edition: manual changes

This is mostly just about removing 'extern crate' everywhere and fixing
the fallout.

crates/cli/README.md

@@ -29,9 +29,3 @@ Add this to your `Cargo.toml`:
 [dependencies]
 grep-cli = "0.1"
 ```
-
-and this to your crate root:
-
-```rust
-extern crate grep_cli;
-```

crates/cli/src/decompress.rs

@@ -230,7 +230,7 @@ impl DecompressionReaderBuilder {
         match self.command_builder.build(&mut cmd) {
             Ok(cmd_reader) => Ok(DecompressionReader { rdr: Ok(cmd_reader) }),
             Err(err) => {
-                debug!(
+                log::debug!(
                     "{}: error spawning command '{:?}': {} \
                      (falling back to uncompressed reader)",
                     path.display(),
@@ -479,7 +479,7 @@ fn default_decompression_commands() -> Vec<DecompressionCommand> {
         let bin = match resolve_binary(Path::new(args[0])) {
             Ok(bin) => bin,
             Err(err) => {
-                debug!("{}", err);
+                log::debug!("{}", err);
                 return;
             }
         };

crates/cli/src/human.rs

@@ -88,7 +88,7 @@ impl From<ParseSizeError> for io::Error {
 ///
 /// Additional suffixes may be added over time.
 pub fn parse_human_readable_size(size: &str) -> Result<u64, ParseSizeError> {
-    lazy_static! {
+    lazy_static::lazy_static! {
         // Normally I'd just parse something this simple by hand to avoid the
         // regex dep, but we bring regex in any way for glob matching, so might
         // as well use it.

crates/cli/src/lib.rs

@@ -158,13 +158,6 @@ error message is crafted that typically tells the user how to fix the problem.
 
 #![deny(missing_docs)]
 
-use atty;
-
-#[macro_use]
-extern crate lazy_static;
-#[macro_use]
-extern crate log;
-
 mod decompress;
 mod escape;
 mod human;

crates/cli/src/process.rs

@@ -254,7 +254,7 @@ impl CommandReader {
 impl Drop for CommandReader {
     fn drop(&mut self) {
         if let Err(error) = self.close() {
-            warn!("{}", error);
+            log::warn!("{}", error);
         }
     }
 }