2026-09-28 15:45.59: New job: build oseq.0.4.1 (bf324581a85e)
2026-09-28 15:45.59: Waiting for resource in pool day11-builds
2026-09-28 15:49.09: Got resource from pool day11-builds
2026-09-28 15:49.09: [profile oxcaml-odoc-master] build oseq.0.4.1
2026-09-28 15:49.09: build oseq.0.4.1 (bf324581a85e)
=== DEPENDENCIES (10 transitive) ===
  base-threads.base                                  ddcab511c589
  base-unix.base                                     742554e1dbc2
  conf-autoconf.1                                    43fe4a407b7a
  conf-which.1                                       5fccb3a41099
  dune.3.22.2+ox                                     057b1ed5957b
  ocaml.5.4.0                                        74a2c67841c6
  ocaml-config.3                                     d58db97ddfef
  ocaml-variants.5.4.0+ox                            4babdc19da91
  oxcaml-compiler.5.4.0-ox7                          42053eeff39a
  seq.base                                           a53d1461208b
=== STDOUT ===
Processing: [default: loading data]
[oseq.0.4.1: dl]
[oseq.0.4.1: extract]
-> retrieved oseq.0.4.1  (https://opam.ocaml.org/cache)
[oseq: dune build]
+ /home/opam/.opam/default/bin/dune "build" "-p" "oseq" "-j" "39" (CWD=/home/opam/.opam/default/.opam-switch/build/oseq.0.4.1)
- (cd _build/default && /home/opam/.opam/default/bin/ocamlc.opt -w -40 -safe-string -warn-error -a+8 -g -bin-annot -bin-annot-occurrences -bin-annot-cms -I src/.oseq.objs/byte -I /home/opam/.opam/default/lib/seq -no-alias-deps -o src/.oseq.objs/byte/oSeq.cmi -c -intf src/OSeq.mli)
- File "src/OSeq.mli", lines 3-4, characters 8-33:
- 3 | ........module type of Seq
- 4 |   with type 'a node = 'a Seq.node
- Error: In this with constraint, the new definition of node
-        does not match its original definition in the constrained signature:
-        Type declarations do not match:
-          type 'a node = 'a Seq.node = Nil | Cons of 'a * 'a t
-        is not included in
-          type ('a : value_or_null) node =
-            'a Seq.node =
-              Nil
-            | Cons of 'a * 'a t
-        The problem is in the kinds of a parameter:
-        The layout of 'a is value_or_null.
-        But the layout of 'a must be a sublayout of value
-          because it instantiates an unannotated type parameter of node,
-          chosen to have layout value.
-        File "seq.mli", lines 102-104, characters 0-21: Expected declaration
-        File "src/OSeq.mli", line 4, characters 7-33: Actual declaration
build failed... 
[ERROR] The compilation of oseq.0.4.1 failed at "dune build -p oseq -j 39".

=== STDERR ===

2026-09-28 15:49.19: FAILED: build oseq.0.4.1
2026-09-28 15:49.19: Job failed: build failed: oseq.0.4.1