…l exclusion

The methods on the structures `fs::FileType` and `fs::Metadata` of (respectively) `is_file`, `is_dir`, and
`is_symlink` had some ambiguity in documentation, where it was not noted whether files will pass those tests
exclusively or not. It is now written that the tests are mutually exclusive.

Fixes rust-lang#48345.

…once for multi-threaded code

This commit tweaks where timing and step information is printed out as part of
the build, ensuring that we do it as close to the location where work happens as
possible. In rustbuild various functions may perform long blocking work as
dependencies are assembled, so if we print out timing information early on we
may accidentally time more than just the step we were intending to time!

Closes rust-lang#40895.

LLVM seems to still put the assume calls in when inlining, so this probably isn't in a place where it can be turned on by default, but it's interesting to experiment with.

For example, this makes `swap::<u64x8>` be 8x `vmovaps	ymm` instead of 16x `vmovups	xmm`, on my cpu.

This stabilizes `main` with non-() return types; see rust-lang#48453.

…generators. Fixes rust-lang#47787

This reverts commit e5a55e7.

This removes 10 dependencies from the build 🎉

…tion

and included that it returns radians

This assertion was preventing `./x.py install rustfmt` if attempted
without an "extended" build configuration, but it actually builds and
installs just fine.

In addition to the `Fn*` family of traits, closures now implement `Copy` (and similarly `Clone`) if all of the captures do.

This was attempted but left incomplete in PR rust-lang#42664, where only the toml
file was removed.

Always print `aborting due to n previous error(s)`

r? @michaelwoerister

…docfix, r=bluss

Fix Issue rust-lang#48345, is_file, is_dir, and is_symlink note mutual exclusion

The methods on the structures `fs::FileType` and `fs::Metadata` of (respectively) `is_file`, `is_dir`, and `is_symlink` had some ambiguity in documentation, where it was not noted whether files will pass those tests exclusively or not. It is now written that the tests are mutually exclusive.

Fixes rust-lang#48345.

…mulacrum

rustbuild: Tweak where timing information goes

This commit tweaks where timing and step information is printed out as part of
the build, ensuring that we do it as close to the location where work happens as
possible. In rustbuild various functions may perform long blocking work as
dependencies are assembled, so if we print out timing information early on we
may accidentally time more than just the step we were intending to time!

 Add a CI job for parallel rustc using x.py check

r? @alexcrichton

…_bytes, r=bluss

Stabilise FromUtf8Error::as_bytes

Closes rust-lang#40895.

Add a -Z flag for LLVM align attributes on arguments

LLVM seems to still put the assume calls in when inlining, so this probably isn't in a place where it can be turned on by default, but it's interesting to experiment with.

For example, this makes `mem::swap::<u64x8>` be 8x `vmovaps	ymm` instead of 16x `vmovups	xmm`, on my cpu.

…, r=nikomatsakis

Stabilize termination_trait, split out termination_trait_test

For rust-lang#48453.

First time contribution, so I'd really appreciate any feedback on how this PR can be better.

Not sure exactly what kind of documentation update is needed. If there is no PR to update the reference, I can try doing that this week as I have time.

Host compiler documentation

Fixes rust-lang#29893. Rust Central Station PR: rust-lang/rust-central-station#40

r? @alexcrichton

Make resuming generators unsafe instead of the creation of immovable generators

cc @withoutboats

Fixes rust-lang#47787

… r=Mark-Simulacrum

Bump racer and home

This removes 10 dependencies from the build 🎉

…ug, r=steveklabnik

Document format_args! / Arguments<'a> behavior wrt. Display and Debug

This is a follow up PR to rust-lang#49067 , this documents the behavior of `format_args!` (i.e: `Argument<'a>`) wrt. `Display` and `Debug`.

r? @steveklabnik

Cargo fmt libtest

r? @nrc

Using `rustfmt 0.4.1- (87180d9 2018-03-16)` (`rustfmt --version` is a bit broken).

Fixed clockwise/counter-clockwise in atan2 documentation in f32 and f64 and included that it returns radians

None

…trochenkov

Better diagnostics for '..' pattern fragment not in the last position

Fixes rust-lang#49257.

…cro-defkey, r=eddyb

Fix DefKey lookup for proc-macro crates.

Add a special case for proc-macro crates for `def_key()` in the metadata decoder (like we already have for many other methods in there). In the long run, it would be preferable to get rid of the need for special casing proc-macro crates (see rust-lang#49271).

Fixes rust-lang#48739 (though I wasn't able to come up with a regression test, unfortunately)

r? @eddyb

…er,eddyb

Remove slow HashSet during miri stack frame creation

fixes rust-lang#49237

probably has a major impact on rust-lang#48846

r? @michaelwoerister

cc @eddyb I know you kept telling me to use vectors instead of hash containers... Now I know why.

…nikomatsakis

Allow installing rustfmt without config.extended

This assertion was preventing `./x.py install rustfmt` if attempted
without an "extended" build configuration, but it actually builds and
installs just fine.

…uietMisdreavus

Fix IE11 search

Fixes rust-lang#49263.

r? @QuietMisdreavus

I got this code from: https://stackoverflow.com/a/30867255/7879548

…lexcrichton

Remove getopts leftover from tree

This was attempted but left incomplete in PR rust-lang#42664, where only the toml
file was removed.

cc @alexcrichton

update books for next release

Stabilize the copy_closures and clone_closures features

In addition to the `Fn*` family of traits, closures now implement `Copy` (and similarly `Clone`) if all of the captures do.

Tracking issue: rust-lang#44490