diff --git a/servo/components/servo/Cargo.lock b/servo/components/servo/Cargo.lock
index 126dcf452047..26573a2b5ed7 100644
--- a/servo/components/servo/Cargo.lock
+++ b/servo/components/servo/Cargo.lock
@@ -766,7 +766,7 @@ dependencies = [
  "mime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net_traits 0.0.1",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "profile_traits 0.0.1",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1125,7 +1125,7 @@ dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net_traits 0.0.1",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "profile_traits 0.0.1",
  "range 0.0.1",
@@ -1610,11 +1610,11 @@ dependencies = [
 
 [[package]]
 name = "ordered-float"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "unreachable 0.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2204,7 +2204,7 @@ dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2373,14 +2373,6 @@ dependencies = [
  "harfbuzz-sys 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "unreachable"
-version = "0.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "void 0.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "unreachable"
 version = "0.1.1"
@@ -2473,11 +2465,6 @@ dependencies = [
  "pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "void"
-version = "0.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "void"
 version = "1.0.2"
diff --git a/servo/ports/cef/Cargo.lock b/servo/ports/cef/Cargo.lock
index 26ee4eaea2e0..89ea662774f3 100644
--- a/servo/ports/cef/Cargo.lock
+++ b/servo/ports/cef/Cargo.lock
@@ -684,7 +684,7 @@ dependencies = [
  "mime 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net_traits 0.0.1",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "profile_traits 0.0.1",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1034,7 +1034,7 @@ dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "msg 0.0.1",
  "net_traits 0.0.1",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "profile_traits 0.0.1",
  "range 0.0.1",
@@ -1484,11 +1484,11 @@ dependencies = [
 
 [[package]]
 name = "ordered-float"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "unreachable 0.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2089,7 +2089,7 @@ dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2242,14 +2242,6 @@ dependencies = [
  "harfbuzz-sys 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "unreachable"
-version = "0.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "void 0.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "unreachable"
 version = "0.1.1"
@@ -2335,11 +2327,6 @@ dependencies = [
  "pkg-config 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "void"
-version = "0.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "void"
 version = "1.0.2"
diff --git a/servo/ports/geckolib/Cargo.lock b/servo/ports/geckolib/Cargo.lock
index 8b7002cd4c39..146ff5e4aec4 100644
--- a/servo/ports/geckolib/Cargo.lock
+++ b/servo/ports/geckolib/Cargo.lock
@@ -234,33 +234,6 @@ dependencies = [
  "libc 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "num"
-version = "0.1.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "num-integer 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-iter 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "num-iter"
-version = "0.1.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "num-integer 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "num-traits"
 version = "0.1.32"
@@ -276,11 +249,11 @@ dependencies = [
 
 [[package]]
 name = "ordered-float"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "unreachable 0.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -391,7 +364,7 @@ dependencies = [
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "ordered-float 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ordered-float 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "selectors 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -452,14 +425,6 @@ name = "unicode-normalization"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "unreachable"
-version = "0.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "void 0.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "unreachable"
 version = "0.1.1"
@@ -499,11 +464,6 @@ dependencies = [
  "xdg 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "void"
-version = "0.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "void"
 version = "1.0.2"
diff --git a/servo/python/tidy/servo_tidy/tidy.py b/servo/python/tidy/servo_tidy/tidy.py
index 61251983e191..b21d65259fbf 100644
--- a/servo/python/tidy/servo_tidy/tidy.py
+++ b/servo/python/tidy/servo_tidy/tidy.py
@@ -266,7 +266,7 @@ def check_lock(file_name, contents):
         raise StopIteration
 
     # package names to be neglected (as named by cargo)
-    exceptions = ["lazy_static", "unreachable", "void"]
+    exceptions = ["lazy_static"]
 
     import toml
     content = toml.loads(contents)