2026-05-17 20:23.31: New job: Build using linux-x86_64 in
                                []
2026-05-17 20:23.31: Will push staging image to ocurrent/opam-staging:fedora-44-ocaml-5.5-beta1-amd64

Dockerfile:

# syntax=docker/dockerfile:1

FROM ocurrent/opam-staging@sha256:5c8e574f70e9a39db8fb5b9dfdb80373297b073d479ca19c19f3af04641b7564
RUN opam repo add beta git+https://github.com/ocaml/ocaml-beta-repository --set-default
ENV OPAMYES="1" OPAMCONFIRMLEVEL="unsafe-yes" OPAMERRLOGLEN="0" OPAMPRECISETRACKING="1"
USER root
RUN yum install -y zstd && yum clean packages
USER opam
RUN opam switch create 5.5~beta1 --packages=ocaml-base-compiler.5.5.0~beta1
RUN opam pin add -k version ocaml-base-compiler 5.5.0~beta1
RUN opam install -y opam-depext
ENTRYPOINT [ "opam", "exec", "--" ]
CMD bash
COPY --link [ "Dockerfile", "/Dockerfile.ocaml" ]


2026-05-17 20:23.31: Using cache hint "5.5.0~beta1-amd64-ocurrent/opam-staging@sha256:5c8e574f70e9a39db8fb5b9dfdb80373297b073d479ca19c19f3af04641b7564"
2026-05-17 20:42.52: Waiting for worker…
2026-05-17 20:42.52: Got resource from pool OCluster
Building on bremusa.ocamllabs.io
WARNING: experimental flag squash is removed with BuildKit. You should squash inside build using a multi-stage Dockerfile for efficiency.
#0 building with "default" instance using docker driver

#1 [internal] load build definition from Dockerfile
#1 transferring dockerfile: 673B done
#1 DONE 0.0s

#2 resolve image config for docker-image://docker.io/docker/dockerfile:1
#2 DONE 0.6s

#3 docker-image://docker.io/docker/dockerfile:1@sha256:2780b5c3bab67f1f76c781860de469442999ed1a0d7992a5efdf2cffc0e3d769
#3 CACHED

#4 [internal] load metadata for docker.io/ocurrent/opam-staging@sha256:5c8e574f70e9a39db8fb5b9dfdb80373297b073d479ca19c19f3af04641b7564
#4 DONE 0.0s

#5 [internal] load .dockerignore
#5 transferring context: 2B done
#5 DONE 0.0s

#6 [internal] load build context
#6 transferring context: 673B done
#6 DONE 0.0s

#7 [1/7] FROM docker.io/ocurrent/opam-staging@sha256:5c8e574f70e9a39db8fb5b9dfdb80373297b073d479ca19c19f3af04641b7564
#7 resolve docker.io/ocurrent/opam-staging@sha256:5c8e574f70e9a39db8fb5b9dfdb80373297b073d479ca19c19f3af04641b7564
#7 resolve docker.io/ocurrent/opam-staging@sha256:5c8e574f70e9a39db8fb5b9dfdb80373297b073d479ca19c19f3af04641b7564 0.8s done
#7 DONE 1.1s

#8 [2/7] RUN opam repo add beta git+https://github.com/ocaml/ocaml-beta-repository --set-default
#8 0.954 [beta] Initialised
#8 DONE 1.5s

#9 [3/7] RUN yum install -y zstd && yum clean packages
#9 0.385 Updating and loading repositories:
#9 1.079 Repositories loaded.
#9 1.314 Package "zstd-1.5.7-5.fc44.x86_64" is already installed.
#9 1.314 
#9 1.315 Nothing to do.
#9 1.391 Removed 0 files, 0 directories (total of 0 B). 0 errors occurred.
#9 DONE 1.4s

#10 [4/7] RUN opam switch create 5.5~beta1 --packages=ocaml-base-compiler.5.5.0~beta1
#10 0.731 
#10 0.731 <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
#10 0.731 Switch invariant: ["ocaml-base-compiler" {= "5.5.0~beta1"}]
#10 5.795 
#10 5.795 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#10 8.629 -> installed base-bigarray.base
#10 8.630 -> installed base-threads.base
#10 8.631 -> installed base-unix.base
#10 8.634 -> installed compiler-cloning.enabled
#10 8.635 -> installed ocaml-options-vanilla.1
#10 8.645 -> retrieved ocaml.5.5.0  (https://opam.ocaml.org/cache)
#10 9.402 -> retrieved ocaml-compiler.5.5.0~beta1  (https://opam.ocaml.org/cache)
#10 141.3 -> installed ocaml-compiler.5.5.0~beta1
#10 141.3 -> installed ocaml-base-compiler.5.5.0~beta1
#10 141.4 -> installed ocaml.5.5.0
#10 141.4 -> installed base-domains.base
#10 141.4 -> installed base-effects.base
#10 141.4 -> installed base-nnp.base
#10 141.8 Done.
#10 141.8 
#10 141.8 <><> ocaml-compiler.5.5.0~beta1 installed successfully ><><><><><><><><><><><><>
#10 141.8 => This switch had to be compiled from sources, but future switches with the 🐌
#10 141.8    same compiler version and configuration should assemble instantly.
#10 141.8 # Run eval $(opam env --switch=5.5~beta1) to update the current shell environment
#10 DONE 143.3s

#11 [5/7] RUN opam pin add -k version ocaml-base-compiler 5.5.0~beta1
#11 0.683 ocaml-base-compiler is now pinned to version 5.5.0~beta1
#11 0.683 
#11 5.950 Already up-to-date.
#11 5.950 Nothing to do.
#11 5.950 # Run eval $(opam env) to update the current shell environment
#11 DONE 6.0s

#12 [6/7] RUN opam install -y opam-depext
#12 6.565 The following actions will be performed:
#12 6.565   - install opam-depext 1.2.3
#12 6.565 
#12 6.565 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#12 6.811 -> retrieved opam-depext.1.2.3  (https://opam.ocaml.org/cache)
#12 10.91 -> installed opam-depext.1.2.3
#12 10.92 Done.
#12 10.92 
#12 10.92 <><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
#12 10.92 => opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
#12 10.92 # Run eval $(opam env) to update the current shell environment
#12 DONE 12.5s

#13 [7/7] COPY --link [ Dockerfile, /Dockerfile.ocaml ]
#13 DONE 0.0s

#14 exporting to image
#14 exporting layers
#14 exporting layers 5.6s done
#14 writing image sha256:75198185e89c9528f78866eae218e39a56760335e19eeb582be4be75a39624b8 done
#14 DONE 5.6s

 1 warning found (use docker --debug to expand):
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 13)
Pushing "sha256:75198185e89c9528f78866eae218e39a56760335e19eeb582be4be75a39624b8" to "ocurrent/opam-staging:fedora-44-ocaml-5.5-beta1-amd64" as user "ocurrentbuilder"
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Job succeeded
2026-05-17 20:46.58: Job succeeded