Deny bare trait objects in src/librustc_errors

[ljedrz]

Enforce #![deny(bare_trait_objects)] in src/librustc_errors.

[rust-highfive]

r? @varkor

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[rust-highfive]

The job x86_64-gnu-llvm-5.0 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.

[00:04:00] travis_fold:start:tidy
travis_time:start:tidy
tidy check
[00:04:00] tidy error: /checkout/src/librustc_errors/lib.rs:342: line longer than 100 chars
[00:04:02] some tidy checks failed
[00:04:02] [00:04:02] [00:04:02] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/tidy" "/checkout/src" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "--no-vendor" "--quiet"
[00:04:02] [00:04:02] [00:04:02] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
[00:04:02] Build completed unsuccessfully in 0:00:50
[00:04:02] Build completed unsuccessfully in 0:00:50
[00:04:02] make: *** [tidy] Error 1
[00:04:02] Makefile:79: recipe for target 'tidy' failed
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:21971a0f
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
---
travis_time:end:01eccd38:start=1531381193036207499,finish=1531381193043976366,duration=7768867
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:1b4f1f70
$ head -30 ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
head: cannot open ‘./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers’ for reading: No such file or directory
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:0a1774d3
$ 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)

[varkor]

Can you squash these two commits? Everything else looks good, thanks!

[ljedrz]

@varkor I'm all for it, though my git-foo is not too advanced yet; can you please check if I did it correctly? If it's ok, I'll do the same with the other PR you asked to squash.

[varkor]

@ljedrz: when you've squashed your commits, you should just see 1 commit as part of the GitHub pull request. You've done something with merging instead. This article walks through it. In your case, you should be able to do something like:

git rebase -i HEAD~4

and then change pick to squash for the last 3 commits.

[ljedrz]

I think I got this now, thanks!

[varkor]

Great, thanks!

@bors r+ rollup

[bors]

📌 Commit 0339244 has been approved by varkor