2026-09-19 23:23.38: New job: Build using windows-x86_64 in
                                []
2026-09-19 23:23.38: Will push staging image to ocurrent/opam-staging:windows-server-msvc-ltsc2025-ocaml-5.5-amd64

Dockerfile:

# escape=`

FROM ocurrent/opam-staging@sha256:b4822f29c882e96dc3c34902c31f4385c1177cde61602b160a8d182b2d2d8994
ENV OPAMYES="1" OPAMCONFIRMLEVEL="unsafe-yes" OPAMERRLOGLEN="0" OPAMPRECISETRACKING="1"
RUN opam switch create 5.5 --packages=ocaml-base-compiler.5.5.1,system-msvc
RUN opam pin add -k version ocaml-base-compiler 5.5.1
ENTRYPOINT [ "opam", "exec", "--" ]
CMD [ "cmd.exe" ]
COPY [ "Dockerfile", "/Dockerfile.ocaml" ]


2026-09-19 23:23.38: Using cache hint "5.5.1-amd64-ocurrent/opam-staging@sha256:b4822f29c882e96dc3c34902c31f4385c1177cde61602b160a8d182b2d2d8994"
2026-09-19 23:23.38: Waiting for resource in pool OCluster
2026-09-19 23:23.38: Waiting for worker…
2026-09-19 23:23.38: Got resource from pool OCluster
Building on ltsc2025-3
Sending build context to Docker daemon  2.048kB

Step 1/7 : FROM ocurrent/opam-staging@sha256:b4822f29c882e96dc3c34902c31f4385c1177cde61602b160a8d182b2d2d8994
docker.io/ocurrent/opam-staging@sha256:b4822f29c882e96dc3c34902c31f4385c1177cde61602b160a8d182b2d2d8994: Pulling from ocurrent/opam-staging
Digest: sha256:b4822f29c882e96dc3c34902c31f4385c1177cde61602b160a8d182b2d2d8994
Status: Image is up to date for ocurrent/opam-staging@sha256:b4822f29c882e96dc3c34902c31f4385c1177cde61602b160a8d182b2d2d8994
 ---> d256a17cb5fb
Step 2/7 : ENV OPAMYES="1" OPAMCONFIRMLEVEL="unsafe-yes" OPAMERRLOGLEN="0" OPAMPRECISETRACKING="1"
 ---> Running in 4f9c9de9390f
 ---> Removed intermediate container 4f9c9de9390f
 ---> 216dd4f9bfb6
Step 3/7 : RUN opam switch create 5.5 --packages=ocaml-base-compiler.5.5.1,system-msvc
 ---> Running in a86c1ea370f4

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.5.1"} "system-msvc"]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
-> installed arch-x86_64.1
-> installed base-bigarray.base
-> installed base-threads.base
-> installed base-unix.base
-> installed compiler-cloning.enabled
-> installed host-arch-x86_64.1
-> installed host-system-msvc.1
-> retrieved ocaml.5.5.1  (https://raw.githubusercontent.com/ocaml/ocaml/5799ec070df18cec96e5d828bc8e10b86cb0ed2c/tools/opam/gen_ocaml_config.ml)
-> retrieved flexdll.0.44  (https://github.com/ocaml/flexdll/archive/refs/tags/0.44.tar.gz)
-> installed flexdll.0.44
-> installed ocaml-option-no-compression.1
-> installed ocaml-options-vanilla.1
-> retrieved msvs-detect.0.8.0  (https://github.com/metastack/msvs-tools/archive/refs/tags/0.8.0.tar.gz)
-> installed msvs-detect.0.8.0
-> retrieved ocaml-compiler.5.5.1  (https://github.com/ocaml/ocaml/releases/download/5.5.1/ocaml-5.5.1.tar.gz)
-> installed conf-msvc64.1
-> installed ocaml-env-msvc64.1
-> installed system-msvc.1
-> installed ocaml-compiler.5.5.1
-> installed ocaml-base-compiler.5.5.1
-> installed ocaml.5.5.1
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
Done.

<><> ocaml-compiler.5.5.1 installed successfully ><><><><><><><><><><><><><><><>
=> This switch had to be compiled from sources, but future switches with the 🐌
   same compiler version and configuration should assemble instantly.

<><> conf-msvc64.1 installed successfully <><><><><><><><><><><><><><><><><><><>
=> The Microsoft C compiler has been located in the environment which suggests opam
   is running either from a Tools Command Prompt or from another wrapper which is
   updating the environment variables.

   opam has not altered these environment settings, but you will need to ensure
   that future invocations of opam are done from the same environment, or the
   compiler will be unavailable.
# Run for /f "tokens=*" %i in ('opam env --switch=5.5') do @%i to update the current shell environment
 ---> Removed intermediate container a86c1ea370f4
 ---> ec7bcc78c177
Step 4/7 : RUN opam pin add -k version ocaml-base-compiler 5.5.1
 ---> Running in b1044682c93c
ocaml-base-compiler is now pinned to version 5.5.1

Already up-to-date.
Nothing to do.
# Run for /f "tokens=*" %i in ('opam env') do @%i to update the current shell environment
 ---> Removed intermediate container b1044682c93c
 ---> de5d0dceee15
Step 5/7 : ENTRYPOINT [ "opam", "exec", "--" ]
 ---> Running in 383da30eb39f
 ---> Removed intermediate container 383da30eb39f
 ---> 85cd050c6027
Step 6/7 : CMD [ "cmd.exe" ]
 ---> Running in c2e96bbecb58
 ---> Removed intermediate container c2e96bbecb58
 ---> eca248ab1c06
Step 7/7 : COPY [ "Dockerfile", "/Dockerfile.ocaml" ]
 ---> 18b44a4db948
Successfully built 18b44a4db948
Pushing "sha256:18b44a4db9482f64d2f9a9e9e4008f16c0746193090a6313a9494903881b0bfa" to "ocurrent/opam-staging:windows-server-msvc-ltsc2025-ocaml-5.5-amd64" as user "ocurrentbuilder"
Login Succeeded
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windows-server-msvc-ltsc2025-ocaml-5.5-amd64: digest: sha256:b59c71cc4434c60cac584fc5e154ac22d4c083e3a0642e437a4dafd1c9b22d0e size: 13159
Job succeeded
2026-09-20 00:19.11: Job succeeded