Rollup of 6 pull requests

[Centril]

Successful merges:

• Pass LLVM linker flags to librustc_llvm build #61704 (Pass LLVM linker flags to librustc_llvm build)
• prepare for Intptrcast model #61781 (prepare for Intptrcast model)
• rustbuild: include llvm-libunwind in dist tarball #61829 (rustbuild: include llvm-libunwind in dist tarball)
• update miri #61832 (update miri)
• Remove redundant clone()s #61866 (Remove redundant clone()s)
• Cleanup some new active feature gates #61869 (Cleanup some new active feature gates)

Failed merges:

r? @ghost

[Centril]

@bors r+ p=6 rollup=never

[bors]

📌 Commit 1815e43 has been approved by Centril

[bors]

⌛ Testing commit 1815e43 with merge 2c90aa43052f13a80f27965e9fb2a879fe8ec821...

[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.

[01:48:12] error: tests/compile-fail/null_pointer_deref.rs:2: expected error not found: invalid use of NULL pointer
[01:48:12] 
[01:48:12] error: 1 unexpected errors found, 1 expected errors not found
[01:48:12] status: exit code: 1
[01:48:12] command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-tools-bin/miri" "tests/compile-fail/null_pointer_deref.rs" "-L" "/tmp/compiletestSyF7iA" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-C" "prefer-dynamic" "-o" "/tmp/compiletestSyF7iA/null_pointer_deref.stage-id" "-Dwarnings" "-Dunused" "--edition" "2018" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2" "-L" "/tmp/compiletestSyF7iA/null_pointer_deref.stage-id.aux" "-A" "unused"
[01:48:12]     Error {
[01:48:12]         line_num: 2,
[01:48:12]         kind: Some(
[01:48:12]             Error,
[01:48:12]             Error,
[01:48:12]         ),
[01:48:12]         msg: "2:27: 2:44: Miri evaluation error: a memory access tried to interpret some bytes as a pointer [E0080]",
[01:48:12] ]
[01:48:12] 
[01:48:12] not found errors (from test file): [
[01:48:12]     Error {
---
[01:48:13] error: tests/compile-fail/null_pointer_write.rs:2: expected error not found: invalid use of NULL pointer
[01:48:13] 
[01:48:13] error: 1 unexpected errors found, 1 expected errors not found
[01:48:13] status: exit code: 1
[01:48:13] command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-tools-bin/miri" "tests/compile-fail/null_pointer_write.rs" "-L" "/tmp/compiletestSyF7iA" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "-C" "prefer-dynamic" "-o" "/tmp/compiletestSyF7iA/null_pointer_write.stage-id" "-Dwarnings" "-Dunused" "--edition" "2018" "--sysroot" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2" "-L" "/tmp/compiletestSyF7iA/null_pointer_write.stage-id.aux" "-A" "unused"
[01:48:13]     Error {
[01:48:13]         line_num: 2,
[01:48:13]         kind: Some(
[01:48:13]             Error,
[01:48:13]             Error,
[01:48:13]         ),
[01:48:13]         msg: "2:14: 2:42: Miri evaluation error: a memory access tried to interpret some bytes as a pointer [E0080]",
[01:48:13] ]
[01:48:13] 
[01:48:13] not found errors (from test file): [
[01:48:13]     Error {
---
[01:48:19] This PR updated 'src/tools/miri', verifying if status is 'test-pass'...
[01:48:19] 
[01:48:19] ⚠️ We detected that this PR updated 'miri', but its tests failed.
[01:48:19] 
[01:48:19] If you do intend to update 'miri', please check the error messages above and
[01:48:19] commit another update.
[01:48:19] 
[01:48:19] If you do NOT intend to update 'miri', please ensure you did not accidentally
[01:48:19] change the submodule at 'src/tools/miri'. You may ask your reviewer for the
[01:48:19] proper steps.
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 3.
travis_time:start:11b829c6
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Sun Jun 16 04:00:14 UTC 2019
---
travis_time:end:0569cf4f:start=1560657616534001509,finish=1560657616541343882,duration=7342373
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:09528306
$ 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:22530e10
travis_time:start:22530e10
$ 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:21afa058
$ dmesg | grep -i kill

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