message: Update rustfmt version
diff: @@ -10,7 +10,7 @@ main() {
  --force \
  --crate rustfmt \
  --git japaric/rustfmt-bin \
  - --tag v0.6.3-20170107 \
  + --tag v0.6.3-20161120 \
  if [ "$TRAVIS_RUST_VERSION" = "nightly" ]; then
  cargo install clippy || true
  