diff --git a/Cargo.lock b/Cargo.lock
index 1eaca389e..38294027e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1590,27 +1590,6 @@ dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "logos"
-version = "0.10.0-rc2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "logos-derive 0.10.0-rc2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "logos-derive"
-version = "0.10.0-rc2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "utf8-ranges 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "lzw"
 version = "0.10.0"
@@ -1875,8 +1854,6 @@ dependencies = [
  "language-reporting 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "logos 0.10.0-rc2 (registry+https://github.com/rust-lang/crates.io-index)",
- "logos-derive 0.10.0-rc2 (registry+https://github.com/rust-lang/crates.io-index)",
  "mime 0.3.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "neso 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "nom 5.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2665,14 +2642,6 @@ name = "rustc-demangle"
 version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "rustc-hash"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
@@ -3377,11 +3346,6 @@ dependencies = [
  "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "utf8-ranges"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "utf8parse"
 version = "0.1.1"
@@ -3789,8 +3753,6 @@ dependencies = [
 "checksum lock_api 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "62ebf1391f6acad60e5c8b43706dde4582df75c06698ab44511d15016bc2442c"
 "checksum lock_api 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f8912e782533a93a167888781b836336a6ca5da6175c05944c86cf28c31104dc"
 "checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
-"checksum logos 0.10.0-rc2 (registry+https://github.com/rust-lang/crates.io-index)" = "e136962e0902a48fd1d8da8706fac078fdba547bf82f9d9d728cf551d367b41e"
-"checksum logos-derive 0.10.0-rc2 (registry+https://github.com/rust-lang/crates.io-index)" = "5f03ecd1d993aacc6c4f3a9540e60a4f3811ddac2276dbb66dad4d42671bd5bf"
 "checksum lzw 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7d947cbb889ed21c2a84be6ffbaebf5b4e0f4340638cba0444907e38b56be084"
 "checksum macaddr 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3ff4752cb15cffb3e68f7dcb22e0818ac871f8c98fb07a634a81f41fb202a09f"
 "checksum mach 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "86dd2487cdfea56def77b88438a2c915fb45113c5319bfe7e14306ca4cd0b0e1"
@@ -3896,7 +3858,6 @@ dependencies = [
 "checksum rust-argon2 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "81ed8d04228b44a740c8d46ff872a28e50fff3d659f307ab4da2cc502e019ff3"
 "checksum rust-ini 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3e52c148ef37f8c375d49d5a73aa70713125b7f19095948a923f80afdeb22ec2"
 "checksum rustc-demangle 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7f4dccf6f4891ebcc0c39f9b6eb1a83b9bf5d747cb439ec6fba4f3b977038af"
-"checksum rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7540fc8b0c49f096ee9c961cda096467dce8084bec6bdca2fc83895fd9b28cb8"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum rustyline 5.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f8ee0838a6594169a1c5f4bb9af0fe692cc99691941710a8cc6576395ede804e"
 "checksum ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c92464b447c0ee8c4fb3824ecc8383b81717b9f1e74ba2e72540aef7b9f82997"
@@ -3977,7 +3938,6 @@ dependencies = [
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "75b414f6c464c879d7f9babf951f23bc3743fb7313c081b2e6ca719067ea9d61"
 "checksum user32-sys 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ef4711d107b21b410a3a974b1204d9accc8b10dad75d8324b5d755de1617d47"
-"checksum utf8-ranges 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b4ae116fef2b7fea257ed6440d3cfcff7f190865f170cdad00bb6465bf18ecba"
 "checksum utf8parse 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8772a4ccbb4e89959023bc5b7cb8623a795caa7092d99f3aa9501b9484d4557d"
 "checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
 "checksum vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "33dd455d0f96e90a75803cfeb7f948768c08d70a6de9a8d2362461935698bf95"
diff --git a/Cargo.toml b/Cargo.toml
index ff664e63d..9d3dbc8d1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,8 +42,6 @@ serde-hjson = "0.9.1"
 serde_yaml = "0.8"
 serde_bytes = "0.11.2"
 getset = "0.0.7"
-logos = "0.10.0-rc2"
-logos-derive = "0.10.0-rc2"
 language-reporting = "0.3.1"
 app_dirs = "1.2.1"
 csv = "1.1"