Fix the build (more edition 2018 issues)

Author: vi

src/header/accept.rs

@@ -56,7 +56,7 @@ impl HeaderFormat for WebSocketAccept {
 #[cfg(all(feature = "nightly", test))]
 mod tests {
 	use super::*;
-	use header::{Headers, WebSocketKey};
+	use crate::header::{Headers, WebSocketKey};
 	use hyper::header::Header;
 	use std::str::FromStr;
 	use test;

src/header/extensions.rs

@@ -134,7 +134,7 @@ mod tests {
 
 	#[test]
 	fn test_header_extensions() {
-		use header::Headers;
+		use crate::header::Headers;
 		let value = vec![b"foo, bar; baz; qux=quux".to_vec()];
 		let extensions: WebSocketExtensions = Header::parse_header(&value[..]).unwrap();
 

src/header/key.rs

@@ -65,7 +65,7 @@ mod tests {
 
 	#[test]
 	fn test_header_key() {
-		use header::Headers;
+		use crate::header::Headers;
 
 		let extensions = WebSocketKey::from_array([65; 16]);
 		let mut headers = Headers::new();

src/header/origin.rs

@@ -46,7 +46,7 @@ mod tests {
 
 	#[test]
 	fn test_header_origin() {
-		use header::Headers;
+		use crate::header::Headers;
 
 		let origin = Origin("foo bar".to_string());
 		let mut headers = Headers::new();

src/header/protocol.rs

@@ -48,7 +48,7 @@ mod tests {
 
 	#[test]
 	fn test_header_protocol() {
-		use header::Headers;
+		use crate::header::Headers;
 
 		let protocol = WebSocketProtocol(vec!["foo".to_string(), "bar".to_string()]);
 		let mut headers = Headers::new();

src/header/version.rs

@@ -54,7 +54,7 @@ mod tests {
 
 	#[test]
 	fn test_websocket_version() {
-		use header::Headers;
+		use crate::header::Headers;
 
 		let version = WebSocketVersion::WebSocket13;
 		let mut headers = Headers::new();