Trait in enforced-import-renames should still allow import as _

[taladar]

Summary

Or at the very least this should be a configuration option for the lint. Usually importing a trait this way means the name is never used in the code so it is sensible to not rename e.g. std::io::Write to IoWrite to distinguish it from std::fmt::Write in those cases.

Lint Name

missing_enforced_import_renames

Reproducer

I tried this code:

use std::io::Write as _;

with the lint set to deny in Cargo.toml and clippy toml

enforced-import-renames = [
    { path = "std::fmt::Write", rename = "FmtWrite" },
    { path = "std::io::Write", rename = "IoWrite" },

]

I saw this happen:

error: this import should be renamed
 --> code.rs:4:1
  |
4 | use std::io::Write as _;
  | ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `use std::io::Write as IoWrite`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.91.0/index.html#missing_enforced_import_renames

I expected to see this happen:

No lint error because I assumed the lint was intended for situations where the name is actually imported to be used in the code.

Version

rustc 1.91.1 (ed61e7d7e 2025-11-07)
binary: rustc
commit-hash: ed61e7d7e242494fb7057f2657300d9e77bb4fcb
commit-date: 2025-11-07
host: x86_64-unknown-linux-gnu
release: 1.91.1
LLVM version: 21.1.2

Additional Labels

No response