(not at the head of any monitored branch or PR)
2026-04-13 14:42.22: New job: test mccs.1.1+11 with dune.3.22.2, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29704/head (3e0c395e7b1393a792367f8edca3654dac71e6fd)
                              on debian-13-ocaml-5.4/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29704/head" && git reset --hard 3e0c395e
git fetch origin master
git merge --no-edit ba4685aeec7b28fde6af30c7b83004704c68c86a
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-5.4@sha256:a447b546feb1d9aedc90fda889d688eb9be4d3bdea086d5b2f4f59f38f224ef4
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn dune.3.22.2 3.22.2
RUN opam reinstall dune.3.22.2; \
    res=$?; \
    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 "$pkg" != 'dune.3.22.2' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN opam reinstall mccs.1.1+11; \
    res=$?; \
    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 "$pkg" != 'mccs.1.1+11' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test mccs.1.1+11) || true
RUN opam reinstall --with-test --verbose mccs.1.1+11; \
    res=$?; \
    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 "$pkg" != 'mccs.1.1+11' && partial_fails="$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 .

2026-04-13 14:42.22: Using cache hint "ocaml/opam:debian-13-ocaml-5.4@sha256:a447b546feb1d9aedc90fda889d688eb9be4d3bdea086d5b2f4f59f38f224ef4-dune.3.22.2-mccs.1.1+11-3e0c395e7b1393a792367f8edca3654dac71e6fd"
2026-04-13 14:42.22: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-5.4@sha256:a447b546feb1d9aedc90fda889d688eb9be4d3bdea086d5b2f4f59f38f224ef4)
 (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 dune.3.22.2 3.22.2"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall dune.3.22.2;\
             \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 \"$pkg\" != 'dune.3.22.2' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall mccs.1.1+11;\
             \n        res=$?;\
             \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 \"$pkg\" != 'mccs.1.1+11' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test mccs.1.1+11) || true"))
 (run (shell  "opam reinstall --with-test --verbose mccs.1.1+11;\
             \n        res=$?;\
             \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 \"$pkg\" != 'mccs.1.1+11' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-04-13 14:42.22: Waiting for resource in pool OCluster
2026-04-13 15:23.53: Waiting for worker…
2026-04-13 15:29.55: Got resource from pool OCluster
Building on bremusa.ocamllabs.io
All commits already cached
Updating files:  66% (12433/18721)
Updating files:  67% (12544/18721)
Updating files:  68% (12731/18721)
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Updating files: 100% (18721/18721)
Updating files: 100% (18721/18721), done.
HEAD is now at ba4685aeec Merge pull request #29653 from yakobowski/camlidl
Merge made by the 'ort' strategy.
 packages/chrome-trace/chrome-trace.3.22.2/opam     | 39 +++++++++++
 .../dune-action-plugin.3.22.2/opam                 | 52 +++++++++++++++
 .../dune-action-trace.3.22.2/opam                  | 39 +++++++++++
 .../dune-build-info/dune-build-info.3.22.2/opam    | 45 +++++++++++++
 .../dune-configurator.3.22.2/opam                  | 49 ++++++++++++++
 packages/dune-glob/dune-glob.3.22.2/opam           | 42 ++++++++++++
 .../dune-private-libs.3.22.2/opam                  | 50 +++++++++++++++
 packages/dune-rpc-lwt/dune-rpc-lwt.3.22.2/opam     | 41 ++++++++++++
 packages/dune-rpc/dune-rpc.3.22.2/opam             | 44 +++++++++++++
 packages/dune-site/dune-site.3.22.2/opam           | 37 +++++++++++
 packages/dune/dune.3.22.2/opam                     | 75 ++++++++++++++++++++++
 packages/dyn/dyn.3.22.2/opam                       | 40 ++++++++++++
 packages/fs-io/fs-io.3.22.2/opam                   | 39 +++++++++++
 packages/ocamlc-loc/ocamlc-loc.3.22.2/opam         | 43 +++++++++++++
 packages/ordering/ordering.3.22.2/opam             | 38 +++++++++++
 packages/stdune/stdune.3.22.2/opam                 | 46 +++++++++++++
 packages/top-closure/top-closure.3.22.2/opam       | 38 +++++++++++
 packages/xdg/xdg.3.22.2/opam                       | 39 +++++++++++
 18 files changed, 796 insertions(+)
 create mode 100644 packages/chrome-trace/chrome-trace.3.22.2/opam
 create mode 100644 packages/dune-action-plugin/dune-action-plugin.3.22.2/opam
 create mode 100644 packages/dune-action-trace/dune-action-trace.3.22.2/opam
 create mode 100644 packages/dune-build-info/dune-build-info.3.22.2/opam
 create mode 100644 packages/dune-configurator/dune-configurator.3.22.2/opam
 create mode 100644 packages/dune-glob/dune-glob.3.22.2/opam
 create mode 100644 packages/dune-private-libs/dune-private-libs.3.22.2/opam
 create mode 100644 packages/dune-rpc-lwt/dune-rpc-lwt.3.22.2/opam
 create mode 100644 packages/dune-rpc/dune-rpc.3.22.2/opam
 create mode 100644 packages/dune-site/dune-site.3.22.2/opam
 create mode 100644 packages/dune/dune.3.22.2/opam
 create mode 100644 packages/dyn/dyn.3.22.2/opam
 create mode 100644 packages/fs-io/fs-io.3.22.2/opam
 create mode 100644 packages/ocamlc-loc/ocamlc-loc.3.22.2/opam
 create mode 100644 packages/ordering/ordering.3.22.2/opam
 create mode 100644 packages/stdune/stdune.3.22.2/opam
 create mode 100644 packages/top-closure/top-closure.3.22.2/opam
 create mode 100644 packages/xdg/xdg.3.22.2/opam

(from ocaml/opam:debian-13-ocaml-5.4@sha256:a447b546feb1d9aedc90fda889d688eb9be4d3bdea086d5b2f4f59f38f224ef4)
2026-04-13 15:30.01 ---> using "650db199dd47c38a0926a758262f0be95fb78e2d9a79cbdc2809fa2b15683d52" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-04-13 15:30.01 ---> using "1d82b13dae11ba0e4ae4c53498d44d66e368b802cfcb77b29900c3af7e2a1562" 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
2026-04-13 15:30.01 ---> using "8fc56361284f52a58bad5297203dc12518b6d67d540112c1ecc4d982140daeca" 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       5.4
# invariant            ["ocaml-base-compiler" {= "5.4.1"}]
# compiler-packages    ocaml-base-compiler.5.4.1, ocaml-compiler.5.4.1, ocaml-options-vanilla.1
# ocaml:native         true
# ocaml:native-tools   true
# ocaml:native-dynlink true
# ocaml:stubsdir       /home/opam/.opam/5.4/lib/ocaml/stublibs:/home/opam/.opam/5.4/lib/ocaml
# ocaml:preinstalled   false
# ocaml:compiler       5.4.1
2026-04-13 15:30.01 ---> using "fe9db6e6aedfe8a888a2521b45017dcd4b4a70e85e324e4a3527adef84a23afd" 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/"))
2026-04-13 15:30.01 ---> using "3a79be73bc2436b5aae3b84f3727fd2fe0209a9b7334e20aac2d10fcd0f26769" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-04-13 15:30.02 ---> using "306e2765f803e9ac22f1023f023e8bba6e1f5296fc47a318acebb969ba1b1204" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-04-13 15:30.02 ---> using "9e9b4bad2baa72b9fad539bf23d04eb0f2a72097c5685706fe162459f8a36f61" from cache

/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 [122 kB]
- Fetched 213 kB in 0s (2049 kB/s)
- Reading package lists...
2026-04-13 15:30.02 ---> using "2fb1ac5ca6037947ba1884eb3a92b9454761e371e0b3c1955630d8faadedabed" from cache

/home/opam: (run (shell "opam pin add -k version -yn dune.3.22.2 3.22.2"))
dune is now pinned to version 3.22.2
2026-04-13 15:30.02 ---> using "44c7d7d7595c4a41e6aab53eb1a771058e5fb0ec8e90350b08cc9f23cb3d5ed9" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall dune.3.22.2;\
                        \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 \"$pkg\" != 'dune.3.22.2' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
dune.3.22.2 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 1 package
  - install dune 3.22.2 (pinned)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved dune.3.22.2  (cached)
-> installed dune.3.22.2
Done.
# To update the current shell environment, run: eval $(opam env)
2026-04-13 15:30.02 ---> using "7aefc73d6425e27bc34bfbdb99d4d7e80ada815df45ed1df4e5c28f9ea60f0d6" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall mccs.1.1+11;\
                        \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 \"$pkg\" != 'mccs.1.1+11' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
mccs.1.1+11 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 5 packages
  - install conf-c++ 1.0    [required by mccs]
  - install cppo     1.8.0  [required by extlib]
  - install cudf     0.10   [required by mccs]
  - install extlib   1.8.0  [required by cudf]
  - install mccs     1.1+11

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved cppo.1.8.0  (cached)
-> installed conf-c++.1.0
-> retrieved cudf.0.10  (cached)
-> retrieved extlib.1.8.0  (cached)
-> retrieved mccs.1.1+11  (https://opam.ocaml.org/cache)
-> installed cppo.1.8.0
-> installed extlib.1.8.0
-> installed cudf.0.10
[ERROR] The compilation of mccs.1.1+11 failed at "dune build -p mccs -j 71".

#=== ERROR while compiling mccs.1.1+11 ========================================#
# context              2.5.0 | linux/x86_64 | ocaml-base-compiler.5.4.1 | file:///home/opam/opam-repository
# path                 ~/.opam/5.4/.opam-switch/build/mccs.1.1+11
# command              ~/.opam/opam-init/hooks/sandbox.sh build dune build -p mccs -j 71
# exit-code            1
# env-file             ~/.opam/log/mccs-7-1dee80.env
# output-file          ~/.opam/log/mccs-7-1dee80.out
### output ###
# (cd _build/default/src/glpk && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -fPIC -pthread -D_FILE_OFFSET_BITS=64 -O2 -fno-strict-aliasing -fwrapv -fPIC -pthread -Wno-parentheses -g -I /home/opam/.opam/5.4/lib/ocaml -o wclique1.o -c wclique1.c)
# src/glpk/misc/wclique1.c: In function '_glp_wclique1':
# src/glpk/misc/wclique1.c:121:7: warning: 'memset' specified bound between 18446744071562067968 and 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
# src/glpk/misc/wclique1.c:123:7: warning: 'memset' specified bound between 18446744071562067968 and 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
# File "src/dune", line 5, characters 63-73:
# 5 |    new_criteria notuptodate_criteria removed_criteria mccscudf mccs_stubs)
#                                                                    ^^^^^^^^^^
# (cd _build/default/src && /usr/bin/gcc -O2 -fno-strict-aliasing -fwrapv -fPIC -pthread -I . -DUSEGLPK -g -I /home/opam/.opam/5.4/lib/ocaml -I /home/opam/.opam/5.4/lib/cudf -I /home/opam/.opam/5.4/lib/extlib -I glpk -o mccs_stubs.o -c mccs_stubs.cpp)
# mccs_stubs.cpp:27:9: warning: "Some_val" redefined
#    27 | #define Some_val(v)  Field(v,0)
#       |         ^~~~~~~~
# In file included from mccs_stubs.cpp:6:
# /home/opam/.opam/5.4/lib/ocaml/caml/mlvalues.h:481:9: note: this is the location of the previous definition
#   481 | #define Some_val(v) Field(v, 0)
#       |         ^~~~~~~~
# In file included from /usr/include/c++/14/map:62,
#                  from mccs_stubs.cpp:14:
# /usr/include/c++/14/bits/stl_tree.h: In instantiation of 'static const _Key& std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_S_key(_Const_Link_type) [with _Key = CUDFVersionedPackage*; _Val = CUDFVersionedPackage*; _KeyOfValue = std::_Identity<CUDFVersionedPackage*>; _Compare = CUDFPackage_comparator; _Alloc = std::allocator<CUDFVersionedPackage*>; _Const_Link_type = const std::_Rb_tree_node<CUDFVersionedPackage*>*]':
# /usr/include/c++/14/bits/stl_tree.h:2116:47:   required from 'std::pair<std::_Rb_tree_node_base*, std::_Rb_tree_node_base*> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_get_insert_unique_pos(const key_type&) [with _Key = CUDFVersionedPackage*; _Val = CUDFVersionedPackage*; _KeyOfValue = std::_Identity<CUDFVersionedPackage*>; _Compare = CUDFPackage_comparator; _Alloc = std::allocator<CUDFVersionedPackage*>; key_type = CUDFVersionedPackage*]'
#  2116 |           __comp = _M_impl._M_key_compare(__k, _S_key(__x));
#       |                                                ~~~~~~^~~~~
# /usr/include/c++/14/bits/stl_tree.h:2169:4:   required from 'std::pair<std::_Rb_tree_iterator<_Val>, bool> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_unique(_Arg&&) [with _Arg = CUDFVersionedPackage* const&; _Key = CUDFVersionedPackage*; _Val = CUDFVersionedPackage*; _KeyOfValue = std::_Identity<CUDFVersionedPackage*>; _Compare = CUDFPackage_comparator; _Alloc = std::allocator<CUDFVersionedPackage*>]'
#  2169 |         = _M_get_insert_unique_pos(_KeyOfValue()(__v));
#       |           ^~~~~~~~~~~~~~~~~~~~~~~~
# /usr/include/c++/14/bits/stl_set.h:514:25:   required from 'std::pair<typename std::_Rb_tree<_Key, _Key, std::_Identity<_Tp>, _Compare, typename __gnu_cxx::__alloc_traits<_Allocator>::rebind<_Key>::other>::const_iterator, bool> std::set<_Key, _Compare, _Alloc>::insert(const value_type&) [with _Key = CUDFVersionedPackage*; _Compare = CUDFPackage_comparator; _Alloc = std::allocator<CUDFVersionedPackage*>; typename std::_Rb_tree<_Key, _Key, std::_Identity<_Tp>, _Compare, typename __gnu_cxx::__alloc_traits<_Allocator>::rebind<_Key>::other>::const_iterator = std::_Rb_tree<CUDFVersionedPackage*, CUDFVersionedPackage*, std::_Identity<CUDFVersionedPackage*>, CUDFPackage_comparator, std::allocator<CUDFVersionedPackage*> >::const_iterator; typename __gnu_cxx::__alloc_traits<_Allocator>::rebind<_Key>::other = std::allocator<CUDFVersionedPackage*>; typename __gnu_cxx::__alloc_traits<_Allocator>::rebind<_Key> = __gnu_cxx::__alloc_traits<std::allocator<CUDFVersionedPackage*>, CUDFVersionedPackage*>::rebind<CUDFVersionedPackage*>; typename _Allocator::value_type = CUDFVersionedPackage*; value_type = CUDFVersionedPackage*]'
#   514 |           _M_t._M_insert_unique(__x);
#       |           ~~~~~~~~~~~~~~~~~~~~~^~~~~
# mccs_stubs.cpp:316:39:   required from here
#   316 |   virtual_package->all_versions.insert(pkg);
#       |   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
# /usr/include/c++/14/bits/stl_tree.h:768:15: error: static assertion failed: comparison object must be invocable as const
#   768 |               is_invocable_v<const _Compare&, const _Key&, const _Key&>,
#       |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# /usr/include/c++/14/bits/stl_tree.h:768:15: note: 'std::is_invocable_v<const CUDFPackage_comparator&, CUDFVersionedPackage* const&, CUDFVersionedPackage* const&>' evaluates to false



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions failed
| - build mccs 1.1+11
+- 
+- The following changes have been performed
| - install conf-c++ 1.0
| - install cppo     1.8.0
| - install cudf     0.10
| - install extlib   1.8.0
+- 
# 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/5.4/.opam-switch/backup/state-20260413153004.export"
[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 mccs.1.1+11;
        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 "$pkg" != 'mccs.1.1+11' && partial_fails="$partial_fails $pkg";
        done;
        test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}";
        exit 1" failed with exit status 1
2026-04-13 15:30.34: Job failed: Failed: Build failed
2026-04-13 15:30.34: Log analysis:
2026-04-13 15:30.34: >>> 
[ERROR] The compilation of mccs.1.1+11 failed at "dune build -p mccs -j 71".
 (score = 20)
2026-04-13 15:30.34: >>> 
# /usr/include/c++/14/bits/stl_tree.h:768:15: error: static assertion failed: comparison object must be invocable as const
 (score = 30)
2026-04-13 15:30.34: static assertion failed: comparison object must be invocable as const