2026-10-06 18:13.56: New job: build visitors.20250212 (f7e23f16fd29)
2026-10-06 18:13.56: Waiting for resource in pool day11-builds
2026-10-06 18:19.21: Got resource from pool day11-builds
2026-10-06 18:19.21: [profile oxcaml-odoc-master] build visitors.20250212
2026-10-06 18:19.21: build visitors.20250212 (f7e23f16fd29)
=== DEPENDENCIES (22 transitive) ===
  base-threads.base                                  464810371b96
  base-unix.base                                     4596d20d2cf7
  basement.v0.18~preview.130.83+317                  5a082dee44ba
  conf-autoconf.1                                    8ee1e3913008
  conf-which.1                                       65c43ca119c3
  cppo.1.8.0                                         e16aa16befbb
  dune.3.22.2+ox                                     c16d8afadb18
  ocaml.5.2.0                                        9d46674255e6
  ocaml-compiler-libs.v0.17.0+ox                     14922d822522
  ocaml-config.3                                     15a28f46f03a
  ocaml-variants.5.2.0+ox                            807c3ef9c420
  ocamlfind.1.9.8+ox                                 747b1b555a03
  oxcaml-compiler.5.2.0minus25                       0929841197b1
  ppx_derivers.1.2.1                                 32fdf6aeaa22
  ppx_deriving.6.1.1+ox                              23bb9d328d89
  ppxlib.0.33.0+ox                                   91adba82e909
  ppxlib_ast.0.33.0+ox                               fb8a034045c0
  ppxlib_jane.v0.18~preview.130.83+317               663fbe433471
  result.1.5                                         de15f912fe84
  sexp_type.v0.18~preview.130.83+317                 f4b7181e44c7
  sexplib0.v0.18~preview.130.83+317                  b097e7dc4ae1
  stdlib-shims.0.3.0                                 fc997682ec0f
=== STDOUT ===
Processing: [default: loading data]
[visitors.20250212: dl]
[visitors.20250212: extract]
-> retrieved visitors.20250212  (https://opam.ocaml.org/cache)
[visitors: dune build]
+ /home/opam/.opam/default/bin/dune "build" "-p" "visitors" "-j" "39" (CWD=/home/opam/.opam/default/.opam-switch/build/visitors.20250212)
- (cd _build/default && /home/opam/.opam/default/bin/ocamlc.opt -w -40 -safe-string -g -g -bin-annot -bin-annot-occurrences -bin-annot-cms -I src/.ppx_deriving_visitors.objs/byte -I /home/opam/.opam/default/lib/basement -I /home/opam/.opam/default/lib/ocaml-compiler-libs/common -I /home/opam/.opam/default/lib/ocaml-compiler-libs/shadow -I /home/opam/.opam/default/lib/ocaml/compiler-libs -I /home/opam/.opam/default/lib/ppx_derivers -I /home/opam/.opam/default/lib/ppx_deriving/api -I /home/opam/.opam/default/lib/ppxlib -I /home/opam/.opam/default/lib/ppxlib/print_diff -I /home/opam/.opam/default/lib/ppxlib_ast/ast -I /home/opam/.opam/default/lib/ppxlib_ast/astlib -I /home/opam/.opam/default/lib/ppxlib_ast/stdppx -I /home/opam/.opam/default/lib/ppxlib_ast/traverse_builtins -I /home/opam/.opam/default/lib/ppxlib_jane -I /home/opam/.opam/default/lib/result -I /home/opam/.opam/default/lib/sexp_type -I /home/opam/.opam/default/lib/sexp_type/grammar -I /home/opam/.opam/default/lib/sexplib0 -I /home/opam/.opam/default/lib/stdlib-shims -no-alias-deps -open Ppx_deriving_visitors -o src/.ppx_deriving_visitors.objs/byte/ppx_deriving_visitors__VisitorsCompatibility.cmo -c -impl src/VisitorsCompatibility.ml)
- File "src/VisitorsCompatibility.ml", line 27, characters 2-10:
- 27 |   Exp.fun_ Nolabel None p e
-        ^^^^^^^^
- Alert prefer_jane_syntax: Ppxlib.Ast_helper.Exp.fun_
- Use [Ppxlib_jane.Ast_builder] for constructing functions ASTs that are handed to the ocaml compiler, e.g. in ppxes
- (cd _build/default && /home/opam/.opam/default/bin/ocamlc.opt -w -40 -safe-string -g -g -bin-annot -bin-annot-occurrences -bin-annot-cms -I src/.ppx_deriving_visitors.objs/byte -I /home/opam/.opam/default/lib/basement -I /home/opam/.opam/default/lib/ocaml-compiler-libs/common -I /home/opam/.opam/default/lib/ocaml-compiler-libs/shadow -I /home/opam/.opam/default/lib/ocaml/compiler-libs -I /home/opam/.opam/default/lib/ppx_derivers -I /home/opam/.opam/default/lib/ppx_deriving/api -I /home/opam/.opam/default/lib/ppxlib -I /home/opam/.opam/default/lib/ppxlib/print_diff -I /home/opam/.opam/default/lib/ppxlib_ast/ast -I /home/opam/.opam/default/lib/ppxlib_ast/astlib -I /home/opam/.opam/default/lib/ppxlib_ast/stdppx -I /home/opam/.opam/default/lib/ppxlib_ast/traverse_builtins -I /home/opam/.opam/default/lib/ppxlib_jane -I /home/opam/.opam/default/lib/result -I /home/opam/.opam/default/lib/sexp_type -I /home/opam/.opam/default/lib/sexp_type/grammar -I /home/opam/.opam/default/lib/sexplib0 -I /home/opam/.opam/default/lib/stdlib-shims -no-alias-deps -open Ppx_deriving_visitors -o src/.ppx_deriving_visitors.objs/byte/ppx_deriving_visitors__VisitorsAnalysis.cmo -c -impl src/VisitorsAnalysis.ml)
- File "src/VisitorsAnalysis.ml", line 202, characters 4-15:
- 202 |   | Ptyp_var tv ->
-           ^^^^^^^^^^^
- Error: The constructor "Ptyp_var" expects 2 argument(s),
-        but is applied here to 1 argument(s)
- (cd _build/default && /home/opam/.opam/default/bin/ocamlopt.opt -w -40 -safe-string -g -g -I src/.ppx_deriving_visitors.objs/byte -I src/.ppx_deriving_visitors.objs/native -I /home/opam/.opam/default/lib/basement -I /home/opam/.opam/default/lib/ocaml-compiler-libs/common -I /home/opam/.opam/default/lib/ocaml-compiler-libs/shadow -I /home/opam/.opam/default/lib/ocaml/compiler-libs -I /home/opam/.opam/default/lib/ppx_derivers -I /home/opam/.opam/default/lib/ppx_deriving/api -I /home/opam/.opam/default/lib/ppxlib -I /home/opam/.opam/default/lib/ppxlib/print_diff -I /home/opam/.opam/default/lib/ppxlib_ast/ast -I /home/opam/.opam/default/lib/ppxlib_ast/astlib -I /home/opam/.opam/default/lib/ppxlib_ast/stdppx -I /home/opam/.opam/default/lib/ppxlib_ast/traverse_builtins -I /home/opam/.opam/default/lib/ppxlib_jane -I /home/opam/.opam/default/lib/result -I /home/opam/.opam/default/lib/sexp_type -I /home/opam/.opam/default/lib/sexp_type/grammar -I /home/opam/.opam/default/lib/sexplib0 -I /home/opam/.opam/default/lib/stdlib-shims -cmi-file src/.ppx_deriving_visitors.objs/byte/ppx_deriving_visitors__VisitorsCompatibility.cmi -no-alias-deps -open Ppx_deriving_visitors -o src/.ppx_deriving_visitors.objs/native/ppx_deriving_visitors__VisitorsCompatibility.cmx -c -impl src/VisitorsCompatibility.ml)
- File "src/VisitorsCompatibility.ml", line 27, characters 2-10:
- 27 |   Exp.fun_ Nolabel None p e
-        ^^^^^^^^
- Alert prefer_jane_syntax: Ppxlib.Ast_helper.Exp.fun_
- Use [Ppxlib_jane.Ast_builder] for constructing functions ASTs that are handed to the ocaml compiler, e.g. in ppxes
[ERROR] The compilation of visitors.20250212 failed at "dune build -p visitors -j 39".
build failed... 

=== STDERR ===

2026-10-06 18:19.40: FAILED: build visitors.20250212
2026-10-06 18:19.40: Job failed: build failed: visitors.20250212