Update miri

[TimDiekmann]

r? @RalfJung

[rust-highfive]

⚠️ Warning ⚠️

• These commits modify submodules.

[rust-highfive]

The job x86_64-gnu-llvm-6.0 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:10c77460:start=1554722388144955011,finish=1554722389028801325,duration=883846314
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#pull-requests-and-security-restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
$ export GCP_CACHE_BUCKET=rust-lang-ci-cache
Setting environment variables from .travis.yml
---
[00:02:04] 
######################################################################## 100.0%
[00:02:05] extracting /checkout/obj/build/cache/2019-03-20/cargo-beta-x86_64-unknown-linux-gnu.tar.gz
[00:02:05]     Updating crates.io index
[00:02:20] error: the lock file /checkout/Cargo.lock needs to be updated but --locked was passed to prevent this
[00:02:20] Build completed unsuccessfully in 0:00:29
[00:02:20] Makefile:69: recipe for target 'prepare' failed
[00:02:20] make: *** [prepare] Error 1
[00:02:21] Command failed. Attempt 2/5:
[00:02:21] Command failed. Attempt 2/5:
[00:02:21]     Updating crates.io index
[00:02:22] error: the lock file /checkout/Cargo.lock needs to be updated but --locked was passed to prevent this
[00:02:22] Build completed unsuccessfully in 0:00:00
[00:02:22] make: *** [prepare] Error 1
[00:02:22] Makefile:69: recipe for target 'prepare' failed
[00:02:24] Command failed. Attempt 3/5:
[00:02:24] Command failed. Attempt 3/5:
[00:02:24]     Updating crates.io index
[00:02:25] error: the lock file /checkout/Cargo.lock needs to be updated but --locked was passed to prevent this
[00:02:25] Build completed unsuccessfully in 0:00:00
[00:02:25] Makefile:69: recipe for target 'prepare' failed
[00:02:25] make: *** [prepare] Error 1
[00:02:28] Command failed. Attempt 4/5:
[00:02:28] Command failed. Attempt 4/5:
[00:02:28]     Updating crates.io index
[00:02:28] error: the lock file /checkout/Cargo.lock needs to be updated but --locked was passed to prevent this
[00:02:28] Build completed unsuccessfully in 0:00:00
[00:02:28] Makefile:69: recipe for target 'prepare' failed
[00:02:28] make: *** [prepare] Error 1
[00:02:32] Command failed. Attempt 5/5:
[00:02:32] Command failed. Attempt 5/5:
[00:02:32]     Updating crates.io index
[00:02:33] error: the lock file /checkout/Cargo.lock needs to be updated but --locked was passed to prevent this
[00:02:33] Build completed unsuccessfully in 0:00:00
[00:02:33] make: *** [prepare] Error 1
[00:02:33] Makefile:69: recipe for target 'prepare' failed
[00:02:33] The command has failed after 5 attempts.
---
travis_time:end:0408bebc:start=1554722553656117906,finish=1554722553662580743,duration=6462837
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:0513ca3b
$ 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:086308e8
travis_time:start:086308e8
$ 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:15f4b9c3
$ 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)

[RalfJung]

To update the lockfile, please run x.py locally (without further arguments) and then amend the commit.

[RalfJung]

Also this overlaps with #59783, probably best to wait until that lands.

[RalfJung]

Please make this entire PR one commit with message "update miri"; that is the trigger for Travis in this PR to test if Miri still passes the test suite (this is why I explicitly said to amend above).

[TimDiekmann]

I'll wait until #59783 lands and create a new commit if needed.

[RalfJung]

Closing because this is included in #59810