rls tests hang on travis

[matthiaskrgr]

happen after updating rls from c9d25b6 to 53c0770 in rust-lang/rust#57932

[01:49:50] 
[01:49:50] running 4 tests
[01:49:50] test test_tooltip_std ... ignored
[01:49:50] test test_tooltip_std_racer ... ignored
[01:50:50] test test_tooltip ... test test_tooltip has been running for over 60 seconds
[01:50:50] test test_tooltip_racer ... test test_tooltip_racer has been running for over 60 seconds
No output has been received in the last 30m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received
The build has been terminated

rust-lang/rust#57932 (comment)

[matthiaskrgr]

So far I was not able to reproduce this locally, trying with debug-assertions now...

[matthiaskrgr]

No success with this either :/

[h-michael]

I see this issue at night(19:00 UTC+09:00).

[h-michael]

@matthiaskrgr
Does CI passed for now?

[mati865]

@h-michael RLS was excluded from PR in order to unbreak Clippy.

[h-michael]

I'll fix this issue after fixing rls build.