diff --git a/src/Cargo.lock b/src/Cargo.lock
index 63a6b3c66a6a..5c912ef6d1f4 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -296,15 +296,16 @@ dependencies = [
 
 [[package]]
 name = "clippy"
-version = "0.0.186"
+version = "0.0.188"
 dependencies = [
- "cargo_metadata 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy-mini-macro-test 0.2.0",
- "clippy_lints 0.0.186",
- "compiletest_rs 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "duct 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.188",
+ "compiletest_rs 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive-new 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -315,36 +316,16 @@ version = "0.2.0"
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.186"
+version = "0.0.188"
 dependencies = [
  "if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "itertools 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "matches 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "pulldown-cmark 0.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-normalization 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "url 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "clippy_lints"
-version = "0.0.187"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "itertools 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "itertools 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "pulldown-cmark 0.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pulldown-cmark 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -404,18 +385,20 @@ dependencies = [
 
 [[package]]
 name = "compiletest_rs"
-version = "0.3.6"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "diff 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "filetime 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miow 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -578,17 +561,6 @@ name = "dtoa"
 version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "duct"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "error-chain 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazycell 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "os_pipe 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "shared_child 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "either"
 version = "1.4.0"
@@ -645,14 +617,6 @@ dependencies = [
  "termcolor 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "error-chain"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "backtrace 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "error-chain"
 version = "0.11.0"
@@ -921,14 +885,6 @@ name = "is-match"
 version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "itertools"
-version = "0.6.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "either 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "itertools"
 version = "0.7.6"
@@ -980,7 +936,7 @@ dependencies = [
 
 [[package]]
 name = "languageserver-types"
-version = "0.30.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "enum_primitive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1001,11 +957,6 @@ name = "lazy_static"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "lazycell"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "lazycell"
 version = "0.6.0"
@@ -1161,17 +1112,6 @@ dependencies = [
  "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "miow"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "net2 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "miow"
 version = "0.3.1"
@@ -1187,7 +1127,7 @@ version = "0.1.0"
 dependencies = [
  "byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cargo_metadata 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "compiletest_rs 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "compiletest_rs 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1196,32 +1136,11 @@ dependencies = [
 name = "multiple_bins"
 version = "0.1.0"
 
-[[package]]
-name = "net2"
-version = "0.2.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "nibble_vec"
 version = "0.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "nix"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "nodrop"
 version = "0.1.12"
@@ -1308,16 +1227,6 @@ dependencies = [
  "vcpkg 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "os_pipe"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "nix 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "owning_ref"
 version = "0.3.3"
@@ -1405,15 +1314,6 @@ dependencies = [
  "core 0.0.0",
 ]
 
-[[package]]
-name = "pulldown-cmark"
-version = "0.0.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bitflags 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "getopts 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "pulldown-cmark"
 version = "0.1.2"
@@ -1550,11 +1450,6 @@ name = "regex-syntax"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "regex-syntax"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "regex-syntax"
 version = "0.5.0"
@@ -1586,12 +1481,12 @@ version = "0.126.0"
 dependencies = [
  "cargo 0.27.0",
  "cargo_metadata 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy_lints 0.0.187 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.188",
  "env_logger 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "json 0.11.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "jsonrpc-core 8.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "languageserver-types 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "languageserver-types 0.31.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2259,14 +2154,6 @@ name = "scopeguard"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "semver"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "semver"
 version = "0.8.0"
@@ -2338,16 +2225,6 @@ dependencies = [
 name = "serialize"
 version = "0.0.0"
 
-[[package]]
-name = "shared_child"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "shell-escape"
 version = "0.1.3"
@@ -2831,15 +2708,6 @@ dependencies = [
 name = "workspace_symbol"
 version = "0.1.0"
 
-[[package]]
-name = "ws2_32-sys"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "xattr"
 version = "0.1.11"
@@ -2883,11 +2751,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d4c819a1287eb618df47cc647173c5c4c66ba19d888a6e50d605672aed3140de"
 "checksum chrono 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7c20ebe0b2b08b0aeddba49c609fe7957ba2e33449882cb186a180bc60682fa9"
 "checksum clap 2.29.0 (registry+https://github.com/rust-lang/crates.io-index)" = "110d43e343eb29f4f51c1db31beb879d546db27998577e5715270a54bcf41d3f"
-"checksum clippy_lints 0.0.187 (registry+https://github.com/rust-lang/crates.io-index)" = "f2227eeb80d00b3e6f67d27953224b2087a65e40597e3253b2a25493aac63859"
 "checksum cmake 0.1.29 (registry+https://github.com/rust-lang/crates.io-index)" = "56d741ea7a69e577f6d06b36b7dff4738f680593dc27a701ffa8506b73ce28bb"
 "checksum commoncrypto 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d056a8586ba25a1e4d61cb090900e495952c7886786fc55f909ab2f819b69007"
 "checksum commoncrypto-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1fed34f46747aa73dfaa578069fd8279d2818ade2b55f38f22a9401c7f4083e2"
-"checksum compiletest_rs 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "6c5aafb5d4a77c6b5fa384fe93c7a9a3561bd88c4b8b8e45187cf5e779b1badc"
+"checksum compiletest_rs 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "d47ca9a69772587159e1c7e20ee1e43dfe5f184d59591eac70e7d3603bdfe57a"
 "checksum core-foundation 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "286e0b41c3a20da26536c6000a280585d519fd07b3956b43aed8a79e9edce980"
 "checksum core-foundation-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "716c271e8613ace48344f723b60b900a93150271e5be206212d052bbc0883efa"
 "checksum crossbeam 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "24ce9782d4d5c53674646a6a4c1863a21a8fc0cb649b3c94dfc16e45071dea19"
@@ -2901,7 +2768,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum diff 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "3c2b69f912779fbb121ceb775d74d51e915af17aaebc38d28a592843a2dd0a3a"
 "checksum docopt 0.8.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d8acd393692c503b168471874953a2531df0e9ab77d0b6bbc582395743300a4a"
 "checksum dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "09c3753c3db574d215cba4ea76018483895d7bff25a31b49ba45db21c48e50ab"
-"checksum duct 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e45aa15fe0a8a8f511e6d834626afd55e49b62e5c8802e18328a87e8a8f6065c"
 "checksum either 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "740178ddf48b1a9e878e6d6509a1442a2d42fd2928aae8e7a6f8a36fb01981b3"
 "checksum ena 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f8b449f3b18c89d2dbe40548d2ee4fa58ea0a08b761992da6ecb9788e4688834"
 "checksum endian-type 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c34f04666d835ff5d62e058c3995147c06f42fe86ff053337632bca83e42702d"
@@ -2910,7 +2776,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3ddf21e73e016298f5cb37d6ef8e8da8e39f91f9ec8b0df44b7deb16a9f8cd5b"
 "checksum env_logger 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f0628f04f7c26ebccf40d7fc2c1cf92236c05ec88cf2132641cc956812312f0f"
 "checksum error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff511d5dc435d703f4971bc399647c9bc38e20cb41452e3b9feb4765419ed3f3"
-"checksum error-chain 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6930e04918388a9a2e41d518c25cf679ccafe26733fb4127dbf21993f2575d46"
 "checksum failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "934799b6c1de475a012a02dab0ace1ace43789ee4b99bcfbf1a2e3e8ced5de82"
 "checksum failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c7cdda555bb90c9bb67a3b670a0f42de8e73f5981524123ad8578aafec8ddb8b"
 "checksum filetime 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "714653f3e34871534de23771ac7b26e999651a0a228f47beb324dfdf1dd4b10f"
@@ -2935,17 +2800,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum if_chain 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "61bb90bdd39e3af69b0172dfc6130f6cd6332bf040fbb9bdd4401d37adbd48b8"
 "checksum ignore 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "245bea0ba52531a3739cb8ba99f8689eda13d7faf8c36b6a73ce4421aab42588"
 "checksum is-match 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7e5b386aef33a1c677be65237cb9d32c3f3ef56bd035949710c4bb13083eb053"
-"checksum itertools 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d3f2be4da1690a039e9ae5fd575f706a63ad5a2120f161b1d653c9da3930dd21"
 "checksum itertools 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "b07332223953b5051bceb67e8c4700aa65291535568e1f12408c43c4a42c0394"
 "checksum itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8324a32baf01e2ae060e9de58ed0bc2320c9a2833491ee36cd3b4c414de4db8c"
 "checksum jobserver 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "9f2abd9fd3242accb0e2e30986f2cf30cda3e19eec5cc6d584b218ce2b1c0e3c"
 "checksum json 0.11.12 (registry+https://github.com/rust-lang/crates.io-index)" = "39ebf0fac977ee3a4a3242b6446004ff64514889e3e2730bbd4f764a67a2e483"
 "checksum jsonrpc-core 8.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ddf83704f4e79979a424d1082dd2c1e52683058056c9280efa19ac5f6bc9033c"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
-"checksum languageserver-types 0.30.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1541f9b22687f060511d213036e1f058797c48e3501e177f01cb6e88de802f5b"
+"checksum languageserver-types 0.31.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d25086d59f44b80253d5ff96c66a692fb69de8485cf7a25b28677e89126de0d"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c8f31047daa365f19be14b47c29df4f7c3b581832407daabe6ae77397619237d"
-"checksum lazycell 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3b585b7a6811fb03aa10e74b278a0f00f8dd9b45dc681f148bb29fa5cb61859b"
 "checksum lazycell 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a6f08839bc70ef4a3fe1d566d5350f519c5912ea86be0df1740a7d247c7fc0ef"
 "checksum libc 0.2.39 (registry+https://github.com/rust-lang/crates.io-index)" = "f54263ad99207254cf58b5f701ecb432c717445ea2ee8af387334bdd1a03fdff"
 "checksum libgit2-sys 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1ecbd6428006c321c29b6c8a895f0d90152f1cf4fd8faab69fc436a3d9594f63"
@@ -2961,11 +2824,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum memchr 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "796fba70e76612589ed2ce7f45282f5af869e0fdd7cc6199fa1aa1f1d591ba9d"
 "checksum memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0f9dc261e2b62d7a622bf416ea3c5245cdd5d9a7fcc428c0d06804dfce1775b3"
 "checksum miniz-sys 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "609ce024854aeb19a0ef7567d348aaa5a746b32fb72e336df7fcc16869d7e2b4"
-"checksum miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
 "checksum miow 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9224c91f82b3c47cf53dcf78dfaa20d6888fbcc5d272d5f2fcdf8a697f3c987d"
-"checksum net2 0.2.32 (registry+https://github.com/rust-lang/crates.io-index)" = "9044faf1413a1057267be51b5afba8eb1090bd2231c693664aa1db716fe1eae0"
 "checksum nibble_vec 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "62e678237a4c70c5f2b917cefd7d080dfbf800421f06e8a59d4e28ef5130fd9e"
-"checksum nix 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "47e49f6982987135c5e9620ab317623e723bd06738fd85377e8d55f57c8b6487"
 "checksum nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "9a2228dca57108069a5262f2ed8bd2e82496d2e074a06d1ccc7ce1687b6ae0a2"
 "checksum num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "4703ad64153382334aa8db57c637364c322d3372e097840c72000dabdcf6156e"
 "checksum num-integer 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)" = "f8d26da319fb45674985c78f1d1caf99aa4941f785d384a2ae36d0740bc3e2fe"
@@ -2977,7 +2837,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum openssl 0.10.5 (registry+https://github.com/rust-lang/crates.io-index)" = "1636c9f1d78af9cbcc50e523bfff4a30274108aad5e86761afd4d31e4e184fa7"
 "checksum openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 "checksum openssl-sys 0.9.27 (registry+https://github.com/rust-lang/crates.io-index)" = "d6fdc5c4a02e69ce65046f1763a0181107038e02176233acb0b3351d7cc588f9"
-"checksum os_pipe 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "998bfbb3042e715190fe2a41abfa047d7e8cb81374d2977d7f100eacd8619cb1"
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
 "checksum parking_lot 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3e7f7c9857874e54afeb950eebeae662b1e51a2493666d2ea4c0a5d91dcf0412"
 "checksum parking_lot_core 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "538ef00b7317875071d5e00f603f24d16f0b474c1a5fc0ccb8b454ca72eafa79"
@@ -2985,7 +2844,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum pest 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "0a6dda33d67c26f0aac90d324ab2eb7239c819fc7b2552fe9faa4fe88441edc8"
 "checksum pkg-config 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "3a8b4c6b8165cd1a1cd4b9b120978131389f64bdaf456435caa41e630edba903"
 "checksum proc-macro2 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cd07deb3c6d1d9ff827999c7f9b04cdfd66b1b17ae508e14fe47b620f2282ae0"
-"checksum pulldown-cmark 0.0.15 (registry+https://github.com/rust-lang/crates.io-index)" = "378e941dbd392c101f2cb88097fa4d7167bc421d4b88de3ff7dbee503bc3233b"
 "checksum pulldown-cmark 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d6fdf85cda6cadfae5428a54661d431330b312bc767ddbc57adbedc24da66e32"
 "checksum quick-error 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "eda5fe9b71976e62bc81b781206aaa076401769b2143379d3eb2118388babac4"
 "checksum quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "07589615d719a60c8dd8a4622e7946465dfef20d1a428f969e3443e7386d5f45"
@@ -3001,7 +2859,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum regex 0.1.80 (registry+https://github.com/rust-lang/crates.io-index)" = "4fd4ace6a8cf7860714a2c2280d6c1f7e6a413486c13298bbc86fd3da019402f"
 "checksum regex 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "a62bf8bb734ab90b7f234b681b01af396e5d39b028906c210dc04fa1d5e9e5b3"
 "checksum regex-syntax 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "f9ec002c35e86791825ed294b50008eea9ddfc8def4420124fbc6b08db834957"
-"checksum regex-syntax 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8e931c58b93d86f080c734bfd2bce7dd0079ae2331235818133c8be7f422e20e"
 "checksum regex-syntax 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "48d7391e7e90e06eaf3aefbe4652464153ecfec64806f3bf77ffc59638a63e77"
 "checksum remove_dir_all 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b5d2f806b0fcdabd98acd380dc8daef485e22bcb7cddc811d1337967f2528cf5"
 "checksum rls-analysis 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fd4b9a3a3f2345854e39768e6425d1c893855da217183d1c0b3ff6f1664b6b6d"
@@ -3024,7 +2881,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum scoped-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8674d439c964889e2476f474a3bf198cc9e199e77499960893bac5de7e9218a4"
 "checksum scopeguard 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "59a076157c1e2dc561d8de585151ee6965d910dd4dcb5dabb7ae3e83981a6c57"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
-"checksum semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a3186ec9e65071a2095434b1f5bb24838d4e8e130f584c790f6033c79943537"
 "checksum semver 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bee2bc909ab2d8d60dab26e8cad85b25d795b14603a0dcb627b78b9d30b6454b"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
@@ -3033,7 +2889,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum serde_derive_internals 0.20.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1fc848d073be32cd982380c06587ea1d433bc1a4c4a111de07ec2286a3ddade8"
 "checksum serde_ignored 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "190e9765dcedb56be63b6e0993a006c7e3b071a016a304736e4a315dc01fb142"
 "checksum serde_json 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)" = "57781ed845b8e742fc2bf306aba8e3b408fe8c366b900e3769fbc39f49eb8b39"
-"checksum shared_child 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "099b38928dbe4a0a01fcd8c233183072f14a7d126a34bed05880869be66e14cc"
 "checksum shell-escape 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "dd5cc96481d54583947bfe88bf30c23d53f883c6cd0145368b69989d97b84ef8"
 "checksum shlex 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7fdf1b9db47230893d76faad238fd6097fd6d6a9245cd7a4d90dbd639536bbd2"
 "checksum smallvec 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44db0ecb22921ef790d17ae13a3f6d15784183ff5f2a01aa32098c7498d2b4b9"
@@ -3084,7 +2939,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum wincolor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "eeb06499a3a4d44302791052df005d5232b927ed1a9658146d842165c4de7767"
-"checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
 "checksum xattr 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "5f04de8a1346489a2f9e9bd8526b73d135ec554227b17568456e86aa35b6f3fc"
 "checksum xz2 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "98df591c3504d014dd791d998123ed00a476c7e26dc6b2e873cb55c6ac9e59fa"
 "checksum yaml-rust 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e66366e18dc58b46801afbf2ca7661a9f59cc8c5962c29892b6039b4f86fa992"
diff --git a/src/Cargo.toml b/src/Cargo.toml
index c03301852cd3..814c054c51e4 100644
--- a/src/Cargo.toml
+++ b/src/Cargo.toml
@@ -72,3 +72,4 @@ cargo = { path = "tools/cargo" }
 # RLS depends on `rustfmt` from crates.io, so we put this in a `[patch]` section
 # for crates.io
 rustfmt-nightly = { path = "tools/rustfmt" }
+clippy_lints = { path = "tools/clippy/clippy_lints" }
diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index c3d8c9f8c010..814615790363 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -1120,7 +1120,7 @@ impl Step for Rls {
         // state for RLS isn't testing.
         let rls = builder.ensure(tool::Rls {
             compiler: builder.compiler(stage, build.build),
-            target
+            target, extra_features: Vec::new()
         }).or_else(|| { println!("Unable to build RLS, skipping dist"); None })?;
 
         install(&rls, &image.join("bin"), 0o755);
@@ -1199,11 +1199,11 @@ impl Step for Rustfmt {
         // Prepare the image directory
         let rustfmt = builder.ensure(tool::Rustfmt {
             compiler: builder.compiler(stage, build.build),
-            target
+            target, extra_features: Vec::new()
         }).or_else(|| { println!("Unable to build Rustfmt, skipping dist"); None })?;
         let cargofmt = builder.ensure(tool::Cargofmt {
             compiler: builder.compiler(stage, build.build),
-            target
+            target, extra_features: Vec::new()
         }).or_else(|| { println!("Unable to build Cargofmt, skipping dist"); None })?;
 
         install(&rustfmt, &image.join("bin"), 0o755);
diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 938237dd82d5..10a2fc7f58a7 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -115,6 +115,7 @@
 
 #![deny(warnings)]
 #![feature(core_intrinsics)]
+#![feature(slice_concat_ext)]
 
 #[macro_use]
 extern crate build_helper;
diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index d5c837c12749..de938ec8e830 100644
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -245,7 +245,7 @@ impl Step for Rls {
         let host = self.host;
         let compiler = builder.compiler(stage, host);
 
-        builder.ensure(tool::Rls { compiler, target: self.host });
+        builder.ensure(tool::Rls { compiler, target: self.host, extra_features: Vec::new() });
         let mut cargo = tool::prepare_tool_cargo(builder,
                                                  compiler,
                                                  host,
@@ -291,7 +291,7 @@ impl Step for Rustfmt {
         let host = self.host;
         let compiler = builder.compiler(stage, host);
 
-        builder.ensure(tool::Rustfmt { compiler, target: self.host });
+        builder.ensure(tool::Rustfmt { compiler, target: self.host, extra_features: Vec::new() });
         let mut cargo = tool::prepare_tool_cargo(builder,
                                                  compiler,
                                                  host,
@@ -339,7 +339,12 @@ impl Step for Miri {
         let host = self.host;
         let compiler = builder.compiler(stage, host);
 
-        if let Some(miri) = builder.ensure(tool::Miri { compiler, target: self.host }) {
+        let miri = builder.ensure(tool::Miri {
+            compiler,
+            target: self.host,
+            extra_features: Vec::new(),
+        });
+        if let Some(miri) = miri {
             let mut cargo = builder.cargo(compiler, Mode::Tool, host, "test");
             cargo.arg("--manifest-path").arg(build.src.join("src/tools/miri/Cargo.toml"));
 
@@ -391,7 +396,12 @@ impl Step for Clippy {
         let host = self.host;
         let compiler = builder.compiler(stage, host);
 
-        if let Some(clippy) = builder.ensure(tool::Clippy { compiler, target: self.host }) {
+        let clippy = builder.ensure(tool::Clippy {
+            compiler,
+            target: self.host,
+            extra_features: Vec::new(),
+        });
+        if let Some(clippy) = clippy {
             let mut cargo = builder.cargo(compiler, Mode::Tool, host, "test");
             cargo.arg("--manifest-path").arg(build.src.join("src/tools/clippy/Cargo.toml"));
 
diff --git a/src/bootstrap/tool.rs b/src/bootstrap/tool.rs
index 9036eb044b5a..5f5b10a07b86 100644
--- a/src/bootstrap/tool.rs
+++ b/src/bootstrap/tool.rs
@@ -12,6 +12,7 @@ use std::fs;
 use std::env;
 use std::path::PathBuf;
 use std::process::{Command, exit};
+use std::slice::SliceConcatExt;
 
 use Mode;
 use Compiler;
@@ -74,7 +75,7 @@ impl Step for CleanTools {
     }
 }
 
-#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+#[derive(Debug, Clone, Hash, PartialEq, Eq)]
 struct ToolBuild {
     compiler: Compiler,
     target: Interned<String>,
@@ -82,6 +83,7 @@ struct ToolBuild {
     path: &'static str,
     mode: Mode,
     is_ext_tool: bool,
+    extra_features: Vec<String>,
 }
 
 impl Step for ToolBuild {
@@ -114,6 +116,7 @@ impl Step for ToolBuild {
         println!("Building stage{} tool {} ({})", compiler.stage, tool, target);
 
         let mut cargo = prepare_tool_cargo(builder, compiler, target, "build", path);
+        cargo.arg("--features").arg(self.extra_features.join(" "));
         let is_expected = build.try_run(&mut cargo);
         build.save_toolstate(tool, if is_expected {
             ToolState::TestFail
@@ -242,6 +245,7 @@ macro_rules! tool {
                     mode: $mode,
                     path: $path,
                     is_ext_tool: false,
+                    extra_features: Vec::new(),
                 }).expect("expected to build -- essential tool")
             }
         }
@@ -291,6 +295,7 @@ impl Step for RemoteTestServer {
             mode: Mode::Libstd,
             path: "src/tools/remote-test-server",
             is_ext_tool: false,
+            extra_features: Vec::new(),
         }).expect("expected to build -- essential tool")
     }
 }
@@ -409,6 +414,7 @@ impl Step for Cargo {
             mode: Mode::Librustc,
             path: "src/tools/cargo",
             is_ext_tool: false,
+            extra_features: Vec::new(),
         }).expect("expected to build -- essential tool")
     }
 }
@@ -421,10 +427,11 @@ macro_rules! tool_extended {
        $tool_name:expr,
        $extra_deps:block;)+) => {
         $(
-            #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+            #[derive(Debug, Clone, Hash, PartialEq, Eq)]
         pub struct $name {
             pub compiler: Compiler,
             pub target: Interned<String>,
+            pub extra_features: Vec<String>,
         }
 
         impl Step for $name {
@@ -441,10 +448,12 @@ macro_rules! tool_extended {
                 run.builder.ensure($name {
                     compiler: run.builder.compiler(run.builder.top_stage, run.builder.build.build),
                     target: run.target,
+                    extra_features: Vec::new(),
                 });
             }
 
-            fn run($sel, $builder: &Builder) -> Option<PathBuf> {
+            #[allow(unused_mut)]
+            fn run(mut $sel, $builder: &Builder) -> Option<PathBuf> {
                 $extra_deps
                 $builder.ensure(ToolBuild {
                     compiler: $sel.compiler,
@@ -452,6 +461,7 @@ macro_rules! tool_extended {
                     tool: $tool_name,
                     mode: Mode::Librustc,
                     path: $path,
+                    extra_features: $sel.extra_features,
                     is_ext_tool: true,
                 })
             }
@@ -472,6 +482,14 @@ tool_extended!((self, builder),
     };
     Miri, miri, "src/tools/miri", "miri", {};
     Rls, rls, "src/tools/rls", "rls", {
+        let clippy = builder.ensure(Clippy {
+            compiler: self.compiler,
+            target: self.target,
+            extra_features: Vec::new(),
+        });
+        if clippy.is_some() {
+            self.extra_features.push("clippy".to_owned());
+        }
         builder.ensure(native::Openssl {
             target: self.target,
         });
diff --git a/src/tools/clippy b/src/tools/clippy
index d5e233a72049..6f3f25878f22 160000
--- a/src/tools/clippy
+++ b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit d5e233a720495c52af25d8f6dcc9e55e1193beb9
+Subproject commit 6f3f25878f2271911e4b6de4d0cf86accc397455
diff --git a/src/tools/miri b/src/tools/miri
index 61833b9aeab8..d4712ca37500 160000
--- a/src/tools/miri
+++ b/src/tools/miri
@@ -1 +1 @@
-Subproject commit 61833b9aeab8bf8f0c0c0e42b7c96b6eceb37d0d
+Subproject commit d4712ca37500f26bbcbf97edcb27820717f769f7
diff --git a/src/tools/rls b/src/tools/rls
index b6c524434249..fc4db0a5e99e 160000
--- a/src/tools/rls
+++ b/src/tools/rls
@@ -1 +1 @@
-Subproject commit b6c52443424977bd92cf7ed127f7771fe9c285da
+Subproject commit fc4db0a5e99e426fd97de370c6f36f585b6af13a