2026-04-26 12:41.55: New job: Build using linux-x86_64 in
                                []
2026-04-26 12:41.55: Will push staging image to ocurrent/opam-staging:ubuntu-25.04-ocaml-5.5-beta1-amd64

Dockerfile:

# syntax=docker/dockerfile:1

FROM ocurrent/opam-staging@sha256:12d748f685c4c3707f43583c64e85c141320021d3ac56ca3d33eb2552a586fb4
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 apt-get -y update
RUN DEBIAN_FRONTEND=noninteractive apt-get -y upgrade
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install libzstd-dev
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" ]


2026-04-26 12:41.55: Using cache hint "5.5.0~beta1-amd64-ocurrent/opam-staging@sha256:12d748f685c4c3707f43583c64e85c141320021d3ac56ca3d33eb2552a586fb4"
2026-04-26 12:41.55: Waiting for resource in pool OCluster
2026-04-26 12:41.55: Waiting for worker…
2026-04-26 12:41.55: Got resource from pool OCluster
Building on laodoke.caelum.ci.dev
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: 769B 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@sha256:12d748f685c4c3707f43583c64e85c141320021d3ac56ca3d33eb2552a586fb4
#4 DONE 0.5s

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

#6 [1/9] FROM docker.io/ocurrent/opam-staging@sha256:12d748f685c4c3707f43583c64e85c141320021d3ac56ca3d33eb2552a586fb4
#6 CACHED

#7 [internal] load build context
#7 transferring context: 769B done
#7 DONE 0.0s

#8 [2/9] RUN opam repo add beta git+https://github.com/ocaml/ocaml-beta-repository --set-default
#8 1.002 [beta] Initialised
#8 DONE 1.2s

#9 [3/9] RUN apt-get -y update
#9 0.364 Hit:1 http://security.ubuntu.com/ubuntu plucky-security InRelease
#9 0.443 Hit:2 http://archive.ubuntu.com/ubuntu plucky InRelease
#9 0.525 Hit:3 http://archive.ubuntu.com/ubuntu plucky-updates InRelease
#9 0.608 Hit:4 http://archive.ubuntu.com/ubuntu plucky-backports InRelease
#9 0.636 Reading package lists...
#9 DONE 1.6s

#10 [4/9] RUN DEBIAN_FRONTEND=noninteractive apt-get -y upgrade
#10 0.270 Reading package lists...
#10 1.045 Building dependency tree...
#10 1.181 Reading state information...
#10 1.231 Calculating upgrade...
#10 1.437 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
#10 DONE 1.5s

#11 [5/9] RUN DEBIAN_FRONTEND=noninteractive apt-get -y install libzstd-dev
#11 0.257 Reading package lists...
#11 1.040 Building dependency tree...
#11 1.178 Reading state information...
#11 1.401 The following NEW packages will be installed:
#11 1.401   libzstd-dev
#11 1.491 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
#11 1.491 Need to get 444 kB of archives.
#11 1.491 After this operation, 1537 kB of additional disk space will be used.
#11 1.491 Get:1 http://archive.ubuntu.com/ubuntu plucky/main amd64 libzstd-dev amd64 1.5.6+dfsg-2 [444 kB]
#11 2.573 Fetched 444 kB in 0s (1792 kB/s)
#11 2.594 Selecting previously unselected package libzstd-dev:amd64.
#11 2.594 (Reading database ... 
(Reading database ... 5%
(Reading database ... 10%
(Reading database ... 15%
(Reading database ... 20%
(Reading database ... 25%
(Reading database ... 30%
(Reading database ... 35%
(Reading database ... 40%
(Reading database ... 45%
(Reading database ... 50%
(Reading database ... 55%
(Reading database ... 60%
(Reading database ... 65%
(Reading database ... 70%
(Reading database ... 75%
(Reading database ... 80%
(Reading database ... 85%
(Reading database ... 90%
(Reading database ... 95%
(Reading database ... 100%
(Reading database ... 16503 files and directories currently installed.)
#11 2.605 Preparing to unpack .../libzstd-dev_1.5.6+dfsg-2_amd64.deb ...
#11 2.606 Unpacking libzstd-dev:amd64 (1.5.6+dfsg-2) ...
#11 2.658 Setting up libzstd-dev:amd64 (1.5.6+dfsg-2) ...
#11 DONE 2.7s

#12 [6/9] RUN opam switch create 5.5~beta1 --packages=ocaml-base-compiler.5.5.0~beta1
#12 3.233 
#12 3.233 <><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#12 3.322 [ocaml.5.5.0/gen_ocaml_config.ml] downloaded from https://opam.ocaml.org/cache
#12 3.701 [ocaml-compiler.5.5.0~beta1] downloaded from cache at https://opam.ocaml.org/cache
#12 4.047 
#12 4.047 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#12 4.050 -> installed base-bigarray.base
#12 4.052 -> installed base-threads.base
#12 4.055 -> installed base-unix.base
#12 4.057 -> installed compiler-cloning.enabled
#12 4.081 -> installed ocaml-beta.enabled
#12 4.226 -> installed ocaml-options-vanilla.1
#12 120.6 -> installed ocaml-compiler.5.5.0~beta1
#12 120.6 -> installed ocaml-base-compiler.5.5.0~beta1
#12 120.8 -> installed ocaml.5.5.0
#12 120.8 -> installed base-domains.base
#12 120.8 -> installed base-effects.base
#12 120.9 -> installed base-nnp.base
#12 121.2 Done.
#12 121.2 
#12 121.2 <><> ocaml-compiler.5.5.0~beta1 installed successfully ><><><><><><><><><><><><>
#12 121.2 => This switch had to be compiled from sources, but future switches with the 🐌
#12 121.2    same compiler version and configuration should assemble instantly.
#12 121.2 # Run eval $(opam env) to update the current shell environment
#12 DONE 122.4s

#13 [7/9] RUN opam pin add -k version ocaml-base-compiler 5.5.0~beta1
#13 0.606 ocaml-base-compiler is now pinned to version 5.5.0~beta1
#13 0.606 
#13 3.240 Already up-to-date.
#13 3.240 Nothing to do.
#13 3.240 # Run eval $(opam env) to update the current shell environment
#13 DONE 3.3s

#14 [8/9] RUN opam install -y opam-depext
#14 3.546 The following actions will be performed:
#14 3.546   - install opam-depext 1.2.3
#14 3.546 
#14 3.546 <><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#14 3.637 [opam-depext.1.2.3] downloaded from cache at https://opam.ocaml.org/cache
#14 3.660 
#14 3.660 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#14 5.128 -> installed opam-depext.1.2.3
#14 5.135 Done.
#14 5.135 # Run eval $(opam env) to update the current shell environment
#14 DONE 5.2s

#15 [9/9] COPY --link [ Dockerfile, /Dockerfile.ocaml ]
#15 DONE 0.0s

#16 exporting to image
#16 exporting layers
#16 exporting layers 4.9s done
#16 writing image sha256:e4f85a0a07e0ad4ec5165c2de11a947190a51a0550ecddd64ba4fd63d0c12ccb done
#16 DONE 4.9s

 1 warning found (use --debug to expand):
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 15)
Pushing "sha256:e4f85a0a07e0ad4ec5165c2de11a947190a51a0550ecddd64ba4fd63d0c12ccb" to "ocurrent/opam-staging:ubuntu-25.04-ocaml-5.5-beta1-amd64" as user "ocurrentbuilder"
Login Succeeded
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ubuntu-25.04-ocaml-5.5-beta1-amd64: digest: sha256:9a437c3fd7a0928ce37b9da62f528ad115bbfe4f0ec736c38c9dd9c1ba962476 size: 10550
Job succeeded
2026-04-26 12:45.40: Job succeeded