Most (all?) macros are unresolved

[umanwizard]

Bisected to f96c1a0 . This makes rust-analyzer basically unusable as even basic things from the prelude like vec![] and todo!() are unresolved.

In case it matters, the code I'm working on is the latest origin/main of https://github.com/MaterializeInc/materialize .

[umanwizard]

The server logs hundreds of messages like

[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `std::prelude::rust_2015` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `std::prelude::rust_2015` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `std::prelude::rust_2015` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `std::prelude::rust_2015` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::std::prelude::rust_2018` to module (resolved to None)

[jonas-schievink]

Which Rust version are you using?

[flodiebold]

1.51

[dvdplm]

Seeing something similar although not quite:

[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR hir_def::nameres::collector] could not resolve prelude path `::core::prelude::rust_2018` to module (resolved to None)
[ERROR proc_macro_api::process] proc macro server crashed, server process state: Ok(Some(ExitStatus(ExitStatus(11)))), server request error: Os { code: 32, kind: BrokenPipe, message: "Broken pipe" }

Toolchain:
nightly-x86_64-apple-darwin (default)
rustc 1.54.0-nightly (657bc0188 2021-05-31)

Rust analyzer 4f63e79 (Merge #9097)

FWIW I've seen the proc macro server crashed for some time now (I usually build a fresh rust-analyzer every day).

Happy to provide more debugging information.

[jonas-schievink]

We don't really support Rust versions older than the current stable

[umanwizard]

@jonas-schievink Ok, good to know. Feel to close this if you don't consider issues involving old stable to be bugs in rust-analyzer.

[jonas-schievink]

For now, I'm adding a fallback to the legacy prelude in #9102, please test if that fixes your issue

[dvdplm]

#9102 reduces my error log to:

[ERROR proc_macro_api::process] proc macro server crashed, server process state: Ok(Some(ExitStatus(ExitStatus(11)))), server request error: Os { code: 32, kind: BrokenPipe, message: "Broken pipe" }

So that's progress. :)

[jonas-schievink]

Do names resolve correctly? The PR also silences the error

[umanwizard]

#9102 fixes the issue for me.