diff --git a/src/Cargo.lock b/src/Cargo.lock
index 56a68a7ca54..0593e117e8b 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -949,9 +949,14 @@ dependencies = [
  "rand 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "json"
+version = "0.11.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "jsonrpc-core"
-version = "7.1.1"
+version = "8.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1622,14 +1627,16 @@ version = "0.124.0"
 dependencies = [
  "cargo 0.25.0",
  "env_logger 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "jsonrpc-core 7.1.1 (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 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "racer 2.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-analysis 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-data 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-analysis 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-data 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-rustc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-vfs 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1642,28 +1649,17 @@ dependencies = [
 
 [[package]]
 name = "rls-analysis"
-version = "0.9.3"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "derive-new 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "radix_trie 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rls-data 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rls-data 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rls-data"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rls-data"
 version = "0.14.0"
@@ -1671,6 +1667,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2892,7 +2890,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum itertools 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d3f2be4da1690a039e9ae5fd575f706a63ad5a2120f161b1d653c9da3930dd21"
 "checksum itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8324a32baf01e2ae060e9de58ed0bc2320c9a2833491ee36cd3b4c414de4db8c"
 "checksum jobserver 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "931b04e5e57d88cc909528f0d701db36a870b72a052648ded8baf80f9f445e0f"
-"checksum jsonrpc-core 7.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b1acd0f9934da94466d2370f36832b9b19271b4abdfdb5e69f0bcd991ebcd515"
+"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 kuchiki 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e03098e8e719c92b7794515dfd5c1724e2b12f5ce1788e61cfa4663f82eba8d8"
 "checksum languageserver-types 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "773e175c945800aeea4c21c04090bcb9db987b1a566ad9c6f569972299950e3e"
@@ -2960,8 +2959,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum regex 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ac6ab4e9218ade5b423358bbd2567d1617418403c7a512603630181813316322"
 "checksum regex-syntax 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "f9ec002c35e86791825ed294b50008eea9ddfc8def4420124fbc6b08db834957"
 "checksum regex-syntax 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ad890a5eef7953f55427c50575c680c42841653abd2b028b68cd223d157f62db"
-"checksum rls-analysis 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "171fcab0206870b8bec0d2c60dea66f820ce648a85abffc66f7e2df95c283e06"
-"checksum rls-data 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff85bb3a0daf9f64207a5530d90ae1c10f5515cef064c88b6821090678382b44"
+"checksum rls-analysis 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "38841e3c5271715a574ac220d9b408b59ed9e2626909c3bc54b5853b4eaadb7b"
 "checksum rls-data 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8024f1feaca72d0aa4ae1e2a8d454a31b9a33ed02f8d0e9c8559bf53c267ec3c"
 "checksum rls-rustc 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b21ea952e9bf1569929abf1bb920262cde04b7b1b26d8e0260286302807299d2"
 "checksum rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d7c7046dc6a92f2ae02ed302746db4382e75131b9ce20ce967259f6b5867a6a"
diff --git a/src/tools/rls b/src/tools/rls
index 9782aa4c3c5..299a6a91089 160000
--- a/src/tools/rls
+++ b/src/tools/rls
@@ -1 +1 @@
-Subproject commit 9782aa4c3c5b203732b9a1a4f3c9d7fbc912e437
+Subproject commit 299a6a91089af06b3b515450fece3c45a059dbbf