Rustfmt is not vendored correctly

[bugabinga]

rust/src/Cargo.toml

Line 67 in 860d169

[patch.crates-io]

I think this line should be [patch."https://github.com/rust-lang-nursery/rustfmt"].
RLS switched its depenence on rustfmt to a git dependency some time ago.

This came up while looking into semarie/build-rust#9.

[Mark-Simulacrum]

cc @alexcrichton

[semarie]

@Mark-Simulacrum it should come from this update of RLS #51407 which reached beta branch.

The problem is similar to #42719 (same problem but for a different rust release).
It is a stable-from-beta regression.

[semarie]

Full log with a build with Rust 1.27.0 :

Mon Jul  2 19:47:22 CEST 2018: info: building: 1.28.0-beta.6 (915ac6602 2018-06-30)
Mon Jul  2 19:47:22 CEST 2018: info: required stage0:
	date: 2018-06-21
	rustc: 1.27.0
	cargo: 0.28.0
Mon Jul  2 19:47:22 CEST 2018: info: rustc -vV
	rustc 1.27.0
	binary: rustc
	commit-hash: unknown
	commit-date: unknown
	host: x86_64-unknown-openbsd
	release: 1.27.0
	LLVM version: 6.0
Mon Jul  2 19:47:22 CEST 2018: info: cargo -vV
	cargo 1.27.0
	release: 1.27.0
Mon Jul  2 19:47:22 CEST 2018: starting rustbuild dist --jobs=4
running: /usr/local/bin/cargo build --manifest-path /data/semarie/build-rust/build_dir/rustc-beta-src/src/bootstrap/Cargo.toml --frozen
    Updating git repository `https://github.com/rust-lang-nursery/rustfmt`
error: failed to load source for a dependency on `rustfmt-nightly`

Caused by:
  Unable to update https://github.com/rust-lang-nursery/rustfmt?rev=f3906267#f3906267

Caused by:
  failed to fetch into /data/semarie/build-rust/install_dir/crates/git/db/rustfmt-5390e0ead582d971

Caused by:
  attempting to update a git repository, but --frozen was specified
Traceback (most recent call last):
  File "/data/semarie/build-rust/build_dir/rustc-beta-src/x.py", line 20, in <module>
    bootstrap.main()
  File "/data/semarie/build-rust/build_dir/rustc-beta-src/src/bootstrap/bootstrap.py", line 827, in main
    bootstrap(help_triggered)
  File "/data/semarie/build-rust/build_dir/rustc-beta-src/src/bootstrap/bootstrap.py", line 806, in bootstrap
    build.build_bootstrap()
  File "/data/semarie/build-rust/build_dir/rustc-beta-src/src/bootstrap/bootstrap.py", line 633, in build_bootstrap
    run(args, env=env, verbose=self.verbose)
  File "/data/semarie/build-rust/build_dir/rustc-beta-src/src/bootstrap/bootstrap.py", line 148, in run
    raise RuntimeError(err)
RuntimeError: failed to run: /usr/local/bin/cargo build --manifest-path /data/semarie/build-rust/build_dir/rustc-beta-src/src/bootstrap/Cargo.toml --frozen

[Mark-Simulacrum]

If someone wants to prepare a patch for this that would be great; otherwise we'll probably discuss this during next week's infra meeting and confirm that the suggested fix is the right one.

[Mark-Simulacrum]

We discussed this in the infrastructure meeting and the general conclusion was that @alexcrichton is probably not going to fix this themselves but that a fix is likely to be reviewed. @semarie or @bugabinga either of you interested in writing up a PR?