(for PR #29579)

2026-03-21 18:37.03: New job: build conf-m4.1, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29579/head (e26ca330660bcb49f8bb8e3d37703d278be8c4bd)
                              on opensuse-16.0-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29579/head" && git reset --hard e26ca330
git fetch origin master
git merge --no-edit 76bf2ed9443fdee37e6f046c6295d358be3f8598
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn conf-m4.1 1
RUN opam reinstall conf-m4.1; \
    res=$?; \
    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 "\"opensuse-16.0\""; 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

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

2026-03-21 18:37.03: Using cache hint "ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324-conf-m4.1-e26ca330660bcb49f8bb8e3d37703d278be8c4bd"
2026-03-21 18:37.03: Using OBuilder spec:
((from ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324)
 (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 \"\\\"opensuse-16.0\\\"\"; 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"))
)

2026-03-21 18:37.03: Waiting for resource in pool OCluster
2026-03-21 18:41.15: Waiting for worker…
2026-03-21 18:43.12: Got resource from pool OCluster
Building on toxis.caelum.ci.dev
All commits already cached
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:opensuse-16.0-ocaml-4.14@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324)
Unable to find image 'ocaml/opam:opensuse-16.0-ocaml-4.14@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324' locally
docker.io/ocaml/opam@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324: Pulling from ocaml/opam
64cfa2a65095: Already exists
7b581e71db22: Already exists
0d9a5a107b9b: Already exists
357b95083b04: Already exists
3658f63fcffa: Already exists
5f00ec28670a: Already exists
d5429ba7ea96: Already exists
1e2abec3e48a: Already exists
a459d1a5da3b: Already exists
2168339905af: Already exists
165752543076: Already exists
72d1a62a8420: Already exists
7a8e0b1e89ad: Already exists
f363e37deee9: Already exists
aa8207662583: Already exists
7993a7002f90: Already exists
b555b5cbc6e7: Already exists
00bcd96691ba: Already exists
e7d8a4a03644: Already exists
4f4fb700ef54: Already exists
b84d3b76e0e8: Already exists
32f29cbbfa56: Already exists
d591940d5bfc: Already exists
a9c4ab92f613: Already exists
c84b77db6559: Already exists
4a817e492857: Already exists
8989192c74fe: Already exists
0c77f911b4ac: Already exists
127679045d22: Already exists
703641514dec: Already exists
355713e56611: Already exists
b077b32f3467: Already exists
5fac5a53a6e0: Already exists
135be594b6b0: Already exists
8c4f627de9a8: Already exists
ddcab00bd8b5: Already exists
8cc53bc399b9: Already exists
cc314699ebb3: Already exists
21f9192bbdbc: Pulling fs layer
c253b21f5645: Pulling fs layer
7897251b4390: Pulling fs layer
6541215dbcde: Pulling fs layer
6541215dbcde: Waiting
c253b21f5645: Verifying Checksum
c253b21f5645: Download complete
6541215dbcde: Verifying Checksum
6541215dbcde: Download complete
7897251b4390: Verifying Checksum
7897251b4390: Download complete
21f9192bbdbc: Verifying Checksum
21f9192bbdbc: Download complete
21f9192bbdbc: Pull complete
c253b21f5645: Pull complete
7897251b4390: Pull complete
6541215dbcde: Pull complete
Digest: sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324
Status: Downloaded newer image for ocaml/opam@sha256:92c28e22e95b118557cf2fee7cdb3bd1df67691136ca51918b0bed6ab9ff7324
2026-03-21 18:50.06 ---> saved as "176b78d4712c07b55d53abc789f23e917c1c9b9dc68c6cb518e960b046403981"

/: (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 18:50.06 ---> saved as "3ccb1616cff7e17d1156add8f030a1032d351c14b0fab1019bc5144c35607660"

/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.

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.

Continue? [Y/n] y
[NOTE] The 'jobs' option was reset, its value was 255 and its new value will vary according to the current number of cores on your machine. You can restore the fixed value using:
           opam option jobs=255 --global
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-03-21 18:50.30 ---> saved as "d68d8c24f617a4e87b9bedc3f3d6072eb86fc5a2e1fc26fd8135bbfbe89f0925"

/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=opensuse-leap os-version=16.0
# 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 18:50.30 ---> saved as "7a861205fe553fbdddb728fef045c62c8bd63b3cbf11642ab367eb4ca264789c"

/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 18:50.36 ---> saved as "61a6556736f9a2c8ef3e8b0a81dfa8e7802a5889c265468b3bf9a3740153aa7a"

/home/opam: (copy (src .) (dst opam-repository/))
2026-03-21 18:50.42 ---> saved as "add1a4ebe601b99cb00c923b9f2c08afba7aceae963e083dddd2c1b7b1efc76e"

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-03-21 18:51.01 ---> saved as "ece9b7d84174e978c3a2e3341f744cb4126ee4db77655ce2b20050f890b252d0"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "zypper" "--non-interactive" "refresh"
- Repository 'repo-openh264 (16.0)' is up to date.
- Retrieving repository 'repo-oss (16.0)' metadata [...
- Looking for gpg keys in repository repo-oss (16.0).
-   gpgkey=http://cdn.opensuse.org/distribution/leap/16.0/repo/oss/x86_64/repodata/repomd.xml.key
- .
- ..
- 
- Note: Received 1 new package signing key from repository "repo-oss (16.0)":
- 
-   Those additional keys are usually used to sign packages shipped by the repository. In order to
-   validate those packages upon download and installation the new keys will be imported into the rpm
-   database.
- 
-   New:
-   Key Fingerprint:  F044 C2C5 07A1 262B 538A AADD 8A49 EB03 25DB 7AE0
-   Key Name:         openSUSE:Backports OBS Project <openSUSE:Backports@build.opensuse.org>
-   Key Algorithm:    RSA 4096
-   Key Created:      Wed May 10 14:46:12 2023
-   Key Expires:      Sun May  9 14:46:12 2027
-   Rpm Name:         gpg-pubkey-25db7ae0-645bae34
- 
-   The repository metadata introducing the new keys have been signed and validated by the trusted
-   key:
- 
-   Repository:       repo-oss (16.0)
-   Key Fingerprint:  AD48 5664 E901 B867 051A B15F 35A2 F86E 29B7 00A4
-   Key Name:         openSUSE Project Signing Key <opensuse@opensuse.org>
-   Key Algorithm:    RSA 4096
-   Key Created:      Mon Jun 20 14:03:14 2022
-   Key Expires:      Fri Jun 19 14:03:14 2026 (expires in 89 days)
-   Rpm Name:         gpg-pubkey-29b700a4-62b07e22
- 
- .
- ..
- .........
- ........
- ..........
- ........
- .........
- .........
- .........
- ........
- ..........
- ........
- .........
- ........
- .........
- ........
- .........
- .......
- .........
- .........
- .........
- .......
- ..........
- ......
- .done]
- Building repository 'repo-oss (16.0)' cache [..
- ..done]
- All repositories have been refreshed.
2026-03-21 18:51.43 ---> saved as "69f3dfc63bf1c46cf10b8d3f58daeda1c1fbd1590822ac3d32e0845b27562b3a"

/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 18:51.44 ---> saved as "ea3add585328382ce452c3be6a6729ea8b4c722b8c6c1bd16edbefe7bb51b6b8"

/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 \"\\\"opensuse-16.0\\\"\"; 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)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed conf-m4.1
Done.
# To update the current shell environment, run: eval $(opam env)
2026-03-21 18:51.53 ---> saved as "e9f0df8433357d4c3842db6f55732f4d6ffa3e663e14632f4b92ded40e2afd92"
Job succeeded
2026-03-21 18:53.02: Job succeeded