diff --git a/src/Cargo.lock b/src/Cargo.lock
index 89daa8e09c7d1..8dab6ae7557f3 100644
--- a/src/Cargo.lock
+++ b/src/Cargo.lock
@@ -80,8 +80,8 @@ dependencies = [
  "colored 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "environment 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -183,7 +183,7 @@ dependencies = [
  "crypto-hash 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "curl 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.1 (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 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs2 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -226,11 +226,11 @@ dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "crates-io 0.18.0",
- "crossbeam 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "crypto-hash 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "curl 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.1 (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 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "fs2 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -247,9 +247,10 @@ dependencies = [
  "libgit2-sys 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustfix 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.10.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-workspace-hack 1.0.0",
+ "rustfix 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "same-file 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -351,20 +352,18 @@ name = "clippy"
 version = "0.0.212"
 dependencies = [
  "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "cargo_metadata 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy-mini-macro-test 0.2.0",
  "clippy_lints 0.0.212",
  "compiletest_rs 0.3.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "derive-new 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive-new 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-workspace-hack 1.0.0",
  "rustc_version 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -452,7 +451,7 @@ dependencies = [
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustfix 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustfix 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -521,7 +520,7 @@ version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "curl 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -533,7 +532,7 @@ name = "crates-io"
 version = "0.18.0"
 dependencies = [
  "curl 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -606,6 +605,11 @@ name = "crossbeam-utils"
 version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "crypto-hash"
 version = "0.3.1"
@@ -613,7 +617,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "commoncrypto 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl 0.10.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.10.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -626,7 +630,7 @@ dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "schannel 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "socket2 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -640,7 +644,7 @@ dependencies = [
  "cc 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -653,12 +657,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "derive-new"
-version = "0.5.4"
+version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.13.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -763,21 +767,22 @@ dependencies = [
 
 [[package]]
 name = "failure"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "failure_derive"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "synstructure 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.14.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -872,6 +877,11 @@ name = "futures"
 version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "gcc"
+version = "0.3.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "getopts"
 version = "0.2.17"
@@ -887,7 +897,7 @@ dependencies = [
  "libgit2-sys 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1139,7 +1149,7 @@ dependencies = [
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "libssh2-sys 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1151,7 +1161,7 @@ dependencies = [
  "cmake 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1378,7 +1388,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "openssl"
-version = "0.10.10"
+version = "0.10.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1386,7 +1396,7 @@ dependencies = [
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.33 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.35 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1394,13 +1404,22 @@ name = "openssl-probe"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "openssl-src"
+version = "110.0.5+1.1.0h"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "openssl-sys"
-version = "0.9.33"
+version = "0.9.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-src 110.0.5+1.1.0h (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1766,14 +1785,14 @@ dependencies = [
 
 [[package]]
 name = "rls"
-version = "0.129.0"
+version = "0.130.0"
 dependencies = [
  "cargo 0.30.0",
  "cargo_metadata 0.5.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy_lints 0.0.212",
  "crossbeam-channel 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.8 (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 0.45.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1790,7 +1809,8 @@ dependencies = [
  "rls-rustc 0.4.0 (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 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustfmt-nightly 0.9.0",
+ "rustc-workspace-hack 1.0.0",
+ "rustfmt-nightly 0.99.1",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1803,7 +1823,7 @@ name = "rls-analysis"
 version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "derive-new 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derive-new 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "fst 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1848,7 +1868,6 @@ name = "rls-vfs"
 version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "racer 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1899,6 +1918,14 @@ dependencies = [
  "rustc-ap-rustc_data_structures 209.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustc-ap-arena"
+version = "211.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rustc-ap-rustc_data_structures 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-ap-rustc_cratesio_shim"
 version = "209.0.0"
@@ -1908,6 +1935,15 @@ dependencies = [
  "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustc-ap-rustc_cratesio_shim"
+version = "211.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-ap-rustc_data_structures"
 version = "209.0.0"
@@ -1926,6 +1962,24 @@ dependencies = [
  "stable_deref_trait 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustc-ap-rustc_data_structures"
+version = "211.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ena 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_cratesio_shim 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-rayon 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-rayon-core 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "stable_deref_trait 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-ap-rustc_errors"
 version = "209.0.0"
@@ -1939,6 +1993,19 @@ dependencies = [
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustc-ap-rustc_errors"
+version = "211.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax_pos 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termcolor 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-ap-rustc_target"
 version = "209.0.0"
@@ -1950,11 +2017,27 @@ dependencies = [
  "rustc-ap-serialize 209.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustc-ap-rustc_target"
+version = "211.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "rustc-ap-serialize 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-ap-serialize"
 version = "209.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "rustc-ap-serialize"
+version = "211.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "rustc-ap-syntax"
 version = "209.0.0"
@@ -1970,6 +2053,21 @@ dependencies = [
  "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "rustc-ap-rustc_errors 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "rustc-ap-serialize 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax_pos 211.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
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+
 [[package]]
 name = "rustc-ap-syntax_pos"
 version = "209.0.0"
@@ -1983,6 +2081,19 @@ dependencies = [
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 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rustc-demangle"
 version = "0.1.8"
@@ -2030,6 +2141,14 @@ name = "rustc-serialize"
 version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
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+version = "1.0.0"
+dependencies = [
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+
 [[package]]
 name = "rustc_allocator"
 version = "0.0.0"
@@ -2441,10 +2560,10 @@ dependencies = [
 
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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@@ -2453,23 +2572,23 @@ dependencies = [
 
 [[package]]
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- "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
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- "rustc-ap-syntax_pos 209.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2718,11 +2837,13 @@ dependencies = [
 
 [[package]]
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+ "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
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@@ -3147,8 +3269,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum environment 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1f4b14e20978669064c33b4c1e0fb4083412e40fe56cbea2eae80fd7591503ee"
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-"checksum failure_derive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c7cdda555bb90c9bb67a3b670a0f42de8e73f5981524123ad8578aafec8ddb8b"
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 "checksum same-file 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "cfb6eded0b06a0b512c8ddbcf04089138c9b4362c2f696f3c3d76039d68f3637"
 "checksum schannel 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "dc1fabf2a7b6483a141426e1afd09ad543520a77ac49bd03c286e7696ccfd77f"
 "checksum scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
@@ -3300,7 +3432,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum syn 0.13.11 (registry+https://github.com/rust-lang/crates.io-index)" = "14f9bf6292f3a61d2c716723fdb789a41bbe104168e6f496dc6497e531ea1b9b"
 "checksum syn 0.14.4 (registry+https://github.com/rust-lang/crates.io-index)" = "2beff8ebc3658f07512a413866875adddd20f4fd47b2a4e6c9da65cd281baaea"
 "checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
-"checksum synstructure 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3a761d12e6d8dcb4dcf952a7a89b475e3a9d69e4a69307e01a470977642914bd"
+"checksum synstructure 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "85bb9b7550d063ea184027c9b8c20ac167cd36d3e06b3a40bceb9d746dc1a7b7"
 "checksum tar 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)" = "e8f41ca4a5689f06998f0247fcb60da6c760f1950cc9df2a10d71575ad0b062a"
 "checksum tempfile 3.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "47776f63b85777d984a50ce49d6b9e58826b6a3766a449fc95bc66cd5663c15b"
 "checksum tendril 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9de21546595a0873061940d994bbbc5c35f024ae4fd61ec5c5b159115684f508"
diff --git a/src/Cargo.toml b/src/Cargo.toml
index 62403700f3a40..01663487f92e1 100644
--- a/src/Cargo.toml
+++ b/src/Cargo.toml
@@ -52,11 +52,15 @@ debug-assertions = false
 [patch."https://github.com/rust-lang/cargo"]
 cargo = { path = "tools/cargo" }
 
-[patch."https://github.com/rust-lang-nursery/rustfmt"]
+[patch.crates-io]
 # Similar to Cargo above we want the RLS to use a vendored version of `rustfmt`
 # that we're shipping as well (to ensure that the rustfmt in RLS and the
 # `rustfmt` executable are the same exact version).
 rustfmt-nightly = { path = "tools/rustfmt" }
 
+# See comments in `tools/rustc-workspace-hack/README.md` for what's going on
+# here
+rustc-workspace-hack = { path = 'tools/rustc-workspace-hack' }
+
 [patch."https://github.com/rust-lang-nursery/rust-clippy"]
 clippy_lints = { path = "tools/clippy/clippy_lints" }
diff --git a/src/bootstrap/Cargo.toml b/src/bootstrap/Cargo.toml
index 57a526038041e..2e5b39ca5d79c 100644
--- a/src/bootstrap/Cargo.toml
+++ b/src/bootstrap/Cargo.toml
@@ -41,9 +41,9 @@ num_cpus = "1.0"
 getopts = "0.2"
 cc = "1.0.1"
 libc = "0.2"
-serde = "1.0.8"
-serde_derive = "1.0.8"
-serde_json = "1.0.2"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
 toml = "0.4"
 lazy_static = "0.2"
 time = "0.1"
diff --git a/src/tools/cargo b/src/tools/cargo
index 2cd36b4ed1aef..524a578d75df2 160000
--- a/src/tools/cargo
+++ b/src/tools/cargo
@@ -1 +1 @@
-Subproject commit 2cd36b4ed1aef1ae39a30783e006411d1a4218ac
+Subproject commit 524a578d75df2869eedd5fbf51054b1d5909cff7
diff --git a/src/tools/clippy b/src/tools/clippy
index afd91248eda02..c27cdcaf71fb9 160000
--- a/src/tools/clippy
+++ b/src/tools/clippy
@@ -1 +1 @@
-Subproject commit afd91248eda02cf2968e4e02c77b6c10ecd3fd4f
+Subproject commit c27cdcaf71fb9bb10d3da2ecd9e9d2def741ef9f
diff --git a/src/tools/rls b/src/tools/rls
index 4c7cc91d5518b..920a3914956ca 160000
--- a/src/tools/rls
+++ b/src/tools/rls
@@ -1 +1 @@
-Subproject commit 4c7cc91d5518bd29d3d59599cfb7a2e7e848d7b7
+Subproject commit 920a3914956caaa9e9facccdaca7114875247807
diff --git a/src/tools/rustc-workspace-hack/Cargo.toml b/src/tools/rustc-workspace-hack/Cargo.toml
new file mode 100644
index 0000000000000..8c947bbbcddba
--- /dev/null
+++ b/src/tools/rustc-workspace-hack/Cargo.toml
@@ -0,0 +1,44 @@
+[package]
+name = "rustc-workspace-hack"
+version = "1.0.0"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+license = 'MIT/Apache-2.0'
+description = """
+Hack for the compiler's own build system
+"""
+
+[lib]
+path = "lib.rs"
+
+# For documentation about what this is and why in the world these dependencies
+# are appearing, see `README.md`.
+
+[build-dependencies]
+# Currently Cargo/RLS depend on `failure` which depends on `synstructure` which
+# enables this feature. Clippy, however, does not depend on anything that
+# enables this feature. Enable it unconditionally.
+syn = { version = "0.14", features = ['extra-traits'] }
+
+[target.'cfg(windows)'.dependencies.winapi]
+version = "0.3"
+features = [
+  "profileapi",
+  "memoryapi",
+  "minschannel",
+  "securitybaseapi",
+  "jobapi2",
+  "schannel",
+  "sysinfoapi",
+  "jobapi",
+  "synchapi",
+  "wincrypt",
+  "winbase",
+  "minwinbase",
+  "ntsecapi",
+  "basetsd",
+  "ntstatus",
+  "psapi",
+  "timezoneapi",
+  "lmcons",
+  "wincon",
+]
diff --git a/src/tools/rustc-workspace-hack/README.md b/src/tools/rustc-workspace-hack/README.md
new file mode 100644
index 0000000000000..4a5286fae9c3e
--- /dev/null
+++ b/src/tools/rustc-workspace-hack/README.md
@@ -0,0 +1,25 @@
+# `rustc-workspace-hack`
+
+This crate is a bit of a hack to make workspaces in rustc work a bit better.
+The rationale for this existence is a bit subtle, but the general idea is that
+we want commands like `./x.py build src/tools/{rls,clippy,cargo}` to share as
+many dependencies as possible.
+
+Each invocation is a different invocation of Cargo, however. Each time Cargo
+runs a build it will re-resolve the dependency graph, notably selecting
+different features sometimes for each build.
+
+For example, let's say there's a very deep dependency like `num-traits` in each
+of these builds. For Cargo the `num-traits`'s `default` feature is turned off.
+In RLS, however, the `default` feature is turned. This means that building Cargo
+and then the RLS will actually build Cargo twice (as a transitive dependency
+changed). This is bad!
+
+The goal of this crate is to solve this problem and ensure that the resolved
+dependency graph for all of these tools is the same in the various subsets of
+each tool, notably enabling the same features of transitive dependencies.
+
+All tools vendored here depend on the `rustc-workspace-hack` crate on crates.io.
+When on crates.io this crate is an empty crate that is just a noop. We override
+it, however, in this workspace to this crate here, which means we can control
+crates in the dependency graph for each of these tools.
diff --git a/src/tools/rustc-workspace-hack/lib.rs b/src/tools/rustc-workspace-hack/lib.rs
new file mode 100644
index 0000000000000..ab262975a092a
--- /dev/null
+++ b/src/tools/rustc-workspace-hack/lib.rs
@@ -0,0 +1,11 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// intentionally left blank
diff --git a/src/tools/rustfmt b/src/tools/rustfmt
index 69ad879d52606..da17b689595dd 160000
--- a/src/tools/rustfmt
+++ b/src/tools/rustfmt
@@ -1 +1 @@
-Subproject commit 69ad879d52606ac03440744efa5b4d8ca8cc7566
+Subproject commit da17b689595ddc863b02eb1ba6831c87cefc1e21
diff --git a/src/tools/tidy/Cargo.toml b/src/tools/tidy/Cargo.toml
index f7b491823f838..434524cc7b12f 100644
--- a/src/tools/tidy/Cargo.toml
+++ b/src/tools/tidy/Cargo.toml
@@ -4,6 +4,6 @@ version = "0.1.0"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 
 [dependencies]
-serde = "1.0.8"
-serde_derive = "1.0.8"
-serde_json = "1.0.2"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"