2026-08-24 16:30.02: New job: Build using windows-x86_64 in
                                []
2026-08-24 16:30.02: Will push staging image to ocurrent/opam-staging:windows-server-msvc-ltsc2025-ocaml-5.5-amd64

Dockerfile:

# escape=`

FROM ocurrent/opam-staging@sha256:9fa20e99e3643a364eea9fdcae7728fbcbd50d10eba7264cdabbe1088991b714
ENV OPAMYES="1" OPAMCONFIRMLEVEL="unsafe-yes" OPAMERRLOGLEN="0" OPAMPRECISETRACKING="1"
RUN opam switch create 5.5 --packages=ocaml-base-compiler.5.5.0,system-msvc
RUN opam pin add -k version ocaml-base-compiler 5.5.0
ENTRYPOINT [ "opam", "exec", "--" ]
CMD [ "cmd.exe" ]
COPY [ "Dockerfile", "/Dockerfile.ocaml" ]


2026-08-24 16:30.02: Using cache hint "5.5.0-amd64-ocurrent/opam-staging@sha256:9fa20e99e3643a364eea9fdcae7728fbcbd50d10eba7264cdabbe1088991b714"
2026-08-24 16:30.02: Waiting for resource in pool OCluster
2026-08-25 19:11.49: Waiting for worker…
2026-08-26 10:45.03: Got resource from pool OCluster
Building on ltsc2025-3
Sending build context to Docker daemon  2.048kB

Step 1/7 : FROM ocurrent/opam-staging@sha256:9fa20e99e3643a364eea9fdcae7728fbcbd50d10eba7264cdabbe1088991b714
docker.io/ocurrent/opam-staging@sha256:9fa20e99e3643a364eea9fdcae7728fbcbd50d10eba7264cdabbe1088991b714: Pulling from ocurrent/opam-staging
Digest: sha256:9fa20e99e3643a364eea9fdcae7728fbcbd50d10eba7264cdabbe1088991b714
Status: Image is up to date for ocurrent/opam-staging@sha256:9fa20e99e3643a364eea9fdcae7728fbcbd50d10eba7264cdabbe1088991b714
 ---> ab7ec26061ed
Step 2/7 : ENV OPAMYES="1" OPAMCONFIRMLEVEL="unsafe-yes" OPAMERRLOGLEN="0" OPAMPRECISETRACKING="1"
 ---> Using cache
 ---> 92f41c4e82f1
Step 3/7 : RUN opam switch create 5.5 --packages=ocaml-base-compiler.5.5.0,system-msvc
 ---> Running in 480c2d1fc4e5

<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
Switch invariant: ["ocaml-base-compiler" {= "5.5.0"} "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 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 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 ocaml.5.5.0  (https://raw.githubusercontent.com/ocaml/ocaml/5799ec070df18cec96e5d828bc8e10b86cb0ed2c/tools/opam/gen_ocaml_config.ml)
-> retrieved ocaml-compiler.5.5.0  (https://github.com/ocaml/ocaml/releases/download/5.5.0/ocaml-5.5.0.tar.gz)
-> installed conf-msvc64.1
-> installed ocaml-env-msvc64.1
-> installed system-msvc.1
-> installed ocaml-compiler.5.5.0
-> installed ocaml-base-compiler.5.5.0
-> installed ocaml.5.5.0
-> installed base-domains.base
-> installed base-effects.base
-> installed base-nnp.base
Done.

<><> ocaml-compiler.5.5.0 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 480c2d1fc4e5
 ---> 4d4edd146fd2
Step 4/7 : RUN opam pin add -k version ocaml-base-compiler 5.5.0
 ---> Running in 77cf33caec1a
ocaml-base-compiler is now pinned to version 5.5.0

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 77cf33caec1a
 ---> 00e0c13a4ef2
Step 5/7 : ENTRYPOINT [ "opam", "exec", "--" ]
 ---> Running in d1c7a2a6a501
 ---> Removed intermediate container d1c7a2a6a501
 ---> 590d0548359a
Step 6/7 : CMD [ "cmd.exe" ]
 ---> Running in 12289994992c
 ---> Removed intermediate container 12289994992c
 ---> facda42ae96b
Step 7/7 : COPY [ "Dockerfile", "/Dockerfile.ocaml" ]
 ---> 02e9a53b28d1
Successfully built 02e9a53b28d1
Pushing "sha256:02e9a53b28d1f1ec070d166eb61f77f7edc5436b241d3569c8e248875c6b915f" to "ocurrent/opam-staging:windows-server-msvc-ltsc2025-ocaml-5.5-amd64" as user "ocurrentbuilder"
Login Succeeded
The push refers to repository [docker.io/ocurrent/opam-staging]
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windows-server-msvc-ltsc2025-ocaml-5.5-amd64: digest: sha256:71a0095a9c097e1d2d5f2b26f9d304f23a497e958842bdb5e9236a2b0ebb1ed3 size: 12316
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windows-server-msvc-ltsc2025-ocaml-5.5-amd64: digest: sha256:71a0095a9c097e1d2d5f2b26f9d304f23a497e958842bdb5e9236a2b0ebb1ed3 size: 12316
Job succeeded
2026-08-26 11:22.56: Job succeeded