diff --git a/Cargo.lock b/Cargo.lock
index 1b42a19..8191f08 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -24,6 +24,12 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "anyhow"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28b2cd92db5cbd74e8e5028f7e27dd7aa3090e89e4f2a197cc7c8dfb69c7063b"
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -41,6 +47,12 @@ version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2"
 
+[[package]]
+name = "autocfg"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
 [[package]]
 name = "backtrace"
 version = "0.3.42"
@@ -48,7 +60,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4b1549d804b6c73f4817df2ba073709e96e426f12987127c48e6745568c350b"
 dependencies = [
  "backtrace-sys",
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "rustc-demangle",
 ]
@@ -104,25 +116,24 @@ dependencies = [
 
 [[package]]
 name = "cargo"
-version = "0.42.0"
+version = "0.53.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09b85486d3256379b5f4703d7b7325f33d4331dc903a6f7bfdf8d3e5708871ce"
+checksum = "ca7e53bf83eb8f6254a37ac45822003c05f6053c09b58795de76a3d6c84eda8a"
 dependencies = [
+ "anyhow",
  "atty",
  "bytesize",
  "cargo-platform",
  "clap",
  "core-foundation",
  "crates-io",
- "crossbeam-utils",
+ "crossbeam-utils 0.8.4",
  "crypto-hash",
  "curl",
  "curl-sys",
  "env_logger",
- "failure",
  "filetime",
  "flate2",
- "fs2",
  "fwdansi",
  "git2",
  "git2-curl",
@@ -143,7 +154,7 @@ dependencies = [
  "num_cpus",
  "opener",
  "percent-encoding",
- "remove_dir_all",
+ "rand 0.8.3",
  "rustc-workspace-hack",
  "rustfix",
  "same-file",
@@ -158,6 +169,7 @@ dependencies = [
  "termcolor",
  "toml",
  "unicode-width",
+ "unicode-xid",
  "url",
  "walkdir",
  "winapi",
@@ -165,9 +177,9 @@ dependencies = [
 
 [[package]]
 name = "cargo-platform"
-version = "0.1.0"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e78cce7683c0998d7a11405dcd13e31b23a930d4b5bba9e4245bdfba6bcd462c"
+checksum = "0226944a63d1bf35a3b5f948dd7c59e263db83695c9e8bffc4037de02e30f1d7"
 dependencies = [
  "serde",
 ]
@@ -199,6 +211,12 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "clap"
 version = "2.33.3"
@@ -234,9 +252,9 @@ dependencies = [
 
 [[package]]
 name = "core-foundation"
-version = "0.7.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57d24c7a13c43e870e37c1556b74555437870a04514f7685f5b354e090567171"
+checksum = "0a89e2ae426ea83155dccf10c0fa6b1463ef6d5fcb44cee0b224a408fa640a62"
 dependencies = [
  "core-foundation-sys",
  "libc",
@@ -244,21 +262,20 @@ dependencies = [
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.7.0"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3a71ab494c0b5b860bdc8407ae08978052417070c2ced38573a9157ad75b8ac"
+checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
 
 [[package]]
 name = "crates-io"
-version = "0.30.0"
+version = "0.33.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a3ae9a29c0910277b4739f41214c7eea2348b33569224b3f553de08713c8cf77"
+checksum = "217138863f33507d7a8edef10fc673c4911679ef7aeb9ff53ee7bb82dc7bf590"
 dependencies = [
+ "anyhow",
  "curl",
- "failure",
  "percent-encoding",
  "serde",
- "serde_derive",
  "serde_json",
  "url",
 ]
@@ -269,7 +286,7 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba125de2af0df55319f41944744ad91c71113bf74a4646efff39afe1f6842db1"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
 ]
 
 [[package]]
@@ -278,7 +295,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acec9a3b0b3559f15aee4f90746c4e5e293b701c0f7d3925d24e01645267b68c"
 dependencies = [
- "crossbeam-utils",
+ "crossbeam-utils 0.7.0",
 ]
 
 [[package]]
@@ -287,8 +304,19 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ce446db02cdc3165b94ae73111e570793400d0794e46125cc4056c81cbb039f4"
 dependencies = [
- "autocfg",
- "cfg-if",
+ "autocfg 0.1.7",
+ "cfg-if 0.1.10",
+ "lazy_static",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4feb231f0d4d6af81aed15928e58ecf5816aa62a2393e2c82f46973e92a9a278"
+dependencies = [
+ "autocfg 1.0.1",
+ "cfg-if 1.0.0",
  "lazy_static",
 ]
 
@@ -306,9 +334,9 @@ dependencies = [
 
 [[package]]
 name = "curl"
-version = "0.4.25"
+version = "0.4.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06aa71e9208a54def20792d877bc663d6aae0732b9852e612c4a933177c31283"
+checksum = "d0bac9f84ca0977c4d9b8db998689de55b9e976656a6bc87fada2ca710d504c7"
 dependencies = [
  "curl-sys",
  "libc",
@@ -321,9 +349,9 @@ dependencies = [
 
 [[package]]
 name = "curl-sys"
-version = "0.4.25"
+version = "0.4.42+curl-7.76.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c38ca47d60b86d0cc9d42caa90a0885669c2abc9791f871c81f58cdf39e979b"
+checksum = "4636d8d6109c842707018a104051436bffb8991ea20b2d1293db70b6e0ee4c7c"
 dependencies = [
  "cc",
  "libc",
@@ -337,9 +365,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.7.1"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
+checksum = "17392a012ea30ef05a610aa97dfb49496e71c9f676b27879922ea5bdf60d9d3f"
 dependencies = [
  "atty",
  "humantime",
@@ -372,13 +400,13 @@ dependencies = [
 
 [[package]]
 name = "filetime"
-version = "0.2.8"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ff6d4dab0aa0c8e6346d46052e93b13a16cf847b54ed357087c35011048cc7d"
+checksum = "1d34cfa13a63ae058bfa601fe9e313bbdb3746427c1459185464ce0fcf62e1e8"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.2.8",
  "winapi",
 ]
 
@@ -388,7 +416,7 @@ version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6bd6d6f4752952feb71363cffc9ebac9411b75b87c6ab6058c40c8900cf43c0f"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "crc32fast",
  "libc",
  "libz-sys",
@@ -416,16 +444,6 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
 
-[[package]]
-name = "fs2"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9564fc758e15025b46aa6643b1b77d047d1a56a1aea6e01002ac0c7026876213"
-dependencies = [
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "fwdansi"
 version = "1.1.0"
@@ -442,16 +460,27 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
- "wasi",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.10.2+wasi-snapshot-preview1",
 ]
 
 [[package]]
 name = "git2"
-version = "0.10.2"
+version = "0.13.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c1af51ea8a906616af45a4ce78eacf25860f7a13ae7bf8a814693f0f4037a26"
+checksum = "b483c6c2145421099df1b4efd50e0f6205479a072199460eff852fa15e5603c7"
 dependencies = [
  "bitflags",
  "libc",
@@ -464,9 +493,9 @@ dependencies = [
 
 [[package]]
 name = "git2-curl"
-version = "0.11.0"
+version = "0.14.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd6527e480187ce19aaf4fa6acfb7657b25628ce31cb8ffabdfca3bf731524c5"
+checksum = "883539cb0ea94bab3f8371a98cd8e937bbe9ee7c044499184aa4c17deb643a50"
 dependencies = [
  "curl",
  "git2",
@@ -525,12 +554,9 @@ dependencies = [
 
 [[package]]
 name = "humantime"
-version = "1.3.0"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df004cfca50ef23c36850aaaa59ad52cc70d0e90243c3c7737a4dd32dc7a3c4f"
-dependencies = [
- "quick-error",
-]
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "idna"
@@ -563,12 +589,12 @@ dependencies = [
 
 [[package]]
 name = "im-rc"
-version = "14.2.0"
+version = "15.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5df50c85553397f6320fad21751d7ba9007de512c7971cb8746238f1a155d3c9"
+checksum = "3ca8957e71f04a205cb162508f9326aea04676c8dfd0711220190d6b83664f3f"
 dependencies = [
  "bitmaps",
- "rand_core",
+ "rand_core 0.5.1",
  "rand_xoshiro",
  "sized-chunks",
  "typenum",
@@ -583,9 +609,9 @@ checksum = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 
 [[package]]
 name = "jobserver"
-version = "0.1.19"
+version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67b06c1b455f1cf4269a8cfc320ab930a810e2375a42af5075eb8a8b36405ce0"
+checksum = "972f5ae5d1cb9c6ae417789196c803205313edde988685da5e3aae0827b9e7fd"
 dependencies = [
  "libc",
 ]
@@ -604,15 +630,15 @@ checksum = "b294d6fa9ee409a054354afc4352b0b9ef7ca222c69b8812cbea9e7d2bf3783f"
 
 [[package]]
 name = "libc"
-version = "0.2.66"
+version = "0.2.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
+checksum = "18794a8ad5b29321f790b55d93dfba91e125cb1a9edbd4f8e3150acc771c1a5e"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.9.2"
+version = "0.12.19+1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4870c781f6063efb83150cd22c1ddf6ecf58531419e7570cdcced46970f64a16"
+checksum = "f322155d574c8b9ebe991a04f6908bb49e68a79463338d24a43d6274cb6443e6"
 dependencies = [
  "cc",
  "libc",
@@ -624,9 +650,9 @@ dependencies = [
 
 [[package]]
 name = "libnghttp2-sys"
-version = "0.1.2"
+version = "0.1.6+1.43.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "02254d44f4435dd79e695f2c2b83cd06a47919adea30216ceaf0c57ca0a72463"
+checksum = "0af55541a8827e138d59ec9e5877fb6095ece63fb6f4da45e7491b4fbd262855"
 dependencies = [
  "cc",
  "libc",
@@ -634,9 +660,9 @@ dependencies = [
 
 [[package]]
 name = "libssh2-sys"
-version = "0.2.14"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36aa6e813339d3a063292b77091dfbbb6152ff9006a459895fa5bebed7d34f10"
+checksum = "e0186af0d8f171ae6b9c4c90ec51898bad5d08a2d5e470903a50d9ad8959cbee"
 dependencies = [
  "cc",
  "libc",
@@ -648,9 +674,9 @@ dependencies = [
 
 [[package]]
 name = "libz-sys"
-version = "1.0.25"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2eb5e43362e38e2bca2fd5f5134c4d4564a23a5c28e9b95411652021a8675ebe"
+checksum = "de5435b8549c16d423ed0c03dbaafe57cf6c3344744f1242520d59c9d8ecec66"
 dependencies = [
  "cc",
  "libc",
@@ -664,7 +690,7 @@ version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
 ]
 
 [[package]]
@@ -690,11 +716,10 @@ dependencies = [
 
 [[package]]
 name = "miow"
-version = "0.3.3"
+version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "396aa0f2003d7df8395cb93e09871561ccc3e785f0acb369170e8cc74ddf9226"
+checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
 dependencies = [
- "socket2",
  "winapi",
 ]
 
@@ -724,7 +749,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a3cc5799d98e1088141b8e01ff760112bbd9f19d850c124500566ca6901a585"
 dependencies = [
  "bitflags",
- "cfg-if",
+ "cfg-if 0.1.10",
  "foreign-types",
  "lazy_static",
  "libc",
@@ -743,7 +768,7 @@ version = "0.9.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "465d16ae7fc0e313318f7de5cecf57b2fbe7511fd213978b457e1c96ff46736f"
 dependencies = [
- "autocfg",
+ "autocfg 0.1.7",
  "cc",
  "libc",
  "pkg-config",
@@ -764,9 +789,9 @@ checksum = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
 
 [[package]]
 name = "ppv-lite86"
-version = "0.2.6"
+version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74490b50b9fbe561ac330df47c08f3f33073d2d00c150f719147d7c54522fa1b"
+checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
 [[package]]
 name = "proc-macro2"
@@ -777,12 +802,6 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "quick-error"
-version = "1.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
-
 [[package]]
 name = "quote"
 version = "1.0.2"
@@ -798,11 +817,23 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
+ "libc",
+ "rand_chacha 0.2.1",
+ "rand_core 0.5.1",
+ "rand_hc 0.2.0",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ef9e7e66b4468674bfcb0c81af8b7fa0bb154fa9f28eb840da5c447baeb8d7e"
+dependencies = [
  "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
+ "rand_chacha 0.3.0",
+ "rand_core 0.6.2",
+ "rand_hc 0.3.0",
 ]
 
 [[package]]
@@ -812,7 +843,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "03a2a90da8c7523f554344f921aa97283eadf6ac484a6d2a7d0212fa7f8d6853"
 dependencies = [
  "c2-chacha",
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.2",
 ]
 
 [[package]]
@@ -821,7 +862,16 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
+dependencies = [
+ "getrandom 0.2.2",
 ]
 
 [[package]]
@@ -830,7 +880,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
+dependencies = [
+ "rand_core 0.6.2",
 ]
 
 [[package]]
@@ -839,7 +898,7 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a9fcdd2e881d02f1d9390ae47ad8e5696a9e4be7b547a1da2afbc61973217004"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
 ]
 
 [[package]]
@@ -848,6 +907,15 @@ version = "0.1.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "742739e41cd49414de871ea5e549afb7e2a3ac77b589bcbebe8c82fab37147fc"
+dependencies = [
+ "bitflags",
+]
+
 [[package]]
 name = "regex"
 version = "1.3.3"
@@ -889,11 +957,11 @@ checksum = "fc71d2faa173b74b232dedc235e3ee1696581bb132fc116fa3626d6151a1a8fb"
 
 [[package]]
 name = "rustfix"
-version = "0.4.6"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7150ac777a2931a53489f5a41eb0937b84e3092a20cd0e73ad436b65b507f607"
+checksum = "f2c50b74badcddeb8f7652fa8323ce440b95286f8e4b64ebfd871c609672704e"
 dependencies = [
- "failure",
+ "anyhow",
  "log",
  "serde",
  "serde_json",
@@ -926,9 +994,9 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "0.9.0"
+version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+checksum = "394cec28fa623e00903caf7ba4fa6fb9a0e260280bb8cdbbba029611108a0190"
 dependencies = [
  "semver-parser",
  "serde",
@@ -988,9 +1056,9 @@ checksum = "170a13e64f2a51b77a45702ba77287f5c6829375b04a69cf2222acd17d0cfab9"
 
 [[package]]
 name = "sized-chunks"
-version = "0.5.1"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f59f81ec9833a580d2448e958d16bd872637798f3ab300b693c48f136fb76ff"
+checksum = "1ec31ceca5644fa6d444cc77548b88b67f46db6f7c71683b0f9336e671830d2f"
 dependencies = [
  "bitmaps",
  "typenum",
@@ -1004,13 +1072,11 @@ checksum = "44e59e0c9fa00817912ae6e4e6e3c4fe04455e75699d06eedc7d85917ed8e8f4"
 
 [[package]]
 name = "socket2"
-version = "0.3.11"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8b74de517221a2cb01a53349cf54182acdc31a074727d3079068448c0676d85"
+checksum = "9e3dfc207c526015c632472a77be09cf1b6e46866581aecae5cc38fb4235dea2"
 dependencies = [
- "cfg-if",
  "libc",
- "redox_syscall",
  "winapi",
 ]
 
@@ -1060,7 +1126,7 @@ checksum = "b3196bfbffbba3e57481b6ea32249fbaf590396a52505a2615adbb79d9d826d3"
 dependencies = [
  "filetime",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.56",
 ]
 
 [[package]]
@@ -1069,10 +1135,10 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
- "rand",
- "redox_syscall",
+ "rand 0.7.3",
+ "redox_syscall 0.1.56",
  "remove_dir_all",
  "winapi",
 ]
@@ -1115,9 +1181,9 @@ dependencies = [
 
 [[package]]
 name = "typenum"
-version = "1.11.2"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d2783fe2d6b8c1101136184eb41be8b1ad379e4657050b8aaff0c79ee7575f9"
+checksum = "879f6906492a7cd215bfa4cf595b600146ccfac0c79bcbd1f3000162af5e8b06"
 
 [[package]]
 name = "unicode-bidi"
@@ -1210,11 +1276,17 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
+[[package]]
+name = "wasi"
+version = "0.10.2+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+
 [[package]]
 name = "winapi"
-version = "0.3.8"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
 dependencies = [
  "winapi-i686-pc-windows-gnu",
  "winapi-x86_64-pc-windows-gnu",
diff --git a/Cargo.toml b/Cargo.toml
index e00d383..7d944a6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,5 +34,5 @@ toml = "0.5.7"
 failure = "0.1.8"
 failure_derive = "0.1.8"
 clap = "2.33.3"
-cargo = "0.42.0"
+cargo = "0.53.0"
 termcolor = "1.1.2"