2026-10-07 08:31.28: New job: build mlmpfr.4.2.0 (40d5f35a3db9)
2026-10-07 08:31.28: Waiting for resource in pool day11-builds
2026-10-07 11:00.04: Got resource from pool day11-builds
2026-10-07 11:00.04: [profile full] build mlmpfr.4.2.0
2026-10-07 11:00.04: build mlmpfr.4.2.0 (40d5f35a3db9)
=== DEPENDENCIES (12 transitive) ===
  base-threads.base                                  464810371b96
  base-unix.base                                     4596d20d2cf7
  compiler-cloning.enabled                           a13866103a7b
  conf-gmp.5                                         c2adbec9a470
  conf-mpfr.3                                        d57e416eee12
  conf-pkg-config.5                                  e39f7209b38f
  csexp.1.5.2                                        b96efdeb2d5f
  dune.3.24.2                                        99dad2c0d74f
  dune-configurator.3.24.2                           7520decaab4b
  ocaml.5.5.1                                        3d940b39ad2d
  ocaml-base-compiler.5.5.1                          5cf781414aed
  ocaml-compiler.5.5.1                               9ea90032811f
=== STDOUT ===
Processing: [default: loading data]
[mlmpfr.4.2.0: dl]
[mlmpfr.4.2.0: extract]
[mlmpfr.4.2.0/mlmpfr_compatibility_test.c: dl]
-> retrieved mlmpfr.4.2.0  (https://opam.ocaml.org/cache)
[mlmpfr: cc mlmpfr_compatibility_test.c]
+ /usr/bin/cc "mlmpfr_compatibility_test.c" "-lmpfr" "-o" "mlmpfr_compatibility_test" (CWD=/home/opam/.opam/default/.opam-switch/build/mlmpfr.4.2.0)
[mlmpfr: ./mlmpfr_compatibility_test]
+ /home/opam/.opam/default/.opam-switch/build/mlmpfr.4.2.0/./mlmpfr_compatibility_test  (CWD=/home/opam/.opam/default/.opam-switch/build/mlmpfr.4.2.0)
[mlmpfr: dune build]
+ /home/opam/.opam/default/bin/dune "build" "-p" "mlmpfr" "-j" "39" (CWD=/home/opam/.opam/default/.opam-switch/build/mlmpfr.4.2.0)
[ERROR] The compilation of mlmpfr.4.2.0 failed at "dune build -p mlmpfr -j 39".
- File "src/dune", line 6, characters 36-48:
- 6 |  (foreign_stubs (language c) (names mlmpfr_stubs) (flags (:include c_flags.sexp)))
-                                         ^^^^^^^^^^^^
- (cd _build/default/src && /usr/bin/gcc -O2 -Wall -Wextra -fPIC -g -I /home/opam/.opam/default/lib/ocaml -o mlmpfr_stubs.o -c mlmpfr_stubs.c)
- In file included from /home/opam/.opam/default/lib/ocaml/caml/io.h:26,
-                  from mlmpfr_stubs.h:315,
-                  from mlmpfr_stubs.c:17:
- /home/opam/.opam/default/lib/ocaml/caml/platform.h: In function 'caml_plat_latch_is_released':
- /home/opam/.opam/default/lib/ocaml/caml/platform.h:393:10: error: implicit declaration of function 'atomic_load_acquire' [-Wimplicit-function-declaration]
-   393 |   return atomic_load_acquire(&latch->value) == Latch_released;
-       |          ^~~~~~~~~~~~~~~~~~~
- /home/opam/.opam/default/lib/ocaml/caml/platform.h: In function 'caml_plat_latch_set':
- /home/opam/.opam/default/lib/ocaml/caml/platform.h:401:3: error: implicit declaration of function 'atomic_store_release'; did you mean 'atomic_store_explicit'? [-Wimplicit-function-declaration]
-   401 |   atomic_store_release(&latch->value, Latch_unreleased);
-       |   ^~~~~~~~~~~~~~~~~~~~
-       |   atomic_store_explicit
build failed... 

=== STDERR ===

2026-10-07 11:01.02: FAILED: build mlmpfr.4.2.0
2026-10-07 11:01.02: Job failed: build failed: mlmpfr.4.2.0