message: MAINT: Fix testing on Rust 1.12 using cuviper's trick again
  As seen in rayon and itertools
diff: @@ -3,8 +3,15 @@ sudo: false
  matrix:
  include:
  - rust: 1.12.0
  + before_script:
  + # rand 0.4.2 requires rust 1.15, and rand-0.3.22 requires rand-0.4 :/
  + # manually hacking the lockfile due to the limitations of cargo#2773
  + - cargo generate-lockfile
  + - sed -i -e 's/"rand 0.[34].[0-9]\+/"rand 0.3.20/' Cargo.lock
  + - sed -i -e '/^name = "rand"/,/^$/s/version = "0.3.[0-9]\+"/version = "0.3.20"/' Cargo.lock
  env:
  - ALL=' '
  + - rust: 1.15.0
  - rust: stable
  env:
  - FEATURES='unstable quickcheck'
  