This reduces the compiler-doc file from 40K to 36K, a 10% reduction in size.

Fixes rust-lang#100066

Fix rust-lang#78907.

Set llvm configs when building lld

Several LLVM configs applied when building LLVM should also be applied when building LLD.

For example, without the fix, setting both `llvm.thin-lto=true` and `rust.lld=true` when building on Linux will fail, since we need to manually override the compiler and linker to `clang`, but those will not be used when building LLD, causing link errors.

r? ``@jyn514``

Fix backwards-compatibility check for tests with `+whole-archive`

Fixes rust-lang#100066

…s, r=GuillaumeGomez

rustdoc: use a more compact encoding for source-files.js

This reduces the compiler-doc file from 40K to 36K, a 10% reduction in size.

…Dylan-DPC

Fix typo

r? ``@jackh726``

…ylan-DPC

Remove more Clean trait implementations

Follow-up of rust-lang#99638.

r? `@notriddle`

…871, r=compiler-errors

Add regression test for rust-lang#90871

closes rust-lang#90871

fix trailing whitespace in error message

…rrors

Provide suggestion on missing `let` in binding statement

Fix rust-lang#78907.

Fallout from the type ascription syntax.

FilesTimes support does not build for ESP-IDF

Commit rust-lang@1f5d8d4 broke STD for `target_os = "espidf"`.

In future, we might come up with something more sophisticated (as in using the `utime` function which *is* available on the ESP-IDF platform), but for now we are treating ESP-IDF just like `Redox` in that the new API fails at runtime. Most important for us ATM is to restore successful compilation of STD on our platform.