Jonathan Brouwer 5abe5ea630 Rollup merge of #155546 - Unique-Usman:ua/impl_traits, r=estebank ...

Improve E0308 error message for `impl Trait` return mismatches

When a function returns `impl Trait`, all branches must return the same concrete type. Previously, the compiler showed:

    expected `First` because of return type

This was misleading, as it suggested the return type was `First`, rather than any single type implementing the trait.

Update the diagnostic to:

    expected a single type implementing `Value` because of return type

Also highlight the first return expression to make it clearer why subsequent returns do not match.

2026-04-21 20:42:50 +02:00

..

rustc

…

rustc_abi

fixup! Refactor FnDecl and FnSig flags into packed structs

2026-04-16 16:28:59 +10:00

rustc_arena

Disallow ZST allocations with TypedArena.

2026-04-15 20:03:07 +10:00

rustc_ast

ast: Preserve the star symbol span in glob delegation items

2026-04-14 11:32:33 +03:00

rustc_ast_ir

…

rustc_ast_lowering

Auto merge of #155223 - teor2345:fndef-refactor, r=mati865

2026-04-18 23:46:37 +00:00

rustc_ast_passes

Remove target arguments & features from parse_limited

2026-04-18 19:13:30 +02:00

rustc_ast_pretty

Merge Printer impl blocks.

2026-04-16 18:22:56 +10:00

rustc_attr_parsing

say "implementation(s) in "not on trait impl" lints

2026-04-21 11:30:14 +02:00

rustc_baked_icu_data

…

rustc_borrowck

Rollup merge of #155549 - nnethercote:rm-lifetimes, r=JohnTitor

2026-04-20 13:52:07 +02:00

rustc_builtin_macros

Rollup merge of #154865 - sunshowers:binary-search-test, r=Mark-Simulacrum

2026-04-19 16:04:32 +02:00

rustc_codegen_cranelift

fix all errors

2026-04-20 00:18:28 +08:00

rustc_codegen_gcc

fix all errors

2026-04-20 00:18:28 +08:00

rustc_codegen_llvm

Rollup merge of #153411 - Sa4dUs:offload-slices, r=ZuseZ4

2026-04-20 20:50:20 -04:00

rustc_codegen_ssa

fix all errors

2026-04-20 00:18:28 +08:00

rustc_const_eval

fix all errors

2026-04-20 00:18:28 +08:00

rustc_data_structures

Rewrite FlatMapInPlace.

2026-04-21 15:52:55 +10:00

rustc_driver

…

rustc_driver_impl

Remove target arguments & features from parse_limited

2026-04-18 19:13:30 +02:00

rustc_error_codes

Fix error code example

2026-04-15 13:50:43 +02:00

rustc_error_messages

Make rustc_attr_parsing::SharedContext::emit_lint take a MultiSpan instead of a Span

2026-04-10 15:06:57 +02:00

rustc_errors

Remove AttributeLintKind::UnusedDuplicate

2026-04-17 23:43:08 +02:00

rustc_expand

Remove target arguments & features from parse_limited

2026-04-18 19:13:30 +02:00

rustc_feature

Rollup merge of #154248 - lms0806:issue_154034, r=TaKO8Ki

2026-04-20 13:52:07 +02:00

rustc_fs_util

…

rustc_graphviz

…

rustc_hashes

…

rustc_hir

Auto merge of #155223 - teor2345:fndef-refactor, r=mati865

2026-04-18 23:46:37 +00:00

rustc_hir_analysis

fix all errors

2026-04-20 00:18:28 +08:00

rustc_hir_id

Remove Clone impl for StableHashingContext.

2026-04-03 15:34:33 +11:00

rustc_hir_pretty

Refactor FnDecl and FnSig flags into packed structs

2026-04-16 07:08:08 +10:00

rustc_hir_typeck

Rollup merge of #155546 - Unique-Usman:ua/impl_traits, r=estebank

2026-04-21 20:42:50 +02:00

rustc_incremental

Rollup merge of #154529 - Zalathar:setup-dep-graph, r=cjgillot

2026-04-05 13:38:16 +10:00

rustc_index

Bump stage0 to 1.96 beta

2026-04-16 19:30:56 -04:00

rustc_index_macros

Use Hcx/hcx consistently for StableHashingContext.

2026-03-31 20:16:57 +11:00

rustc_infer

fix all errors

2026-04-20 00:18:28 +08:00

rustc_interface

fix all errors

2026-04-20 00:18:28 +08:00

rustc_lexer

Fix comment on is_horizontal_whitespace

2026-03-04 06:10:42 +00:00

rustc_lint

Auto merge of #155567 - JonathanBrouwer:rollup-0zpjwMk, r=JonathanBrouwer

2026-04-20 19:35:12 +00:00

rustc_lint_defs

Auto merge of #155567 - JonathanBrouwer:rollup-0zpjwMk, r=JonathanBrouwer

2026-04-20 19:35:12 +00:00

rustc_llvm

Add target arch verification for LLVM intrinsics

2026-04-12 23:33:27 +05:30

rustc_log

…

rustc_macros

Add a handle_cycle_error query modifier.

2026-04-03 13:44:12 +11:00

rustc_metadata

fix all errors

2026-04-20 00:18:28 +08:00

rustc_middle

Ensure we don't feed owners from ast lowering if we ever make that query tracked

2026-04-21 08:56:02 +02:00

rustc_mir_build

Rollup merge of #155549 - nnethercote:rm-lifetimes, r=JohnTitor

2026-04-20 13:52:07 +02:00

rustc_mir_dataflow

fix all errors

2026-04-20 00:18:28 +08:00

rustc_mir_transform

Auto merge of #155491 - ohadravid:faster-storage-in-copyprop-and-gvn, r=saethlin

2026-04-21 05:35:16 +00:00

rustc_monomorphize

Auto merge of #155491 - ohadravid:faster-storage-in-copyprop-and-gvn, r=saethlin

2026-04-21 05:35:16 +00:00

rustc_next_trait_solver

fix all errors

2026-04-20 00:18:28 +08:00

rustc_parse

Make reparsed guard metavars collect tokens

2026-04-20 13:36:27 +08:00

rustc_parse_format

…

rustc_passes

Rollup merge of #155572 - mejrs:move_target_checks, r=JonathanBrouwer,GuillaumeGomez

2026-04-21 08:22:17 -04:00

rustc_pattern_analysis

fix all errors

2026-04-20 00:18:28 +08:00

rustc_privacy

fix all errors

2026-04-20 00:18:28 +08:00

rustc_proc_macro

…

rustc_public

Refactor FnDecl and FnSig flags into packed structs

2026-04-16 07:08:08 +10:00

rustc_public_bridge

fix all errors

2026-04-20 00:18:28 +08:00

rustc_query_impl

Refactor FnDecl and FnSig flags into packed structs

2026-04-16 07:08:08 +10:00

rustc_resolve

Auto merge of #154945 - oli-obk:merge-visitors-def-collector-brg, r=petrochenkov

2026-04-20 23:10:06 +00:00

rustc_sanitizers

fix all errors

2026-04-20 00:18:28 +08:00

rustc_serialize

update thin-vec

2026-04-08 21:09:07 +02:00

rustc_session

Rollup merge of #155389 - Zalathar:flag-macros, r=mati865

2026-04-20 18:57:01 +02:00

rustc_span

Auto merge of #155416 - Zalathar:rollup-D1EWnrR, r=Zalathar

2026-04-17 07:35:43 +00:00

rustc_symbol_mangling

fix all errors

2026-04-20 00:18:28 +08:00

rustc_target

add llvm writable attribute conditionally

2026-04-16 12:29:39 +00:00

rustc_thread_pool

…

rustc_trait_selection

Rollup merge of #151194 - chenyukang:yukang-fix-150701-async-closure, r=wesleywiser

2026-04-21 08:22:15 -04:00

rustc_traits

fix all errors

2026-04-20 00:18:28 +08:00

rustc_transmute

Make layout_of cycles fatal errors

2026-03-24 18:25:21 +01:00

rustc_ty_utils

fix all errors

2026-04-20 00:18:28 +08:00

rustc_type_ir

Auto merge of #155552 - JonathanBrouwer:rollup-JKIpTuW, r=JonathanBrouwer

2026-04-20 16:15:13 +00:00

rustc_type_ir_macros

…

rustc_windows_rc

…