Building on ltsc2025-3
(from ocaml/opam:windows-server-mingw-ltsc2025-opam)
2026-03-08 06:31.47 ---> 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"))
2026-03-08 06:31.47 ---> 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 31db989bcaf14647d9889b8903120d6202ac37a8"))
2026-03-08 06:31.47 ---> using "ef58fca6f6db70f2bdfd85579892df7c50e047d2e179a3be59dcaa5c5a2d773c" 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.
2026-03-08 06:31.47 ---> using "c700dfaf6f2da6800841bb961abfee8cd8858dee38ab51c0793b149f1795270d" 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 mingw-w64-shims.0.2.0 (cached)
-> retrieved flexdll.0.44 (https://github.com/ocaml/flexdll/archive/refs/tags/0.44.tar.gz)
-> installed flexdll.0.44
-> 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 $(opam env --switch=mingw-5.4)
2026-03-08 06:31.47 ---> using "bde3e22405d3d4b8eb936b6a5924016abe757c72ef4284f806d0ffa633cf6608" from cache
C:/: (run (network host)
(shell "opam update --depexts"))
2026-03-08 06:31.47 ---> using "52107e23401ba5a409505a63e9d96ae2fb84390238c362f7049829fa18c5671f" from cache
C:/: (run (cache (opam-archives (target "c:\\opam\\.opam\\download-cache")))
(network host)
(shell "opam remove -y luv_unix.0.5.1\
\nopam install -vy luv_unix.0.5.1\
\nres=$?\
\nif [ $res = 31 ]; then\
\n if opam show -f x-ci-accept-failures: luv_unix.0.5.1 | 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] luv_unix.0.5.1 is not installed.
Nothing to do.
The following actions will be performed:
=== install 8 packages
- install csexp 1.5.2 [required by dune-configurator]
- install ctypes 0.24.0 [required by luv_unix]
- install dune 3.21.1 [required by luv_unix]
- install dune-configurator 3.21.1 [required by ctypes]
- install integers 0.7.0 [required by ctypes, luv]
- install luv 0.5.14 [required by luv_unix]
- install luv_unix 0.5.1
- install stdlib-shims 0.3.0 [required by integers]
<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Processing 1/23: [csexp.1.5.2: extract]
Processing 2/23: [csexp.1.5.2: extract] [ctypes.0.24.0: extract]
Processing 3/23: [csexp.1.5.2: extract] [ctypes.0.24.0: extract] [dune.3.21.1, dune-configurator.3.21.1: extract]
-> retrieved csexp.1.5.2 (cached)
Processing 3/23: [ctypes.0.24.0: extract] [dune.3.21.1, dune-configurator.3.21.1: extract]
Processing 4/23: [ctypes.0.24.0: extract] [dune.3.21.1, dune-configurator.3.21.1: extract] [integers.0.7.0: extract]
-> retrieved integers.0.7.0 (cached)
Processing 4/23: [ctypes.0.24.0: extract] [dune.3.21.1, dune-configurator.3.21.1: extract]
Processing 5/23: [ctypes.0.24.0: extract] [dune.3.21.1, dune-configurator.3.21.1: extract] [luv.0.5.14: http]
-> retrieved ctypes.0.24.0 (cached)
Processing 5/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [luv.0.5.14: http]
Processing 6/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [luv.0.5.14: http] [luv_unix.0.5.1: http]
Processing 6/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [luv.0.5.14: extract] [luv_unix.0.5.1: http]
Processing 6/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [luv.0.5.14: extract] [luv_unix.0.5.1: extract]
-> retrieved luv.0.5.14 (https://github.com/aantron/luv/releases/download/0.5.14/luv-0.5.14.tar.gz)
Processing 6/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [luv_unix.0.5.1: extract]
Processing 7/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [luv_unix.0.5.1: extract] [stdlib-shims.0.3.0: extract]
-> retrieved luv_unix.0.5.1 (https://github.com/aantron/luv/releases/download/0.5.12/luv-0.5.12.tar.gz)
Processing 7/23: [dune.3.21.1, dune-configurator.3.21.1: extract] [stdlib-shims.0.3.0: extract]
-> retrieved stdlib-shims.0.3.0 (cached)
Processing 7/23: [dune.3.21.1, dune-configurator.3.21.1: extract]
-> retrieved dune.3.21.1, dune-configurator.3.21.1 (cached)
Processing 8/23: [dune: ocaml 15]
+ C:\opam\.opam\mingw-5.4\bin\ocaml.exe "boot/bootstrap.ml" "-j" "15" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\dune.3.21.1)
- ocamlc -output-complete-exe -intf-suffix .dummy -g -o .duneboot.exe -I boot -I +unix unix.cma boot/types.ml boot/libs.ml boot/duneboot.ml
- .\.duneboot.exe -j 15
Processing 8/23: [dune: ./_boot/dune.exe build]
+ C:\opam\.opam\mingw-5.4\.opam-switch\build\dune.3.21.1\./_boot/dune.exe "build" "dune.install" "--release" "--profile" "dune-bootstrap" "-j" "15" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\dune.3.21.1)
-> compiled dune.3.21.1
-> installed dune.3.21.1
Processing 10/23: [csexp: dune build]
Processing 11/23: [csexp: dune build] [stdlib-shims: dune build]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "build" "-p" "stdlib-shims" "-j" "15" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\stdlib-shims.0.3.0)
-> compiled stdlib-shims.0.3.0
Processing 11/23: [csexp: dune build]
-> installed stdlib-shims.0.3.0
Processing 12/23: [csexp: dune build]
Processing 13/23: [csexp: dune build] [integers: dune build]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "build" "-p" "csexp" "-j" "15" "@install" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\csexp.1.5.2)
- (cd _build/default && C:\opam\.opam\mingw-5.4\bin\ocamlc.opt.exe -w -40 -g -bin-annot -bin-annot-occurrences -I src/.csexp.objs/byte -cmi-file src/.csexp.objs/byte/csexp.cmi -no-alias-deps -o src/.csexp.objs/byte/csexp.cmo -c -impl src/csexp.ml)
- File "src/csexp.ml", line 236, characters 7-14:
- 236 | [@@inlined always]
- ^^^^^^^
- Warning 53 [misplaced-attribute]: the inlined attribute cannot appear in this context
- (cd _build/default && C:\opam\.opam\mingw-5.4\bin\ocamlopt.opt.exe -w -40 -g -I src/.csexp.objs/byte -I src/.csexp.objs/native -cmi-file src/.csexp.objs/byte/csexp.cmi -no-alias-deps -o src/.csexp.objs/native/csexp.cmx -c -impl src/csexp.ml)
- File "src/csexp.ml", line 236, characters 7-14:
- 236 | [@@inlined always]
- ^^^^^^^
- Warning 53 [misplaced-attribute]: the inlined attribute cannot appear in this context
-> compiled csexp.1.5.2
Processing 13/23: [integers: dune build]
-> installed csexp.1.5.2
Processing 14/23: [integers: dune build]
Processing 15/23: [dune-configurator: rm] [integers: dune build]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "build" "-p" "integers" "-j" "15" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\integers.0.7.0)
-> compiled integers.0.7.0
Processing 15/23: [dune-configurator: rm]
-> installed integers.0.7.0
Processing 16/23: [dune-configurator: rm]
+ C:\cygwin64\bin\rm.exe "-rf" "vendor/csexp" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\dune-configurator.3.21.1)
+ C:\cygwin64\bin\rm.exe "-rf" "vendor/pp" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\dune-configurator.3.21.1)
Processing 16/23: [dune-configurator: dune build]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "build" "-p" "dune-configurator" "-j" "15" "@install" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\dune-configurator.3.21.1)
-> compiled dune-configurator.3.21.1
-> installed dune-configurator.3.21.1
Processing 18/23: [ctypes: dune build]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "build" "-p" "ctypes" "-j" "15" "--promote-install-files=false" "@install" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\ctypes.0.24.0)
- (cd _build/default/src/ctypes && C:\cygwin64\bin\x86_64-w64-mingw32-gcc.exe -O2 -fno-strict-aliasing -fwrapv -mms-bitfields -Wall -fdiagnostics-color=always -g -I C:/opam/.opam/mingw-5.4/lib/ocaml -I C:\opam\.opam\mingw-5.4\lib\integers -I C:\opam\.opam\mingw-5.4\lib\stdlib-shims -o type_info_stubs.o -c type_info_stubs.c)
- type_info_stubs.c: In function ‘ctypes_string_of_prim’:
- type_info_stubs.c:147:57: warning: unknown conversion type character ‘z’ in format [-Wformat=]
- 147 | case Ctypes_Size_t: len = snprintf(buf, sizeof buf, "%zu", (size_t)ctypes_size_t_val(v)); break;
- | ^
- type_info_stubs.c:147:55: warning: too many arguments for format [-Wformat-extra-args]
- 147 | case Ctypes_Size_t: len = snprintf(buf, sizeof buf, "%zu", (size_t)ctypes_size_t_val(v)); break;
- | ^~~~~
- type_info_stubs.c:162:62: warning: format ‘%Lg’ expects argument of type ‘double’, but argument 4 has type ‘long double’ [-Wformat=]
- 162 | case Ctypes_LDouble: len = snprintf(buf, sizeof buf, "%.12Lg", ctypes_ldouble_val(v)); break;
- | ~~~~~^ ~~~~~~~~~~~~~~~~~~~~~
- | | |
- | | long double
- | double
- type_info_stubs.c:175:43: warning: format ‘%Lg’ expects argument of type ‘double’, but argument 4 has type ‘long double’ [-Wformat=]
- 175 | len = snprintf(buf, sizeof buf, "%.12Lg+%.12Lgi", ctypes_compat_creall(c), ctypes_compat_cimagl(c));
- | ~~~~~^ ~~~~~~~~~~~~~~~~~~~~~~~
- | | |
- | double long double
- type_info_stubs.c:175:50: warning: format ‘%Lg’ expects argument of type ‘double’, but argument 5 has type ‘long double’ [-Wformat=]
- 175 | len = snprintf(buf, sizeof buf, "%.12Lg+%.12Lgi", ctypes_compat_creall(c), ctypes_compat_cimagl(c));
- | ~~~~~^ ~~~~~~~~~~~~~~~~~~~~~~~
- | | |
- | double long double
- (cd _build/default/src/ctypes && C:\cygwin64\bin\x86_64-w64-mingw32-gcc.exe -O2 -fno-strict-aliasing -fwrapv -mms-bitfields -Wall -fdiagnostics-color=always -g -I C:/opam/.opam/mingw-5.4/lib/ocaml -I C:\opam\.opam\mingw-5.4\lib\integers -I C:\opam\.opam\mingw-5.4\lib\stdlib-shims -o ldouble_stubs.o -c ldouble_stubs.c)
- ldouble_stubs.c: In function ‘format_ldouble’:
- ldouble_stubs.c:369:39: warning: format ‘%Lf’ expects argument of type ‘double’, but argument 6 has type ‘long double’ [-Wformat=]
- 369 | print_len = snprintf(NULL, 0, "%*.*Lf", width, prec, d);
- | ~~~~~^ ~
- | | |
- | double long double
- ldouble_stubs.c:379:36: warning: format ‘%Lf’ expects argument of type ‘double’, but argument 6 has type ‘long double’ [-Wformat=]
- 379 | snprintf(buf, print_len+1, "%*.*Lf", width, prec, d);
- | ~~~~~^ ~
- | | |
- | double long double
Processing 18/23: [ctypes: dune install]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "install" "-p" "ctypes" "--create-install-files" "ctypes" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\ctypes.0.24.0)
-> compiled ctypes.0.24.0
-> installed ctypes.0.24.0
Processing 20/23: [luv: dune build]
+ C:\opam\.opam\mingw-5.4\bin\dune.exe "build" "-p" "luv" "-j" "15" (CWD=C:\opam\.opam\mingw-5.4\.opam-switch\build\luv.0.5.14)
- File "_build/.dune/default/src/c/dune", lines 47-66, characters 0-815:
- 47 | (rule
- 48 | (targets libuv.a dlluv%{ext_dll})
- 49 | (deps (source_tree vendor))
- ....
- 64 | "cp vendor/libuv/libuv.so.1.0.0 dlluv.so || \
- 65 | cp vendor/libuv/libuv.1.dylib dlluv.so || \
- 66 | cp vendor/bin/libuv-1.dll dlluv.dll")))))
- (cd _build/default/src/c/vendor/libuv && C:\cygwin64\bin\bash.exe -e -u -o pipefail -c "sh configure --host `ocamlc -config | awk '/^host:/ {print $NF}'` 'CC=x86_64-w64-mingw32-gcc -O2 -fno-strict-aliasing -fwrapv -mms-bitfields' CFLAGS=-DNDEBUG --silent --enable-silent-rules")
- configure: error: could not determine link -lib interface
[ERROR] The compilation of luv.0.5.14 failed at "dune build -p luv -j 15".
#=== ERROR while compiling luv.0.5.14 =========================================#
# context 2.5.0 | win32/x86_64 | ocaml-base-compiler.5.4.0 | git+file://C:/cygwin64/home/opam/opam-repository
# path C:\opam\.opam\mingw-5.4\.opam-switch\build\luv.0.5.14
# command C:\opam\.opam\mingw-5.4\bin\dune.exe build -p luv -j 15
# exit-code 1
# env-file C:\opam\.opam\log\luv-27960-8a405f.env
# output-file C:\opam\.opam\log\luv-27960-8a405f.out
### output ###
# File "_build/.dune/default/src/c/dune", lines 47-66, characters 0-815:
# 47 | (rule
# 48 | (targets libuv.a dlluv%{ext_dll})
# 49 | (deps (source_tree vendor))
# ....
# 64 | "cp vendor/libuv/libuv.so.1.0.0 dlluv.so || \
# 65 | cp vendor/libuv/libuv.1.dylib dlluv.so || \
# 66 | cp vendor/bin/libuv-1.dll dlluv.dll")))))
# (cd _build/default/src/c/vendor/libuv && C:\cygwin64\bin\bash.exe -e -u -o pipefail -c "sh configure --host `ocamlc -config | awk '/^host:/ {print $NF}'` 'CC=x86_64-w64-mingw32-gcc -O2 -fno-strict-aliasing -fwrapv -mms-bitfields' CFLAGS=-DNDEBUG --silent --enable-silent-rules")
# configure: error: could not determine link -lib interface
<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
+- The following actions were aborted
| - install luv_unix 0.5.1
+-
+- The following actions failed
| - build luv 0.5.14
+-
+- The following changes have been performed (the rest was aborted)
| - install csexp 1.5.2
| - install ctypes 0.24.0
| - install dune 3.21.1
| - install dune-configurator 3.21.1
| - install integers 0.7.0
| - install stdlib-shims 0.3.0
+-
# To update the current shell environment, run: eval $(opam env)
The former state can be restored with:
C:\cygwin64\usr\local\bin\opam.exe switch import "C:\\opam\\.opam\\mingw-5.4\\.opam-switch\\backup\\state-20260308063227.export"
'C:\cygwin64\usr\local\bin\opam.exe install -vy luv_unix.0.5.1' failed.
"C:\cygwin64\bin\bash.exe" "-lc" "opam remove -y luv_unix.0.5.1
opam install -vy luv_unix.0.5.1
res=$?
if [ $res = 31 ]; then
if opam show -f x-ci-accept-failures: luv_unix.0.5.1 | 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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