Use the correct log crate and setup env_logger in main.

components/style/Cargo.toml

@@ -28,6 +28,7 @@ git = "https://github.com/servo/string-cache"
 git = "https://github.com/servo/string-cache"
 
 [dependencies]
+log = "*"
 encoding = "0.2"
 rustc-serialize = "0.3"
 matches = "0.1"

components/style/lib.rs

@@ -8,7 +8,6 @@
 #![feature(core)]
 #![feature(collections)]
 #![feature(hash)]
-#![feature(rustc_private)]
 #![feature(custom_attribute, custom_derive)]
 #![plugin(string_cache_plugin)]
 #![plugin(plugins)]

components/style/parser.rs

@@ -41,7 +41,7 @@ impl<'a> ParserContext<'a> {
 /// Set a `RUST_LOG=style::errors` environment variable
 /// to log CSS parse errors to stderr.
 pub fn log_css_error(input: &mut Parser, position: SourcePosition, message: &str) {
-    if log_enabled!(log::INFO) {
+    if log_enabled!(log::LogLevel::Info) {
         let location = input.source_location(position);
         // TODO eventually this will got into a "web console" or something.
         info!("{}:{} {}", location.line, location.column, message)