1.95 beta regression: "imports need to be explicitly named"

[theemathas]

Regression found by the 1.95 beta crater run.

[INFO] [stdout] error: imports need to be explicitly named
[INFO] [stdout]   --> src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / rutie_serde_methods!(
[INFO] [stdout] 22 | |     SemanticAnalyzer,
[INFO] [stdout] 23 | |     _rtself,
[INFO] [stdout] 24 | |     ruby_class!(Exception),
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | | );
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `rutie_serde_methods` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: try renaming it with a name
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rutie-serde-0.3.0/src/macros.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |             use $crate::{self as name, DeserializeWrapper, IntoAnyObject, IntoException, ResultExt};
[INFO] [stdout]    |                               +++++++

https://crater-reports.s3.amazonaws.com/beta-1.95-3/1.95.0-beta.3/gh/kind-io.semantic_analysis/log.txt

[theemathas]

Minimal reproducer:

macro_rules! foo {
    () => {
        use $crate::{self};
    }
}

foo!();

Presumably regressed in #146972. cc @mu001999 @petrochenkov

[petrochenkov]

Intentional, we've already seen this in crater runs in #146972 (comment).

[theemathas]

@petrochenkov This crate (semantic_analysis_ was not mentioned in that comment you linked though.

[theemathas]

Oh, the PR was closing #146967, which is precisely about prohibiting this. Should this issue be closed then?

[mu001999]

Should this issue be closed then?

I think this could be closed, it is intentionally prohibited now.