Latest rustc tags unused_imports on trait imports spuriously #145185
Description
Copying from rust-lang/rust-clippy#15442
Summary
I honestly can't make heads or tails of why, but rustc is generating an unused_imports warning on some traits imports, but if you remove the import the build fails in several places.
Reproducer
I honestly don't have a clue as to what the issue is here, so a minimal reproducer is hard.
lightningdevkit/rust-lightning#4000 removes the allows that were previously in place, see the last commit.
rustc stable
info: latest update on 2025-08-07, rust version 1.89.0 (29483883e 2025-08-04)
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Area: Lints (warnings about flaws in source code) such as unused_mut.Category: This is a bug.Issue: Indicates that prioritization has been requested for this issue.Lint: unused_importsRelevant to the compiler team, which will review and decide on the PR/issue.Performance or correctness regression from one stable version to another.