diff --git a/Cargo.lock b/Cargo.lock
index 238b9246..26a13316 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -250,7 +250,7 @@ dependencies = [
  "libc 0.2.44 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "smallvec 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -290,7 +290,7 @@ dependencies = [
  "racer-cargo-metadata 0.1.1",
  "racer-testutils 0.1.0",
  "rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-syntax 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -460,20 +460,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "rustc-ap-arena"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rustc-ap-rustc_data_structures 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-ap-graphviz"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "rustc-ap-rustc_cratesio_shim"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -483,83 +483,83 @@ dependencies = [
 
 [[package]]
 name = "rustc-ap-rustc_data_structures"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ena 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-graphviz 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_cratesio_shim 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-serialize 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-graphviz 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_cratesio_shim 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 366.0.0 (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)",
- "smallvec 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-ap-rustc_errors"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_cratesio_shim 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_data_structures 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-serialize 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-syntax_pos 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_cratesio_shim 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax_pos 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "termcolor 1.0.4 (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 = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_cratesio_shim 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_data_structures 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-serialize 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_cratesio_shim 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-ap-serialize"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "smallvec 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-ap-syntax"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_data_structures 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_errors 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_target 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-serialize 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-syntax_pos 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_errors 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_target 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-syntax_pos 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "smallvec 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rustc-ap-syntax_pos"
-version = "306.0.0"
+version = "366.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-arena 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-rustc_data_structures 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-ap-serialize 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-arena 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-rustc_data_structures 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-ap-serialize 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "scoped-tls 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -659,7 +659,7 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "0.6.6"
+version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -863,15 +863,15 @@ dependencies = [
 "checksum regex-syntax 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fbc557aac2b708fe84121caf261346cc2eed71978024337e42eb46b8a252ac6e"
 "checksum remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3488ba1b9a2084d38645c4c08276a1752dcbf2c7130d74f1569681ad5d2799c5"
 "checksum rls-span 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5d7c7046dc6a92f2ae02ed302746db4382e75131b9ce20ce967259f6b5867a6a"
-"checksum rustc-ap-arena 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cbfb540c1347a3993060896b18e0d64084203fa37aaffdc5e5c31264f275d476"
-"checksum rustc-ap-graphviz 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "790ac657d5bf69be9ef56f6810e8a0238b07e8460a88526e11d41f8214eb6c4e"
-"checksum rustc-ap-rustc_cratesio_shim 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b721cf32b543f3ee90240d7b757ca4a45930fe9981458a50678b4ccd75c472e2"
-"checksum rustc-ap-rustc_data_structures 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4fa11df199d45ce948b07792ca593f59c1d19d2cb05d35c6b0a02271e772a416"
-"checksum rustc-ap-rustc_errors 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b7ead3163ef995bbba520b88739e1d60f9ccf74fdacdda985067644c8134e827"
-"checksum rustc-ap-rustc_target 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "688fef9cc27837755019b72b4f13e7a3d3e5012473475f377b75dbb1f07beb5f"
-"checksum rustc-ap-serialize 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5b2c0e8161e956647592a737074736e6ce05ea36b70c770ea8cca3eb9cb33737"
-"checksum rustc-ap-syntax 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1adc189e5e4500a4167b9afa04e67067f40d0039e0e05870c977bebb561f065a"
-"checksum rustc-ap-syntax_pos 306.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4d42c430dbb0be4377bfe6aa5099074c63ac8796b24098562c2e2154aecc5652"
+"checksum rustc-ap-arena 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f4c1c284b1bd0fee735ff2dcc0e3463ffcb608e87ab38e34a4e1a4046b6cb0b1"
+"checksum rustc-ap-graphviz 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a6b811e0827f59c51d4ebae105aed916adec1b856b7977d6bb89b9dde5facf5e"
+"checksum rustc-ap-rustc_cratesio_shim 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d4153554ceefebe588b663c0c753405bb43027e535fbc00176074512a096a285"
+"checksum rustc-ap-rustc_data_structures 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d7bfee70c65cd8cc5ccfa7229886c67a2a22883a026c76a92bc94b7e0a5b618"
+"checksum rustc-ap-rustc_errors 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "227a98739f3986bd01336922a7160f54b4b7a8c0c48cfc4691f51999cdf8089b"
+"checksum rustc-ap-rustc_target 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d1dd662b713db36ca8098c8b78d881157412a263c02b919782f32cc3ba7b35b6"
+"checksum rustc-ap-serialize 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c93c7172e63fea0b5d0bb512e2505d144cd7a072576b8d78aa4d2196f958dff9"
+"checksum rustc-ap-syntax 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "89bd6296deeb4996445c1f59907c1a916bb6debcd09ffd1a75e0efc4ef5085e9"
+"checksum rustc-ap-syntax_pos 366.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c7d00d2473c057c20bdb3845794e500ae123c3862b39e2a6cdaadeb272b16770"
 "checksum rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7540fc8b0c49f096ee9c961cda096467dce8084bec6bdca2fc83895fd9b28cb8"
 "checksum rustc-rayon 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8c6d5a683c6ba4ed37959097e88d71c9e8e26659a3cb5be8b389078e7ad45306"
 "checksum rustc-rayon-core 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "40f06724db71e18d68b3b946fdf890ca8c921d9edccc1404fdfdb537b0d12649"
@@ -884,7 +884,7 @@ dependencies = [
 "checksum serde 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)" = "15c141fc7027dd265a47c090bf864cf62b42c4d228bbcf4e51a0c9e2b0d3f7ef"
 "checksum serde_derive 1.0.80 (registry+https://github.com/rust-lang/crates.io-index)" = "225de307c6302bec3898c51ca302fc94a7a1697ef0845fcee6448f33c032249c"
 "checksum serde_json 1.0.33 (registry+https://github.com/rust-lang/crates.io-index)" = "c37ccd6be3ed1fdf419ee848f7c758eb31b054d7cd3ae3600e3bae0adf569811"
-"checksum smallvec 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)" = "622df2d454c29a4d89b30dc3b27b42d7d90d6b9e587dbf8f67652eb7514da484"
+"checksum smallvec 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)" = "88aea073965ab29f6edb5493faf96ad662fb18aa9eeb186a3b7057951605ed15"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum syn 0.15.22 (registry+https://github.com/rust-lang/crates.io-index)" = "ae8b29eb5210bc5cf63ed6149cbf9adfc82ac0be023d8735c176ee74a2db4da7"
diff --git a/Cargo.toml b/Cargo.toml
index 782b209a..8985cd7e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ debug = false # because of #1005
 [dependencies]
 bitflags = "1.0"
 log = "0.4"
-rustc-ap-syntax = "306.0.0"
+rustc-ap-syntax = "366.0.0"
 env_logger = "0.6"
 clap = "2.32"
 lazy_static = "1.2"
diff --git a/src/racer/ast_types.rs b/src/racer/ast_types.rs
index 1dd2709e..d76df24c 100644
--- a/src/racer/ast_types.rs
+++ b/src/racer/ast_types.rs
@@ -144,6 +144,7 @@ impl Ty {
             }
         }
     }
+
     pub(crate) fn from_lit(lit: &ast::Lit) -> Option<Ty> {
         let make_match = |kind: PrimKind| kind.to_module_match().map(Ty::Match);
         match lit.node {
@@ -159,6 +160,7 @@ impl Ty {
             },
             LitKind::FloatUnsuffixed(_) => make_match(PrimKind::F32),
             LitKind::Bool(_) => make_match(PrimKind::Bool),
+            LitKind::Err(_) => None,
         }
     }
     fn resolve_common(self, session: &Session) -> Option<Match> {