':
# pyml_stubs.c:1451:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#  1451 |         failwith("PyCapsule_IsValid is only available in Python >2.7");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# In file included from pyml_stubs.c:1477:
# pyml_wrappers.inc: In function 'Python_PyImport_GetMagicNumber_wrapper':
# pyml_wrappers.inc:1030:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  1030 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python_PyLong_AsLong_wrapper':
# pyml_wrappers.inc:1169:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  1169 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python_PyObject_Hash_wrapper':
# pyml_wrappers.inc:1937:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  1937 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python2_PyInt_AsLong_wrapper':
# pyml_wrappers.inc:2826:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  2826 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python2_PyInt_GetMax_wrapper':
# pyml_wrappers.inc:2847:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  2847 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# File "dune", line 44, characters 8-19:
# 44 |   (name numpy_tests)
#              ^^^^^^^^^^^
# (cd _build/default && ./numpy_tests.exe)
# Environment variables:
# PATH=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924/_build/install/default/bin:/home/opam/.opam/4.14/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# PYTHONHOME not set
# DYLD_LIBRARY_PATH not set
# DYLD_FALLBACK_LIBRARY_PATH not set
# Initializing library...
# Temporary set PYTHONPATH=":/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages".
# Trying to load "/lib/x86_64-linux-gnu/libpython3.13.so.1.0".
# Failed: "Cannot resolve _PyObject_NextNotImplemented.
# ".
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
# File "dune", line 49, characters 8-18:
# 49 |   (name pyml_tests)
#              ^^^^^^^^^^
# (cd _build/default && ./pyml_tests.exe)
# Environment variables:
# PATH=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924/_build/install/default/bin:/home/opam/.opam/4.14/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# PYTHONHOME not set
# DYLD_LIBRARY_PATH not set
# DYLD_FALLBACK_LIBRARY_PATH not set
# Initializing library...
# Temporary set PYTHONPATH=":/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages".
# Trying to load "/lib/x86_64-linux-gnu/libpython3.13.so.1.0".
# Failed: "Cannot resolve _PyObject_NextNotImplemented.
# ".
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build pyml 20210924
+- 
+- The following changes have been performed
| - remove  pyml              20210924
| - install conf-python-3-dev 1
+- 
# To update the current shell environment, run: eval $(opam env)

The former state can be restored with:
    /usr/bin/opam switch import "/home/opam/.opam/4.14/.opam-switch/backup/state-20260321205300.export"
Or you can retry to install your package selection with:
    /usr/bin/opam install --restore
2026-03-21 20:53.31 ---> saved as "ea91d0a0252f9cb4530513191b0fd66782216c41d8a4aa679bab5f2f5ce173c1"

/home/opam: (run (shell  "opam reinstall --with-test --verbose pyml.20210924;\
                        \n        res=$?;\
                        \n        test \"$res\" != 31 && exit \"$res\";\
                        \n        export OPAMCLI=2.0;\
                        \n        build_dir=$(opam var prefix)/.opam-switch/build;\
                        \n        failed=$(ls \"$build_dir\");\
                        \n        partial_fails=\"\";\
                        \n        for pkg in $failed; do\
                        \n          if opam show -f x-ci-accept-failures: \"$pkg\" | grep -qF \"\\\"debian-13\\\"\"; then\
                        \n            echo \"A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\";\
                        \n          fi;\
                        \n          test \"$pkg\" != 'pyml.20210924' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
pyml.20210924 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 1 package
  - install pyml 20210924

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  1/3: [pyml.20210924: extract]
-> retrieved pyml.20210924  (cached)
Processing  2/3: [pyml: dune build]
+ /home/opam/.opam/opam-init/hooks/sandbox.sh "build" "dune" "build" "-p" "pyml" "-j" "71" "@install" "@runtest" (CWD=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924)
- (cd _build/default && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -I /home/opam/.opam/4.14/lib/ocaml -I /home/opam/.opam/4.14/lib/stdcompat -o numpy_stubs.o -c numpy_stubs.c)
- numpy_stubs.c: In function 'pyarray_of_bigarray_wrapper':
- numpy_stubs.c:36:13: warning: "BIGARRAY_KIND_MASK" is deprecated: use "CAML_BA_KIND_MASK" instead
-    36 |     switch (flags & BIGARRAY_KIND_MASK) {
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                            
- numpy_stubs.c:62:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-    62 |         failwith("Caml integers are unsupported for NumPy array");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     
- numpy_stubs.c:79:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-    79 |         failwith("Unsupported bigarray kind for NumPy array");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~         
- numpy_stubs.c:90:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-    90 |         failwith("Unsupported bigarray layout for NumPy array");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~       
- numpy_stubs.c: In function 'bigarray_of_pyarray_wrapper':
- numpy_stubs.c:163:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   163 |         failwith("Unsupported NumPy kind for bigarray");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~               
- numpy_stubs.c:174:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   174 |         failwith("Unsupported NumPy layout for bigarray");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~             
- (cd _build/default && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -I /home/opam/.opam/4.14/lib/ocaml -I /home/opam/.opam/4.14/lib/stdcompat -o pyml_stubs.o -c pyml_stubs.c)
- pyml_stubs.c: In function 'xmalloc':
- pyml_stubs.c:26:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-    26 |         failwith("Virtual memory exhausted\n");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                        
- pyml_stubs.c: In function 'resolve':
- pyml_stubs.c:337:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   337 |         failwith(msg);
-       |             ^~~~~~~~~~                                                 
- pyml_stubs.c: In function 'pyml_assert_initialized':
- pyml_stubs.c:549:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   549 |         failwith("Run 'Py.initialize ()' first");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                      
- pyml_stubs.c: In function 'pyml_assert_python2':
- pyml_stubs.c:558:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   558 |         failwith("Python 2 needed");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
- pyml_stubs.c: In function 'pyml_assert_ucs2':
- pyml_stubs.c:567:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   567 |         failwith("Python with UCS2 needed");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                           
- pyml_stubs.c: In function 'pyml_assert_ucs4':
- pyml_stubs.c:576:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   576 |         failwith("Python with UCS4 needed");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                           
- pyml_stubs.c: In function 'pyml_assert_python3':
- pyml_stubs.c:585:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   585 |         failwith("Python 3 needed");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
- pyml_stubs.c: In function 'pyml_check_symbol_available':
- pyml_stubs.c:596:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   596 |           failwith("Symbol unavailable with this version of Python.\n");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- pyml_stubs.c:602:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   602 |           failwith("Symbol unavailable with this version of Python.\n");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- pyml_stubs.c:605:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   605 |         failwith(msg);
-       |             ^~~~~~~~~~                                                 
- pyml_stubs.c: In function 'py_load_library':
- pyml_stubs.c:681:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   681 |             failwith(get_library_error());
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                             
- pyml_stubs.c:689:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   689 |         failwith("No Python symbol");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~                                  
- pyml_stubs.c:762:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   762 |             failwith("py_debug");
-       |             ^~~~~~~~~~~~~~~~~~~~~                                      
- pyml_stubs.c:766:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   766 |             failwith("PyTuple_New");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
- pyml_stubs.c:769:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   769 |             failwith("PyTuple_SetItem");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~                               
- pyml_stubs.c:774:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   774 |             failwith("PyEval_CallObjectWithKeywords");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                 
- pyml_stubs.c:783:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   783 |             failwith("AsLong");
-       |             ^~~~~~~~~~~~~~~~~~~                                        
- pyml_stubs.c: In function 'py_unsetenv':
- pyml_stubs.c:832:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-   832 |         failwith(strerror(errno));
-       |             ^~~~~~~~~~~~~~~~~~~~~~                                     
- pyml_stubs.c: In function 'Python27_PyCapsule_IsValid_wrapper':
- pyml_stubs.c:1451:13: warning: "failwith" is deprecated: use "caml_failwith" instead
-  1451 |         failwith("PyCapsule_IsValid is only available in Python >2.7");
-       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- In file included from pyml_stubs.c:1477:
- pyml_wrappers.inc: In function 'Python_PyImport_GetMagicNumber_wrapper':
- pyml_wrappers.inc:1030:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
-  1030 |     CAMLreturn(copy_int64(result));
-       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
- pyml_wrappers.inc: In function 'Python_PyLong_AsLong_wrapper':
- pyml_wrappers.inc:1169:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
-  1169 |     CAMLreturn(copy_int64(result));
-       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
- pyml_wrappers.inc: In function 'Python_PyObject_Hash_wrapper':
- pyml_wrappers.inc:1937:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
-  1937 |     CAMLreturn(copy_int64(result));
-       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
- pyml_wrappers.inc: In function 'Python2_PyInt_AsLong_wrapper':
- pyml_wrappers.inc:2826:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
-  2826 |     CAMLreturn(copy_int64(result));
-       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
- pyml_wrappers.inc: In function 'Python2_PyInt_GetMax_wrapper':
- pyml_wrappers.inc:2847:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
-  2847 |     CAMLreturn(copy_int64(result));
-       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
- File "dune", line 44, characters 8-19:
- 44 |   (name numpy_tests)
-              ^^^^^^^^^^^
- (cd _build/default && ./numpy_tests.exe)
- Environment variables:
- PATH=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924/_build/install/default/bin:/home/opam/.opam/4.14/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
- PYTHONHOME not set
- DYLD_LIBRARY_PATH not set
- DYLD_FALLBACK_LIBRARY_PATH not set
- Initializing library...
- Temporary set PYTHONPATH=":/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages".
- Trying to load "/lib/x86_64-linux-gnu/libpython3.13.so.1.0".
- Failed: "Cannot resolve _PyObject_NextNotImplemented.
- ".
- Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
- File "dune", line 49, characters 8-18:
- 49 |   (name pyml_tests)
-              ^^^^^^^^^^
- (cd _build/default && ./pyml_tests.exe)
- Environment variables:
- PATH=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924/_build/install/default/bin:/home/opam/.opam/4.14/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
- PYTHONHOME not set
- DYLD_LIBRARY_PATH not set
- DYLD_FALLBACK_LIBRARY_PATH not set
- Initializing library...
- Temporary set PYTHONPATH=":/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages".
- Trying to load "/lib/x86_64-linux-gnu/libpython3.13.so.1.0".
- Failed: "Cannot resolve _PyObject_NextNotImplemented.
- ".
- Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")


<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build pyml 20210924
+- 
- No changes have been performed
# To update the current shell environment, run: eval $(opam env)
[ERROR] The compilation of pyml.20210924 failed at "dune build -p pyml -j 71 @install @runtest".

#=== ERROR while compiling pyml.20210924 ======================================#
# context              2.5.0 | linux/x86_64 | ocaml-base-compiler.4.14.2 | file:///home/opam/opam-repository
# path                 ~/.opam/4.14/.opam-switch/build/pyml.20210924
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p pyml -j 71 @install @runtest
# exit-code            1
# env-file             ~/.opam/log/pyml-8-fb0936.env
# output-file          ~/.opam/log/pyml-8-fb0936.out
### output ###
# (cd _build/default && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -I /home/opam/.opam/4.14/lib/ocaml -I /home/opam/.opam/4.14/lib/stdcompat -o numpy_stubs.o -c numpy_stubs.c)
# numpy_stubs.c: In function 'pyarray_of_bigarray_wrapper':
# numpy_stubs.c:36:13: warning: "BIGARRAY_KIND_MASK" is deprecated: use "CAML_BA_KIND_MASK" instead
#    36 |     switch (flags & BIGARRAY_KIND_MASK) {
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                            
# numpy_stubs.c:62:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    62 |         failwith("Caml integers are unsupported for NumPy array");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     
# numpy_stubs.c:79:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    79 |         failwith("Unsupported bigarray kind for NumPy array");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~         
# numpy_stubs.c:90:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    90 |         failwith("Unsupported bigarray layout for NumPy array");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~       
# numpy_stubs.c: In function 'bigarray_of_pyarray_wrapper':
# numpy_stubs.c:163:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   163 |         failwith("Unsupported NumPy kind for bigarray");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~               
# numpy_stubs.c:174:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   174 |         failwith("Unsupported NumPy layout for bigarray");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~             
# (cd _build/default && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -pthread -fPIC -g -I /home/opam/.opam/4.14/lib/ocaml -I /home/opam/.opam/4.14/lib/stdcompat -o pyml_stubs.o -c pyml_stubs.c)
# pyml_stubs.c: In function 'xmalloc':
# pyml_stubs.c:26:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#    26 |         failwith("Virtual memory exhausted\n");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                        
# pyml_stubs.c: In function 'resolve':
# pyml_stubs.c:337:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   337 |         failwith(msg);
#       |             ^~~~~~~~~~                                                 
# pyml_stubs.c: In function 'pyml_assert_initialized':
# pyml_stubs.c:549:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   549 |         failwith("Run 'Py.initialize ()' first");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                      
# pyml_stubs.c: In function 'pyml_assert_python2':
# pyml_stubs.c:558:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   558 |         failwith("Python 2 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
# pyml_stubs.c: In function 'pyml_assert_ucs2':
# pyml_stubs.c:567:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   567 |         failwith("Python with UCS2 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                           
# pyml_stubs.c: In function 'pyml_assert_ucs4':
# pyml_stubs.c:576:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   576 |         failwith("Python with UCS4 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                           
# pyml_stubs.c: In function 'pyml_assert_python3':
# pyml_stubs.c:585:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   585 |         failwith("Python 3 needed");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
# pyml_stubs.c: In function 'pyml_check_symbol_available':
# pyml_stubs.c:596:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   596 |           failwith("Symbol unavailable with this version of Python.\n");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# pyml_stubs.c:602:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   602 |           failwith("Symbol unavailable with this version of Python.\n");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# pyml_stubs.c:605:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   605 |         failwith(msg);
#       |             ^~~~~~~~~~                                                 
# pyml_stubs.c: In function 'py_load_library':
# pyml_stubs.c:681:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   681 |             failwith(get_library_error());
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                             
# pyml_stubs.c:689:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   689 |         failwith("No Python symbol");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~                                  
# pyml_stubs.c:762:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   762 |             failwith("py_debug");
#       |             ^~~~~~~~~~~~~~~~~~~~~                                      
# pyml_stubs.c:766:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   766 |             failwith("PyTuple_New");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~                                   
# pyml_stubs.c:769:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   769 |             failwith("PyTuple_SetItem");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~                               
# pyml_stubs.c:774:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   774 |             failwith("PyEval_CallObjectWithKeywords");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~                 
# pyml_stubs.c:783:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   783 |             failwith("AsLong");
#       |             ^~~~~~~~~~~~~~~~~~~                                        
# pyml_stubs.c: In function 'py_unsetenv':
# pyml_stubs.c:832:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#   832 |         failwith(strerror(errno));
#       |             ^~~~~~~~~~~~~~~~~~~~~~                                     
# pyml_stubs.c: In function 'Python27_PyCapsule_IsValid_wrapper':
# pyml_stubs.c:1451:13: warning: "failwith" is deprecated: use "caml_failwith" instead
#  1451 |         failwith("PyCapsule_IsValid is only available in Python >2.7");
#       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# In file included from pyml_stubs.c:1477:
# pyml_wrappers.inc: In function 'Python_PyImport_GetMagicNumber_wrapper':
# pyml_wrappers.inc:1030:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  1030 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python_PyLong_AsLong_wrapper':
# pyml_wrappers.inc:1169:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  1169 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python_PyObject_Hash_wrapper':
# pyml_wrappers.inc:1937:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  1937 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python2_PyInt_AsLong_wrapper':
# pyml_wrappers.inc:2826:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  2826 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# pyml_wrappers.inc: In function 'Python2_PyInt_GetMax_wrapper':
# pyml_wrappers.inc:2847:13: warning: "copy_int64" is deprecated: use "caml_copy_int64" instead
#  2847 |     CAMLreturn(copy_int64(result));
#       |             ^~~~~~~~~~~~~~~~~~~~~~~                                        
# File "dune", line 44, characters 8-19:
# 44 |   (name numpy_tests)
#              ^^^^^^^^^^^
# (cd _build/default && ./numpy_tests.exe)
# Environment variables:
# PATH=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924/_build/install/default/bin:/home/opam/.opam/4.14/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# PYTHONHOME not set
# DYLD_LIBRARY_PATH not set
# DYLD_FALLBACK_LIBRARY_PATH not set
# Initializing library...
# Temporary set PYTHONPATH=":/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages".
# Trying to load "/lib/x86_64-linux-gnu/libpython3.13.so.1.0".
# Failed: "Cannot resolve _PyObject_NextNotImplemented.
# ".
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
# File "dune", line 49, characters 8-18:
# 49 |   (name pyml_tests)
#              ^^^^^^^^^^
# (cd _build/default && ./pyml_tests.exe)
# Environment variables:
# PATH=/home/opam/.opam/4.14/.opam-switch/build/pyml.20210924/_build/install/default/bin:/home/opam/.opam/4.14/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
# PYTHONHOME not set
# DYLD_LIBRARY_PATH not set
# DYLD_FALLBACK_LIBRARY_PATH not set
# Initializing library...
# Temporary set PYTHONPATH=":/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages".
# Trying to load "/lib/x86_64-linux-gnu/libpython3.13.so.1.0".
# Failed: "Cannot resolve _PyObject_NextNotImplemented.
# ".
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")

'opam reinstall --with-test --verbose pyml.20210924' failed.
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
[WARNING] OPAMCONFIRMLEVEL was ignored because CLI 2.0 was requested and it was introduced in 2.1.
"/usr/bin/env" "bash" "-c" "opam reinstall --with-test --verbose pyml.20210924;
        res=$?;
        test "$res" != 31 && exit "$res";
        export OPAMCLI=2.0;
        build_dir=$(opam var prefix)/.opam-switch/build;
        failed=$(ls "$build_dir");
        partial_fails="";
        for pkg in $failed; do
          if opam show -f x-ci-accept-failures: "$pkg" | grep -qF "\"debian-13\""; then
            echo "A package failed and has been disabled for CI using the 'x-ci-accept-failures' field.";
          fi;
          test "$pkg" != 'pyml.20210924' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 1
2026-03-21 20:54.23: Job failed: Failed: Build failed
2026-03-21 20:54.23: Log analysis:
2026-03-21 20:54.23: >>> 
[ERROR] The compilation of pyml.20210924 failed at "dune build -p pyml -j 71 @install @runtest".
 (score = 20)
2026-03-21 20:54.23: >>> 
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
 (score = 35)
2026-03-21 20:54.23: >>> 
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
 (score = 35)
2026-03-21 20:54.23: >>> 
[ERROR] The compilation of pyml.20210924 failed at "dune build -p pyml -j 71 @install @runtest".
 (score = 20)
2026-03-21 20:54.23: >>> 
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
 (score = 35)
2026-03-21 20:54.23: >>> 
# Fatal error: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")
 (score = 35)
2026-03-21 20:54.23: exception Failure("Py.find_library: unable to find the Python library [/lib/x86_64-linux-gnu/libpython3.13.so.1.0 returned Cannot resolve _PyObject_NextNotImplemented.\n]")