eddyb/rust forked from rust-lang/rust

…s and impl methods.

Inspired by rust-lang#27484

- Successful merges: #27464, #27473
- Failed merges:

This removes some of the more casual language.

The only outright goofiness I couldn't bear to remove is "these modules are the bedrock upon which all of Rust is forged, and they have mighty names like `std::slice` and `std::cmp`", which I believe the greatest sentence I have ever created.

Because Markdown.

I found that the book had little information for `loop`s and `loop` label so I've added some.

Because Markdown.

Only `make -j4` takes ~50 mins
`make check` bumps it up to ~1hr 30min

Travis seems more than happy to let this happen. 

Time limits appear to be meaningless.

Similar to the previous PR, it's easy to tell how much your PR definitely builds by checking the current logs or just considering how long it's been building for.

Sorry :/

…the tester.

- Successful merges: #26982, #27305, #27419, #27423, #27426
- Failed merges:

Corrects formatting of bullet-ed sentences and changes 'pervasive use raw pointers' to 'pervasive use of raw pointers'.

part of #24407 

I'm not sure whether I should be trying to explain the general rule in the E0210 explanation or just point people to the RFC. However, if we go with the latter option I think that the RFC will need to be revised slightly, since it is not quite as gentle as I would like.

Also, the link to RFC 1023 is not the correct one (it should be https://github.com/rust-lang/rfcs/blob/master/text/1023-rebalancing-coherence.md), but the correct one is too long. I'm aware of @michaelsproul's PR rust-lang#26290 from awhile back, but it doesn't seem to be working. Has there not been a new snapshot yet?

@alexcrichton please upload the FreeBSD 32-bit snapshot file when landing this patch:
https://github.com/dhuseby/rust-manual-snapshots/raw/master/rust-stage0-2015-07-26-a5c12f4-freebsd-i386-2fee22adec101e2f952a5548fd1437ce1bd8d26f.tar.bz2

…ichton

@alexcrichton fixes the build bot failures due to unused imports being treated as errors.

r? @alexcrichton

Fix #27255.