(for PR #29110)

2026-01-31 15:31.25: New job: build conf-llvm-shared.20, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29110/head (e3b282a9c0eb1ef824245e3ffb935dc8fcc9b1ea)
                              on debian-13-ocaml-4.10/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29110/head" && git reset --hard e3b282a9
git fetch origin master
git merge --no-edit 277244107784e7f5e6b57eaae2e769caae2a4906
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.10@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn conf-llvm-shared.20 20
RUN opam reinstall conf-llvm-shared.20; \
    res=$?; \
    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 "$pkg" != 'conf-llvm-shared.20' && partial_fails="$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 .

2026-01-31 15:31.25: Using cache hint "ocaml/opam:debian-13-ocaml-4.10@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7-conf-llvm-shared.20-e3b282a9c0eb1ef824245e3ffb935dc8fcc9b1ea"
2026-01-31 15:31.25: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.10@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7)
 (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-llvm-shared.20 20"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall conf-llvm-shared.20;\
             \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 \"$pkg\" != 'conf-llvm-shared.20' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-31 15:31.25: Waiting for resource in pool OCluster
2026-01-31 15:31.29: Waiting for worker…
2026-01-31 15:31.29: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
All commits already cached
HEAD is now at 2772441077 Merge pull request #29314 from jmid/more-fstar-ocaml-upper-bounds
Merge made by the 'ort' strategy.
 packages/conf-llvm-shared/conf-llvm-shared.20/opam | 38 +++++++++++
 packages/conf-llvm-shared/conf-llvm-shared.21/opam | 38 +++++++++++
 packages/conf-llvm-static/conf-llvm-static.20/opam | 38 +++++++++++
 packages/conf-llvm-static/conf-llvm-static.21/opam | 38 +++++++++++
 packages/llvm/llvm.20-shared/opam                  | 77 ++++++++++++++++++++++
 packages/llvm/llvm.20-static/opam                  | 76 +++++++++++++++++++++
 packages/llvm/llvm.21-shared/opam                  | 77 ++++++++++++++++++++++
 packages/llvm/llvm.21-static/opam                  | 76 +++++++++++++++++++++
 8 files changed, 458 insertions(+)
 create mode 100644 packages/conf-llvm-shared/conf-llvm-shared.20/opam
 create mode 100644 packages/conf-llvm-shared/conf-llvm-shared.21/opam
 create mode 100644 packages/conf-llvm-static/conf-llvm-static.20/opam
 create mode 100644 packages/conf-llvm-static/conf-llvm-static.21/opam
 create mode 100644 packages/llvm/llvm.20-shared/opam
 create mode 100644 packages/llvm/llvm.20-static/opam
 create mode 100644 packages/llvm/llvm.21-shared/opam
 create mode 100644 packages/llvm/llvm.21-static/opam

(from ocaml/opam:debian-13-ocaml-4.10@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7)
Unable to find image 'ocaml/opam:debian-13-ocaml-4.10@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7' locally
docker.io/ocaml/opam@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7: Pulling from ocaml/opam
2ca1bfae7ba8: Already exists
3baeae2ed4cf: Already exists
b254ca288623: Already exists
745976a04e35: Already exists
a516242b2337: Already exists
9bb526cd9631: Already exists
3737e8f76884: Already exists
6a8811ebcb2c: Already exists
386dffb80382: Already exists
e04d691eea35: Already exists
bb72c0d1c3f0: Already exists
3a56fcb872cd: Already exists
5abffa2313de: Already exists
7ed80bc2b055: Already exists
87c92835260d: Already exists
5624e0ee5ca5: Already exists
96e54dc9b357: Already exists
96e54dc9b357: Already exists
7c484d393436: Already exists
16b8d7610542: Already exists
c5ac47ffe6ef: Already exists
00cfb259c8ac: Already exists
4f4fb700ef54: Already exists
4658a16b5264: Already exists
7c82a6a00032: Already exists
b76e2612fc73: Already exists
da0741a07551: Already exists
102a21125d73: Already exists
d244b294335f: Already exists
e47a432b94fb: Already exists
6ee7cce1e23d: Already exists
2475e9cbd3e5: Already exists
4f8aac8ae1e5: Already exists
3e59226f7823: Already exists
6d429b9a6ce7: Already exists
dc8bbbd9edf9: Already exists
66ec5629681d: Already exists
74661ee64965: Already exists
b3088c441ac7: Already exists
11be3e645e01: Already exists
e9a0ff031006: Already exists
8dfc3c1c0909: Pulling fs layer
dfb0bef42a95: Pulling fs layer
3072a31bac1c: Pulling fs layer
f965320a0609: Pulling fs layer
f965320a0609: Waiting
dfb0bef42a95: Verifying Checksum
dfb0bef42a95: Download complete
3072a31bac1c: Verifying Checksum
3072a31bac1c: Download complete
8dfc3c1c0909: Download complete
8dfc3c1c0909: Pull complete
dfb0bef42a95: Pull complete
3072a31bac1c: Pull complete
f965320a0609: Pull complete
Digest: sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7
Status: Downloaded newer image for ocaml/opam@sha256:f460347c28c5546512b344e58dc40c28c3c0f98f97b1ae1bc50f0c9fccf304d7
2026-01-31 15:32.08 ---> using "a8e17f43b5a89242ec7ab4a3e45a5034b6e3c532d0ee726a612438509a44dfed" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-01-31 15:32.08 ---> using "6b0f96963755d61fc231da2bea43309693e8914bcf89f88ce0b1b2a683fb86f1" from cache

/home/opam: (run (network host)
                 (shell "opam init --reinit --config .opamrc-sandbox -ni"))
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.

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
Format upgrade done.

<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-01-31 15:32.08 ---> using "f3d47fa48572c8521a906a096314b3c227292a96f37fbe4a5039782492ca4006" 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       4.10
# invariant            ["ocaml-base-compiler" {= "4.10.2"}]
# compiler-packages    ocaml-base-compiler.4.10.2
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/4.10/lib/ocaml/stublibs:/home/opam/.opam/4.10/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       4.10.2
2026-01-31 15:32.08 ---> using "f707ec4efc3e6242e3fcf7c0686f83e608432f74399dc494e60450338b695230" 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/"))
2026-01-31 15:32.08 ---> using "9fd91df49287737fb17dad406201a26ad3ac3e689b96c5508d6e401ab7f3028a" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-31 15:32.09 ---> using "20ab93362f27a168f64ed0cd1de44180364a2f0f0ff77c129983bd0205306bfa" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-31 15:32.26 ---> saved as "e0cfc440796cfbc617d3df8829c7c996d48be877034ac26291877942c7b3582e"

/home/opam: (run (network host)
                 (shell "opam update --depexts || true"))
+ /usr/bin/sudo "apt-get" "update"
- Hit:1 http://deb.debian.org/debian trixie InRelease
- 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-security trixie-security/main amd64 Packages [98.5 kB]
- Fetched 189 kB in 0s (1797 kB/s)
- Reading package lists...
2026-01-31 15:32.27 ---> saved as "56b0d335cb1d75c4c118b735defce02e532ea2281dfd7cd80960f3fa0b77efcf"

/home/opam: (run (shell "opam pin add -k version -yn conf-llvm-shared.20 20"))
conf-llvm-shared is now pinned to version 20
2026-01-31 15:32.28 ---> saved as "0d02f0e05d449d577a950f861390a329fe6c3afddd2dfa084cad24cd78b74fa2"

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall conf-llvm-shared.20;\
                        \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 \"$pkg\" != 'conf-llvm-shared.20' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
[ERROR] Package conf-llvm-shared.20 depends on the unavailable system package 'llvm-20-dev'. You can use `--no-depexts' to attempt installation anyway.
"/usr/bin/env" "bash" "-c" "opam reinstall conf-llvm-shared.20;
        res=$?;
        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 "$pkg" != 'conf-llvm-shared.20' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 5
2026-01-31 15:32.40: Job failed: Failed: Build failed
2026-01-31 15:32.40: Log analysis:
2026-01-31 15:32.40: >>> 
[ERROR] Package conf-llvm-shared.20 depends on the unavailable system package 'llvm-20-dev'. You can use `--no-depexts' to attempt installation anyway.
 (score = 100)
2026-01-31 15:32.40: [SKIP] Package not available