message: Try to fix travis.
diff: @@ -110,17 +110,25 @@ matrix:
  install:
  - |
  if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
  - if [[ "${COMPILER}" = "g++-5" ]]; then
  - brew install gcc5
  + if [[ "${COMPILER}" == "g++-5" ]]; then
  + brew install gcc@5
  + brew link --overwrite gcc@5
  fi
  - if [[ "${COMPILER}" = "g++-6" ]]; then
  - brew install gcc6
  + if [[ "${COMPILER}" == "g++-6" ]]; then
  + brew install gcc@6
  + brew link --overwrite gcc@6
  fi
  - if [[ "${COMPILER}" = "g++-7" ]]; then
  - brew install gcc7
  + if [[ "${COMPILER}" == "g++-7" ]]; then
  + brew install gcc@7
  + brew link --overwrite gcc@7
  fi
  fi
  + - |
  + if [[ "${COMPILER}" == g++* ]]; then
  + export J="-j1"
  + fi
  +
  - export CXX="${COMPILER}"
  before_script:
  @@ -128,7 +136,7 @@ before_script:
  script:
  - travis_retry ./waf configure
  - - ./waf build
  + - ./waf build ${J}
  - ./build/release/bin/cquery --ci --log-all-to-stderr --test-unit
  - ./build/release/bin/cquery --ci --log-all-to-stderr --test-index
  