librustc_errors => 2018

[taiki-e]

Transitions librustc_errors to Rust 2018; cc #58099

r? @Centril

[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:0fd86466:start=1549478417503146351,finish=1549478418539391927,duration=1036245576
$ 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
Setting environment variables from .travis.yml
$ export IMAGE=x86_64-gnu-llvm-6.0
---
[00:06:05]    Compiling rustc_errors v0.0.0 (/checkout/src/librustc_errors)
[00:06:06] error: unused extern crate
[00:06:06]   --> src/librustc_errors/lib.rs:13:1
[00:06:06]    |
[00:06:06] 12 | / #[cfg(unix)]
[00:06:06] 13 | | extern crate libc;
[00:06:06]    | | ^^^^^^^^^^^^^^^^^-
[00:06:06]    | |__________________|
[00:06:06]    |
[00:06:06] note: lint level defined here
[00:06:06]   --> src/librustc_errors/lib.rs:10:9
[00:06:06]    |
[00:06:06]    |
[00:06:06] 10 | #![deny(rust_2018_idioms)]
[00:06:06]    |         ^^^^^^^^^^^^^^^^
[00:06:06]    = note: #[deny(unused_extern_crates)] implied by #[deny(rust_2018_idioms)]
[00:06:06] error: aborting due to previous error
[00:06:06] 
[00:06:06] error: Could not compile `rustc_errors`.
[00:06:06] warning: build failed, waiting for other jobs to finish...
[00:06:06] warning: build failed, waiting for other jobs to finish...
[00:06:13] error: build failed
[00:06:13] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "build" "--target" "x86_64-unknown-linux-gnu" "-j" "4" "--release" "--locked" "--color" "always" "--features" "" "--manifest-path" "/checkout/src/rustc/Cargo.toml" "--message-format" "json"
[00:06:13] expected success, got: exit code: 101
[00:06:13] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap build
[00:06:13] Build completed unsuccessfully in 0:02:13
[00:06:13] Makefile:18: recipe for target 'all' failed
[00:06:13] make: *** [all] Error 1
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:0c235912
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Wed Feb  6 18:46:43 UTC 2019
---
travis_time:end:2c7367ab:start=1549478804023765604,finish=1549478804028794965,duration=5029361
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:31b26d78
$ 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:1e4445e0
travis_time:start:1e4445e0
$ 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/as

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)

[Centril]

@bors r+

[bors]

📌 Commit 950fe66 has been approved by Centril