Rollup of 5 pull requests

[Centril]

Successful merges:

• Simplify ConstValue::ScalarPair #57442 (Simplify ConstValue::ScalarPair)
• Clean up and fix a bug in query plumbing #57480 (Clean up and fix a bug in query plumbing)
• provide suggestion for invalid boolean cast #57481 (provide suggestion for invalid boolean cast)
• Modify some parser diagnostics to continue evaluating beyond the parser #57540 (Modify some parser diagnostics to continue evaluating beyond the parser)
• Querify local plugin_registrar_fn and proc_macro_decls_static #57570 (Querify local plugin_registrar_fn and proc_macro_decls_static)

Failed merges:

r? @ghost

[Centril]

@bors r+ p=5

[bors]

📌 Commit 9654f5ed0b18ab1644fd27636cfbe5ec996ac910 has been approved by Centril

[bors]

⌛ Testing commit 9654f5ed0b18ab1644fd27636cfbe5ec996ac910 with merge 7e8317110fba18e6dd06223682dcb555a5d9664c...

[bors]

💔 Test failed - checks-travis

[rust-highfive]

The job x86_64-gnu-tools 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:2d83c37c:start=1547490145779454166,finish=1547490145793304662,duration=13850496
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:105ec2b6
$ 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:06fff8c1
travis_time:start:06fff8c1
$ 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:099e4b70
$ 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)

[Xanewok]

[01:34:00] The state of "clippy-driver" has changed from "test-pass" to "build-fail"
[01:34:00] The state of "rls" has changed from "test-pass" to "build-fail"
[01:34:00] The state of "clippy-driver" has regressed from "test-pass" to "build-fail"
[01:34:00] The state of "rls" has regressed from "test-pass" to "build-fail"

no variant named `ScalarPair` found for type `rustc::mir::interpret::ConstValue<'_>` in the current scope

Clippy build fails due to #57442.

[Xanewok]

cc @oli-obk if we're supposed to land this before the release now

[oli-obk]

I think just removing #57442 would be the most sensible choice. There's no harm in letting it bake another 6 weeks

[Centril]

Removed in #57607.