diff --git a/Cargo.lock b/Cargo.lock
index f970d036bc..1eaca389ed 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -73,16 +73,6 @@ dependencies = [
  "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "async-trait"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "atty"
 version = "0.2.13"
@@ -1855,7 +1845,6 @@ dependencies = [
  "adhoc_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "ansi_term 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "app_dirs 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "async-trait 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "battery 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "byte-unit 3.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2310,14 +2299,6 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "proc-macro2"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ptree"
 version = "0.2.1"
@@ -2359,14 +2340,6 @@ dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "quote"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rand"
 version = "0.5.6"
@@ -3010,16 +2983,6 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "syn"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "synstructure"
 version = "0.10.2"
@@ -3665,7 +3628,6 @@ dependencies = [
 "checksum app_dirs 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e73a24bad9bd6a94d6395382a6c69fe071708ae4409f763c5475e14ee896313d"
 "checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "b8d73f9beda665eaa98ab9e4f7442bd4e7de6652587de55b2525e52e29c1b0ba"
-"checksum async-trait 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "1c8373d24fa19a33892630018cd64600ac82b778d812075a11f99b49dfd0058b"
 "checksum atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "1803c647a3ec87095e7ae7acfca019e98de5ec9a7d01343f611cf3152ed71a90"
 "checksum autocfg 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "22130e92352b948e7e82a49cdb0aa94f2211761117f29e052dd397c1ac33542b"
 "checksum backtrace 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)" = "b5164d292487f037ece34ec0de2fcede2faa162f085dd96d2385ab81b12765ba"
@@ -3896,12 +3858,10 @@ dependencies = [
 "checksum prettyprint 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f32f02328f651d5283173c7a9b2ef354b079fa535706547dde16d61ae23ecded"
 "checksum prettytable-rs 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0fd04b170004fa2daccf418a7f8253aaf033c27760b5f225889024cf66d7ac2e"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
-"checksum proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4c5c2380ae88876faae57698be9e9775e3544decad214599c3a6266cca6ac802"
 "checksum ptree 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6b0a3be00b19ee7bd33238c1c523a7ab4df697345f6b36f90827a7860ea938d4"
 "checksum publicsuffix 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5afecba86dcf1e4fd610246f89899d1924fe12e1e89f555eb7c7f710f3c5ad1d"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
 "checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
-"checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
 "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 "checksum rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d47eab0e83d9693d40f825f86948aa16eff6750ead4bdffc4ab95b8b3a7f052c"
@@ -3976,7 +3936,6 @@ dependencies = [
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum subprocess 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)" = "28fc0f40f0c0da73339d347aa7d6d2b90341a95683a47722bc4eebed71ff3c00"
 "checksum syn 0.15.43 (registry+https://github.com/rust-lang/crates.io-index)" = "ee06ea4b620ab59a2267c6b48be16244a3389f8bfa0986bdd15c35b890b00af3"
-"checksum syn 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "158521e6f544e7e3dcfc370ac180794aa38cb34a1b1e07609376d4adcf429b93"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum syntect 3.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e80b8831c5a543192ffc3727f01cf0e57579c6ac15558e3048bfb5708892167b"
 "checksum sysinfo 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ee7d12b854e48e680bf4b10856a7867e843845158fa8226e6c2f6cc38539cb01"
diff --git a/Cargo.toml b/Cargo.toml
index 785bbc419e..ff664e63d5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,6 @@ prettyprint = "0.7.0"
 futures-preview = { version = "=0.3.0-alpha.18", features = ["compat", "io-compat"] }
 futures-sink-preview = "=0.3.0-alpha.18"
 futures-async-stream = "0.1.0-alpha.1"
-async-trait = "0.1.10"
 futures_codec = "0.2.5"
 term = "0.5.2"
 bytes = "0.4.12"