gitlab-ci: A few clarifying comments

19 jobs for master in 27 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Lint
failed #94909
lint
lint-submods

00:00:16

 
  Build
skipped #94911
x86_64-linux
hadrian-ghc-in-ghci
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x86_64-linux allowed to fail
release-x86_64-linux-deb9-dwarf
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x86_64-linux
validate-x86_64-linux-deb9-debug
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x86_64-linux allowed to fail
validate-x86_64-linux-deb9-hadrian
 
  Full Build
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aarch64-linux allowed to fail
validate-aarch64-linux-deb9
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x86_64-linux
validate-i386-linux-deb9
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x86_64-darwin
validate-x86_64-darwin
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x86_64-linux
validate-x86_64-linux-deb9
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x86_64-linux
validate-x86_64-linux-deb9-integer-simple
skipped #94918
x86_64-linux
validate-x86_64-linux-deb9-llvm
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x86_64-linux
validate-x86_64-linux-deb9-unreg
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x86_64-linux
validate-x86_64-linux-fedora27
skipped #94923
x86_64-windows allowed to fail
validate-x86_64-windows
skipped #94922
x86_64-windows allowed to fail
validate-x86_64-windows-hadrian
 
  Cleanup
passed #94924
x86_64-darwin
cleanup-darwin

00:00:11

 
  Packaging
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x86_64-linux allowed to fail
doc-tarball
 
  Hackage
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x86_64-linux allowed to fail manual
hackage
 
  Deploy
skipped #94927
x86_64-linux allowed to fail
pages
 
Name Stage Failure
failed
lint-submods Lint
Synchronizing submodule url for 'nofib'
Synchronizing submodule url for 'utils/haddock'
Synchronizing submodule url for 'utils/hsc2hs'
$ git submodule update --init --recursive
$ git checkout .gitmodules
$ git fetch https://gitlab.haskell.org/ghc/ghc-performance-notes.git refs/notes/perf:refs/notes/perf || true
$ git fetch --unshallow "$CI_MERGE_REQUEST_PROJECT_URL" $CI_MERGE_REQUEST_TARGET_BRANCH_NAME
fatal: --unshallow on a complete repository does not make sense
ERROR: Job failed: exit code 1