cargo test --package uucore --all-features float fails

[drinkcat]

Was trying to rerun tests for the uucore package with:
cargo test --package uucore --all-features float
(not 100% sure if this is the right way to run uucore tests, but that's what I've been doing)

And they now started to fail:

error[E0433]: failed to resolve: use of undeclared crate or module `uucore`
   --> src/uucore/src/lib/features/proc_info.rs:431:33
    |
431 |         let main_tid = unsafe { uucore::libc::gettid() };
    |                                 ^^^^^^ use of undeclared crate or module `uucore`
    |
help: there is a crate or module with a similar name
    |
431 |         let main_tid = unsafe { core::libc::gettid() };
    |                                 ~~~~
help: consider importing one of these crates
    |
366 +     use crate::libc;
    |
366 +     use nix::libc;
    |
help: if you import `libc`, refer to it directly
    |
431 -         let main_tid = unsafe { uucore::libc::gettid() };
431 +         let main_tid = unsafe { libc::gettid() };
    |
error[E0433]: failed to resolve: use of undeclared crate or module `uucore`
   --> src/uucore/src/lib/features/proc_info.rs:441:43
    |
441 |             let new_thread_tid = unsafe { uucore::libc::gettid() };
    |                                           ^^^^^^ use of undeclared crate or module `uucore`
    |
help: there is a crate or module with a similar name
    |
441 |             let new_thread_tid = unsafe { core::libc::gettid() };
    |                                           ~~~~
help: consider importing one of these crates
    |
366 +     use crate::libc;
    |
366 +     use nix::libc;
    |
help: if you import `libc`, refer to it directly
    |
441 -             let new_thread_tid = unsafe { uucore::libc::gettid() };
441 +             let new_thread_tid = unsafe { libc::gettid() };
    |

For more information about this error, try `rustc --explain E0433`.
error: could not compile `uucore` (lib test) due to 2 previous errors

Bisection blames this:

commit 16c174d82684a83f76167889305650370f9ce3ce (HEAD)
Author: Tuomas Tynkkynen <[email protected]>
Date:   Mon Feb 24 12:00:45 2025 +0200

    uucore: Sync thread_ids() method from procps

 src/uucore/src/lib/features/proc_info.rs | 48 +++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 47 insertions(+), 1 deletion(-)

Reverting that and 339a6d4 on main fixes the issue.

@dezgeg FYI

[dezgeg]

Ah, so something is blocking proc_info from compiling by default so CI doesn't catch it. #7385 should fix it at least.

[dezgeg]

But ideally something needs to change in CI to include that into build.

[drinkcat]

I think we just need to add --workspace to the cargo test command.