message: ci: test serde like other features
diff: @@ -13,14 +13,11 @@ cargo build --no-default-features
  cargo test --no-default-features
  # Each isolated feature should also work everywhere.
  -for feature in rand rustc-serialize; do
  +for feature in rand rustc-serialize serde; do
  cargo build --verbose --no-default-features --features="$feature"
  cargo test --verbose --no-default-features --features="$feature"
  done
  -# Build test for the serde feature
  -cargo build --verbose --features "serde"
  -
  # Downgrade serde and build test the 0.7.0 channel as well
  cargo update -p serde --precise 0.7.0
  -cargo build --verbose --features "serde"
  +cargo build --verbose --no-default-features --features "serde"
  