Update crates and submodules to pull doc fixes

Update `rand` crate to `0.3.19`.
Update `log` crate to `0.3.9` and `0.4.1`.
Update `parking_lot_core` crate to `0.2.9`.
Upgrade all flate2 dependencies to `1.0.1`.
- Update `rust-installer` submodule.

Author: MaloJaffre

src/Cargo.lock

@@ -54,4 +54,4 @@ byteorder = { version = "1.1", features = ["i128"]}
 # tl;dr; this is not needed to get `rustc` to compile, but if you remove it then
 #        later crate stop compiling. If you can remove this and everything
 #        compiles, then please feel free to do so!
-flate2 = "0.2"
+flate2 = "1.0"

src/librustc/Cargo.toml

@@ -9,7 +9,7 @@ path = "lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-flate2 = "0.2"
+flate2 = "1.0"
 log = "0.3"
 proc_macro = { path = "../libproc_macro" }
 rustc = { path = "../librustc" }

src/librustc_metadata/Cargo.toml

@@ -11,7 +11,7 @@ test = false
 
 [dependencies]
 bitflags = "1.0"
-flate2 = "0.2"
+flate2 = "1.0"
 jobserver = "0.1.5"
 log = "0.3"
 num_cpus = "1.0"

src/librustc_trans/Cargo.toml

@@ -74,7 +74,7 @@ pub fn encode(identifier: &str, bytecode: &[u8]) -> Vec<u8> {
     encoded.extend_from_slice(&[0, 0, 0, 0, 0, 0, 0, 0]);
 
     let before = encoded.len();
-    DeflateEncoder::new(&mut encoded, Compression::Fast)
+    DeflateEncoder::new(&mut encoded, Compression::fast())
         .write_all(bytecode)
         .unwrap();
     let after = encoded.len();

src/librustc_trans/back/bytecode.rs

@@ -651,7 +651,7 @@ fn write_metadata<'a, 'gcx>(tcx: TyCtxt<'a, 'gcx, 'gcx>,
 
     assert!(kind == MetadataKind::Compressed);
     let mut compressed = tcx.metadata_encoding_version();
-    DeflateEncoder::new(&mut compressed, Compression::Fast)
+    DeflateEncoder::new(&mut compressed, Compression::fast())
         .write_all(&metadata.raw_data).unwrap();
 
     let llmeta = C_bytes_in_context(metadata_llcx, &compressed);

src/librustc_trans/base.rs

@@ -11,7 +11,7 @@ test = false
 
 [dependencies]
 ar = "0.3.0"
-flate2 = "0.2"
+flate2 = "1.0"
 log = "0.3"
 
 syntax = { path = "../libsyntax" }

src/librustc_trans_utils/Cargo.toml

@@ -225,7 +225,7 @@ impl TransCrate for MetadataOnlyTransCrate {
                 out_filename(sess, crate_type, &outputs, &trans.0.crate_name.as_str());
             let mut compressed = trans.0.metadata_version.clone();
             let metadata = if crate_type == CrateType::CrateTypeDylib {
-                DeflateEncoder::new(&mut compressed, Compression::Fast)
+                DeflateEncoder::new(&mut compressed, Compression::fast())
                     .write_all(&trans.0.metadata.raw_data)
                     .unwrap();
                 &compressed