Error when running Cargo test documentation overall workspace with bin crate

[loganmzz]

Description

cargo test --all --doc doesn't work if workspace contains a binary crate (including root).

Examples

cargo new --bin root
cd root
cargo new --lib foo
cargo new --lib bar
echo >> Cargo.toml <<EOF
[workspace]
members = ["foo", "bar"]
EOF

cargo test --all --doc #ERROR

echo '' > src/lib.rs
cargo test --all --doc #OK

cargo new --lib root
cd root
cargo new --lib foo
cargo new --bin bar
echo >> Cargo.toml <<EOF
[workspace]
members = ["foo", "bar"]
EOF

cargo test --all --doc #ERROR

echo '' > bar/src/lib.rs
cargo test --all --doc #OK

Workaround

Supposing flat workspace:

rc=0
for lib in {.,*}/src/lib.rs; do
  pushd "${lib%/src/lib.rs}"
  cargo test --doc || rc=$?
  popd
done
exit $rc

[stale]

As there hasn't been any activity here in over 6 months I've marked this as stale and if no further activity happens for 7 days I will close it.

I'm a bot so this may be in error! If this issue should remain open, could someone (the author, a team member, or any interested party) please comment to that effect?

The team would be especially grateful if such a comment included details such as:

• Is this still relevant?
• If so, what is blocking it?
• Is it known what could be done to help move this forward?

Thank you for contributing!

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[ehuss]

This has been fixed by #5873.