2026-07-11 07:55.12: New job: Build using linux-s390x in
                                []
2026-07-11 07:55.12: Will push staging image to ocurrent/opam-staging:debian-12-ocaml-5.5-s390x

Dockerfile:

# syntax=docker/dockerfile:1

FROM ocurrent/opam-staging@sha256:724484db4ef9bdd8e48beaca0da48cca300d5095332c74e4ccca93109fe12596
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 --packages=ocaml-base-compiler.5.5.0
RUN opam pin add -k version ocaml-base-compiler 5.5.0
RUN opam install -y opam-depext
ENTRYPOINT [ "opam", "exec", "--" ]
CMD bash
COPY --link [ "Dockerfile", "/Dockerfile.ocaml" ]


2026-07-11 07:55.12: Using cache hint "5.5.0-s390x-ocurrent/opam-staging@sha256:724484db4ef9bdd8e48beaca0da48cca300d5095332c74e4ccca93109fe12596"
2026-07-11 07:55.12: Waiting for resource in pool OCluster
2026-07-11 09:22.45: Waiting for worker…
2026-07-11 09:26.49: Got resource from pool OCluster
Building on s390x-worker-01.marist.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: 663B done
#1 DONE 0.1s

#2 resolve image config for docker-image://docker.io/docker/dockerfile:1
#2 DONE 0.1s

#3 docker-image://docker.io/docker/dockerfile:1@sha256:87999aa3d42bdc6bea60565083ee17e86d1f3339802f543c0d03998580f9cb89
#3 CACHED

#4 [internal] load metadata for docker.io/ocurrent/opam-staging@sha256:724484db4ef9bdd8e48beaca0da48cca300d5095332c74e4ccca93109fe12596
#4 DONE 0.0s

#5 [internal] load .dockerignore
#5 transferring context: 2B done
#5 DONE 0.1s

#6 [1/5] FROM docker.io/ocurrent/opam-staging@sha256:724484db4ef9bdd8e48beaca0da48cca300d5095332c74e4ccca93109fe12596
#6 resolve docker.io/ocurrent/opam-staging@sha256:724484db4ef9bdd8e48beaca0da48cca300d5095332c74e4ccca93109fe12596 0.4s done
#6 DONE 2.8s

#7 [2/8] RUN apt-get -y update
#7 0.382 Hit:1 http://deb.debian.org/debian bookworm InRelease
#7 0.396 Hit:2 http://deb.debian.org/debian bookworm-updates InRelease
#7 0.416 Hit:3 http://deb.debian.org/debian-security bookworm-security InRelease
#7 0.670 Reading package lists...
#7 DONE 1.1s

#8 [3/8] RUN DEBIAN_FRONTEND=noninteractive apt-get -y upgrade
#8 0.366 Reading package lists...
#8 0.854 Building dependency tree...
#8 0.957 Reading state information...
#8 0.987 Calculating upgrade...
#8 1.098 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
#8 DONE 1.4s

#9 [4/8] RUN DEBIAN_FRONTEND=noninteractive apt-get -y install libzstd-dev
#9 0.515 Reading package lists...
#9 1.009 Building dependency tree...
#9 1.070 Reading state information...
#9 1.198 The following NEW packages will be installed:
#9 1.215   libzstd-dev
#9 1.345 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
#9 1.345 Need to get 315 kB of archives.
#9 1.345 After this operation, 1299 kB of additional disk space will be used.
#9 1.345 Get:1 http://deb.debian.org/debian bookworm/main s390x libzstd-dev s390x 1.5.4+dfsg2-5 [315 kB]
#9 1.571 debconf: delaying package configuration, since apt-utils is not installed
#9 1.604 Fetched 315 kB in 0s (2504 kB/s)
#9 1.656 Selecting previously unselected package libzstd-dev:s390x.
#9 1.656 (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 ... 18528 files and directories currently installed.)
#9 2.117 Preparing to unpack .../libzstd-dev_1.5.4+dfsg2-5_s390x.deb ...
#9 2.123 Unpacking libzstd-dev:s390x (1.5.4+dfsg2-5) ...
#9 2.198 Setting up libzstd-dev:s390x (1.5.4+dfsg2-5) ...
#9 DONE 6.4s

#10 [internal] load build context
#10 transferring context: 663B 0.1s done
#10 DONE 0.2s

#11 [5/8] RUN opam switch create 5.5 --packages=ocaml-base-compiler.5.5.0
#11 0.891 
#11 0.891 <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
#11 0.891 Switch invariant: ["ocaml-base-compiler" {= "5.5.0"}]
#11 6.270 
#11 6.270 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#11 8.656 -> installed base-bigarray.base
#11 8.666 -> installed base-threads.base
#11 8.668 -> installed base-unix.base
#11 8.671 -> installed compiler-cloning.enabled
#11 8.674 -> installed ocaml-options-vanilla.1
#11 8.688 -> retrieved ocaml.5.5.0  (https://opam.ocaml.org/cache)
#11 8.985 -> retrieved ocaml-compiler.5.5.0  (https://opam.ocaml.org/cache)
#11 204.5 -> installed ocaml-compiler.5.5.0
#11 204.5 -> installed ocaml-base-compiler.5.5.0
#11 204.6 -> installed ocaml.5.5.0
#11 204.6 -> installed base-domains.base
#11 204.6 -> installed base-effects.base
#11 204.6 -> installed base-nnp.base
#11 204.8 Done.
#11 204.8 
#11 204.8 <><> ocaml-compiler.5.5.0 installed successfully ><><><><><><><><><><><><><><><>
#11 204.8 => This switch had to be compiled from sources, but future switches with the 🐌
#11 204.8    same compiler version and configuration should assemble instantly.
#11 204.8 # Run eval $(opam env --switch=5.5) to update the current shell environment
#11 DONE 209.6s

#12 [6/8] RUN opam pin add -k version ocaml-base-compiler 5.5.0
#12 0.628 ocaml-base-compiler is now pinned to version 5.5.0
#12 0.629 
#12 5.935 Already up-to-date.
#12 5.935 Nothing to do.
#12 5.936 # Run eval $(opam env) to update the current shell environment
#12 DONE 6.2s

#13 [7/8] RUN opam install -y opam-depext
#13 6.356 The following actions will be performed:
#13 6.356   - install opam-depext 1.2.3
#13 6.356 
#13 6.356 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#13 6.853 -> retrieved opam-depext.1.2.3  (https://opam.ocaml.org/cache)
#13 10.79 -> installed opam-depext.1.2.3
#13 10.79 Done.
#13 10.79 
#13 10.79 <><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
#13 10.79 => opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
#13 10.80 # Run eval $(opam env) to update the current shell environment
#13 DONE 12.3s

#14 [8/8] COPY --link [ Dockerfile, /Dockerfile.ocaml ]
#14 DONE 0.2s

#15 exporting to image
#15 exporting layers
#15 exporting layers 0.8s done
#15 writing image sha256:ddcd4dc5274675e995e70b79fd1a7dd6012ecef5c4273ebba7849fb143b6616e done
#15 DONE 0.8s

 1 warning found (use docker --debug to expand):
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 14)
Pushing "sha256:ddcd4dc5274675e995e70b79fd1a7dd6012ecef5c4273ebba7849fb143b6616e" to "ocurrent/opam-staging:debian-12-ocaml-5.5-s390x" as user "ocurrentbuilder"
Login Succeeded
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debian-12-ocaml-5.5-s390x: digest: sha256:61ad0ac88810fdc0797382ca116b3c9a41425c4b43740ec4f97a607709afe824 size: 10121
Job succeeded
2026-07-11 09:31.08: Job succeeded