Subtree push with 1.77.0 nightly 2023-12-28#5994

Merged

calebcartwright merged 17 commits intorust-lang:masterfrom

ytmimi:subtree_sync_with_1.77.0_nightly_2023_12_28

Dec 29, 2023

Commits on Dec 14, 2023

Split `Handler::emit_diagnostic` in two.
nnethercote
committed

Commits on Dec 19, 2023

Plumb awaitness of for loops
eholk
committed

Commits on Dec 20, 2023

Commits on Dec 22, 2023

Auto merge of #119163 - fmease:refactor-ast-trait-bound-modifiers, r=compiler-errors
bors
committed
Auto merge of #118847 - eholk:for-await, r=compiler-errors
bors
committed

Commits on Dec 23, 2023

Commits on Dec 28, 2023