11964: internal: Show more project building errors to the user r=Veykril a=Veykril
Something very fishy is going on with the `rustc_workspace` handling, which caused this bug to only manifest in the `std` library but not other library crate... So there is either a bug there or just the fact that we seem to add duplicate dependencies (I think this is what we are doing with this right?) might be tripping something up somewhere.
cc https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frust-analyzer/topic/Rust-analyzer.20use.20inside.20stdlib
bors r+
Co-authored-by: Lukas Wirth <lukastw97@gmail.com>
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