CI: Lock Ubuntu 18.04 for now
@@ -9,16 +9,16 @@ jobs:
strategy:
fail-fast: false
matrix:
- os: [ubuntu-latest]
+ os: [ubuntu-18.04]
mode: [tests]
python:
- "2.7"
- "3.5"
include:
- - os: ubuntu-latest
+ - os: ubuntu-18.04
mode: coverage
python: "3.8"
- - os: ubuntu-latest
+ - os: ubuntu-18.04
mode: checks
python: "3.8"
runs-on: ${{ matrix.os }}
