Make suggestion of changing mutability of arguments broader#81990
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bors merged 1 commit intorust-lang:masterfrom Feb 12, 2021
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Make suggestion of changing mutability of arguments broader#81990bors merged 1 commit intorust-lang:masterfrom
bors merged 1 commit intorust-lang:masterfrom
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I'm delighted that the change was this small :)
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| = note: the following trait bounds were not satisfied: | ||
| `&T: std::io::Read` | ||
| which is required by `BufReader<&T>: BufRead` |
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As a separate issue, it'd be nice if we mentioned that BufReader<&mut T> would satisfy the trait bounds.
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@bors r+ rollup |
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…estebank Make suggestion of changing mutability of arguments broader Fix rust-lang#81421 Previously rustc tries to emit the suggestion of changing mutablity unless `!trait_ref.has_infer_types_or_consts() && self.predicate_can_apply(obligation.param_env, trait_ref)` and this led to some false negatives to occur.
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Rollup of 16 pull requests Successful merges: - rust-lang#79983 (fix indefinite article in cell.rs) - rust-lang#81831 (Don't display `mut` in arguments for functions documentation) - rust-lang#81947 (Relax ItemCtxt::to_ty lifetime) - rust-lang#81954 (RELEASES.md 1.50: Group platform support notes together) - rust-lang#81955 (bootstrap: Locate llvm-dwp based on llvm-config bindir) - rust-lang#81959 (Fix assosiated typo) - rust-lang#81964 (Fix documentation not showing on localStorage error) - rust-lang#81968 (bootstrap: fix wrong docs installation path) - rust-lang#81990 (Make suggestion of changing mutability of arguments broader) - rust-lang#81994 (Improve long explanation for E0542 and E0546) - rust-lang#81997 (dist: include src/build_helper as part of the crate graph for rustc-dev) - rust-lang#82003 (Stack probes: fix error message) - rust-lang#82004 (clean up clean::Static struct) - rust-lang#82011 (Fix private intra-doc warnings on associated items) - rust-lang#82013 (Tell user how to fix CI file being not up to date) - rust-lang#82017 (Fix typo in mod.rs) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Fix #81421
Previously rustc tries to emit the suggestion of changing mutablity unless
!trait_ref.has_infer_types_or_consts() && self.predicate_can_apply(obligation.param_env, trait_ref)and this led to some false negatives to occur.