This allows the standard library to be compiled even with `download-rustc` enabled.
Which means it's no longer a requirement to compile `rustc` in order to compile `std`.

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Signed-off-by: onur-ozkan <work@onurozkan.dev>

…et` like map API

This fixes a regression from rust-lang#128182.

Signed-off-by: onur-ozkan <work@onurozkan.dev>

Signed-off-by: onur-ozkan <work@onurozkan.dev>

…t, r=compiler-errors

turn `invalid_type_param_default` into a `FutureReleaseErrorReportInDeps`

``@rust-lang/types`` I assume the plan is still to disallow this? It has been a future-compat lint for a long time, seems ripe to go for hard error.

However, turns out that outright removing it right now would lead to [tons of crater regressions](rust-lang#127655 (comment)), so for now this PR just makes this future-compat lint show up in cargo's reports, so people are warned when they use a dependency that is affected by this.

Fixes rust-lang#27336 by removing the feature gate (so there's no way to silence the lint even on nightly)
CC rust-lang#36887

…k-Simulacrum

force compiling std from source if modified

This allows the standard library to be compiled even with `download-rustc` enabled. Which means it's no longer a requirement to compile `rustc` in order to compile `std`.

Ref. rust-lang#127322 (comment).
Blocker for rust-lang#122709.

…orks, r=Mark-Simulacrum

std::thread: available_parallelism implementation for vxWorks proposal.

Implement cursors for `BTreeSet`

Tracking issue: rust-lang#107540

This is a straightforward wrapping of the map API, except that map's `CursorMut` does not make sense, because there is no value to mutate. Hence, map's `CursorMutKey` is wrapped here as just `CursorMut`, since it's unambiguous for sets and we don't normally speak of "keys". On the other hand, I can see some potential for confusion with `CursorMut` meaning different things in each module. I'm happy to take suggestions to improve that.

r? `@Amanieu`

…lacrum

Add test for updating enum discriminant through pointer

Closes rust-lang#122600

…enkov

docs(resolve): more explain about `target`

r? ```@petrochenkov```

handle crates when they are not specified for std docs

Fixes a regression from rust-lang#128182.

Resolves rust-lang#128610

run-make: enable msvc for `link-dedup`

This is just a case of differing style of linker arguments.

I also cleaned up a bit where we were running the same command three times in a row. Instead I reused the output.

One thing that confused me is why we were testing for the same lib three times in a row but not two. After figuring that out I added a note to hopefully save future readers some confusion.

try-job: x86_64-msvc
try-job: i686-msvc