Updated dependencies and made logging more readable

Cargo.toml

@@ -16,15 +16,16 @@ exclude = [
 
 [dependencies]
 clap = "2.24"
+chrono = "0.4"
 handlebars = "0.29"
 serde = "1.0"
 serde_derive = "1.0"
 error-chain = "0.11.0"
 serde_json = "1.0"
 pulldown-cmark = "0.1"
-lazy_static = "0.2"
+lazy_static = "1.0"
-log = "0.3"
+log = "0.4"
-env_logger = "0.4.0"
+env_logger = "0.5.0-rc.1"
 toml = "0.4"
 memchr = "2.0.1"
 open = "1.1"
@@ -37,8 +38,8 @@ time = { version = "0.1.34", optional = true }
 crossbeam = { version = "0.3", optional = true }
 
 # Serve feature
-iron = { version = "0.5", optional = true }
+iron = { version = "0.6", optional = true }
-staticfile = { version = "0.4", optional = true }
+staticfile = { version = "0.5", optional = true }
 ws = { version = "0.7", optional = true}
 
 [build-dependencies]
@@ -47,7 +48,7 @@ error-chain = "0.11"
 [dev-dependencies]
 select = "0.4"
 pretty_assertions = "0.4"
-walkdir = "1.0"
+walkdir = "2.0"
 
 [features]
 default = ["output", "watch", "serve"]

src/bin/mdbook.rs

@@ -1,5 +1,6 @@
 #[macro_use]
 extern crate clap;
+extern crate chrono;
 extern crate env_logger;
 extern crate error_chain;
 extern crate log;
@@ -9,9 +10,11 @@ extern crate open;
 use std::env;
 use std::ffi::OsStr;
 use std::path::{Path, PathBuf};
+use std::io::Write;
 use clap::{App, AppSettings, ArgMatches};
-use log::{LogLevelFilter, LogRecord};
+use chrono::Local;
-use env_logger::LogBuilder;
+use log::LevelFilter;
+use env_logger::Builder;
 use error_chain::ChainedError;
 
 pub mod build;
@@ -67,19 +70,24 @@ fn main() {
 }
 
 fn init_logger() {
-    let format = |record: &LogRecord| {
+    let mut builder = Builder::new();
-        let module_path = record.location().module_path();
-        format!("{}:{}: {}", record.level(), module_path, record.args())
-    };
 
-    let mut builder = LogBuilder::new();
+    builder.format(|formatter, record| {
-    builder.format(format).filter(None, LogLevelFilter::Info);
+        writeln!(formatter, "{} [{}] ({}): {}",
+                 Local::now().format("%Y-%m-%d %H:%M:%S"),
+                 record.level(),
+                 record.target(),
+                 record.args())
+    });
 
     if let Ok(var) = env::var("RUST_LOG") {
         builder.parse(&var);
+    } else {
+        // if no RUST_LOG provided, default to logging at the Info level
+        builder.filter(None, LevelFilter::Info);
     }
 
-    builder.init().unwrap();
+    builder.init();
 }
 
 fn get_book_dir(args: &ArgMatches) -> PathBuf {

src/book/mod.rs

@@ -64,7 +64,7 @@ impl MDBook {
             Config::default()
         };
 
-        if log_enabled!(::log::LogLevel::Trace) {
+        if log_enabled!(::log::Level::Trace) {
             for line in format!("Config: {:#?}", config).lines() {
                 trace!("{}", line);
             }

src/book/summary.rs

@@ -689,8 +689,6 @@ mod tests {
     /// [example]: https://github.com/rust-lang/book/blob/2c942dc094f4ddcdc7aba7564f80782801197c99/second-edition/src/SUMMARY.md#basic-rust-literacy
     #[test]
     fn can_have_a_subheader_between_nested_items() {
-        extern crate env_logger;
-        env_logger::init().ok();
         let src = "- [First](./first.md)\n\n## Subheading\n\n- [Second](./second.md)\n";
         let should_be = vec![
             SummaryItem::Link(Link {

tests/parse_existing_summary_files.rs

@@ -14,7 +14,7 @@ macro_rules! summary_md_test {
     ($name:ident, $filename:expr) => {
         #[test]
         fn $name() {
-            env_logger::init().ok();
+            env_logger::try_init().ok();
 
             let filename = Path::new(env!("CARGO_MANIFEST_DIR"))
                 .join("tests")

tests/rendered_output.rs

@@ -11,7 +11,7 @@ use dummy_book::{assert_contains_strings, DummyBook};
 use std::fs;
 use std::path::Path;
 use std::ffi::OsStr;
-use walkdir::{DirEntry, WalkDir, WalkDirIterator};
+use walkdir::{DirEntry, WalkDir};
 use select::document::Document;
 use select::predicate::{Class, Name, Predicate};
 use mdbook::errors::*;