The motivation here is to allow rustfmt to recover from parse errors
after failing to parse macros.

distcheck complains that this file references projects not cotnained in the tarball

Make the ./x.py script fail when run with an invalid command, like:

  ./x.py nonsense

This helps in case of chaining multiple runs, eg.:

  ./x.py biuld && ./x.py test

The crate itself is internally referenced by serde_derive.

in particular:

* show how to create an iterator that yields multiple socket addresses
* show more failing scenarios

No need to depend on librustc! All we need is libstd

Closes rust-lang#44140

…turon

libcore: Implement cloned() for Option<&mut T>

None

…, r=arielb1

Add reset_err_count() to errors::Handler

The motivation here is to allow rustfmt to recover from parse errors after failing to parse macros (cc rust-lang/rustfmt#1742).
r? @nrc

…avus

Don't highlight # which does not start an attribute in rustdoc

Currently when we highlight some macros for rustdoc (e.g. `quote!` from https://github.com/dtolnay/quote), we get really bad syntax highlighting, because we assume that every token between a `#` character and the next `]` in the source must be an attribute.

This patch improves that highlighting behavior to instead only highlight after finding the `[` token after the `#` token.

(NOTE: I've only run this patch against https://github.com/nrc/rustdoc-highlight so if it doesn't build on travis that's why - I don't have a recent rustc build on this laptop)

I'm guessing r? @steveklabnik

include Cargo.{toml,lock} in rust-src tarball

The lock file is interesting because e.g. xargo could use it to build libstd against the same dependencies that were used for the main build. More generally speaking, just documenting in this form which exact dependencies should be used IMHO makes lots of sense.

I added the Cargo.toml mostly because having the lock without the toml feels odd. Of course, the toml contains references to paths that don't actually exist in the rust-src tarball. Not sure if that is considered a problem.

…xamples, r=QuietMisdreavus

Rewrite `std::net::ToSocketAddrs` doc examples.

in particular:

* show how to create an iterator that yields multiple socket addresses
* show more failing scenarios

done this as preliminary work while investigating rust-lang#22569

note: i haven't run doc tests on my machine for this, so would be good to confirm CI passes before approving

… r=Mark-Simulacrum

bootstrap: remove unneeded extern crate

The crate itself is internally referenced by serde_derive.

…matsakis

compiletest: Change Config comments to doc comments

I plan to make the same change in compiletest-rs, to have some documentation in [the docs](https://docs.rs/compiletest_rs/0.2.9/compiletest_rs/common/struct.Config.html).

…akis

Fail ./x.py on invalid command

Make the ./x.py script fail when run with an invalid command, like:

```
./x.py nonsense
```

This helps in case of chaining multiple runs, eg.:

```
./x.py biuld && ./x.py test
```

…etMisdreavus

Fix invalid linker position

Fixes rust-lang#44120.

Result isn't "optimal" though because there are spaces at the end of some lines.

Rename the rls component to rls-preview on beta/stable

Background is that we will have automatic renaming with the next rustup release. We'll then rename rls to rls-preview. In the meantime, this ensures beta/stable users will always have rls-preview.

r? @alexcrichton

…r=Mark-Simulacrum

rustbuild: Fix dependencies of build-manifest

No need to depend on librustc! All we need is libstd

Closes rust-lang#44140

Use a byte literal ASCII 0 instead of its decimal value

@SimonSapin noticed this in dtolnay/itoa#8.