[beta] Rollup backports

[pietroalbini]

Rolled up:

• [beta] adjust deprecation date of mem::uninitialized [beta] adjust deprecation date of mem::uninitialized #61160

Cherry-picked:

• Fix ICE with inconsistent macro matchers Fix ICE with inconsistent macro matchers #61046
• Revert "Add implementations of last in terms of next_back on a bunch of DoubleEndedIterators." Revert "Add implementations of last in terms of next_back on a bunch of DoubleEndedIterators." #61057
• debuginfo: Revert to old/more verbose behavior for -Cdebuginfo=1 debuginfo: Revert to old/more verbose behavior for -Cdebuginfo=1 #61007

r? @ghost

[pietroalbini]

@bors r+ p=20

[bors]

📌 Commit 242de1cbc8ed092631b0c2931005e8236e7e9b82 has been approved by pietroalbini

[pietroalbini]

@bors r-

A PR had wrong labels, I'll add it.

[ehuss]

I don't think #61110 should be included without #61098. I suspect it won't pass tests without it.

[pietroalbini]

@ehuss that's a really good point.

Removed #61110, added #61007.

@bors r+ p=20

[bors]

📌 Commit 4f22a66 has been approved by pietroalbini

[bors]

⌛ Testing commit 4f22a66 with merge c3ffeea353cef7cab8ed31a9f55de31e63a892ac...

[bors]

💔 Test failed - status-appveyor

[ehuss]

I have filed rust-lang/rls#1466 for the flakey rls error since I've personally seen it happen multiple times.

[pietroalbini]

@bors retry

[bors]

⌛ Testing commit 4f22a66 with merge 70d3e4e53d0b1389050083735af5123778296fc2...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job arm-android 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.

[01:40:22] test string::test_str_clear ... ok
[01:40:22] test string::test_str_truncate ... ok
[01:40:22] test string::test_str_truncate_invalid_len ... ok
[01:40:22] test string::test_str_truncate_split_codepoint ... ok
[01:40:22] died due to signal 11
[01:40:22] 
[01:40:22] 
[01:40:22] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "test" "--target" "arm-linux-androideabi" "-j" "4" "--release" "--locked" "--color" "always" "--features" "panic-unwind backtrace" "--manifest-path" "/checkout/src/libstd/Cargo.toml" "-p" "alloc" "--"
[01:40:22] expected success, got: exit code: 3
---
travis_time:end:0623e032:start=1559132479719264653,finish=1559132479733880604,duration=14615951
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:000789b0
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:247157b5
travis_time:start:247157b5
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:0d84b2a4
$ dmesg | grep -i kill

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)

[pietroalbini]

@bors retry

Android signal 11.

[bors]

⌛ Testing commit 4f22a66 with merge 0ff088c...

[bors]

☀️ Test successful - checks-travis, status-appveyor
Approved by: pietroalbini
Pushing 0ff088c to beta...