Update books for Rust 2018

[steveklabnik]

This PR:

1. updates all of the books
   • I don't know if @gankro has further plans for the nomicon or not
2. updates the build process because TRPL is only distributing one edition now
3. fixes up the stdlib links

I think that this passes but it's 3:20 am and so I'm sending it in and will fix up anything i missed in the morning.

/cc @alexcrichton for the big beta backport

[rust-highfive]

r? @alexcrichton

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[rust-highfive]

⚠️ Warning ⚠️

• These commits modify submodules.

[alexcrichton]

@bors: r+ p=1

[bors]

📌 Commit 6ce68bb9767ea24a35bcd3dcc24ab893c05ea58a has been approved by alexcrichton

[rust-highfive]

The job x86_64-gnu-llvm-5.0 of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

travis_time:end:01857879:start=1542767386853813576,finish=1542767446914347746,duration=60060534170
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#Pull-Requests-and-Security-Restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
Setting environment variables from .travis.yml
$ export IMAGE=x86_64-gnu-llvm-5.0
---
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
  Downloading https://files.pythonhosted.org/packages/ef/cc/d8f288b5b450e59b92c460727012ee002925324bc655255a9945a45ab9ad/awscli-1.16.59-py2.py3-none-any.whl (1.4MB)
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travis_time:start:test_debuginfo
Check compiletest suite=debuginfo mode=debuginfo-both (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)
[01:07:05] 
[01:07:05] running 118 tests
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[01:36:29] travis_fold:end:stage0-linkchecker

[01:36:29] travis_time:end:stage0-linkchecker:start=1542773243168977343,finish=1542773245517772138,duration=2348794795

[01:39:12] std/index.html:10: broken link fragment `#use-to-bring-paths-into-scope` pointing to `book/ch07-02-modules-and-use-to-control-scope-and-privacy.html`

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[alexcrichton]

@bors: r-

[steveklabnik]

This should be fixed, let's see what travis says, and then I'll r+

[steveklabnik]

@bors r=alexcrichton

[bors]

📌 Commit d7b3f5c has been approved by alexcrichton

[bors]

⌛ Testing commit d7b3f5c with merge 910ec6d...

[Gankra]

yeah the nomicon is gonna suuuuper use all the time it has before the edition officially ships

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing 910ec6d to master...

[rust-highfive]

📣 Toolstate changed by #56118!

Tested on commit 910ec6d.
Direct link to PR: #56118

🎉 nomicon on windows: test-fail → test-pass (cc @frewsxcv @gankro, @rust-lang/infra).
🎉 nomicon on linux: test-fail → test-pass (cc @frewsxcv @gankro, @rust-lang/infra).

[Gankra]

HOW

[steveklabnik]

wait what is that