typeck: use Pattern obligation cause more for better diagnostics
#69452
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Feb 28, 2020
Rollup of 10 pull requests Successful merges: - #68989 (Update RELEASES.md for 1.42.0) - #69340 (instantiate_value_path: on `SelfCtor`, avoid unconstrained tyvars) - #69384 (parser: `token` -> `normalized_token`, `nonnormalized_token` -> `token`) - #69452 (typeck: use `Pattern` obligation cause more for better diagnostics) - #69481 (use char instead of &str for single char patterns) - #69522 (error_derive_forbidden_on_non_adt: be more graceful) - #69538 (Stabilize `boxed_slice_try_from`) - #69539 (late resolve, visit_fn: bail early if there's no body.) - #69541 (Remove unneeded calls to format!()) - #69547 (remove redundant clones, references to operands, explicit boolean comparisons and filter(x).next() calls.) Failed merges: r? @ghost
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Mar 8, 2020
…idtwco check_binding_alt_eq_ty: improve precision wrt. `if let` Follow up to rust-lang#69452 -- this tweaks the `check_binding_alt_eq_ty` logic wrt. wording so that `if let` doesn't include "in this arm" (because there can only ever be one arm). r? @estebank
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…idtwco check_binding_alt_eq_ty: improve precision wrt. `if let` Follow up to rust-lang#69452 -- this tweaks the `check_binding_alt_eq_ty` logic wrt. wording so that `if let` doesn't include "in this arm" (because there can only ever be one arm). r? @estebank
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r? @estebank