Building on ltsc2025-2
(from ocaml/opam:windows-server-mingw-ltsc2025-opam)
2026-03-27 08:29.01 ---> using "63e5ddb9687855d0a0c4c5e0088f813758807605401f3a88b07751088826ddff" from cache
C:/: (user (uid 1000) (gid 1000))
C:/: (env OPAMPRECISETRACKING 1)
C:/: (env OPAMUTF8 never)
C:/: (env OPAMEXTERNALSOLVER builtin-0install)
C:/: (env OPAMCRITERIA +removed)
C:/: (env CI true)
C:/: (env OPAM_HEALTH_CHECK_CI true)
C:/: (run (shell "ln -f /usr/local/bin/opam-dev.exe /usr/local/bin/opam.exe"))
2026-03-27 08:29.01 ---> using "eb751f1617949fccf400da87a349c508e73323f3f0e3482f2cce8c46fbcb6c21" from cache
C:/: (run (network host)
(shell "rm -rf ~/opam-repository && git clone -q 'https://github.com/ocaml/opam-repository' ~/opam-repository && git -C ~/opam-repository checkout -q e589be2bb3f3c3428c9c98a122428f3ad2d44845"))
2026-03-27 08:29.01 ---> using "e45ceda38848c636c52a582b7b0e0300f8265fd055608e2010eb9091af016259" from cache
C:/: (run (shell "rm -rf ~/.opam && opam init -ya --bare ~/opam-repository"))
User configuration:
Updating ~\.bashrc.
[NOTE] Make sure that ~/.bashrc is well sourced in your ~\.bash_profile.
Added 9 lines after line 1 in ~\.bashrc.
2026-03-27 08:29.01 ---> using "fca0867f47a2fc38aa8538df0aa1321357eb4edfd9be8bd5b70f35382e16c023" from cache
C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
(network host)
(shell "opam switch create --repositories=default 'mingw-5.4' '5.4.0'"))
<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.4.0"}]
<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed arch-x86_64.1
-> installed base-bigarray.base
-> installed base-threads.base
-> installed base-unix.base
-> installed host-arch-x86_64.1
-> installed host-system-mingw.1
-> retrieved flexdll.0.44 (https://github.com/ocaml/flexdll/archive/refs/tags/0.44.tar.gz)
-> installed flexdll.0.44
-> retrieved mingw-w64-shims.0.2.0 (https://github.com/dra27/mingw-w64-shims/archive/refs/tags/0.2.0.tar.gz)
-> installed ocaml-options-vanilla.1
-> installed conf-mingw-w64-gcc-x86_64.1
-> installed ocaml-env-mingw64.1
-> installed system-mingw.1
-> retrieved ocaml-config.3 (2 extra sources)
-> retrieved ocaml-config.3 (2 extra sources)
-> installed mingw-w64-shims.0.2.0
-> retrieved ocaml-compiler.5.4.0 (https://github.com/ocaml/ocaml/releases/download/5.4.0/ocaml-5.4.0.tar.gz)
-> installed ocaml-compiler.5.4.0
-> installed ocaml-base-compiler.5.4.0
-> installed ocaml-config.3
-> installed ocaml.5.4.0
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
Done.
# To update the current shell environment, run: eval $(opam env --switch=mingw-5.4)
2026-03-27 08:29.01 ---> using "50e23bda8cb7e182e2fb806cb3f1c6566c93ab53027ddfe1f4220b08bd2bf8f7" from cache
C:/: (run (network host)
(shell "opam update --depexts"))
2026-03-27 08:29.01 ---> using "882bc898cf68e632dee31003c12789c688566b3783a36d413db7b6a44325a086" from cache
C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
(network host)
(shell "opam remove -y wasm_of_ocaml-compiler.6.3.2\
\nopam install -vy wasm_of_ocaml-compiler.6.3.2\
\nres=$?\
\nif [ $res = 31 ]; then\
\n if opam show -f x-ci-accept-failures: wasm_of_ocaml-compiler.6.3.2 | grep -q 'ocaml/opam:windows-server-mingw-ltsc2025-opam'; then\
\n echo \"This package failed and has been disabled for CI using the 'x-ci-accept-failures' field.\"\
\n exit 69\
\n fi\
\nfi \
\n\
\n\
\nexit $res"))
[NOTE] wasm_of_ocaml-compiler.6.3.2 is not installed.
Nothing to do.
The following actions will be performed:
=== install 20 packages
- install cmdliner 2.1.0 [required by wasm_of_ocaml-compiler]
- install conf-binaryen 1 [required by wasm_of_ocaml-compiler]
- install dune 3.21.1 [required by wasm_of_ocaml-compiler]
- install gen 1.1 [required by sedlex]
- install js_of_ocaml 6.3.2 [required by wasm_of_ocaml-compiler]
- install js_of_ocaml-compiler 6.3.2 [required by js_of_ocaml]
- install menhir 20260209 [required by wasm_of_ocaml-compiler]
- install menhirCST 20260209 [required by menhir]
- install menhirGLR 20260209 [required by menhir]
- install menhirLib 20260209 [required by wasm_of_ocaml-compiler]
- install menhirSdk 20260209 [required by wasm_of_ocaml-compiler]
- install ocaml-compiler-libs v0.17.0 [required by js_of_ocaml-compiler]
- install ppx_derivers 1.2.1 [required by ppxlib]
- install ppxlib 0.38.0~5.5preview [required by wasm_of_ocaml-compiler]
- install sedlex 3.7 [required by wasm_of_ocaml-compiler]
- install seq base [required by gen]
- install sexplib0 v0.17.0 [required by ppxlib]
- install stdlib-shims 0.3.0 [required by ppxlib]
- install wasm_of_ocaml-compiler 6.3.2
- install yojson 3.0.0 [required by wasm_of_ocaml-compiler]
<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing 1/54: [cmdliner.2.1.0: extract]
Processing 2/54: [cmdliner.2.1.0: extract]
Processing 3/54: [cmdliner.2.1.0: extract] [dune.3.21.1: extract]
Processing 4/54: [cmdliner.2.1.0: extract] [dune.3.21.1: extract] [gen.1.1: extract]
-> retrieved cmdliner.2.1.0 (cached)
-> retrieved gen.1.1 (cached)
#=== ERROR while compiling conf-binaryen.1 ====================================#
"wasm-opt": command not found.
<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions were aborted
| - fetch cmdliner 2.1.0
| - fetch gen 1.1
| - fetch js_of_ocaml.6.3.2, js_of_ocaml-compiler.6.3.2, wasm_of_ocaml-compiler.6.3.2
| - fetch menhir.20260209, menhirCST.20260209, menhirGLR.20260209, menhirLib.20260209, menhirSdk.20260209
| - fetch ocaml-compiler-libs v0.17.0
| - fetch ppx_derivers 1.2.1
| - fetch ppxlib 0.38.0~5.5preview
| - fetch sedlex 3.7
| - fetch seq base
| - fetch sexplib0 v0.17.0
| - fetch stdlib-shims 0.3.0
| - fetch yojson 3.0.0
| - install cmdliner 2.1.0
| - install gen 1.1
| - install js_of_ocaml 6.3.2
| - install js_of_ocaml-compiler 6.3.2
| - install menhir 20260209
| - install menhirCST 20260209
| - install menhirGLR 20260209
| - install menhirLib 20260209
| - install menhirSdk 20260209
| - install ocaml-compiler-libs v0.17.0
| - install ppx_derivers 1.2.1
| - install ppxlib 0.38.0~5.5preview
| - install sedlex 3.7
| - install seq base
| - install sexplib0 v0.17.0
| - install stdlib-shims 0.3.0
| - install wasm_of_ocaml-compiler 6.3.2
| - install yojson 3.0.0
+-
+- The following actions failed
| - fetch dune 3.21.1
| - build conf-binaryen 1
+-
- No changes have been performed
<><> conf-binaryen.1 troubleshooting ><><><><><><><><><><><><><><><><><><><><><>
=> Please install binaryen manually, as there is no known package
for it for your distribution.
# To update the current shell environment, run: eval $(opam env)
'C:\cygwin64\usr\local\bin\opam.exe install -vy wasm_of_ocaml-compiler.6.3.2' failed.
"C:\cygwin64\bin\bash.exe" "-lc" "opam remove -y wasm_of_ocaml-compiler.6.3.2
opam install -vy wasm_of_ocaml-compiler.6.3.2
res=$?
if [ $res = 31 ]; then
if opam show -f x-ci-accept-failures: wasm_of_ocaml-compiler.6.3.2 | grep -q 'ocaml/opam:windows-server-mingw-ltsc2025-opam'; then
echo "This package failed and has been disabled for CI using the 'x-ci-accept-failures' field."
exit 69
fi
fi
exit $res" failed with exit status 31
Failed: Build failed
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