x clean library/std invokes cargo clean --target ... --release std, resulting in

error: unexpected argument 'std' found

Usage: cargo clean [OPTIONS]

For more information, try '--help'.

Cleaning a compiler/ crate correctly adds the -p flag needed to specify packages.

I did notice that adding the -p caused the command to complete successfully, but the std build dir was not actually cleaned.

@rustbot label +T-bootstrap