…nvocation

This commit adds a regression test for rust-lang#55809 which checks that a
overflow does not occur when evaluating a requirement for async
functions and `&mut` arguments in some specific circumstances.

Rewrite the SelfCtor early and use the replacement Def when
calculating the path_segs.

Note that this also changes which def is seen by the code that
computes user_self_ty and is_alias_variant_ctor; I don't see a
immediate issue with that, but I'm not 100% clear on the
implications.

Fixes rust-lang#57924

…);` and potentially instantiated at different types.

(Updated to reflect changes in diagnostic output and compiletest infrastructure.)

The current language may be amusing, yet is just imprecise and most especially difficult to understand for someone who speaks English as a foreign language.

Use the information same as rustc.

As discussed in rust-lang#55078, there's no known reason for this restriction.

It's unlikely that repr(simd) will be stabilized in its current form, but
might as well remove some restrictions on it.

This removes the branch in `is_machine` which returns false for these types.
`is_machine` is only used for the repr(simd) type validation check.

…constraints-on-bindings-too, r=nikomatsakis

extra testing of how NLL handles wildcard type `_`

test that wildcard type `_` is not duplicated by `type Foo<X> = (X, X);` and potentially instantiated at different types when used in type ascriptions in let bindings.

(NLL's handling of this for the type ascription *expression form* is currently broken, or at least differs from what AST-borrowck does. I'll file a separate bug about that. Its not something critical to address since that expression is guarded by `#![feature(type_ascription)]`.)

cc rust-lang#55748

Fix generic argument lookup for Self

Rewrite the SelfCtor early and use the replacement Def when
calculating the path_segs.

Note that this also changes which def is seen by the code that
computes user_self_ty and is_alias_variant_ctor; I don't see a
immediate issue with that, but I'm not 100% clear on the
implications.

Fixes rust-lang#57924

r? @eddyb

resolve: Account for new importable entities

Fixes the ICE encountered in rust-lang#58837
r? @Centril

we can now skip should_panic tests with the libtest harness

add suggestions to invalid macro item error

r? @estebank

Be more discerning on when to attempt suggesting a comma in a macro invocation

Fix rust-lang#58796.

Suggest return lifetime when there's only one named lifetime

Fix rust-lang#29094.

Make std time tests more robust for platform differences

Previously, `time::tests::since_epoch` and `time::tests::system_time_math` would fail if the platform represents a SystemTime as unix epoch + `u64` nanoseconds.

r? @sfackler

Stabilize Range*::contains.

Closes rust-lang#32311. There's also a bit of rustfmt on range.rs thrown in for good measure (I forgot to turn off format-on-save in VSCode).

[wg-async-await] Add regression test for rust-lang#55809.

Fixes rust-lang#55809.

This PR adds a regression test for rust-lang#55809 which checks that a
overflow does not occur when evaluating a requirement for async
functions and `&mut` arguments in some specific circumstances.

…ertj

Add `-Z allow_features=...` flag

Adds a compiler option to allow only whitelisted features.

For projects on nightly that want to prevent feature-creep (and maybe, someday, move off of nightly). Not being able to enforce this has been a problem on Fuchsia and at other big companies.

This doesn't support filtering edition feature flags, but someone is welcome to add that if they need it.

Use try blocks in rustc_codegen_ssa

r? @scottmcm

No old chestnuts in iter::repeat docs

The current language may be amusing, yet is just imprecise and most especially difficult to understand for someone who speaks English as a foreign language.

…-restriction, r=alexcrichton

Remove restriction on isize/usize in repr(simd)

As discussed in rust-lang#55078, there's no known reason for this restriction.

It's unlikely that repr(simd) will be stabilized in its current form, but
might as well remove some restrictions on it.

This removes the branch in `is_machine` which returns false for these types.
`is_machine` is only used for the repr(simd) type validation check.

Output diagnostic information for rustdoc

Use the information same as rustc.

Improved test output

…=oli-obk

Reduce a Code Repetition Related to Bit Operation

This PR is related to [rust-lang#49937](rust-lang#49937).
Should I do more commits about [`FIXME(49937)`](https://github.com/rust-lang/rust/search?q=FIXME%2849937%29&unscoped_q=FIXME%2849937%29) in this PR?

Add x86_64 musl host to the manifest

@alexcrichton r?

Probably too late for rust-lang#59207