CI: FAILURE heartwood

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      "action": "mkdir",
      "pathname": "/ci"
    },
    {
      "action": "mkdir",
      "pathname": "/ci/artifacts"
    },
    {
      "action": "tar_extract",
      "archive": "/dev/vdc",
      "directory": "/ci/src"
    },
    {
      "action": "tar_extract",
      "archive": "/dev/vdf",
      "directory": "/ci/deps"
    },
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      "action": "shell",
      "shell": "# Because of a (temporary) limitation in Ambient, we need to set\n# these variables manually. Once Ambient manages environment\n# variables better, these can be deleted.\nexport CARGO_TARGET_DIR=/workspace/cache\nexport CARGO_HOME=/workspace/deps\nexport HOME=/root\nexport PATH=\"/root/.cargo/bin:$PATH\"\nexport RUSTDOCFLAGS='-D warnings'\n\ncargo doc --workspace --no-deps --all-features\n"
    },
    {
      "action": "shell",
      "shell": "# Because of a (temporary) limitation in Ambient, we need to set\n# these variables manually. Once Ambient manages environment\n# variables better, these can be deleted.\nexport CARGO_TARGET_DIR=/workspace/cache\nexport CARGO_HOME=/workspace/deps\nexport HOME=/root\nexport PATH=\"/root/.cargo/bin:$PATH\"\n\n# These are based on debian/control.\nexport DEBEMAIL=liw@liw.fi\nexport DEBFULLNAME=\"Lars Wirzenius\"\n\n# Clean up after tests and documentation building. The Debian\n# package building tools do not want changes outside the\n# `debian` directory, compared to what is committed to Git, from\n# which the \"upstream tarball\" is created.\ngit reset --hard\ngit clean -fdx\ngit status --ignored\n\n# Update debian/changelog with a new version so that every run\n# creates a newer version. This avoids us having to update the\n# file manually for every CI run.\nV=\"$(dpkg-parsechangelog -SVersion | sed 's/-[^-]*$//')\"\nT=\"$(date -u \"+%Y%m%dT%H%M%S\")\"\nversion=\"$V.ci$T-1\"\ndch -v \"$version\" \"CI build under Ambient.\"\ndch -r ''\n"
    },
    {
      "action": "deb",
      "packages": "."
    },
    {
      "action": "tar_create",
      "archive": "/dev/vde",
      "directory": "/ci/cache"
    },
    {
      "action": "tar_create",
      "archive": "/dev/vdd",
      "directory": "/ci/artifacts"
    }
  ],
  "executor_drive": "/dev/vdb",
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  "artifact_drive": "/dev/vdd",
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  "workspace_dir": "/ci",
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{
  "type": "program_succeeded",
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  "stdout": "",
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  "log_source": "Plan"
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{
  "type": "execute_action",
  "action": "shell",
  "shell": "git config --global user.name 'Ambient CI'",
  "timestamp": {
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    "nanos_since_epoch": 91245220
  },
  "log_source": "Plan"
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{
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  "exit_code": 0,
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    "nanos_since_epoch": 103872743
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  "log_source": "Plan"
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{
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{
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