travis: fix lint and rst jobs not being run
Travis CI has made `matrix` and `jobs` as a single key:
```
root: both matrix and jobs given, matrix overwrites jobs
```
thus the `jobs` key was ignored.
@@ -12,10 +12,6 @@ python:
- "pypy"
- "pypy3"
-matrix:
- allow_failures:
- - python: "3.9-dev"
-
before_install:
- travis_retry pip install -U pip wheel setuptools
@@ -34,6 +30,9 @@ script:
- make test
jobs:
+ allow_failures:
+ - python: "3.9-dev"
+
include:
- stage: lint
name: "Linting"
