Rollup of 4 pull requests #84370
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Rollup of 4 pull requests #84370
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…, r=pnkfelix Improve diagnostic for when field is never read Related to (but does not close) rust-lang#81658 This completes the first step of ``@pnkfelix's`` [mentoring instructions](rust-lang#81658 (comment)) but does not actually improve the diagnostics (yet!). The two tests are heavily reduced versions of code from the original bug report. I've confirmed that the reduced `field-used-in-ffi` test [fails on nightly](https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=f0862c89ddca028c55c20a5ed05e679a) but [passes on stable](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=f0862c89ddca028c55c20a5ed05e679a). This confirms that the regression is reproduced correctly. The `drop-only-field` test is a case that ``@pnkfelix`` mentioned in his mentoring instructions. It is not a regression, but will come in handy when we make the diagnostic smarter by looking at whether the field type implements `Drop`. Per the [rustc-dev-guide](https://rustc-dev-guide.rust-lang.org/tests/adding.html), each test includes a comment summarizing what it is about.
Add a suggestion when using a type alias instead of trait alias Fixes rust-lang#43913 r? ``@estebank``
…=jonas-schievink ⬆️ rust-analyzer
…trochenkov Improve the docstrings of the `Lto` struct. This change is the result of [this zulip discussion](https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/Making.20sense.20of.20LTO.20modes.20in.20rustc). Hopefully it makes things a little clearer. What do you think?
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@bors r+ rollup=never p=5 |
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📌 Commit 530b02f has been approved by |
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⌛ Testing commit 530b02f with merge 3236ddb351992ead5eb98580023cea85fcfddc58... |
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The job Click to see the possible cause of the failure (guessed by this bot) |
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💔 Test failed - checks-actions |
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Successful merges:
Ltostruct. #84365 (Improve the docstrings of theLtostruct.)Failed merges:
r? @ghost
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