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Do not suggest wrapping an item if it has ambiguous un-imported methods #94237

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If the method is defined for the receiver we have, but is ambiguous during probe, then it probably comes from one of several traits that just weren't used. Don't suggest wrapping the receiver in Box/etc., even if that makes the method probe unambiguous.

Fixes #94218

@rustbot rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Feb 22, 2022
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r? @lcnr

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Feb 22, 2022
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@compiler-errors compiler-errors force-pushed the dont-wrap-ambiguous-receivers branch from ff50b21 to 0626919 Compare February 22, 2022 00:45
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lcnr commented Feb 22, 2022

@bors r+ rollup

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bors commented Feb 22, 2022

📌 Commit 0626919 has been approved by lcnr

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 22, 2022
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 22, 2022
…askrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#94169 (Fix several asm! related issues)
 - rust-lang#94178 (tidy: fire less "ignoring file length unneccessarily" warnings)
 - rust-lang#94179 (solarish current_exe using libc call directly)
 - rust-lang#94196 (compiletest: Print process output info with less whitespace)
 - rust-lang#94208 (Add the let else tests found missing in the stabilization report)
 - rust-lang#94237 (Do not suggest wrapping an item if it has ambiguous un-imported methods)
 - rust-lang#94246 (ScalarMaybeUninit is explicitly hexadecimal in its formatting)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 396910a into rust-lang:master Feb 22, 2022
@rustbot rustbot added this to the 1.61.0 milestone Feb 22, 2022
@compiler-errors compiler-errors deleted the dont-wrap-ambiguous-receivers branch April 7, 2022 04:33
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rustc suggests wrapping receivers even if it wouldn't immediately help method resolution
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