diff --git a/Cargo.lock b/Cargo.lock
index b89f8b5a..b8b3cbed 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -24,19 +24,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7825f6833612eb2414095684fcf6c635becf3ce97fe48cf6421321e93bfbd53c"
 
 [[package]]
-name = "arrayvec"
-version = "0.4.11"
+name = "autocfg"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8d73f9beda665eaa98ab9e4f7442bd4e7de6652587de55b2525e52e29c1b0ba"
-dependencies = [
- "nodrop",
-]
+checksum = "b671c8fb71b457dd4ae18c4ba1e59aa81793daacc361d82fcd410cef0d491875"
 
 [[package]]
 name = "autocfg"
-version = "0.1.6"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b671c8fb71b457dd4ae18c4ba1e59aa81793daacc361d82fcd410cef0d491875"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "backtrace"
@@ -188,29 +185,31 @@ version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c8ec7fcd21571dc78f96cc96243cab8d8f035247c3efd16c687be154c3fa9efa"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
 ]
 
 [[package]]
 name = "crossbeam-deque"
-version = "0.7.1"
+version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b18cd2e169ad86297e6bc0ad9aa679aee9daa4f19e8163860faf7c164e4f5a71"
+checksum = "c20ff29ded3204c5106278a81a38f4b482636ed4fa1e6cfbeef193291beb29ed"
 dependencies = [
  "crossbeam-epoch",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
+ "maybe-uninit",
 ]
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.7.2"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fedcd6772e37f3da2a9af9bf12ebe046c0dfe657992377b4df982a2b54cd37a9"
+checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
 dependencies = [
- "arrayvec",
+ "autocfg 1.1.0",
  "cfg-if",
- "crossbeam-utils",
+ "crossbeam-utils 0.7.2",
  "lazy_static",
+ "maybe-uninit",
  "memoffset",
  "scopeguard",
 ]
@@ -221,7 +220,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c979cd6cfe72335896575c6b5688da489e420d36a27a0b9eb0c73db574b4a4b"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
 ]
 
 [[package]]
@@ -234,6 +233,17 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
+dependencies = [
+ "autocfg 1.1.0",
+ "cfg-if",
+ "lazy_static",
+]
+
 [[package]]
 name = "curl"
 version = "0.4.25"
@@ -706,7 +716,7 @@ checksum = "17b77027f12e53ae59a379f7074259d32eb10867e6183388020e922832d9c3fb"
 dependencies = [
  "bytes",
  "crossbeam-channel",
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "curl",
  "curl-sys",
  "futures-io-preview",
@@ -815,6 +825,12 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
 
+[[package]]
+name = "maybe-uninit"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
+
 [[package]]
 name = "memchr"
 version = "2.2.1"
@@ -914,12 +930,6 @@ dependencies = [
  "winapi 0.3.8",
 ]
 
-[[package]]
-name = "nodrop"
-version = "0.1.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
-
 [[package]]
 name = "nom"
 version = "4.2.3"
@@ -965,7 +975,7 @@ version = "0.9.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2c42dcccb832556b5926bc9ae61e8775f2a61e725ab07ab3d1e7fcf8ae62c3b6"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
  "cc",
  "libc",
  "pkg-config",
@@ -1100,7 +1110,7 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
  "libc",
  "rand_chacha 0.1.1",
  "rand_core 0.4.2",
@@ -1132,7 +1142,7 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
  "rand_core 0.3.1",
 ]
 
@@ -1228,7 +1238,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "abf9b09b01790cfe0364f52bf32995ea3c39f4d2dd011eac241d2914146d0b44"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.6",
  "rand_core 0.4.2",
 ]
 
@@ -1631,7 +1641,7 @@ version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0f27ee0e6db01c5f0b2973824547ce7e637b2ed79b891a9677b0de9bd532b6ac"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "futures 0.1.29",
 ]
 
@@ -1652,7 +1662,7 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c56391be9805bc80163151c0b9e5164ee64f4b0200962c346fea12773158f22d"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "futures 0.1.29",
  "lazy_static",
  "log",
@@ -1697,7 +1707,7 @@ checksum = "2bd2c6a3885302581f4401c82af70d792bb9df1700e7437b0aeb4ada94d5388c"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-queue",
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "futures 0.1.29",
  "lazy_static",
  "log",
@@ -1712,7 +1722,7 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2106812d500ed25a4f38235b9cae8f78a09edf43203e16e59c3b769a342a60e"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.6.6",
  "futures 0.1.29",
  "slab",
  "tokio-executor",