servo: Merge #18193 - Move fast checks into earlier Travis task (from servo:jdm-patch-2); r=SimonSapin

This allows quicker feedback about whether the manifest needs updating; otherwise it has to wait until all builds and tests are complete.

Source-Repo: https://github.com/servo/servo
Source-Revision: 9c338a29294dc8ebf2c75dcdc3f2e67caef48ebe

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : a10a208178ab13bf1a2e8ffe80f8bf9adee66d79

servo/.travis.yml

@@ -7,6 +7,8 @@ matrix:
       script:
          - ./mach test-tidy --no-progress --all
          - ./mach test-tidy --no-progress --self-test
+         - bash etc/ci/check_no_panic.sh
+         - bash etc/ci/manifest_changed.sh
       cache: false
     - sudo: 9000
       dist: trusty
@@ -17,9 +19,7 @@ matrix:
          - ./mach clean
          - ./mach build-geckolib
          - ./mach test-stylo
-         - bash etc/ci/check_no_panic.sh
          - bash etc/ci/lockfile_changed.sh
-         - bash etc/ci/manifest_changed.sh
       cache:
         directories:
           - .cargo