diff --git a/components/servo/Cargo.lock b/components/servo/Cargo.lock
index c88c090559ee..2fb1750ac59f 100644
--- a/components/servo/Cargo.lock
+++ b/components/servo/Cargo.lock
@@ -82,7 +82,7 @@ name = "app_units"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -123,7 +123,7 @@ dependencies = [
  "core-text 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "freetype 0.1.0 (git+https://github.com/servo/rust-freetype)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -249,7 +249,7 @@ dependencies = [
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
@@ -451,7 +451,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -531,7 +531,7 @@ name = "devtools_traits"
 version = "0.0.1"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -685,7 +685,7 @@ name = "euclid"
 version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -798,7 +798,7 @@ dependencies = [
  "freetype 0.1.0 (git+https://github.com/servo/rust-freetype)",
  "gfx_traits 0.0.1",
  "harfbuzz-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "layers 0.5.3 (git+https://github.com/servo/rust-layers)",
@@ -845,7 +845,7 @@ version = "0.0.1"
 dependencies = [
  "azure 0.8.0 (git+https://github.com/servo/rust-azure)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "layers 0.5.3 (git+https://github.com/servo/rust-layers)",
  "msg 0.0.1",
@@ -937,7 +937,7 @@ dependencies = [
 
 [[package]]
 name = "heapsize"
-version = "0.3.6"
+version = "0.3.7"
 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)",
@@ -980,7 +980,7 @@ name = "html5ever"
 version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mac 0.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1117,7 +1117,7 @@ version = "0.1.3"
 source = "git+https://github.com/servo/rust-mozjs#fc380e0e7700f3179a86e8261eafe0828532bbfe"
 dependencies = [
  "cmake 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1154,7 +1154,7 @@ dependencies = [
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gleam 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "glx 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "io-surface 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1177,7 +1177,7 @@ dependencies = [
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1221,7 +1221,7 @@ dependencies = [
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "layout 0.0.1",
@@ -1419,7 +1419,7 @@ version = "0.0.1"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1509,7 +1509,7 @@ name = "net_traits"
 version = "0.0.1"
 dependencies = [
  "cookie 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1919,7 +1919,7 @@ dependencies = [
 name = "range"
 version = "0.0.1"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2000,7 +2000,7 @@ dependencies = [
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "html5ever 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2053,7 +2053,7 @@ dependencies = [
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2091,7 +2091,7 @@ dependencies = [
  "devtools_traits 0.0.1",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2308,7 +2308,7 @@ version = "0.2.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "debug_unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_generator 0.7.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_shared 0.7.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2327,7 +2327,7 @@ dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2378,7 +2378,7 @@ dependencies = [
  "app_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2526,7 +2526,7 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "idna 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2563,7 +2563,7 @@ dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2727,7 +2727,7 @@ dependencies = [
  "core-graphics 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gleam 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "offscreen_gl_context 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2898,7 +2898,7 @@ dependencies = [
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum glx 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b280007fa9c7442cfd1e0b1addb8d1a59240267110e8705f8f7e2c7bfb7e2f72"
 "checksum harfbuzz-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "6b76113246f5c089dcf272cf89c3f61168a4d77b50ec5b2c1fab8c628c9ea762"
-"checksum heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "abb306abb8d398e053cfb1b3e7b72c2f580be048b85745c52652954f8ad1439c"
+"checksum heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "8c80e194758495a9109566134dc06e42ea0423987d6ceca016edaa90381b3549"
 "checksum heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c9a70a1ef0122b54e0553f1d960b686c40d33a7953bc63029509a7649c8ee2c4"
 "checksum heartbeats-simple 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "78c0810722eacd0bdd3f1f691524bd9900bf8fed1947f6b883c10ddecd2560b1"
 "checksum heartbeats-simple-sys 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9d975666b80fe43ca3af2294ba5995a0f3a2a00fe8a229ac4788bdfd5f01a45d"
diff --git a/ports/cef/Cargo.lock b/ports/cef/Cargo.lock
index f2ecc4c327bb..808cfd99149d 100644
--- a/ports/cef/Cargo.lock
+++ b/ports/cef/Cargo.lock
@@ -55,7 +55,7 @@ name = "app_units"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -96,7 +96,7 @@ dependencies = [
  "core-text 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "freetype 0.1.0 (git+https://github.com/servo/rust-freetype)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -222,7 +222,7 @@ dependencies = [
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "plugins 0.0.1",
@@ -408,7 +408,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -488,7 +488,7 @@ name = "devtools_traits"
 version = "0.0.1"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -601,7 +601,7 @@ name = "euclid"
 version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -714,7 +714,7 @@ dependencies = [
  "freetype 0.1.0 (git+https://github.com/servo/rust-freetype)",
  "gfx_traits 0.0.1",
  "harfbuzz-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "layers 0.5.3 (git+https://github.com/servo/rust-layers)",
@@ -752,7 +752,7 @@ version = "0.0.1"
 dependencies = [
  "azure 0.8.0 (git+https://github.com/servo/rust-azure)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "layers 0.5.3 (git+https://github.com/servo/rust-layers)",
  "msg 0.0.1",
@@ -844,7 +844,7 @@ dependencies = [
 
 [[package]]
 name = "heapsize"
-version = "0.3.6"
+version = "0.3.7"
 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)",
@@ -887,7 +887,7 @@ name = "html5ever"
 version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "mac 0.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1024,7 +1024,7 @@ version = "0.1.3"
 source = "git+https://github.com/servo/rust-mozjs#fc380e0e7700f3179a86e8261eafe0828532bbfe"
 dependencies = [
  "cmake 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1061,7 +1061,7 @@ dependencies = [
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gleam 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "glx 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "io-surface 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1084,7 +1084,7 @@ dependencies = [
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1121,7 +1121,7 @@ dependencies = [
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx 0.0.1",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "layout 0.0.1",
@@ -1319,7 +1319,7 @@ version = "0.0.1"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1387,7 +1387,7 @@ name = "net_traits"
 version = "0.0.1"
 dependencies = [
  "cookie 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1770,7 +1770,7 @@ dependencies = [
 name = "range"
 version = "0.0.1"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1851,7 +1851,7 @@ dependencies = [
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "html5ever 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1904,7 +1904,7 @@ dependencies = [
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1932,7 +1932,7 @@ dependencies = [
  "devtools_traits 0.0.1",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gfx_traits 0.0.1",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper_serde 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2191,7 +2191,7 @@ version = "0.2.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "debug_unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_generator 0.7.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf_shared 0.7.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2210,7 +2210,7 @@ dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2245,7 +2245,7 @@ dependencies = [
  "app_units 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cssparser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2393,7 +2393,7 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "idna 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2430,7 +2430,7 @@ dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2587,7 +2587,7 @@ dependencies = [
  "core-graphics 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "gleam 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipc-channel 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "offscreen_gl_context 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2752,7 +2752,7 @@ dependencies = [
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum glx 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b280007fa9c7442cfd1e0b1addb8d1a59240267110e8705f8f7e2c7bfb7e2f72"
 "checksum harfbuzz-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "6b76113246f5c089dcf272cf89c3f61168a4d77b50ec5b2c1fab8c628c9ea762"
-"checksum heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "abb306abb8d398e053cfb1b3e7b72c2f580be048b85745c52652954f8ad1439c"
+"checksum heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "8c80e194758495a9109566134dc06e42ea0423987d6ceca016edaa90381b3549"
 "checksum heapsize_plugin 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c9a70a1ef0122b54e0553f1d960b686c40d33a7953bc63029509a7649c8ee2c4"
 "checksum heartbeats-simple 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "78c0810722eacd0bdd3f1f691524bd9900bf8fed1947f6b883c10ddecd2560b1"
 "checksum heartbeats-simple-sys 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9d975666b80fe43ca3af2294ba5995a0f3a2a00fe8a229ac4788bdfd5f01a45d"
diff --git a/ports/geckolib/Cargo.lock b/ports/geckolib/Cargo.lock
index 22cd756a8f39..06fd04d12684 100644
--- a/ports/geckolib/Cargo.lock
+++ b/ports/geckolib/Cargo.lock
@@ -29,7 +29,7 @@ name = "app_units"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -51,7 +51,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -142,7 +142,7 @@ name = "euclid"
 version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.19 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -161,7 +161,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "heapsize"
-version = "0.3.6"
+version = "0.3.7"
 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)",
@@ -369,7 +369,7 @@ dependencies = [
  "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.16 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -482,7 +482,7 @@ dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -539,7 +539,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum euclid 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "44ef2a3e4a621518e488db36820a12b49a9d5004764b8daf1458bbe5d7c9b626"
 "checksum fnv 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8e8af7b5408ab0c4910cad114c8f9eb454bf75df7afe8964307eeafb68a13a5e"
 "checksum getopts 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9047cfbd08a437050b363d35ef160452c5fe8ea5187ae0a624708c91581d685"
-"checksum heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "abb306abb8d398e053cfb1b3e7b72c2f580be048b85745c52652954f8ad1439c"
+"checksum heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "8c80e194758495a9109566134dc06e42ea0423987d6ceca016edaa90381b3549"
 "checksum idna 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1053236e00ce4f668aeca4a769a09b3bf5a682d802abd6f3cb39374f6b162c11"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "49247ec2a285bb3dcb23cbd9c35193c025e7251bfce77c1d5da97e6362dffe7f"