Address comments and fix travis warning

src/librustc_errors/Cargo.toml

@@ -7,7 +7,6 @@ version = "0.0.0"
 name = "rustc_errors"
 path = "lib.rs"
 crate-type = ["dylib"]
-test = false
 
 [dependencies]
 log = { path = "../liblog" }

src/librustdoc/clean/mod.rs

@@ -24,12 +24,11 @@ pub use self::SelfTy::*;
 pub use self::FunctionRetTy::*;
 pub use self::Visibility::*;
 
-use syntax;
 use syntax::abi::Abi;
 use syntax::ast;
 use syntax::attr;
 use syntax::attr::{AttributeMethods, AttrMetaMethods};
-use syntax::codemap::{self, Spanned};
+use syntax::codemap::Spanned;
 use syntax::parse::token::{self, InternedString, keywords};
 use syntax::ptr::P;
 use syntax_pos::{self, DUMMY_SP, Pos};

src/librustdoc/doctree.rs

@@ -13,7 +13,6 @@
 pub use self::StructType::*;
 pub use self::TypeBound::*;
 
-use syntax;
 use syntax::abi;
 use syntax::ast;
 use syntax::ast::{Name, NodeId};

src/libsyntax_pos/Cargo.toml

@@ -7,7 +7,6 @@ version = "0.0.0"
 name = "syntax_pos"
 path = "lib.rs"
 crate-type = ["dylib"]
-test = false
 
 [dependencies]
 serialize = { path = "../libserialize" }