Rollup of 14 pull requests

[kennytm]

Successful merges:

• Use sort_by_cached_key where appropriate #49525 (Use sort_by_cached_key where appropriate)
• Stabilize Option::filter. #49575 (Stabilize Option::filter.)
• in which the non-shorthand patterns lint keeps its own counsel in macros #49614 (in which the non-shorthand patterns lint keeps its own counsel in macros)
• Small nits to make couple of tests pass on mips targets. #49665 (Small nits to make couple of tests pass on mips targets.)
• add regression test for #16223 (NLL): use of collaterally moved value #49781 (add regression test for Incorrect partially moved value error check when pattern matching boxed structures. #16223 (NLL): use of collaterally moved value)
• Properly look for uninhabitedness of variants in niche-filling check #49795 (Properly look for uninhabitedness of variants in niche-filling check)
• Stop emitting color codes on TERM=dumb #49809 (Stop emitting color codes on TERM=dumb)
• Do not uppercase-lint #[no_mangle] statics #49856 (Do not uppercase-lint #[no_mangle] statics)
• fixed typo #49863 (fixed typo)
• Fix "fp" target feature for AArch64 #49857 (Fix "fp" target feature for AArch64)
• Add --enable-debug flag to musl CI build script #49849 (Add --enable-debug flag to musl CI build script)
• proc_macro: Generalize FromIterator impl #49734 (proc_macro: Generalize FromIterator impl)
• Fix ICE with impl Trait #49730 (Fix ICE with impl Trait)
• Replace structurally_resolved_type in casts check. #48270 (Replace structurally_resolved_type in casts check.)

Failed merges:

[TimNN]

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.

[01:27:17] thread '<unnamed>' panicked at 'isize::MAX + 1 should trigger an OOM!', libstd/collections/hash/map.rs:3640:22
---
[01:27:30] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "test" "--target" "x86_64-unknown-linux-musl" "-j" "4" "--release" "--locked" "--color" "always" "--features" "panic-unwind jemalloc backtrace" "--manifest-path" "/checkout/src/libstd/Cargo.toml" "-p" "std" "--"
---
$ ls -lat $HOME/Library/Logs/DiagnosticReports/
ls: cannot access /home/travis/Library/Logs/DiagnosticReports/: No such file or directory
travis_time:end:02ede5a2:start=1523473051582066794,finish=1523473051595728633,duration=13661839
travis_fold:end:after_failure.2
travis_fold:start:after_failure.3
travis_time:start:04ee99b9
$ find $HOME/Library/Logs/DiagnosticReports -type f -name '*.crash' -not -name '*.stage2-*.crash' -not -name 'com.apple.CoreSimulator.CoreSimulatorService-*.crash' -exec printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" {} \; -exec head -750 {} \; -exec echo travis_fold":"end:crashlog \; || true
find: `/home/travis/Library/Logs/DiagnosticReports': No such file or directory
travis_time:end:04ee99b9:start=1523473051602017630,finish=1523473051608247498,duration=6229868
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:1029a65e
$ dmesg | grep -i kill
[   10.878622] init: failsafe main process (1093) killed by TERM signal

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)

[TimNN]

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.

[01:27:17] thread '<unnamed>' panicked at 'isize::MAX + 1 should trigger an OOM!', libstd/collections/hash/map.rs:3640:22
---
[01:27:30] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "test" "--target" "x86_64-unknown-linux-musl" "-j" "4" "--release" "--locked" "--color" "always" "--features" "panic-unwind jemalloc backtrace" "--manifest-path" "/checkout/src/libstd/Cargo.toml" "-p" "std" "--"
---
$ ls -lat $HOME/Library/Logs/DiagnosticReports/
ls: cannot access /home/travis/Library/Logs/DiagnosticReports/: No such file or directory
travis_time:end:02ede5a2:start=1523473051582066794,finish=1523473051595728633,duration=13661839
travis_fold:end:after_failure.2
travis_fold:start:after_failure.3
travis_time:start:04ee99b9
$ find $HOME/Library/Logs/DiagnosticReports -type f -name '*.crash' -not -name '*.stage2-*.crash' -not -name 'com.apple.CoreSimulator.CoreSimulatorService-*.crash' -exec printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" {} \; -exec head -750 {} \; -exec echo travis_fold":"end:crashlog \; || true
find: `/home/travis/Library/Logs/DiagnosticReports': No such file or directory
travis_time:end:04ee99b9:start=1523473051602017630,finish=1523473051608247498,duration=6229868
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:1029a65e
$ dmesg | grep -i kill
[   10.878622] init: failsafe main process (1093) killed by TERM signal

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)

[kennytm]

@bors r+

Removed #49850 (This is the only PR which touches allocation stuff).
Added #49849.

[bors]

📌 Commit aebb2a3 has been approved by kennytm

[kennytm]

@bors r+

Removed #49698 (expecting Cargo.lock conflict).
Added #49734, #49730, #48270

[bors]

📌 Commit 9f6e5ae has been approved by kennytm

[bors]

⌛ Testing commit 9f6e5ae with merge e28ef22...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: kennytm
Pushing e28ef22 to master...