Rollup of 16 pull requests

[Centril]

Successful merges:

• Consider references and unions potentially inhabited during privacy-respecting inhabitedness checks #56110 (Consider references and unions potentially inhabited during privacy-respecting inhabitedness checks)
• Use a SmallVec within _match::Matrix. #56269 (Use a SmallVec within _match::Matrix.)
• update miri #56305 (update miri)
• Stacked borrows: Support 2 phase borrows #56307 (Stacked borrows: Support 2 phase borrows)
• Enable -mergefunc-use-aliases #56358 (Enable -mergefunc-use-aliases)
• Stabilize self_in_typedefs feature #56366 (Stabilize self_in_typedefs feature)
• Refer to the second borrow as the "second borrow" in E0501.rs #56372 (Refer to the second borrow as the "second borrow" in E0501.rs)
• Deal with EINTR in net timeout tests #56394 (Deal with EINTR in net timeout tests)
• Stabilize dbg!(...) #56395 (Stabilize dbg!(...))
• Move VecDeque::resize_with out of the impl<T:Clone> block #56401 (Move VecDeque::resize_with out of the impl<T:Clone> block)
• Improve the unstable book example for #[marker] trait #56402 (Improve the unstable book example for #[marker] trait)
• Update tracking issue for extern_crate_self #56412 (Update tracking issue for extern_crate_self)
• Remove unneeded body class selector #56416 (Remove unneeded body class selector)
• Fix failing tidy (line endings on Windows) #56418 (Fix failing tidy (line endings on Windows))
• Remove some uses of try! #56419 (Remove some uses of try!)
• Mention raw-ident syntax #56424 (Mention raw-ident syntax)

Failed merges:

r? @ghost

[Centril]

@bors r+ p=10

[bors]

📌 Commit 71a5f5a0973c092a809fe139b1a8140b3330ccfe has been approved by Centril

[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:07014da4:start=1543721947805530572,finish=1543722001731649025,duration=53926118453
$ 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
---
[00:05:13]    Compiling rustc_errors v0.0.0 (/checkout/src/librustc_errors)
[00:06:30]    Compiling syntax_ext v0.0.0 (/checkout/src/libsyntax_ext)
[00:11:57]    Compiling rustc_mir v0.0.0 (/checkout/src/librustc_mir)
[00:11:57]    Compiling rustc_typeck v0.0.0 (/checkout/src/librustc_typeck)
[00:12:07] error[E0063]: missing field `two_phase` in initializer of `rustc::mir::StatementKind<'_>`
[00:12:07]     |
[00:12:07]     |
[00:12:07] 232 |                 kind: StatementKind::Retag { fn_entry: true, place: dropee_ptr.clone() },
[00:12:07]     |                       ^^^^^^^^^^^^^^^^^^^^ missing `two_phase`
[00:12:11] error: aborting due to previous error
[00:12:11] 
[00:12:11] For more information about this error, try `rustc --explain E0063`.
[00:12:11] error: Could not compile `rustc_mir`.
---
184276 ./obj/build/cache/2018-10-30
153280 ./src/tools/clang
150332 ./obj/build/bootstrap/debug/incremental
134740 ./obj/build/bootstrap/debug/incremental/bootstrap-1plb86h2refwc
134736 ./obj/build/bootstrap/debug/incremental/bootstrap-1plb86h2refwc/s-f77c5egytw-1wv8owa-4qyniat88vxc
134212 ./.git/modules/src
130292 ./obj/build/x86_64-unknown-linux-gnu/stage0-rustc
115356 ./src/llvm/test/CodeGen
107888 ./obj/build/x86_64-unknown-linux-gnu/stage0/lib/rustlib/x86_64-unknown-linux-gnu/codegen-backends

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