2026-06-06 07:22.46: New job: Build using linux-s390x in
                                []
2026-06-06 07:22.46: Will push staging image to ocurrent/opam-staging:ubuntu-22.04-ocaml-5.5-beta1-s390x

Dockerfile:

# syntax=docker/dockerfile:1

FROM ocurrent/opam-staging@sha256:b8697a6050ba92a462deb349d87356871ee8f6d68f6eeeec6bbc23c5dd09c3ba
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" ]


2026-06-06 07:22.46: Using cache hint "5.5.0~beta1-s390x-ocurrent/opam-staging@sha256:b8697a6050ba92a462deb349d87356871ee8f6d68f6eeeec6bbc23c5dd09c3ba"
2026-06-06 14:18.11: Waiting for worker…
2026-06-06 14:18.11: 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: 769B done
#1 DONE 0.1s

#2 resolve image config for docker-image://docker.io/docker/dockerfile:1
#2 DONE 0.2s

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

#4 [internal] load metadata for docker.io/ocurrent/opam-staging@sha256:b8697a6050ba92a462deb349d87356871ee8f6d68f6eeeec6bbc23c5dd09c3ba
#4 DONE 0.0s

#5 [internal] load .dockerignore
#5 transferring context:
#5 transferring context: 2B done
#5 DONE 0.2s

#6 [1/8] FROM docker.io/ocurrent/opam-staging@sha256:b8697a6050ba92a462deb349d87356871ee8f6d68f6eeeec6bbc23c5dd09c3ba
#6 CACHED

#7 [2/9] RUN opam repo add beta git+https://github.com/ocaml/ocaml-beta-repository --set-default
#7 0.904 [beta] Initialised
#7 DONE 1.5s

#8 [3/9] RUN apt-get -y update
#8 0.715 Hit:1 http://ports.ubuntu.com/ubuntu-ports jammy InRelease
#8 0.823 Get:2 http://ports.ubuntu.com/ubuntu-ports jammy-updates InRelease [128 kB]
#8 1.274 Hit:3 http://ports.ubuntu.com/ubuntu-ports jammy-backports InRelease
#8 1.389 Hit:4 http://ports.ubuntu.com/ubuntu-ports jammy-security InRelease
#8 1.436 Fetched 128 kB in 1s (130 kB/s)
#8 1.436 Reading package lists...
#8 DONE 2.2s

#9 [4/9] RUN DEBIAN_FRONTEND=noninteractive apt-get -y upgrade
#9 0.498 Reading package lists...
#9 1.126 Building dependency tree...
#9 1.203 Reading state information...
#9 1.224 Calculating upgrade...
#9 1.347 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
#9 DONE 1.5s

#10 [5/9] RUN DEBIAN_FRONTEND=noninteractive apt-get -y install libzstd-dev
#10 0.505 Reading package lists...
#10 1.117 Building dependency tree...
#10 1.189 Reading state information...
#10 1.314 The following NEW packages will be installed:
#10 1.314   libzstd-dev
#10 1.468 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
#10 1.468 Need to get 406 kB of archives.
#10 1.468 After this operation, 1521 kB of additional disk space will be used.
#10 1.468 Get:1 http://ports.ubuntu.com/ubuntu-ports jammy/main s390x libzstd-dev s390x 1.4.8+dfsg-3build1 [406 kB]
#10 1.727 debconf: delaying package configuration, since apt-utils is not installed
#10 1.767 Fetched 406 kB in 0s (2263 kB/s)
#10 1.793 Selecting previously unselected package libzstd-dev:s390x.
#10 1.793 (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 ... 15422 files and directories currently installed.)
#10 1.914 Preparing to unpack .../libzstd-dev_1.4.8+dfsg-3build1_s390x.deb ...
#10 1.914 Unpacking libzstd-dev:s390x (1.4.8+dfsg-3build1) ...
#10 1.941 Setting up libzstd-dev:s390x (1.4.8+dfsg-3build1) ...
#10 DONE 2.1s

#11 [internal] load build context
#11 transferring context: 769B done
#11 DONE 0.1s

#12 [6/9] RUN opam switch create 5.5~beta1 --packages=ocaml-base-compiler.5.5.0~beta1
#12 0.614 
#12 0.614 <><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><><><>
#12 0.614 Switch invariant: ["ocaml-base-compiler" {= "5.5.0~beta1"}]
#12 5.871 
#12 5.871 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#12 6.887 -> installed base-bigarray.base
#12 6.888 -> installed base-threads.base
#12 6.889 -> installed base-unix.base
#12 6.903 -> installed compiler-cloning.enabled
#12 6.904 -> installed ocaml-options-vanilla.1
#12 6.911 -> retrieved ocaml.5.5.0  (https://opam.ocaml.org/cache)
#12 7.244 -> retrieved ocaml-compiler.5.5.0~beta1  (https://opam.ocaml.org/cache)
#12 197.5 -> installed ocaml-compiler.5.5.0~beta1
#12 197.5 -> installed ocaml-base-compiler.5.5.0~beta1
#12 197.6 -> installed ocaml.5.5.0
#12 197.6 -> installed base-domains.base
#12 197.6 -> installed base-effects.base
#12 197.6 -> installed base-nnp.base
#12 197.8 Done.
#12 197.8 
#12 197.8 <><> ocaml-compiler.5.5.0~beta1 installed successfully ><><><><><><><><><><><><>
#12 197.8 => This switch had to be compiled from sources, but future switches with the 🐌
#12 197.8    same compiler version and configuration should assemble instantly.
#12 197.8 # Run eval $(opam env --switch=5.5~beta1) to update the current shell environment
#12 DONE 202.1s

#13 [7/9] RUN opam pin add -k version ocaml-base-compiler 5.5.0~beta1
#13 0.646 ocaml-base-compiler is now pinned to version 5.5.0~beta1
#13 0.646 
#13 5.893 Already up-to-date.
#13 5.893 Nothing to do.
#13 5.893 # Run eval $(opam env) to update the current shell environment
#13 DONE 6.0s

#14 [8/9] RUN opam install -y opam-depext
#14 6.083 The following actions will be performed:
#14 6.083   - install opam-depext 1.2.3
#14 6.083 
#14 6.083 <><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>
#14 6.734 -> retrieved opam-depext.1.2.3  (https://opam.ocaml.org/cache)
#14 9.058 -> installed opam-depext.1.2.3
#14 9.065 Done.
#14 9.076 
#14 9.076 <><> opam-depext.1.2.3 installed successfully <><><><><><><><><><><><><><><><><>
#14 9.076 => opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead
#14 9.076 # Run eval $(opam env) to update the current shell environment
#14 DONE 10.0s

#15 [9/9] COPY --link [ Dockerfile, /Dockerfile.ocaml ]
#15 DONE 0.2s

#16 exporting to image
#16 exporting layers
#16 exporting layers 0.9s done
#16 writing image sha256:fb2963e4b58e42db5c8cee9d64398e122622e9961105482d59ba8eae0ffaee7f done
#16 DONE 0.9s

 1 warning found (use docker --debug to expand):
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 15)
Pushing "sha256:fb2963e4b58e42db5c8cee9d64398e122622e9961105482d59ba8eae0ffaee7f" to "ocurrent/opam-staging:ubuntu-22.04-ocaml-5.5-beta1-s390x" as user "ocurrentbuilder"
Login Succeeded
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Job succeeded
2026-06-06 14:22.23: Job succeeded