It's the only use of the function.

Brings in a bugfix to be compatible with the master branch of `make` where
jobserver fds are set in nonblocking mode

…ng#44433.

The main goal here is to use FreeBSD's normal libc++, instead of
statically linking the libstdc++ packaged with GCC, because that
libstdc++ has bugs that cause rustc to deadlock inside LLVM.

But the easiest way to use libc++ is to switch the build from GCC to
Clang, and the Clang package in the Ubuntu image already knows how to
cross-compile (given a sysroot and preferably cross-binutils), so the
toolchain script now uses that instead of building a custom compiler.

This also de-duplicates the `build-toolchain.sh` script.

Paths to object files generated from them were too long and caused errors

output message is shown in another 'help:' block

line with +100 columns formatted

test adjusted

Fixes rust-lang#45197

…, r=jseyfried

Inline eq_slice into str::eq

It's the only use of the function.

…ackler

Update the `jobserver` crate

Brings in a bugfix to be compatible with the master branch of `make` where
jobserver fds are set in nonblocking mode

…chton

Re-do the FreeBSD cross-builds to use Clang and libc++.  Fixes rust-lang#44433.

The main goal here is to use FreeBSD's normal libc++, instead of
statically linking the libstdc++ packaged with GCC, because that
libstdc++ has bugs that cause rustc to deadlock inside LLVM.

But the easiest way to use libc++ is to switch the build from GCC to
Clang, and the Clang package in the Ubuntu image already knows how to
cross-compile (given a sysroot and preferably cross-binutils), so the
toolchain script now uses that instead of building a custom compiler.

This also de-duplicates the `build-toolchain.sh` script.

Fix rustc documentation typo

I'm new to rustc but this looks like a typo.

…ichton

Fix PEP8 style issues in bootstrap code

This fixes PEP8 style issues (other than line-length) in the bootstrap Python code.

The most important fix is in the `set` function where the code was indented with 6 spaces instead of 4.

Better compile error output when using arguments instead of types

Following @estebank sugestion on issue rust-lang#18945 (comment)

…labnik

Documented a few more unstable feature gates.

unboxed closures, fn_traits, and OIBIT. hope these are decent!

Shorten some test names

An immediate fix for the first issue in rust-lang#45103
r? @alexcrichton

Prevent fmt::Arguments from being shared across threads

Fixes rust-lang#45197

This is a **breaking change**! Without doing this it's very easy to create race conditions.

There's probably a way to do this without breaking valid use cases, but it would require quite an overhaul of the formatting machinery.