Rollup of 26 pull requests

[frewsxcv]

• Successful merges: Update libc to 0.2.21 #40317, Reword the non-dropping of src for ptr::write{,_unaligned} #40387, Add test for issue #29595 #40433, Add basic documentation/examples for six unstable features. #40452, Remove function invokation parens from documentation links. #40456, Update usages of 'OSX' (and other old names) to 'macOS'. #40457, some style fixes #40463, Remove doc about highlighting code in other languages #40301 #40466, Updating README.md to point to the correct doc location #40467, Target builds for older macOS #40482, fix format grammar #40495, Using X headings #39850 #40496, Fix sidebar not extending to the bottom of the page #40497, Corrected very minor documentation detail about Unicode and Japanese #40499, Point out correct turbofish usage on Foo<Bar<Baz>> #40500, std: remove a workaround for privacy limitations #40503, A few improvements to the core::hash top-level docs. #40505, travis: Ensure cargo links libcurl statically #40507, .gitmodules: use official URLs w/o redirect #40512, Link core::slice to std::slice #40520, Make docs required again #40526, Fix documentation for Vec::dedup_by. #40536, Library stabilizations for 1.17 #40538, Removes Default for Box<Path>. #40539, rustbuild: Retry downloads of OpenSSL source #40545, add sort_unstable to unstable book #40586
• Failed merges:

[rust-highfive]

Some changes occurred in HTML/CSS.

cc @GuillaumeGomez

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @sfackler (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

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[frewsxcv]

@bors r+ p=10

[bors]

📌 Commit ee03f19 has been approved by frewsxcv

[bors]

⌛ Testing commit ee03f19 with merge 34b2105...

[bors]

💔 Test failed - status-travis

[frewsxcv]

@bors retry

[alexcrichton]

@bors: r-

Oh that looks like a legitimate error:

error[E0308]: mismatched types
--> /checkout/src/libstd/sys_common/net.rs:342:55
|
342 | cvt(unsafe { c::bind(*sock.as_inner(), addrp, len) })?;
| ^^^ expected i32, found u32
error[E0308]: mismatched types
--> /checkout/src/libstd/sys_common/net.rs:433:55
|
433 | cvt(unsafe { c::bind(*sock.as_inner(), addrp, len) })?;
| ^^^ expected i32, found u32
error[E0308]: mismatched types
--> /checkout/src/libstd/sys/unix/ext/net.rs:644:82
|
644 | cvt(libc::bind(*inner.as_inner(), &addr as *const _ as *const _, len))?;
| ^^^ expected i32, found u32
error[E0308]: mismatched types
--> /checkout/src/libstd/sys/unix/ext/net.rs:923:85
|
923 | cvt(libc::bind(*socket.0.as_inner(), &addr as *const _ as *const _, len))?;
| ^^^ expected i32, found u32
error: aborting due to 4 previous errors
error: Could not compile `std`.
To learn more, run the command again with --verbose.

[alexcrichton]

(er didn't mean to close)

[frewsxcv]

Oh I missed that. Maybe I was looking at the wrong machine. Probably that libc bump again.

[alexcrichton]

(agreed to the cause)

[frewsxcv]

I'll open another rollup