CI: FAILURE heartwood

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  "version": "0.14.0@c37ec71",
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    "nanos_since_epoch": 794312052
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{
  "type": "runnable_plan",
  "steps": [
    {
      "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"
    },
    {
      "action": "tar_extract",
      "archive": "/dev/vde",
      "directory": "/ci/cache"
    },
    {
      "action": "shell",
      "shell": "ln -sf /ci /workspace"
    },
    {
      "action": "shell",
      "shell": "git config --global user.name 'Ambient CI'"
    },
    {
      "action": "shell",
      "shell": "git config --global user.email ambient@example.com"
    },
    {
      "action": "cargo_fmt"
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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",
  "source_drive": "/dev/vdc",
  "artifact_drive": "/dev/vdd",
  "cache_drive": "/dev/vde",
  "deps_drive": "/dev/vdf",
  "workspace_dir": "/ci",
  "source_dir": "/ci/src",
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  "log_source": "Plan"
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{
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  },
  "log_source": "Plan"
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{
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{
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  "log_source": "Plan"
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{
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{
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    "nanos_since_epoch": 235488185
  },
  "log_source": "Plan"
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{
  "type": "execute_action",
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  "timestamp": {
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    "nanos_since_epoch": 235523093
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  "log_source": "Plan"
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{
  "type": "program_succeeded",
  "exit_code": 0,
  "stdout": "",
  "stderr": "+ ln -sf /ci /workspace\n",
  "timestamp": {
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    "nanos_since_epoch": 247783654
  },
  "log_source": "Plan"
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{
  "type": "action_succeeded",
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    "nanos_since_epoch": 247807302
  },
  "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": 247812589
  },
  "log_source": "Plan"
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{
  "type": "program_succeeded",
  "exit_code": 0,
  "stdout": "",
  "stderr": "+ git config --global user.name 'Ambient CI'\n",
  "timestamp": {
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    "nanos_since_epoch": 265035828
  },
  "log_source": "Plan"
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{
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{
  "type": "execute_action",
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{
  "type": "program_succeeded",
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  "stderr": "+ git config --global user.email ambient@example.com\n",
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{
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  "stderr": "info: syncing channel updates for 1.95-x86_64-unknown-linux-gnu\nerror: could not download file from 'https://static.rust-lang.org/dist/channel-rust-1.95.toml.sha256' to '/root/.rustup/tmp/7z8lgl_88wtl6ica_file': error downloading file: error sending request for url (https://static.rust-lang.org/dist/channel-rust-1.95.toml.sha256): client error (Connect): dns error: failed to lookup address information: Temporary failure in name resolution\n",
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{
  "type": "executor_ends_in_failure",
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