Previously it looked a little odd: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/enum.BorrowKind.html#variant.UniqueImmBorrow

Delimiters cannot appear as isolated tokens in a token stream

Split out from #76130

This tests our handling of combining derives, derive helper
attributes, attribute macros, and `cfg`/`cfg_attr`

…Dylan-DPC

Add missing code examples on HashMap types

r? @Dylan-DPC

Enable const propagation into operands at mir_opt_level=2

Feature was added in #74507 but gated with `mir_opt_level>=3` because of compile time regressions. Let's see whether the LLVM 11 update solves that.

As the [perf results](#77107 (comment)) show, enabling this optimization results in a lot less regression as before.

cc @oli-obk

r? @ghost

Update cargo

7 commits in 8777a6b1e8834899f51b7e09cc9b8d85b2417110..05c611ae3c4255b7a2bcf4fcfa65b20286a07839
2020-09-15 19:11:03 +0000 to 2020-09-23 23:10:38 +0000
- --workspace flag for locate-project to find the workspace root (rust-lang/cargo#8712)
- Remove some badges documentation. (rust-lang/cargo#8727)
- Add plain message format for locate-project (rust-lang/cargo#8707)
- Add a term option to configure the progress bar (rust-lang/cargo#8165)
- Replace d_as_f64 with as_secs_f64 (rust-lang/cargo#8721)
- Add cross check to filters_target test. (rust-lang/cargo#8713)
- Add test for whitespace behavior in env flags. (rust-lang/cargo#8706)

…ign-test, r=nagisa

Fix FIXME in core::num test: Check sign of zero in min/max tests.

r? nagisa

@rustbot modify labels: +C-cleanup

Rust vec bench import specific rand::RngCore

Using `RngCore` import for side effects is clearer than `*` which may bring it unnecessary more stuff than needed, it is also more explicit doing so.

@pickfire change `LEN = 16384` (and pos) and `once` instead of `[0].iter()` after this.

@rustbot modify labels: +C-cleanup +A-testsuite

Late link args order

MSYS2 changed how winpthreads is built and as the result it now depends on more mingw-w64 libraries.

This PR affects only MinGW targets since nobody else is using `late_link_args_{dynamic,static}`. Now the order is similar to how it used to be before #67502.

Fix documentation highlighting in ty::BorrowKind

Previously it looked a little odd: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/enum.BorrowKind.html#variant.UniqueImmBorrow

Noticed this while reviewing rust-lang/rustc-dev-guide#894.

Move helper function for `missing_const_for_fn` out of rustc to clippy

cc @rust-lang/clippy @ecstatic-morse #76618

r? @Manishearth

I also removed all support for suggesting a function could be `const fn` when that would require feature gates to actually work.

This means we'll now have to maintain this ourselves in clippy, but that's how most lints work anyway, so...

pretty-print-reparse hack: Rename some variables for clarity

This will also make it easier to make the comparisons asymmetric.

Also one impossible case is removed.

r? @Aaron1011

Test more attributes in test issue-75930-derive-cfg.rs

Split out from #76130

This tests our handling of combining derives, derive helper
attributes, attribute macros, and `cfg`/`cfg_attr`