Remove one more newline from the welcome message

2 jobs for master in 2 seconds (queued for 3 seconds)
Name Stage Failure
test Test
   7f8d9de..3c86300  master     -> origin/master
Checking out 3c86300f as master...
Skipping Git submodules setup
Checking cache for default...
time="2020-04-05T15:26:10+08:00" level=error msg="Docker executor: prebuilt image helpers will be loaded from /var/lib/gitlab-runner."
Successfully extracted cache
$ rustc --version
bash: line 78: rustc: command not found
ERROR: Job failed: exit status 1