rls-span: Convert to 2018 edition

Author: Xanewok

rls-span/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "rls-span"
 version = "0.4.1"
+edition = "2018"
 authors = ["Nick Cameron <[email protected]>"]
 description = "Types for identifying code spans/ranges"
 license = "Apache-2.0/MIT"

rls-span/src/compiler.rs

@@ -3,7 +3,7 @@
 ///! https://github.com/rust-lang/rust/blob/master/src/libsyntax/json.rs
 use std::path::PathBuf;
 
-use {Column, OneIndexed, Row, Span};
+use crate::{Column, OneIndexed, Row, Span};
 
 #[cfg_attr(feature = "derive", derive(Deserialize))]
 #[derive(Debug, Clone)]

rls-span/src/lib.rs

@@ -1,4 +1,3 @@
-extern crate serde;
 #[cfg(feature = "derive")]
 #[macro_use]
 extern crate serde_derive;