submodules: update cargo from ad6e5c00 to 5dbac988

Changes:

Switch to use crates-io as the registry name and don't include publish when registry is not specified
fix redundant pkgid generation
validate some basic properties of a valid resolve
Detail dep name in invalid version error
Fix dashes in rename dependencies.
Bump flate2 to 1.0.3
Add default in config document
Add support for providing a default registry
Add support for registry to new and init
use impl Iterator instead of custom types in `source`
let jetbrains reorder some impls to match the definition
use impl Iterator instead of custom types in resolver and graph
remove Graph::sort as it is unused
fmt
Bump libgit2-sys to 0.7.9
Switch to use registry
Allow registry option for cargo install.
Second attempt at fixing msys terminal width.
Try to improve "version not found" error
Fix typo

src/Cargo.lock

@@ -204,7 +204,7 @@ dependencies = [
  "env_logger 0.5.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs2 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fwdansi 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -737,7 +737,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "flate2"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -959,7 +959,7 @@ version = "0.0.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tar 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1890,7 +1890,7 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "chalk-engine 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "flate2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fmt_macros 0.0.0",
  "graphviz 0.0.0",
  "jobserver 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2134,7 +2134,7 @@ dependencies = [
 name = "rustc_codegen_utils"
 version = "0.0.0"
 dependencies = [
- "flate2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc 0.0.0",
  "rustc_data_structures 0.0.0",
@@ -2277,7 +2277,7 @@ dependencies = [
 name = "rustc_metadata"
 version = "0.0.0"
 dependencies = [
- "flate2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc_macro 0.0.0",
  "rustc 0.0.0",
@@ -3223,7 +3223,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum failure_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "946d0e98a50d9831f5d589038d2ca7f8f455b1c21028c0db0e84116a12696426"
 "checksum filetime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "da4b9849e77b13195302c174324b5ba73eec9b236b24c221a61000daefb95c5f"
 "checksum fixedbitset 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "86d4de0081402f5e88cdac65c8dcdcc73118c1a7a465e2a05f0da05843a8ea33"
-"checksum flate2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "37847f133aae7acf82bb9577ccd8bda241df836787642654286e79679826a54b"
+"checksum flate2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4af030962d89d62aa52cd9492083b1cd9b2d1a77764878102a6c0f86b4d5444d"
 "checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
 "checksum foreign-types-shared 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"