diff --git a/Cargo.lock b/Cargo.lock
index 51f16b3..94df98f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,19 +1,12 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-[[package]]
-name = "ansi_term"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-dependencies = [
- "winapi",
-]
+version = 3
 
 [[package]]
 name = "async-compression"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b72c1f1154e234325b50864a349b9c8e56939e266a4c307c0f159812df2f9537"
+checksum = "5443ccbb270374a2b1055fc72da40e1f237809cd6bb0e97e66d264cd138473a6"
 dependencies = [
  "bzip2",
  "futures-core",
@@ -62,54 +55,30 @@ dependencies = [
 
 [[package]]
 name = "bitflags"
-version = "1.2.1"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "block-buffer"
-version = "0.7.3"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0940dc441f31689269e10ac70eb1002a3a1d3ad1390e030043662eb7fe4688b"
+checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
 dependencies = [
- "block-padding",
- "byte-tools",
- "byteorder",
  "generic-array",
 ]
 
-[[package]]
-name = "block-padding"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa79dedbb091f449f1f39e53edf88d5dbe95f895dae6135a8d7b881fb5af73f5"
-dependencies = [
- "byte-tools",
-]
-
-[[package]]
-name = "byte-tools"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
-
-[[package]]
-name = "byteorder"
-version = "1.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae44d1a3d5a19df61dd0c8beb138458ac2a53a7ac09eba97d55592540004306b"
-
 [[package]]
 name = "bytes"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
+checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
 [[package]]
 name = "bzip2"
-version = "0.4.1"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "275d84fe348b838dc49477d39770682839b3e73e21a3eadc07b12924f1a9fcbe"
+checksum = "6afcd980b5f3a45017c57e57a2fcccbb351cc43a356ce117ef760ef8052b89b0"
 dependencies = [
  "bzip2-sys",
  "libc",
@@ -117,9 +86,9 @@ dependencies = [
 
 [[package]]
 name = "bzip2-sys"
-version = "0.1.9+1.0.8"
+version = "0.1.11+1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad3b39a260062fca31f7b0b12f207e8f2590a67d32ec7d59c20484b07ea7285e"
+checksum = "736a955f3fa7875102d57c82b8cac37ec45224a07fd32d58f9f7a186b6cd4cdc"
 dependencies = [
  "cc",
  "libc",
@@ -128,15 +97,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.66"
+version = "1.0.72"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c0496836a84f8d0495758516b8621a622beb77c0fed418570e50764093ced48"
-
-[[package]]
-name = "cfg-if"
-version = "0.1.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+checksum = "22a9137b95ea06864e018375b72adfb7db6e6f68cfc8df5a04d00288050485ee"
 
 [[package]]
 name = "cfg-if"
@@ -159,34 +122,37 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "2.33.3"
+version = "3.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
+checksum = "12e8611f9ae4e068fa3e56931fded356ff745e70987ff76924a6e0ab1c8ef2e3"
 dependencies = [
- "ansi_term",
  "atty",
  "bitflags",
+ "indexmap",
+ "os_str_bytes",
  "strsim",
+ "termcolor",
  "textwrap",
- "unicode-width",
- "vec_map",
+]
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95059428f66df56b63431fdb4e1947ed2190586af5c5a8a8b71122bdf5a7f469"
+dependencies = [
+ "libc",
 ]
 
 [[package]]
 name = "digest"
-version = "0.8.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3d0c8c8752312f9713efd397ff63acb9f85585afbf179282e720e7704954dd5"
+checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
 dependencies = [
  "generic-array",
 ]
 
-[[package]]
-name = "fake-simd"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
-
 [[package]]
 name = "fern"
 version = "0.6.0"
@@ -204,33 +170,19 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "form_urlencoded"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ece68d15c92e84fa4f19d3780f1294e5ca82a78a6d515f1efaabcc144688be00"
+checksum = "5fc25a87fa4fd2094bffb06925852034d90a17f0d1e05197d4956d3555752191"
 dependencies = [
  "matches",
  "percent-encoding",
 ]
 
-[[package]]
-name = "futures"
-version = "0.3.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da9052a1a50244d8d5aa9bf55cbc2fb6f357c86cc52e46c62ed390a7180cf150"
-dependencies = [
- "futures-channel",
- "futures-core",
- "futures-io",
- "futures-sink",
- "futures-task",
- "futures-util",
-]
-
 [[package]]
 name = "futures-channel"
-version = "0.3.12"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2d31b7ec7efab6eefc7c57233bb10b847986139d88cc2f5a02a1ae6871a1846"
+checksum = "ba3dda0b6588335f360afc675d0564c17a77a2bda81ca178a4b6081bd86c7f0b"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -238,33 +190,27 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.12"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79e5145dde8da7d1b3892dad07a9c98fc04bc39892b1ecc9692cf53e2b780a65"
-
-[[package]]
-name = "futures-io"
-version = "0.3.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28be053525281ad8259d47e4de5de657b25e7bac113458555bb4b70bc6870500"
+checksum = "d0c8ff0461b82559810cdccfde3215c3f373807f5e5232b71479bff7bb2583d7"
 
 [[package]]
 name = "futures-sink"
-version = "0.3.12"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "caf5c69029bda2e743fddd0582d1083951d65cc9539aebf8812f36c3491342d6"
+checksum = "e3055baccb68d74ff6480350f8d6eb8fcfa3aa11bdc1a1ae3afdd0514617d508"
 
 [[package]]
 name = "futures-task"
-version = "0.3.12"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13de07eb8ea81ae445aca7b69f5f7bf15d7bf4912d8ca37d6645c77ae8a58d86"
+checksum = "6ee7c6485c30167ce4dfb83ac568a849fe53274c831081476ee13e0dce1aad72"
 
 [[package]]
 name = "futures-util"
-version = "0.3.12"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "632a8cd0f2a4b3fdea1657f08bde063848c3bd00f9bbf6e256b8be78802e624b"
+checksum = "d9b5cf40b47a271f77a8b1bec03ca09044d99d2372c0de244e66430761127164"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -275,18 +221,19 @@ dependencies = [
 
 [[package]]
 name = "generic-array"
-version = "0.12.3"
+version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
+checksum = "fd48d33ec7f05fbfa152300fdad764757cbded343c1aa1cff2fbaf4134851803"
 dependencies = [
  "typenum",
+ "version_check",
 ]
 
 [[package]]
 name = "h2"
-version = "0.3.0"
+version = "0.3.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b67e66362108efccd8ac053abafc8b7a8d86a37e6e48fc4f6f7485eb5e9e6a5"
+checksum = "0c9de88456263e249e241fcd211d3954e2c9b0ef7ccfc235a444eb367cae3689"
 dependencies = [
  "bytes",
  "fnv",
@@ -299,29 +246,28 @@ dependencies = [
  "tokio",
  "tokio-util",
  "tracing",
- "tracing-futures",
 ]
 
 [[package]]
 name = "hashbrown"
-version = "0.9.1"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
+checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
 
 [[package]]
 name = "headers"
-version = "0.3.3"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62689dc57c7456e69712607ffcbd0aa1dfcccf9af73727e9b25bc1825375cac3"
+checksum = "a4c4eb0471fcb85846d8b0690695ef354f9afb11cb03cac2e1d7c9253351afb0"
 dependencies = [
  "base64",
  "bitflags",
  "bytes",
  "headers-core",
  "http",
+ "httpdate",
  "mime",
  "sha-1",
- "time",
 ]
 
 [[package]]
@@ -335,51 +281,52 @@ dependencies = [
 
 [[package]]
 name = "hermit-abi"
-version = "0.1.18"
+version = "0.1.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "322f4de77956e22ed0e5032c359a0f1273f1f7f0d79bfa3b8ffbc730d7fbcc5c"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "http"
-version = "0.2.3"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7245cd7449cc792608c3c8a9eaf69bd4eabbabf802713748fd739c98b82f0747"
+checksum = "31f4c6746584866f0feabcc69893c5b51beef3831656a968ed7ae254cdc4fd03"
 dependencies = [
  "bytes",
  "fnv",
- "itoa",
+ "itoa 1.0.1",
 ]
 
 [[package]]
 name = "http-body"
-version = "0.4.0"
+version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2861bd27ee074e5ee891e8b539837a9430012e249d7f0ca2d795650f579c1994"
+checksum = "1ff4f84919677303da5f147645dbea6b1881f368d03ac84e1dc09031ebd7b2c6"
 dependencies = [
  "bytes",
  "http",
+ "pin-project-lite",
 ]
 
 [[package]]
 name = "httparse"
-version = "1.3.4"
+version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd179ae861f0c2e53da70d892f5f3029f9594be0c41dc5269cd371691b1dc2f9"
+checksum = "acd94fdbe1d4ff688b67b04eee2e17bd50995534a61539e45adfefb45e5e5503"
 
 [[package]]
 name = "httpdate"
-version = "0.3.2"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "494b4d60369511e7dea41cf646832512a94e542f68bb9c49e54518e0f468eb47"
+checksum = "c4a1e36c821dbe04574f602848a19f742f4fb3c98d40449f11bcad18d6b17421"
 
 [[package]]
 name = "hyper"
-version = "0.14.2"
+version = "0.14.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12219dc884514cb4a6a03737f4413c0e01c23a1b059b0156004b23f1e19dccbe"
+checksum = "b7ec3e62bdc98a2f0393a5048e4c30ef659440ea6e0e572965103e72bd836f55"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -390,8 +337,8 @@ dependencies = [
  "http-body",
  "httparse",
  "httpdate",
- "itoa",
- "pin-project 1.0.4",
+ "itoa 0.4.8",
+ "pin-project-lite",
  "socket2",
  "tokio",
  "tower-service",
@@ -401,9 +348,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.6.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fb1fa934250de4de8aef298d81c729a7d33d8c239daa3a7575e6b92bfc7313b"
+checksum = "282a6247722caba404c065016bbfa522806e51714c34f5dfc3e4a3a46fcb4223"
 dependencies = [
  "autocfg",
  "hashbrown",
@@ -411,9 +358,15 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "0.4.7"
+version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
+checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
+
+[[package]]
+name = "itoa"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
 
 [[package]]
 name = "lazy_static"
@@ -423,30 +376,30 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.94"
+version = "0.2.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18794a8ad5b29321f790b55d93dfba91e125cb1a9edbd4f8e3150acc771c1a5e"
+checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
 
 [[package]]
 name = "log"
-version = "0.4.13"
+version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcf3805d4480bb5b86070dcfeb9e2cb2ebc148adb753c5cca5f884d1d65a42b2"
+checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if",
 ]
 
 [[package]]
 name = "matches"
-version = "0.1.8"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08"
+checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
 
 [[package]]
 name = "memchr"
-version = "2.3.4"
+version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525"
+checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
 
 [[package]]
 name = "mime"
@@ -466,9 +419,9 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.7.7"
+version = "0.7.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e50ae3f04d169fcc9bde0b547d1c205219b7157e07ded9c5aff03e0637cb3ed7"
+checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
 dependencies = [
  "libc",
  "log",
@@ -479,11 +432,10 @@ dependencies = [
 
 [[package]]
 name = "miow"
-version = "0.3.6"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a33c1b55807fbed163481b5ba66db4b2fa6cde694a5027be10fb724206c5897"
+checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
 dependencies = [
- "socket2",
  "winapi",
 ]
 
@@ -517,9 +469,9 @@ dependencies = [
 
 [[package]]
 name = "num_cpus"
-version = "1.13.0"
+version = "1.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
+checksum = "19e64526ebdee182341572e50e9ad03965aa510cd94427a4549448f285e957a1"
 dependencies = [
  "hermit-abi",
  "libc",
@@ -527,15 +479,24 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.5.2"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
+checksum = "da32515d9f6e6e489d7bc9d84c71b060db7247dc035bbe44eac88cf87486d8d5"
 
 [[package]]
 name = "opaque-debug"
-version = "0.2.3"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
+checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
+
+[[package]]
+name = "os_str_bytes"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e22443d1643a904602595ba1cd8f7d896afe56d26712531c5ff73a15b2fbf64"
+dependencies = [
+ "memchr",
+]
 
 [[package]]
 name = "percent-encoding"
@@ -545,38 +506,18 @@ checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
 name = "pin-project"
-version = "0.4.27"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ffbc8e94b38ea3d2d8ba92aea2983b503cd75d0888d75b86bb37970b5698e15"
+checksum = "58ad3879ad3baf4e44784bc6a718a8698867bb991f8ce24d1bcbe2cfb4c3a75e"
 dependencies = [
- "pin-project-internal 0.4.27",
-]
-
-[[package]]
-name = "pin-project"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b70b68509f17aa2857863b6fa00bf21fc93674c7a8893de2f469f6aa7ca2f2"
-dependencies = [
- "pin-project-internal 1.0.4",
+ "pin-project-internal",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.27"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65ad2ae56b6abe3a1ee25f15ee605bacadb9a764edaba9c2bf4103800d4a1895"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "pin-project-internal"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "caa25a6393f22ce819b0f50e0be89287292fda8d425be38ee0ca14c4931d9e71"
+checksum = "744b6f092ba29c3650faf274db506afd39944f48420f6c86b17cfe0ee1cb36bb"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -585,9 +526,9 @@ dependencies = [
 
 [[package]]
 name = "pin-project-lite"
-version = "0.2.4"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439697af366c49a6d0a010c56a0d97685bc140ce0d377b13a2ea2aa42d64a827"
+checksum = "e280fbe77cc62c91527259e9442153f4688736748d24660126286329742b4c6c"
 
 [[package]]
 name = "pin-utils"
@@ -597,33 +538,33 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.19"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
+checksum = "58893f751c9b0412871a09abd62ecd2a00298c6c83befa223ef98c52aef40cbe"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.24"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e0704ee1a7e00d7bb417d0770ea303c1bccbabf0ef1667dae92b5967f5f8a71"
+checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
 dependencies = [
  "unicode-xid",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.8"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "991431c3519a3f36861882da93630ce66b52918dcf1b8e2fd66b397fc96f28df"
+checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "ryu"
-version = "1.0.5"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
+checksum = "73b4b750c782965c211b42f022f59af1fbceabdd026623714f104152f1ec149f"
 
 [[package]]
 name = "scoped-tls"
@@ -633,18 +574,18 @@ checksum = "ea6a9290e3c9cf0f18145ef7ffa62d68ee0bf5fcd651017e586dc7fd5da448c2"
 
 [[package]]
 name = "serde"
-version = "1.0.120"
+version = "1.0.133"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "166b2349061381baf54a58e4b13c89369feb0ef2eaa57198899e2312aac30aab"
+checksum = "97565067517b60e2d1ea8b268e59ce036de907ac523ad83a0475da04e818989a"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.120"
+version = "1.0.133"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ca2a8cb5805ce9e3b95435e3765b7b553cecc762d938d409434338386cb5775"
+checksum = "ed201699328568d8d08208fdd080e3ff594e6c422e438b6705905da01005d537"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -653,11 +594,11 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.61"
+version = "1.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fceb2595057b6891a4ee808f70054bd2d12f0e97f1cbb78689b59f676df325a"
+checksum = "ee2bb9cd061c5865d345bb02ca49fcef1391741b672b54a0bf7b679badec3142"
 dependencies = [
- "itoa",
+ "itoa 1.0.1",
  "ryu",
  "serde",
 ]
@@ -669,60 +610,60 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "edfa57a7f8d9c1d260a549e7224100f6c43d43f9103e06dd8b4095a9b2b43ce9"
 dependencies = [
  "form_urlencoded",
- "itoa",
+ "itoa 0.4.8",
  "ryu",
  "serde",
 ]
 
 [[package]]
 name = "sha-1"
-version = "0.8.2"
+version = "0.9.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7d94d0bede923b3cea61f3f1ff57ff8cdfd77b400fb8f9998949e0cf04163df"
+checksum = "99cd6713db3cf16b6c84e06321e049a9b9f699826e16096d23bbcc44d15d51a6"
 dependencies = [
  "block-buffer",
+ "cfg-if",
+ "cpufeatures",
  "digest",
- "fake-simd",
  "opaque-debug",
 ]
 
 [[package]]
 name = "signal-hook-registry"
-version = "1.3.0"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16f1d0fef1604ba8f7a073c7e701f213e056707210e9020af4528e0101ce11a6"
+checksum = "e51e73328dc4ac0c7ccbda3a494dfa03df1de2f46018127f60c693f2648455b0"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "slab"
-version = "0.4.2"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
+checksum = "9def91fd1e018fe007022791f865d0ccc9b3a0d5001e01aabb8b40e46000afb5"
 
 [[package]]
 name = "socket2"
-version = "0.3.19"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "122e570113d28d773067fab24266b66753f6ea915758651696b6e35e49f88d6e"
+checksum = "5dc90fe6c7be1a323296982db1836d1ea9e47b6839496dde9a541bc496df3516"
 dependencies = [
- "cfg-if 1.0.0",
  "libc",
  "winapi",
 ]
 
 [[package]]
 name = "strsim"
-version = "0.8.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
+checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "syn"
-version = "1.0.58"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc60a3d73ea6594cd712d830cc1f0390fd71542d8c8cd24e70cc54cdfd5e05d5"
+checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -730,14 +671,20 @@ dependencies = [
 ]
 
 [[package]]
-name = "textwrap"
-version = "0.11.0"
+name = "termcolor"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
+checksum = "2dfed899f0eb03f32ee8c6a0aabdb8a7949659e3466561fc0adf54e26d88c5f4"
 dependencies = [
- "unicode-width",
+ "winapi-util",
 ]
 
+[[package]]
+name = "textwrap"
+version = "0.14.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0066c8d12af8b5acd21e00547c3797fde4e8677254a7ee429176ccebbe93dd80"
+
 [[package]]
 name = "time"
 version = "0.1.44"
@@ -751,11 +698,10 @@ dependencies = [
 
 [[package]]
 name = "tokio"
-version = "1.12.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2c2416fdedca8443ae44b4527de1ea633af61d8f7169ffa6e72c5b53d24efcc"
+checksum = "fbbf1c778ec206785635ce8ad57fe52b3009ae9e0c9f574a728f3049d3e55838"
 dependencies = [
- "autocfg",
  "bytes",
  "libc",
  "memchr",
@@ -770,9 +716,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-macros"
-version = "1.1.0"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "caf7b11a536f46a809a8a9f0bb4237020f70ecbf115b842360afb127ea2fda57"
+checksum = "b557f72f448c511a979e2564e55d74e6c4432fc96ff4f6241bc6bded342643b7"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -781,9 +727,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-stream"
-version = "0.1.2"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76066865172052eb8796c686f0b441a93df8b08d40a950b062ffb9a426f00edd"
+checksum = "50145484efff8818b5ccd256697f36863f587da82cf8b409c53adf1e840798e3"
 dependencies = [
  "futures-core",
  "pin-project-lite",
@@ -792,9 +738,9 @@ dependencies = [
 
 [[package]]
 name = "tokio-util"
-version = "0.6.1"
+version = "0.6.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12ae4751faa60b9f96dd8344d74592e5a17c0c9a220413dbc6942d14139bbfcc"
+checksum = "9e99e1983e5d376cd8eb4b66604d2e99e79f5bd988c3055891dcd8c9e2604cc0"
 dependencies = [
  "bytes",
  "futures-core",
@@ -802,7 +748,6 @@ dependencies = [
  "log",
  "pin-project-lite",
  "tokio",
- "tokio-stream",
 ]
 
 [[package]]
@@ -816,17 +761,17 @@ dependencies = [
 
 [[package]]
 name = "tower-service"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e987b6bf443f4b5b3b6f38704195592cca41c5bb7aedd3c3693c7081f8289860"
+checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
 
 [[package]]
 name = "tracing"
-version = "0.1.22"
+version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f47026cdc4080c07e49b37087de021820269d996f581aac150ef9e5583eefe3"
+checksum = "375a639232caf30edfc78e8d89b2d4c375515393e7af7e16f01cd96917fb2105"
 dependencies = [
- "cfg-if 1.0.0",
+ "cfg-if",
  "log",
  "pin-project-lite",
  "tracing-core",
@@ -834,23 +779,13 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.17"
+version = "0.1.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f50de3927f93d202783f4513cda820ab47ef17f624b03c096e86ef00c67e6b5f"
+checksum = "1f4ed65637b8390770814083d20756f87bfa2c21bf2f110babdc5438351746e4"
 dependencies = [
  "lazy_static",
 ]
 
-[[package]]
-name = "tracing-futures"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab7bb6f14721aa00656086e9335d363c5c8747bae02ebe32ea2c7dece5689b4c"
-dependencies = [
- "pin-project 0.4.27",
- "tracing",
-]
-
 [[package]]
 name = "try-lock"
 version = "0.2.3"
@@ -859,9 +794,9 @@ checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
 
 [[package]]
 name = "typenum"
-version = "1.12.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "373c8a200f9e67a0c95e62a4f52fbf80c23b4381c05a17845531982fa99e6b33"
+checksum = "dcf81ac59edc17cc8697ff311e8f5ef2d99fcbd9817b34cec66f90b6c3dfd987"
 
 [[package]]
 name = "udpt-rs"
@@ -890,29 +825,17 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "unicode-width"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
-
 [[package]]
 name = "unicode-xid"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
-
-[[package]]
-name = "vec_map"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
 name = "version_check"
-version = "0.9.2"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5a972e5669d67ba988ce3dc826706fb0a8b01471c088cb0b6110b805cc36aed"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "want"
@@ -926,12 +849,13 @@ dependencies = [
 
 [[package]]
 name = "warp"
-version = "0.3.1"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "332d47745e9a0c38636dbd454729b147d16bd1ed08ae67b3ab281c4506771054"
+checksum = "3cef4e1e9114a4b7f1ac799f16ce71c14de5778500c5450ec6b7b920c55b587e"
 dependencies = [
  "bytes",
- "futures",
+ "futures-channel",
+ "futures-util",
  "headers",
  "http",
  "hyper",
@@ -939,7 +863,7 @@ dependencies = [
  "mime",
  "mime_guess",
  "percent-encoding",
- "pin-project 1.0.4",
+ "pin-project",
  "scoped-tls",
  "serde",
  "serde_json",
@@ -973,6 +897,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
diff --git a/Cargo.toml b/Cargo.toml
index 4d0d767..4c617ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,12 +12,12 @@ lto = "fat"
 serde = {version = "1.0", features = ["derive"]}
 bincode = "1.3"
 warp = {version = "0.3", default-features = false}
-tokio = {version = "1.12", features = ["macros", "io-util", "net", "time", "rt-multi-thread", "fs", "sync", "signal"]}
+tokio = {version = "1.15", features = ["macros", "io-util", "net", "time", "rt-multi-thread", "fs", "sync", "signal"]}
 binascii = "0.1"
 toml = "0.5"
-clap = "2.33"
+clap = "3.0"
 log = {version = "0.4", features = ["release_max_level_info"]}
 fern = "0.6"
 serde_json = "1.0"
-async-compression = {version = "^0.3.7", features = ["bzip2", "tokio"]}
+async-compression = {version = "^0.3.8", features = ["bzip2", "tokio"]}
 chrono = "0.4"
diff --git a/src/config.rs b/src/config.rs
index 2f1f3e7..462ab80 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,8 +1,6 @@
 pub use crate::tracker::TrackerMode;
 use serde::Deserialize;
-use std;
 use std::collections::HashMap;
-use toml;
 
 #[derive(Deserialize)]
 pub struct UDPConfig {
@@ -108,7 +106,7 @@ impl Default for Configuration {
     fn default() -> Configuration {
         Configuration {
             log_level: None,
-            mode: TrackerMode::DynamicMode,
+            mode: TrackerMode::Dynamic,
             udp: UDPConfig {
                 announce_interval: 120,
                 bind_address: String::from("0.0.0.0:6969"),
diff --git a/src/main.rs b/src/main.rs
index e856302..22daa48 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,3 @@
-use clap;
-use fern;
 use log::{error, info, trace, warn};
 
 mod config;
@@ -57,9 +55,9 @@ async fn main() {
         .author(env!("CARGO_PKG_AUTHORS"))
         .version(env!("CARGO_PKG_VERSION"))
         .arg(
-            clap::Arg::with_name("config")
+            clap::Arg::new("config")
                 .takes_value(true)
-                .short("-c")
+                .short('c')
                 .help("Configuration file to load.")
                 .required(true),
         );
diff --git a/src/server.rs b/src/server.rs
index 3444c6d..82a23f7 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -1,11 +1,9 @@
 use log::{debug, error, trace};
-use std;
 use std::io::Write;
 use std::net::SocketAddr;
 use std::sync::Arc;
 use tokio::net::UdpSocket;
 
-use bincode;
 use serde::{Deserialize, Serialize};
 
 use crate::config::Configuration;
@@ -143,7 +141,6 @@ impl UDPTracker {
             _ => {
                 trace!("invalid action from {}", remote_address);
                 // someone is playing around... ignore request.
-                return;
             }
         }
     }
@@ -168,7 +165,7 @@ impl UDPTracker {
         let mut payload_buffer = vec![0u8; MAX_PACKET_SIZE];
         let mut payload = StackVec::from(payload_buffer.as_mut_slice());
 
-        if let Ok(_) = pack_into(&mut payload, &response) {
+        if pack_into(&mut payload, &response).is_ok() {
             let _ = self.send_packet(remote_addr, payload.as_slice()).await;
         }
     }
@@ -269,11 +266,9 @@ impl UDPTracker {
             }
             tracker::TorrentStats::TorrentFlagged => {
                 self.send_error(&client_addr, &packet.header, "torrent flagged.").await;
-                return;
             }
             tracker::TorrentStats::TorrentNotRegistered => {
                 self.send_error(&client_addr, &packet.header, "torrent not registered.").await;
-                return;
             }
         }
     }
@@ -346,7 +341,7 @@ impl UDPTracker {
         }
 
         // if sending fails, not much we can do...
-        let _ = self.send_packet(&remote_addr, &response.as_slice()).await;
+        let _ = self.send_packet(remote_addr, response.as_slice()).await;
     }
 
     fn get_connection_id(&self, remote_address: &SocketAddr) -> u64 {
@@ -370,10 +365,10 @@ impl UDPTracker {
         let mut payload_buffer = vec![0u8; MAX_PACKET_SIZE];
         let mut payload = StackVec::from(&mut payload_buffer);
 
-        if let Ok(_) = pack_into(&mut payload, &UDPResponseHeader {
+        if pack_into(&mut payload, &UDPResponseHeader {
             transaction_id: header.transaction_id,
             action: Actions::Error,
-        }) {
+        }).is_ok() {
             let msg_bytes = Vec::from(error_msg.as_bytes());
             payload.extend(msg_bytes);
 
@@ -424,7 +419,7 @@ mod tests {
                 println!("conn_id={}", x.action as u32);
             }
             None => {
-                assert!(false);
+                unreachable!();
             }
         }
     }
diff --git a/src/tracker.rs b/src/tracker.rs
index 0ccfac5..4d83564 100644
--- a/src/tracker.rs
+++ b/src/tracker.rs
@@ -12,15 +12,15 @@ const TWO_HOURS: std::time::Duration = std::time::Duration::from_secs(3600 * 2);
 pub enum TrackerMode {
     /// In static mode torrents are tracked only if they were added ahead of time.
     #[serde(rename = "static")]
-    StaticMode,
+    Static,
 
     /// In dynamic mode, torrents are tracked being added ahead of time.
     #[serde(rename = "dynamic")]
-    DynamicMode,
+    Dynamic,
 
     /// Tracker will only serve authenticated peers.
     #[serde(rename = "private")]
-    PrivateMode,
+    Private,
 }
 
 #[derive(Clone, Serialize)]
@@ -38,7 +38,7 @@ fn ser_instant<S: serde::Serializer>(inst: &std::time::Instant, ser: S) -> Resul
     ser.serialize_u64(inst.elapsed().as_millis() as u64)
 }
 
-#[derive(Ord, PartialEq, Eq, Clone)]
+#[derive(Ord, PartialOrd, PartialEq, Eq, Clone)]
 pub struct InfoHash {
     info_hash: [u8; 20],
 }
@@ -64,24 +64,20 @@ impl std::str::FromStr for InfoHash {
     }
 }
 
-impl std::cmp::PartialOrd<InfoHash> for InfoHash {
-    fn partial_cmp(&self, other: &InfoHash) -> Option<std::cmp::Ordering> {
-        self.info_hash.partial_cmp(&other.info_hash)
-    }
-}
-
 impl std::convert::From<&[u8]> for InfoHash {
     fn from(data: &[u8]) -> InfoHash {
         assert_eq!(data.len(), 20);
         let mut ret = InfoHash { info_hash: [0u8; 20] };
         ret.info_hash.clone_from_slice(data);
-        return ret;
+        ret
     }
 }
 
-impl std::convert::Into<InfoHash> for [u8; 20] {
-    fn into(self) -> InfoHash {
-        InfoHash { info_hash: self }
+impl From<[u8; 20]> for InfoHash {
+    fn from(info_hash: [u8; 20]) -> Self {
+        InfoHash {
+            info_hash,
+        }
     }
 }
 
@@ -114,13 +110,13 @@ impl<'v> serde::de::Visitor<'v> for InfoHashVisitor {
 
         let mut res = InfoHash { info_hash: [0u8; 20] };
 
-        if let Err(_) = binascii::hex2bin(v.as_bytes(), &mut res.info_hash) {
+        if binascii::hex2bin(v.as_bytes(), &mut res.info_hash).is_err() {
             return Err(serde::de::Error::invalid_value(
                 serde::de::Unexpected::Str(v),
                 &"expected a hexadecimal string",
             ));
         } else {
-            return Ok(res);
+            Ok(res)
         }
     }
 }
@@ -414,11 +410,9 @@ impl TorrentTracker {
         match write_lock.entry(info_hash.clone()) {
             std::collections::btree_map::Entry::Vacant(ve) => {
                 ve.insert(TorrentEntry::new());
-                return Ok(());
-            }
-            std::collections::btree_map::Entry::Occupied(_entry) => {
-                return Err(());
-            }
+                Ok(())
+            },
+            std::collections::btree_map::Entry::Occupied(_entry) => Err(()),
         }
     }
 
@@ -430,16 +424,15 @@ impl TorrentTracker {
         match torrent_entry {
             Entry::Vacant(_) => {
                 // no entry, nothing to do...
-                return Err(());
             }
             Entry::Occupied(entry) => {
                 if force || !entry.get().is_flagged() {
                     entry.remove();
                     return Ok(());
                 }
-                return Err(());
             }
         }
+        Err(())
     }
 
     /// flagged torrents will result in a tracking error. This is to allow enforcement against piracy.
@@ -460,14 +453,9 @@ impl TorrentTracker {
         &self, info_hash: &InfoHash, remote_addr: &std::net::SocketAddr,
     ) -> Option<Vec<std::net::SocketAddr>> {
         let read_lock = self.database.torrent_peers.read().await;
-        match read_lock.get(info_hash) {
-            None => {
-                return None;
-            }
-            Some(entry) => {
-                return Some(entry.get_peers(remote_addr));
-            }
-        };
+        read_lock
+            .get(info_hash)
+            .map(|entry| entry.get_peers(remote_addr))
     }
 
     pub async fn update_torrent_and_get_stats(
@@ -479,7 +467,7 @@ impl TorrentTracker {
         let torrent_entry = match torrent_peers.entry(info_hash.clone()) {
             Entry::Vacant(vacant) => {
                 match self.mode {
-                    TrackerMode::DynamicMode => vacant.insert(TorrentEntry::new()),
+                    TrackerMode::Dynamic => vacant.insert(TorrentEntry::new()),
                     _ => {
                         return TorrentStats::TorrentNotRegistered;
                     }
@@ -497,14 +485,14 @@ impl TorrentTracker {
 
         let (seeders, complete, leechers) = torrent_entry.get_stats();
 
-        return TorrentStats::Stats {
+        TorrentStats::Stats {
             seeders,
             leechers,
             complete,
-        };
+        }
     }
 
-    pub(crate) async fn get_database<'a>(&'a self) -> tokio::sync::RwLockReadGuard<'a, BTreeMap<InfoHash, TorrentEntry>> {
+    pub(crate) async fn get_database(&self) -> tokio::sync::RwLockReadGuard<'_, BTreeMap<InfoHash, TorrentEntry>> {
         self.database.torrent_peers.read().await
     }
 
@@ -558,9 +546,9 @@ impl TorrentTracker {
                 }
             }
 
-            if self.mode == TrackerMode::DynamicMode {
+            if self.mode == TrackerMode::Dynamic {
                 // peer-less torrents..
-                if v.peers.len() == 0 && !v.is_flagged() {
+                if v.peers.is_empty() && !v.is_flagged() {
                     torrents_to_remove.push(k.clone());
                 }
             }
@@ -627,7 +615,7 @@ mod tests {
 
     #[tokio::test]
     async fn test_save_db() {
-        let tracker = TorrentTracker::new(TrackerMode::DynamicMode);
+        let tracker = TorrentTracker::new(TrackerMode::Dynamic);
         tracker
             .add_torrent(&[0u8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0].into())
             .await
diff --git a/src/webserver.rs b/src/webserver.rs
index 52f544a..332c9ec 100644
--- a/src/webserver.rs
+++ b/src/webserver.rs
@@ -101,7 +101,7 @@ fn authenticate(tokens: HashMap<String, String>) -> impl Filter<Extract = (), Er
 pub fn build_server(
     tracker: Arc<TorrentTracker>, tokens: HashMap<String, String>,
 ) -> Server<impl Filter<Extract = impl Reply> + Clone + Send + Sync + 'static> {
-    let root = filters::path::end().map(|| view_root());
+    let root = filters::path::end().map(view_root);
 
     let t1 = tracker.clone();
     // view_torrent_list -> GET /t/?offset=:u32&limit=:u32 HTTP/1.1
@@ -159,7 +159,7 @@ pub fn build_server(
                 let peers: Vec<_> = info
                     .get_peers_iter()
                     .take(1000)
-                    .map(|(peer_id, peer_info)| (peer_id.clone(), peer_info.clone()))
+                    .map(|(&peer_id, peer_info)| (peer_id, peer_info.clone()))
                     .collect();
 
                 Ok(reply::json(&TorrentEntry {
@@ -196,7 +196,7 @@ pub fn build_server(
             }
         });
 
-    let t4 = tracker.clone();
+    let t4 = tracker;
     // add_torrent/alter: POST /t/:info_hash
     // (optional) BODY: json: {"is_flagged": boolean}
     let change_torrent = filters::method::post()