message: Downgrade libc for Rust 1.8 CI
diff: language: rust
  rust:
  - - 1.8.0
  - 1.15.0
  - beta
  - nightly
  +matrix:
  + include:
  + - rust: 1.8.0
  + before_script:
  + # libc 0.2.34 started using #[deprecated]
  + - cargo generate-lockfile
  + - cargo update --package libc --precise 0.2.33
  sudo: false
  script:
  - cargo build --verbose
  