give stack more time

Author: guoshimin2

.travis.yml

@@ -223,7 +223,7 @@ script:
  set -ex
  case "$BUILD" in
  stack)
- travis_wait stack --no-terminal $ARGS test --bench --no-run-benchmarks --haddock --no-haddock-deps
+ travis_wait 30 stack --no-terminal $ARGS test --bench --no-run-benchmarks --haddock --no-haddock-deps
  ;;
  cabal)
  cabal install --enable-tests --enable-benchmarks --force-reinstalls --ghc-options=-O0 --reorder-goals --max-backjumps=-1 $CABALARGS $PACKAGES