test: remove support for old and stable targets
@@ -3,13 +3,6 @@ language: rust
cache: cargo
rust:
- nightly
- - nightly-2018-06-19
- - beta
- - stable
- - 1.20.0
-matrix:
- allow_failures:
- - rust: nightly
before_script:
- |
pip install git+git://github.com/kbknapp/travis-cargo.git --user &&
