language: go
sudo: false
go:
  - 1.7.x
  - 1.8.x
  - 1.9.x
  - 1.10.x
  - 1.11.x
  - 1.12.x
  - tip
matrix:
  allow_failures:
    - go: tip
  fast_finish: true
before_install:
  - go get golang.org/x/tools/cmd/cover
script:
  - go test ./... -race -coverprofile=coverage.txt -covermode=atomic
after_success:
  - bash <(curl -s https://codecov.io/bash)
notifications:
  email: false