Trying to shrink_to greater than capacity should be no-op
Per the discussion in https://github.com/rust-lang/rust/issues/56431, `shrink_to` shouldn't panic if you try to make a vector shrink to a capacity greater than its current capacity.
Remove CACHE_KEY global
We realized in https://github.com/rust-lang/rust/pull/80914 that the cache handling (through a global) needed to be updated to make it much easier to handle.
r? `@jyn514`
Fixes#76267
When there is a single applicable method candidate, but its trait bounds
are not satisfied, we avoid saying that the method is "not found".
Insted, we update the error message to directly mention which bounds are
not satisfied, rather than mentioning them in a note.
Make weak item traversal deterministic
Fix#81296.
(No test added. The relevant test *is* ui/panic-handler/weak-lang-item.rs, and this change should make it less flaky.)
Refine "remove semicolon" suggestion in trait selection
Don't suggest it if the last statement doesn't have a semicolon
Fixes#81098
See also #54771 for why this suggestion was added
tidy: Some code cleanup.
This is just some cleanup that shouldn't have any change in behavior. (See commit messages for more details.)
* Remove cargo check. This test wasn't working, and is no longer valid.
* Remove edition filter exceptions. They are no longer necessary.
* Remove unnecessary trailing semicolon. Otherwise the warning will prevent tidy from building after the beta branch.
Update books
## nomicon
7 commits in a8584998eacdea7106a1dfafcbf6c1c06fcdf925..bbf06ad39d1f45654047e9596b750cc6e6d1b693
2021-01-06 12:49:49 -0500 to 2021-01-22 07:07:31 -0800
- Fix alloc link in exotic-sizes for local docs (rust-lang-nursery/nomicon#255)
- Remove TODO
- Fix small punctuation error
- Arc revisions (Clone atomic explanation) (pt2/3(+?))
- Fix Arc Clone
- Arc revisions (pt1/2(+?))
- Simple Arc implementation (without Weak refs)
## reference
5 commits in 50af691f838937c300b47812d0507c6d88c14f97..f02b09eb6e8af340ad1256a54adb7aae2ff3163e
2021-01-12 21:19:20 -0800 to 2021-01-22 01:53:02 -0800
- Fix missing space (rust-lang-nursery/reference#941)
- Start documenting name resolution. (rust-lang-nursery/reference#937)
- Fix plural and delete spurious words in comparison ops (rust-lang-nursery/reference#932)
- Document execution order (rust-lang-nursery/reference#888)
- Compound operator expressions (rust-lang-nursery/reference#915)
## book
3 commits in ac57a0ddd23d173b26731ccf939f3ba729753275..e724bd826580ff95df48a8533af7dec1080693d4
2021-01-09 14:18:45 -0500 to 2021-01-20 08:19:49 -0600
- Fixesrust-lang/book#2417. Get the index from user input instead of a const. (rust-lang/book#2566)
- Turn off the playground in a bunch more lib.rs inclusions (rust-lang/book#2569)
- Merge pull request rust-lang/book#2567 from rust-lang/rust-1.49
## rust-by-example
1 commits in 03e23af01f0b4f83a3a513da280e1ca92587f2ec..f633769acef68574427a6fae6c06f13bc2199573
2021-01-09 10:20:28 -0300 to 2021-01-13 20:58:25 -0300
- Fixed styling on closure example (rust-lang/rust-by-example#1405)
rustdoc: Document CommonMark extensions.
This updates the rustdoc book to include some documentation on the CommonMark extensions that rustdoc supports.
