Update env_logger to 0.5.4

It looks like this cuts down on the number of dependencies in env_logger and
notably cuts out a difference between a shared dependency of rls/cargo. My goal
here is to ensure that when we compile the RLS/Cargo on CI we only compile Cargo
once, and this is one step towards that!

src/librustc_driver/Cargo.toml

@@ -12,7 +12,7 @@ crate-type = ["dylib"]
 arena = { path = "../libarena" }
 graphviz = { path = "../libgraphviz" }
 log = "0.4"
-env_logger = { version = "0.4", default-features = false }
+env_logger = { version = "0.5", default-features = false }
 rustc = { path = "../librustc" }
 rustc_allocator = { path = "../librustc_allocator" }
 rustc_back = { path = "../librustc_back" }

src/librustc_driver/lib.rs

@@ -1577,7 +1577,7 @@ pub fn diagnostics_registry() -> errors::registry::Registry {
 }
 
 pub fn main() {
-    env_logger::init().unwrap();
+    env_logger::init();
     let result = run(|| {
         let args = env::args_os().enumerate()
             .map(|(i, arg)| arg.into_string().unwrap_or_else(|arg| {

src/librustc_trans/Cargo.toml

@@ -35,6 +35,10 @@ syntax = { path = "../libsyntax" }
 syntax_pos = { path = "../libsyntax_pos" }
 tempdir = "0.3"
 
+# not actually used but needed to make sure we enable the same feature set as
+# winapi used in librustc
+env_logger = { version = "0.5", default-features = false }
+
 [features]
 # Used to communicate the feature to `rustc_back` in the same manner that the
 # `rustc` driver script communicate this.

src/librustdoc/lib.rs

@@ -100,7 +100,7 @@ struct Output {
 
 pub fn main() {
     const STACK_SIZE: usize = 32_000_000; // 32MB
-    env_logger::init().unwrap();
+    env_logger::init();
     let res = std::thread::Builder::new().stack_size(STACK_SIZE).spawn(move || {
         get_args().map(|args| main_args(&args)).unwrap_or(1)
     }).unwrap().join().unwrap_or(101);

src/tools/compiletest/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.0.0"
 
 [dependencies]
 diff = "0.1.10"
-env_logger = { version = "0.4", default-features = false }
+env_logger = { version = "0.5", default-features = false }
 filetime = "0.1"
 getopts = "0.2"
 log = "0.4"

src/tools/compiletest/src/main.rs

@@ -51,7 +51,7 @@ mod raise_fd_limit;
 mod read2;
 
 fn main() {
-    env_logger::init().unwrap();
+    env_logger::init();
 
     let config = parse_config(env::args().collect());
 

src/tools/linkchecker/main.rs

@@ -139,6 +139,8 @@ fn check(cache: &mut Cache,
        file.ends_with("util/struct.ThinVec.html") ||
        file.ends_with("util/struct.RcSlice.html") ||
        file.ends_with("layout/struct.TyLayout.html") ||
+       file.ends_with("humantime/struct.Timestamp.html") ||
+       file.ends_with("log/index.html") ||
        file.ends_with("ty/struct.Slice.html") ||
        file.ends_with("ty/enum.Attributes.html") ||
        file.ends_with("ty/struct.SymbolName.html") {

src/tools/tidy/src/deps.rs

@@ -56,7 +56,9 @@ static WHITELIST_CRATES: &'static [CrateVersion] = &[
 
 /// Whitelist of crates rustc is allowed to depend on. Avoid adding to the list if possible.
 static WHITELIST: &'static [Crate] = &[
+    Crate("aho-corasick"),
     Crate("ar"),
+    Crate("atty"),
     Crate("backtrace"),
     Crate("backtrace-sys"),
     Crate("bitflags"),
@@ -65,32 +67,47 @@ static WHITELIST: &'static [Crate] = &[
     Crate("cfg-if"),
     Crate("cmake"),
     Crate("ena"),
+    Crate("env_logger"),
     Crate("filetime"),
     Crate("flate2"),
     Crate("fuchsia-zircon"),
     Crate("fuchsia-zircon-sys"),
+    Crate("humantime"),
     Crate("jobserver"),
     Crate("kernel32-sys"),
     Crate("lazy_static"),
     Crate("libc"),
     Crate("log"),
     Crate("log_settings"),
+    Crate("memchr"),
     Crate("miniz-sys"),
     Crate("num_cpus"),
     Crate("owning_ref"),
     Crate("parking_lot"),
     Crate("parking_lot_core"),
+    Crate("quick-error"),
     Crate("rand"),
     Crate("redox_syscall"),
+    Crate("redox_termios"),
+    Crate("regex"),
+    Crate("regex-syntax"),
     Crate("rustc-demangle"),
     Crate("smallvec"),
     Crate("stable_deref_trait"),
     Crate("tempdir"),
+    Crate("termcolor"),
+    Crate("terminon"),
+    Crate("termion"),
+    Crate("thread_local"),
     Crate("unicode-width"),
+    Crate("unreachable"),
+    Crate("utf8-ranges"),
+    Crate("void"),
     Crate("winapi"),
     Crate("winapi-build"),
     Crate("winapi-i686-pc-windows-gnu"),
     Crate("winapi-x86_64-pc-windows-gnu"),
+    Crate("wincolor"),
 ];
 
 // Some types for Serde to deserialize the output of `cargo metadata` to...