Build:
  1. 0
2026-01-13 04:05.01: New job: test fmt.0.8.5 with dune.3.21.0, using opam dev
                              from https://github.com/ocaml/opam-repository.git#refs/pull/29216/head (001b427da21d4d746e124eaaffab7b4134813f6d)
                              on debian-13-ocaml-4.14/amd64

To reproduce locally:

cd $(mktemp -d)
git clone --recursive "https://github.com/ocaml/opam-repository.git" && cd "opam-repository" && git fetch origin "refs/pull/29216/head" && git reset --hard 001b427d
git fetch origin master
git merge --no-edit 1c361fac36225534ee877701522e296785f9a9db
cat > ../Dockerfile <<'END-OF-DOCKERFILE'
FROM ocaml/opam:debian-13-ocaml-4.14@sha256:d765b54c014ef238f3a84185055fd22f6a5e5bea6d6bbe9ec94a1c7ac9087afa
USER 1000:1000
WORKDIR /home/opam
RUN sudo ln -f /usr/bin/opam-dev /usr/bin/opam
RUN opam init --reinit -ni
RUN opam option solver=builtin-0install && opam config report
ENV OPAMDOWNLOADJOBS="1"
ENV OPAMERRLOGLEN="0"
ENV OPAMPRECISETRACKING="1"
ENV CI="true"
ENV OPAM_REPO_CI="true"
RUN rm -rf opam-repository/
COPY --chown=1000:1000 . opam-repository/
RUN opam repository set-url --strict default opam-repository/
RUN opam update --depexts || true
RUN opam pin add -k version -yn dune.3.21.0 3.21.0
RUN opam reinstall dune.3.21.0; \
    res=$?; \
    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 "$pkg" != 'dune.3.21.0' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN opam reinstall fmt.0.8.5; \
    res=$?; \
    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 "$pkg" != 'fmt.0.8.5' && partial_fails="$partial_fails $pkg"; \
    done; \
    test "${partial_fails}" != "" && echo "opam-repo-ci detected dependencies failing: ${partial_fails}"; \
    exit 1
RUN (opam reinstall --with-test fmt.0.8.5) || true
RUN opam reinstall --with-test --verbose fmt.0.8.5; \
    res=$?; \
    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 "$pkg" != 'fmt.0.8.5' && partial_fails="$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 .

2026-01-13 04:05.01: Using cache hint "ocaml/opam:debian-13-ocaml-4.14@sha256:d765b54c014ef238f3a84185055fd22f6a5e5bea6d6bbe9ec94a1c7ac9087afa-dune.3.21.0-fmt.0.8.5-001b427da21d4d746e124eaaffab7b4134813f6d"
2026-01-13 04:05.01: Using OBuilder spec:
((from ocaml/opam:debian-13-ocaml-4.14@sha256:d765b54c014ef238f3a84185055fd22f6a5e5bea6d6bbe9ec94a1c7ac9087afa)
 (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.3.21.0 3.21.0"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall dune.3.21.0;\
             \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 \"$pkg\" != 'dune.3.21.0' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
      (network host)
      (shell  "opam reinstall fmt.0.8.5;\
             \n        res=$?;\
             \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 \"$pkg\" != 'fmt.0.8.5' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
 (run (network host)
      (shell "(opam reinstall --with-test fmt.0.8.5) || true"))
 (run (shell  "opam reinstall --with-test --verbose fmt.0.8.5;\
             \n        res=$?;\
             \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 \"$pkg\" != 'fmt.0.8.5' && partial_fails=\"$partial_fails $pkg\";\
             \n        done;\
             \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
             \n        exit 1"))
)

2026-01-13 04:05.01: Waiting for resource in pool OCluster
2026-01-13 18:34.58: Waiting for worker…
2026-01-13 18:38.31: Got resource from pool OCluster
Building on clete
All commits already cached
Updating files:  75% (14528/19211)
Updating files:  76% (14601/19211)
Updating files:  77% (14793/19211)
Updating files:  78% (14985/19211)
Updating files:  79% (15177/19211)
Updating files:  80% (15369/19211)
Updating files:  81% (15561/19211)
Updating files:  82% (15754/19211)
Updating files:  83% (15946/19211)
Updating files:  84% (16138/19211)
Updating files:  85% (16330/19211)
Updating files:  86% (16522/19211)
Updating files:  87% (16714/19211)
Updating files:  88% (16906/19211)
Updating files:  89% (17098/19211)
Updating files:  90% (17290/19211)
Updating files:  91% (17483/19211)
Updating files:  92% (17675/19211)
Updating files:  93% (17867/19211)
Updating files:  94% (18059/19211)
Updating files:  95% (18251/19211)
Updating files:  96% (18443/19211)
Updating files:  97% (18635/19211)
Updating files:  98% (18827/19211)
Updating files:  99% (19019/19211)
Updating files: 100% (19211/19211)
Updating files: 100% (19211/19211), done.
HEAD is now at 1c361fac36 Merge pull request #29210 from dinosaure/release-miou-v0.5.1
Merge made by the 'ort' strategy.
 packages/chrome-trace/chrome-trace.3.21.0/opam     | 41 ++++++++++++
 .../dune-action-plugin.3.21.0/opam                 | 54 ++++++++++++++++
 .../dune-build-info/dune-build-info.3.21.0/opam    | 47 ++++++++++++++
 .../dune-configurator.3.21.0/opam                  | 51 +++++++++++++++
 packages/dune-glob/dune-glob.3.21.0/opam           | 44 +++++++++++++
 .../dune-private-libs.3.21.0/opam                  | 52 +++++++++++++++
 packages/dune-rpc-lwt/dune-rpc-lwt.3.21.0/opam     | 43 +++++++++++++
 packages/dune-rpc/dune-rpc.3.21.0/opam             | 46 +++++++++++++
 packages/dune-site/dune-site.3.21.0/opam           | 39 +++++++++++
 packages/dune/dune.3.21.0/opam                     | 75 ++++++++++++++++++++++
 packages/dyn/dyn.3.21.0/opam                       | 42 ++++++++++++
 packages/fs-io/fs-io.3.21.0/opam                   | 41 ++++++++++++
 packages/ocamlc-loc/ocamlc-loc.3.21.0/opam         | 45 +++++++++++++
 packages/ordering/ordering.3.21.0/opam             | 40 ++++++++++++
 packages/stdune/stdune.3.21.0/opam                 | 48 ++++++++++++++
 packages/top-closure/top-closure.3.21.0/opam       | 40 ++++++++++++
 packages/xdg/xdg.3.21.0/opam                       | 41 ++++++++++++
 17 files changed, 789 insertions(+)
 create mode 100644 packages/chrome-trace/chrome-trace.3.21.0/opam
 create mode 100644 packages/dune-action-plugin/dune-action-plugin.3.21.0/opam
 create mode 100644 packages/dune-build-info/dune-build-info.3.21.0/opam
 create mode 100644 packages/dune-configurator/dune-configurator.3.21.0/opam
 create mode 100644 packages/dune-glob/dune-glob.3.21.0/opam
 create mode 100644 packages/dune-private-libs/dune-private-libs.3.21.0/opam
 create mode 100644 packages/dune-rpc-lwt/dune-rpc-lwt.3.21.0/opam
 create mode 100644 packages/dune-rpc/dune-rpc.3.21.0/opam
 create mode 100644 packages/dune-site/dune-site.3.21.0/opam
 create mode 100644 packages/dune/dune.3.21.0/opam
 create mode 100644 packages/dyn/dyn.3.21.0/opam
 create mode 100644 packages/fs-io/fs-io.3.21.0/opam
 create mode 100644 packages/ocamlc-loc/ocamlc-loc.3.21.0/opam
 create mode 100644 packages/ordering/ordering.3.21.0/opam
 create mode 100644 packages/stdune/stdune.3.21.0/opam
 create mode 100644 packages/top-closure/top-closure.3.21.0/opam
 create mode 100644 packages/xdg/xdg.3.21.0/opam

(from ocaml/opam:debian-13-ocaml-4.14@sha256:d765b54c014ef238f3a84185055fd22f6a5e5bea6d6bbe9ec94a1c7ac9087afa)
2026-01-13 18:39.16 ---> using "2ecda48447fc68e8dcd256d2898af0a11126a077e05d747a0dcdff2845100de1" from cache

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

/: (workdir /home/opam)

/home/opam: (run (shell "sudo ln -f /usr/bin/opam-dev /usr/bin/opam"))
2026-01-13 18:39.16 ---> using "79eb1218297339daa5e94be48ad16ae73f417b872defa106efeff5b5f3323e6e" 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
Format upgrade done.
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.


<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>
[default] Initialised
2026-01-13 18:39.16 ---> using "bf81485066c79fc9faf7a51b95869ba9d998fe2bf3de5ff7f59b253fc915122f" 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
2026-01-13 18:39.16 ---> using "f7c0c02658daf7a6d6c7671a8028e0e553264100bd569724894645b7844f6d7f" 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/"))
2026-01-13 18:39.16 ---> using "9b3e592c65565b9b3dc8b88c605e54ddba818eb105df981d794040a64c2f9916" from cache

/home/opam: (copy (src .) (dst opam-repository/))
2026-01-13 18:39.18 ---> using "09c39d7126e88ed573ca8f78acbffb48c0088baecebf7a9155a91c3290ace20b" from cache

/home/opam: (run (shell "opam repository set-url --strict default opam-repository/"))
[default] Initialised
2026-01-13 18:39.18 ---> using "1f9ebb837e22c3f42b1c3f6e7178a2aa2fcb8206685e62bba70fde550083c584" 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 [9670 kB]
- Get:5 http://deb.debian.org/debian-security trixie-security/main amd64 Packages [95.5 kB]
- Fetched 9997 kB in 2s (4879 kB/s)
- Reading package lists...
- 
2026-01-13 18:39.18 ---> using "bc5a313c83583d746179a868806b410c236b5a3d4895b7d8bc464eed6cfe706e" from cache

/home/opam: (run (shell "opam pin add -k version -yn dune.3.21.0 3.21.0"))
dune is now pinned to version 3.21.0
2026-01-13 18:39.18 ---> using "448b2b0e77526967dc1d84c9cd1fd4fdf010f08d862d127b94c63a52bbc324d1" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall dune.3.21.0;\
                        \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 \"$pkg\" != 'dune.3.21.0' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
dune.3.21.0 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 1 package
  - install dune 3.21.0 (pinned)

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved dune.3.21.0  (cached)
-> installed dune.3.21.0
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-13 18:39.18 ---> using "5acb627376dc8b6ecaceedd8635589b9dfb44ea06abcf3fc03092c3e94ea4126" from cache

/home/opam: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))
                 (network host)
                 (shell  "opam reinstall fmt.0.8.5;\
                        \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 \"$pkg\" != 'fmt.0.8.5' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
fmt.0.8.5 is not installed. Install it? [Y/n] y
The following actions will be performed:
=== install 6 packages
  - install fmt        0.8.5
  - install ocamlbuild 0.16.1 [required by fmt]
  - install ocamlfind  1.9.8  [required by fmt]
  - install result     1.5    [required by fmt]
  - install topkg      1.1.1  [required by fmt]
  - install uchar      0.0.2  [required by fmt]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved fmt.0.8.5  (cached)
-> retrieved ocamlbuild.0.16.1  (cached)
-> retrieved ocamlfind.1.9.8  (cached)
-> retrieved result.1.5  (cached)
-> retrieved topkg.1.1.1  (cached)
-> retrieved uchar.0.0.2  (cached)
-> installed result.1.5
-> installed ocamlfind.1.9.8
-> installed ocamlbuild.0.16.1
-> installed uchar.0.0.2
-> installed topkg.1.1.1
-> installed fmt.0.8.5
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-13 18:39.35 ---> saved as "aae231808dc035fb6b404e36a98dbf6f663cd87aa6bc8cd7d95389fb2c8ab235"

/home/opam: (run (network host)
                 (shell "(opam reinstall --with-test fmt.0.8.5) || true"))
The following actions will be performed:
=== recompile 1 package
  - recompile fmt 0.8.5

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> retrieved fmt.0.8.5  (https://opam.ocaml.org/cache)
-> removed   fmt.0.8.5
-> installed fmt.0.8.5
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-13 18:39.44 ---> saved as "a9db3229741a758600d28333d9ea261fce2e52f4c0b850659cb2e448a9f05259"

/home/opam: (run (shell  "opam reinstall --with-test --verbose fmt.0.8.5;\
                        \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 \"$pkg\" != 'fmt.0.8.5' && partial_fails=\"$partial_fails $pkg\";\
                        \n        done;\
                        \n        test \"${partial_fails}\" != \"\" && echo \"opam-repo-ci detected dependencies failing: ${partial_fails}\";\
                        \n        exit 1"))
The following actions will be performed:
=== recompile 1 package
  - recompile fmt 0.8.5

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing  1/4: [fmt.0.8.5: extract]
-> retrieved fmt.0.8.5  (cached)
Processing  2/4: [fmt: ocaml build]
+ /home/opam/.opam/opam-init/hooks/sandbox.sh "build" "ocaml" "pkg/pkg.ml" "build" "--dev-pkg" "false" "--with-base-unix" "true" "--with-cmdliner" "false" (CWD=/home/opam/.opam/4.14/.opam-switch/build/fmt.0.8.5)
- + ocamlfind ocamlc -config
- + ocamlfind ocamldep -package result -package uchar -modules src/fmt.ml > src/fmt.ml.depends
- + ocamlfind ocamldep -package result -package uchar -modules src/fmt.mli > src/fmt.mli.depends
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package result -package uchar -I src -I test -o src/fmt.cmi src/fmt.mli
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package result -package uchar -I src -I test -o src/fmt.cmi src/fmt.mli
- File "src/fmt.mli", line 22, characters 31-48:
- 22 |   ('a, Format.formatter, unit) Pervasives.format -> 'a
-                                     ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt.mli", line 93, characters 42-59:
- 93 | val unit : (unit, Format.formatter, unit) Pervasives.format -> unit t
-                                                ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt.mli", line 96, characters 39-56:
- 96 | val fmt : ('a, Format.formatter, unit) Pervasives.format ->
-                                             ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt.mli", line 102, characters 44-61:
- 102 | val always : (unit, Format.formatter, unit) Pervasives.format -> 'a t
-                                                   ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt.mli", line 444, characters 58-75:
- 444 | val styled_unit : style -> (unit, Format.formatter, unit) Pervasives.format ->
-                                                                 ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- + ocamlfind ocamlopt -c -g -bin-annot -safe-string -package result -package uchar -I src -I test -o src/fmt.cmx src/fmt.ml
- + ocamlfind ocamlopt -c -g -bin-annot -safe-string -package result -package uchar -I src -I test -o src/fmt.cmx src/fmt.ml
- File "src/fmt.ml", line 420, characters 21-58:
- 420 | let meta_store ppf = Format.pp_get_formatter_tag_functions ppf ()
-                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Alert deprecated: Stdlib.Format.pp_get_formatter_tag_functions
- Use Format.pp_get_formatter_stag_functions.
- File "src/fmt.ml", line 421, characters 31-68:
- 421 | let set_meta_store ppf store = Format.pp_set_formatter_tag_functions ppf store
-                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Alert deprecated: Stdlib.Format.pp_set_formatter_tag_functions
- This function will erase non-string tag formatting functions. Use Format.pp_set_formatter_stag_functions.
- + ocamlfind ocamlopt -a -package result -package uchar -I src src/fmt.cmx -o src/fmt.cmxa
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package result -package uchar -I src -I test -o src/fmt.cmo src/fmt.ml
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package result -package uchar -I src -I test -o src/fmt.cmo src/fmt.ml
- File "src/fmt.ml", line 420, characters 21-58:
- 420 | let meta_store ppf = Format.pp_get_formatter_tag_functions ppf ()
-                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Alert deprecated: Stdlib.Format.pp_get_formatter_tag_functions
- Use Format.pp_get_formatter_stag_functions.
- File "src/fmt.ml", line 421, characters 31-68:
- 421 | let set_meta_store ppf store = Format.pp_set_formatter_tag_functions ppf store
-                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Alert deprecated: Stdlib.Format.pp_set_formatter_tag_functions
- This function will erase non-string tag formatting functions. Use Format.pp_set_formatter_stag_functions.
- + ocamlfind ocamldep -package unix -package result -package uchar -modules src/fmt_tty.ml > src/fmt_tty.ml.depends
- + ocamlfind ocamldep -package unix -package result -package uchar -modules src/fmt_tty.mli > src/fmt_tty.mli.depends
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package unix -package result -package uchar -I src -I test -o src/fmt_tty.cmi src/fmt_tty.mli
- + ocamlfind ocamlopt -c -g -bin-annot -safe-string -package unix -package result -package uchar -I src -I test -o src/fmt_tty.cmx src/fmt_tty.ml
- + ocamlfind ocamlopt -c -g -bin-annot -safe-string -package unix -package result -package uchar -I src -I test -o src/fmt_tty.cmx src/fmt_tty.ml
- File "src/fmt_tty.ml", line 27, characters 13-30:
- 27 |     if oc == Pervasives.stdout then Fmt.stdout else
-                   ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt_tty.ml", line 28, characters 13-30:
- 28 |     if oc == Pervasives.stderr then Fmt.stderr else
-                   ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt_tty.ml", line 50, characters 12-20:
- 50 |         try is_infix "UTF-8" (String.uppercase (Sys.getenv var))
-                  ^^^^^^^^
- Warning 6 [labels-omitted]: label affix was omitted in the application of this function.
- File "src/fmt_tty.ml", line 50, characters 30-46:
- 50 |         try is_infix "UTF-8" (String.uppercase (Sys.getenv var))
-                                    ^^^^^^^^^^^^^^^^
- Alert deprecated: Stdlib.String.uppercase
- Use String.uppercase_ascii/StringLabels.uppercase_ascii instead.
- + ocamlfind ocamlopt -a -package unix -package result -package uchar -I src src/fmt_tty.cmx -o src/fmt_tty.cmxa
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package unix -package result -package uchar -I src -I test -o src/fmt_tty.cmo src/fmt_tty.ml
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package unix -package result -package uchar -I src -I test -o src/fmt_tty.cmo src/fmt_tty.ml
- File "src/fmt_tty.ml", line 27, characters 13-30:
- 27 |     if oc == Pervasives.stdout then Fmt.stdout else
-                   ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt_tty.ml", line 28, characters 13-30:
- 28 |     if oc == Pervasives.stderr then Fmt.stderr else
-                   ^^^^^^^^^^^^^^^^^
- Alert deprecated: module Stdlib.Pervasives
- Use Stdlib instead.
- 
- If you need to stay compatible with OCaml < 4.07, you can use the 
- stdlib-shims library: https://github.com/ocaml/stdlib-shims
- File "src/fmt_tty.ml", line 50, characters 12-20:
- 50 |         try is_infix "UTF-8" (String.uppercase (Sys.getenv var))
-                  ^^^^^^^^
- Warning 6 [labels-omitted]: label affix was omitted in the application of this function.
- File "src/fmt_tty.ml", line 50, characters 30-46:
- 50 |         try is_infix "UTF-8" (String.uppercase (Sys.getenv var))
-                                    ^^^^^^^^^^^^^^^^
- Alert deprecated: Stdlib.String.uppercase
- Use String.uppercase_ascii/StringLabels.uppercase_ascii instead.
- + ocamlfind ocamldep -package compiler-libs.toplevel -package result -package uchar -modules src/fmt_top.ml > src/fmt_top.ml.depends
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package compiler-libs.toplevel -package result -package uchar -I src -I test -o src/fmt_top.cmo src/fmt_top.ml
- + ocamlfind ocamlc -c -g -bin-annot -safe-string -package compiler-libs.toplevel -package result -package uchar -I src -I test -o src/fmt_top.cmo src/fmt_top.ml
- findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/opam/.opam/4.14/lib/ocaml, /home/opam/.opam/4.14/lib/ocaml/compiler-libs
- + ocamlfind ocamlopt -c -g -bin-annot -safe-string -package compiler-libs.toplevel -package result -package uchar -I src -I test -o src/fmt_top.cmx src/fmt_top.ml
- + ocamlfind ocamlopt -c -g -bin-annot -safe-string -package compiler-libs.toplevel -package result -package uchar -I src -I test -o src/fmt_top.cmx src/fmt_top.ml
- findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/opam/.opam/4.14/lib/ocaml, /home/opam/.opam/4.14/lib/ocaml/compiler-libs
- + ocamlfind ocamlopt -a -package compiler-libs.toplevel -package result -package uchar -I src src/fmt_top.cmx -o src/fmt_top.cmxa
- + ocamlfind ocamlopt -a -package compiler-libs.toplevel -package result -package uchar -I src src/fmt_top.cmx -o src/fmt_top.cmxa
- findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/opam/.opam/4.14/lib/ocaml, /home/opam/.opam/4.14/lib/ocaml/compiler-libs
- + ocamlfind ocamlopt -shared -linkall -package result -package uchar -I src src/fmt.cmxa -o src/fmt.cmxs
- + ocamlfind ocamlc -a -package result -package uchar -I src src/fmt.cmo -o src/fmt.cma
- + ocamlfind ocamlopt -shared -linkall -package unix -package result -package uchar -I src src/fmt_tty.cmxa -o src/fmt_tty.cmxs
- + ocamlfind ocamlc -a -package unix -package result -package uchar -I src src/fmt_tty.cmo -o src/fmt_tty.cma
- + ocamlfind ocamlopt -shared -linkall -package compiler-libs.toplevel -package result -package uchar -I src src/fmt_top.cmxa -o src/fmt_top.cmxs
- + ocamlfind ocamlc -a -package compiler-libs.toplevel -package result -package uchar -I src src/fmt_top.cmo -o src/fmt_top.cma
- + ocamlfind ocamlc -a -package compiler-libs.toplevel -package result -package uchar -I src src/fmt_top.cmo -o src/fmt_top.cma
- findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/opam/.opam/4.14/lib/ocaml, /home/opam/.opam/4.14/lib/ocaml/compiler-libs
- + ocamlfind ocamlopt -shared -linkall -package compiler-libs.toplevel -package result -package uchar -I src src/fmt_top.cmxa -o src/fmt_top.cmxs
- findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/opam/.opam/4.14/lib/ocaml, /home/opam/.opam/4.14/lib/ocaml/compiler-libs
- # Parallel statistics: { count(total): 1(18), max: 6, min: 6, average(total): 6.000(1.278) }
-> compiled  fmt.0.8.5
-> removed   fmt.0.8.5
-> installed fmt.0.8.5
Done.
# To update the current shell environment, run: eval $(opam env)
2026-01-13 18:39.53 ---> saved as "7e12dfa828ef0ead805f4b27016d667a60a551f0da4d4579c4d729a0a7e45cbc"
Job succeeded
2026-01-13 18:40.04: Job succeeded