Switch from 'reqwest' to 'ureq'; Remove async

Remove all async from the project by switching from 'reqwest' to 'ureq'.
This should make the code simpler, and hopefully enable us to try out
multithreading.

4 files changed, 92 insertions, 708 deletions

diff --git a/Cargo.lock b/Cargo.lock
index cf3a729..0ee0ec4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -42,12 +42,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c59e7af012c713f529e7a3ee57ce9b31ddd858d4b512923602f74608b009631"
 
 [[package]]
-name = "bytes"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b700ce4376041dcd0a327fd0097c41095743c4c8af8887265942faf1100bd040"
-
-[[package]]
 name = "cc"
 version = "1.0.68"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -76,29 +70,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "core-foundation"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a89e2ae426ea83155dccf10c0fa6b1463ef6d5fcb44cee0b224a408fa640a62"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
-[[package]]
-name = "core-foundation-sys"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea221b5284a47e40033bf9b66f35f984ec0ea2931eb03505246cd27a963f981b"
-
-[[package]]
-name = "encoding_rs"
-version = "0.8.28"
+name = "chunked_transfer"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "80df024fbc5ac80f87dfef0d9f5209a252f2a497f7f42944cff24d8253cac065"
-dependencies = [
- "cfg-if",
-]
+checksum = "fff857943da45f546682664a79488be82e69e43c1a7a2307679ab9afb3a66d2e"
 
 [[package]]
 name = "exitcode"
@@ -131,27 +106,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "fnv"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
-
-[[package]]
-name = "foreign-types"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
-dependencies = [
- "foreign-types-shared",
-]
-
-[[package]]
-name = "foreign-types-shared"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00b0228411908ca8685dba7fc2cdd70ec9990a6e753e89b6ac91a84c40fbaf4b"
-
-[[package]]
 name = "form_urlencoded"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -162,101 +116,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "futures"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e7e43a803dae2fa37c1f6a8fe121e1f7bf9548b4dfc0522a42f34145dadfc27"
-dependencies = [
- "futures-channel",
- "futures-core",
- "futures-executor",
- "futures-io",
- "futures-sink",
- "futures-task",
- "futures-util",
-]
-
-[[package]]
-name = "futures-channel"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e682a68b29a882df0545c143dc3646daefe80ba479bcdede94d5a703de2871e2"
-dependencies = [
- "futures-core",
- "futures-sink",
-]
-
-[[package]]
-name = "futures-core"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0402f765d8a89a26043b889b26ce3c4679d268fa6bb22cd7c6aad98340e179d1"
-
-[[package]]
-name = "futures-executor"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "badaa6a909fac9e7236d0620a2f57f7664640c56575b71a7552fbd68deafab79"
-dependencies = [
- "futures-core",
- "futures-task",
- "futures-util",
- "num_cpus",
-]
-
-[[package]]
-name = "futures-io"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "acc499defb3b348f8d8f3f66415835a9131856ff7714bf10dadfc4ec4bdb29a1"
-
-[[package]]
-name = "futures-macro"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4c40298486cdf52cc00cd6d6987892ba502c7656a16a4192a9992b1ccedd121"
-dependencies = [
- "autocfg",
- "proc-macro-hack",
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "futures-sink"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a57bead0ceff0d6dde8f465ecd96c9338121bb7717d3e7b108059531870c4282"
-
-[[package]]
-name = "futures-task"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a16bef9fc1a4dddb5bee51c989e3fbba26569cbb0e31f5b303c184e3dd33dae"
-
-[[package]]
-name = "futures-util"
-version = "0.3.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "feb5c238d27e2bf94ffdfd27b2c29e3df4a68c4193bb6427384259e2bf191967"
-dependencies = [
- "autocfg",
- "futures-channel",
- "futures-core",
- "futures-io",
- "futures-macro",
- "futures-sink",
- "futures-task",
- "memchr",
- "pin-project-lite",
- "pin-utils",
- "proc-macro-hack",
- "proc-macro-nested",
- "slab",
-]
-
-[[package]]
 name = "getopts"
 version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -292,31 +151,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "h2"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "825343c4eef0b63f541f8903f395dc5beb362a979b5799a84062527ef1e37726"
-dependencies = [
- "bytes",
- "fnv",
- "futures-core",
- "futures-sink",
- "futures-util",
- "http",
- "indexmap",
- "slab",
- "tokio",
- "tokio-util",
- "tracing",
-]
-
-[[package]]
-name = "hashbrown"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
-
-[[package]]
 name = "hashbrown"
 version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -331,87 +165,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7249a3129cbc1ffccd74857f81464a323a152173cdb134e0fd81bc803b29facf"
 dependencies = [
- "hashbrown 0.11.2",
-]
-
-[[package]]
-name = "hermit-abi"
-version = "0.1.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "322f4de77956e22ed0e5032c359a0f1273f1f7f0d79bfa3b8ffbc730d7fbcc5c"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "http"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "527e8c9ac747e28542699a951517aa9a6945af506cd1f2e1b53a576c17b6cc11"
-dependencies = [
- "bytes",
- "fnv",
- "itoa",
-]
-
-[[package]]
-name = "http-body"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60daa14be0e0786db0f03a9e57cb404c9d756eed2b6c62b9ea98ec5743ec75a9"
-dependencies = [
- "bytes",
- "http",
- "pin-project-lite",
-]
-
-[[package]]
-name = "httparse"
-version = "1.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f3a87b616e37e93c22fb19bcd386f02f3af5ea98a25670ad0fce773de23c5e68"
-
-[[package]]
-name = "httpdate"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6456b8a6c8f33fee7d958fcd1b60d55b11940a79e63ae87013e6d22e26034440"
-
-[[package]]
-name = "hyper"
-version = "0.14.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3f71a7eea53a3f8257a7b4795373ff886397178cd634430ea94e12d7fe4fe34"
-dependencies = [
- "bytes",
- "futures-channel",
- "futures-core",
- "futures-util",
- "h2",
- "http",
- "http-body",
- "httparse",
- "httpdate",
- "itoa",
- "pin-project",
- "socket2",
- "tokio",
- "tower-service",
- "tracing",
- "want",
-]
-
-[[package]]
-name = "hyper-tls"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
-dependencies = [
- "bytes",
- "hyper",
- "native-tls",
- "tokio",
- "tokio-native-tls",
+ "hashbrown",
 ]
 
 [[package]]
@@ -426,22 +180,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "indexmap"
-version = "1.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "824845a0bf897a9042383849b02c1bc219c2383772efcd5c6f9766fa4b81aef3"
-dependencies = [
- "autocfg",
- "hashbrown 0.9.1",
-]
-
-[[package]]
-name = "ipnet"
-version = "2.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47be2f14c678be2fdcab04ab1171db51b2762ce6f0a8ee87c8dd4a04ed216135"
-
-[[package]]
 name = "itoa"
 version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -549,61 +287,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
 
 [[package]]
-name = "mime"
-version = "0.3.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2a60c7ce501c71e03a9c9c0d35b861413ae925bd979cc7a4e30d060069aaac8d"
-
-[[package]]
-name = "mio"
-version = "0.7.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf80d3e903b34e0bd7282b218398aec54e082c840d9baf8339e0080a0c542956"
-dependencies = [
- "libc",
- "log",
- "miow",
- "ntapi",
- "winapi",
-]
-
-[[package]]
-name = "miow"
-version = "0.3.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
-dependencies = [
- "winapi",
-]
-
-[[package]]
-name = "native-tls"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8d96b2e1c8da3957d58100b09f102c6d9cfdfced01b7ec5a8974044bb09dbd4"
-dependencies = [
- "lazy_static",
- "libc",
- "log",
- "openssl",
- "openssl-probe",
- "openssl-sys",
- "schannel",
- "security-framework",
- "security-framework-sys",
- "tempfile",
-]
-
-[[package]]
-name = "ntapi"
-version = "0.3.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f6bb902e437b6d86e03cce10a7e2af662292c5dfef23b65899ea3ac9354ad44"
-dependencies = [
- "winapi",
-]
-
-[[package]]
 name = "num-integer"
 version = "0.1.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -623,36 +306,12 @@ dependencies = [
 ]
 
 [[package]]
-name = "num_cpus"
-version = "1.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
-dependencies = [
- "hermit-abi",
- "libc",
-]
-
-[[package]]
 name = "once_cell"
 version = "1.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af8b08b04175473088b46763e51ee54da5f9a164bc162f615b91bc179dbf15a3"
 
 [[package]]
-name = "openssl"
-version = "0.10.34"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d7830286ad6a3973c0f1d9b73738f69c76b739301d0229c4b96501695cbe4c8"
-dependencies = [
- "bitflags",
- "cfg-if",
- "foreign-types",
- "libc",
- "once_cell",
- "openssl-sys",
-]
-
-[[package]]
 name = "openssl-probe"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -684,62 +343,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
 [[package]]
-name = "pin-project"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7509cc106041c40a4518d2af7a61530e1eed0e6285296a3d8c5472806ccc4a4"
-dependencies = [
- "pin-project-internal",
-]
-
-[[package]]
-name = "pin-project-internal"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48c950132583b500556b1efd71d45b319029f2b71518d979fcc208e16b42426f"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "pin-project-lite"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc0e1f259c92177c30a4c9d177246edd0a3568b25756a977d0632cf8fa37e905"
-
-[[package]]
-name = "pin-utils"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
-
-[[package]]
 name = "pkg-config"
 version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 
 [[package]]
-name = "ppv-lite86"
-version = "0.2.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
-
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
-
-[[package]]
-name = "proc-macro-nested"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
-
-[[package]]
 name = "proc-macro2"
 version = "1.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -758,46 +367,6 @@ dependencies = [
 ]
 
 [[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",
-]
-
-[[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",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.6.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "rand_hc"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
-dependencies = [
- "rand_core",
-]
-
-[[package]]
 name = "redox_syscall"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -814,60 +383,28 @@ dependencies = [
  "chrono",
  "exitcode",
  "filetime",
- "futures",
  "getopts",
  "git2",
  "parse-size",
- "reqwest",
  "rusqlite",
  "serde",
  "thiserror",
- "tokio",
- "tokio-stream",
-]
-
-[[package]]
-name = "remove_dir_all"
-version = "0.5.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
-dependencies = [
- "winapi",
+ "ureq",
 ]
 
 [[package]]
-name = "reqwest"
-version = "0.11.3"
+name = "ring"
+version = "0.16.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2296f2fac53979e8ccbc4a1136b25dcefd37be9ed7e4a1f6b05a6029c84ff124"
+checksum = "3053cf52e236a3ed746dfc745aa9cacf1b791d846bdaf412f60a8d7d6e17c8fc"
 dependencies = [
- "base64",
- "bytes",
- "encoding_rs",
- "futures-core",
- "futures-util",
- "http",
- "http-body",
- "hyper",
- "hyper-tls",
- "ipnet",
- "js-sys",
- "lazy_static",
- "log",
- "mime",
- "native-tls",
- "percent-encoding",
- "pin-project-lite",
- "serde",
- "serde_json",
- "serde_urlencoded",
- "tokio",
- "tokio-native-tls",
- "url",
- "wasm-bindgen",
- "wasm-bindgen-futures",
+ "cc",
+ "libc",
+ "once_cell",
+ "spin",
+ "untrusted",
  "web-sys",
- "winreg",
+ "winapi",
 ]
 
 [[package]]
@@ -886,42 +423,32 @@ dependencies = [
 ]
 
 [[package]]
-name = "ryu"
-version = "1.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
-
-[[package]]
-name = "schannel"
-version = "0.1.19"
+name = "rustls"
+version = "0.19.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f05ba609c234e60bee0d547fe94a4c7e9da733d1c962cf6e59efa4cd9c8bc75"
+checksum = "35edb675feee39aec9c99fa5ff985081995a06d594114ae14cbe797ad7b7a6d7"
 dependencies = [
- "lazy_static",
- "winapi",
+ "base64",
+ "log",
+ "ring",
+ "sct",
+ "webpki",
 ]
 
 [[package]]
-name = "security-framework"
-version = "2.2.0"
+name = "ryu"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3670b1d2fdf6084d192bc71ead7aabe6c06aa2ea3fbd9cc3ac111fa5c2b1bd84"
-dependencies = [
- "bitflags",
- "core-foundation",
- "core-foundation-sys",
- "libc",
- "security-framework-sys",
-]
+checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
 
 [[package]]
-name = "security-framework-sys"
-version = "2.2.0"
+name = "sct"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3676258fd3cfe2c9a0ec99ce3038798d847ce3e4bb17746373eb9f0f1ac16339"
+checksum = "b362b83898e0e69f38515b82ee15aa80636befe47c3b6d3d89a911e78fc228ce"
 dependencies = [
- "core-foundation-sys",
- "libc",
+ "ring",
+ "untrusted",
 ]
 
 [[package]]
@@ -956,38 +483,16 @@ dependencies = [
 ]
 
 [[package]]
-name = "serde_urlencoded"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "edfa57a7f8d9c1d260a549e7224100f6c43d43f9103e06dd8b4095a9b2b43ce9"
-dependencies = [
- "form_urlencoded",
- "itoa",
- "ryu",
- "serde",
-]
-
-[[package]]
-name = "slab"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f173ac3d1a7e3b28003f40de0b5ce7fe2710f9b9dc3fc38664cebee46b3b6527"
-
-[[package]]
 name = "smallvec"
 version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
 
 [[package]]
-name = "socket2"
-version = "0.4.0"
+name = "spin"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e3dfc207c526015c632472a77be09cf1b6e46866581aecae5cc38fb4235dea2"
-dependencies = [
- "libc",
- "winapi",
-]
+checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
 [[package]]
 name = "syn"
@@ -1001,20 +506,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "tempfile"
-version = "3.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
-dependencies = [
- "cfg-if",
- "libc",
- "rand",
- "redox_syscall",
- "remove_dir_all",
- "winapi",
-]
-
-[[package]]
 name = "thiserror"
 version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1061,100 +552,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
 
 [[package]]
-name = "tokio"
-version = "1.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a38d31d7831c6ed7aad00aa4c12d9375fd225a6dd77da1d25b707346319a975"
-dependencies = [
- "autocfg",
- "bytes",
- "libc",
- "memchr",
- "mio",
- "num_cpus",
- "pin-project-lite",
- "tokio-macros",
-]
-
-[[package]]
-name = "tokio-macros"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c49e3df43841dafb86046472506755d8501c5615673955f6aa17181125d13c37"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "tokio-native-tls"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7d995660bd2b7f8c1568414c1126076c13fbb725c40112dc0120b78eb9b717b"
-dependencies = [
- "native-tls",
- "tokio",
-]
-
-[[package]]
-name = "tokio-stream"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8864d706fdb3cc0843a49647ac892720dac98a6eeb818b77190592cf4994066"
-dependencies = [
- "futures-core",
- "pin-project-lite",
- "tokio",
-]
-
-[[package]]
-name = "tokio-util"
-version = "0.6.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1caa0b0c8d94a049db56b5acf8cba99dc0623aab1b26d5b5f5e2d945846b3592"
-dependencies = [
- "bytes",
- "futures-core",
- "futures-sink",
- "log",
- "pin-project-lite",
- "tokio",
-]
-
-[[package]]
-name = "tower-service"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "360dfd1d6d30e05fda32ace2c8c70e9c0a9da713275777f5a4dbb8a1893930c6"
-
-[[package]]
-name = "tracing"
-version = "0.1.26"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09adeb8c97449311ccd28a427f96fb563e7fd31aabf994189879d9da2394b89d"
-dependencies = [
- "cfg-if",
- "pin-project-lite",
- "tracing-core",
-]
-
-[[package]]
-name = "tracing-core"
-version = "0.1.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9ff14f98b1a4b289c6248a023c1c2fa1491062964e9fed67ab29c4e4da4a052"
-dependencies = [
- "lazy_static",
-]
-
-[[package]]
-name = "try-lock"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59547bce71d9c38b83d9c0e92b6066c4253371f15005def0c30d9657f50c7642"
-
-[[package]]
 name = "unicode-bidi"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1185,6 +582,30 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 
 [[package]]
+name = "untrusted"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
+
+[[package]]
+name = "ureq"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2475a6781e9bc546e7b64f4013d2f4032c8c6a40fcffd7c6f4ee734a890972ab"
+dependencies = [
+ "base64",
+ "chunked_transfer",
+ "log",
+ "once_cell",
+ "rustls",
+ "serde",
+ "serde_json",
+ "url",
+ "webpki",
+ "webpki-roots",
+]
+
+[[package]]
 name = "url"
 version = "2.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1209,16 +630,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
 
 [[package]]
-name = "want"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
-dependencies = [
- "log",
- "try-lock",
-]
-
-[[package]]
 name = "wasi"
 version = "0.10.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1231,8 +642,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d54ee1d4ed486f78874278e63e4069fc1ab9f6a18ca492076ffb90c5eb2997fd"
 dependencies = [
  "cfg-if",
- "serde",
- "serde_json",
  "wasm-bindgen-macro",
 ]
 
@@ -1252,18 +661,6 @@ dependencies = [
 ]
 
 [[package]]
-name = "wasm-bindgen-futures"
-version = "0.4.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fba7978c679d53ce2d0ac80c8c175840feb849a161664365d1287b41f2e67f1"
-dependencies = [
- "cfg-if",
- "js-sys",
- "wasm-bindgen",
- "web-sys",
-]
-
-[[package]]
 name = "wasm-bindgen-macro"
 version = "0.2.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1303,6 +700,25 @@ dependencies = [
 ]
 
 [[package]]
+name = "webpki"
+version = "0.21.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8e38c0608262c46d4a56202ebabdeb094cef7e560ca7a226c6bf055188aa4ea"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.21.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aabe153544e473b775453675851ecc86863d2a81d786d741f6b76778f2a48940"
+dependencies = [
+ "webpki",
+]
+
+[[package]]
 name = "winapi"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1323,12 +739,3 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
-
-[[package]]
-name = "winreg"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
-dependencies = [
- "winapi",
-]
diff --git a/Cargo.toml b/Cargo.toml
index 2dca2d9..c56b025 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,13 +8,10 @@ anyhow = "1.0.40"
 chrono = "0.4.19"
 exitcode = "1.1.2"
 filetime = "0.2.14"
-futures = { version = "0.3.15", features = ["thread-pool"] }
 getopts = "0.2.21"
 git2 = "0.13.20"
 parse-size = { version = "1.0.0", features = ["std"] }
-reqwest = { version = "0.11.3", features = ["json"] }
 rusqlite = "0.25.3"
 serde = { version = "1.0.126", features = ["derive"] }
 thiserror = "1.0.25"
-tokio = { version = "1.6.1", features = ["macros", "rt-multi-thread"] }
-tokio-stream = "0.1.6"
+ureq = { version = "2.1.1", features = ["json"] }
diff --git a/src/github.rs b/src/github.rs
index 58f8983..5289a0d 100644
--- a/src/github.rs
+++ b/src/github.rs
@@ -16,7 +16,6 @@
 // along with Reflectub. If not, see <https://www.gnu.org/licenses/>.
 
 
-use reqwest::ClientBuilder;
 use serde::Deserialize;
 use thiserror;
 
@@ -30,11 +29,11 @@ const USER_AGENT: &'static str = concat!(
 
 #[derive(Debug, thiserror::Error)]
 pub enum Error {
-    #[error("request error")]
-    Http(#[from] reqwest::Error),
+    #[error("GitHub request error")]
+    Http(#[from] ureq::Error),
 
-    #[error("request header error")]
-    Header(#[from] reqwest::header::InvalidHeaderValue),
+    #[error("GitHub I/O error")]
+    Io(#[from] std::io::Error),
 }
 
 
@@ -61,30 +60,24 @@ impl Repo {
 
 
 /// Fetch all GitHub repositories for the given user.
-pub async fn fetch_repos(github_username: &str) -> Result<Vec<Repo>, Error> {
-    let mut headers = reqwest::header::HeaderMap::new();
-    headers.insert("Accept", "application/vnd.github.v3+json".parse()?);
-
-    let client = ClientBuilder::new()
+pub fn fetch_repos(github_username: &str) -> Result<Vec<Repo>, Error> {
+    let agent = ureq::AgentBuilder::new()
         .user_agent(USER_AGENT)
-        .default_headers(headers)
-        .build()?;
+        .build();
 
     let mut repos = Vec::new();
 
     for i in 1.. {
-        let repo_page = client.request(
-            reqwest::Method::GET,
-            format!(
+        let repo_page: Vec<Repo> = agent.get(
+            &format!(
                 "https://api.github.com/users/{}/repos?page={}&per_page=100&sort=updated",
                 github_username,
                 i,
             ),
         )
-            .send()
-            .await?
-            .json::<Vec<Repo>>()
-            .await?;
+            .set("Accept", "application/vnd.github.v3+json")
+            .call()?
+            .into_json()?;
 
         if repo_page.is_empty() {
             break;
diff --git a/src/main.rs b/src/main.rs
index 4b36264..4e4d580 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -24,8 +24,6 @@ use filetime;
 use getopts::Options;
 use parse_size::parse_size;
 use rusqlite;
-use tokio;
-use tokio_stream::StreamExt;
 
 use reflectub::{database, git, github};
 
@@ -38,18 +36,7 @@ use std::sync::{Arc, Mutex};
 
 
 fn main() {
-    let rt = tokio::runtime::Builder::new_multi_thread()
-        .enable_io()
-        .enable_time()
-        .worker_threads(4)
-        .build()
-        .unwrap();
-    // let rt = tokio::runtime::Runtime::new()
-    let _rt_guard = rt.enter();
-
-    let result = rt.block_on(run());
-
-    match result {
+    match run() {
         Ok(_) => (),
         Err(e) => {
             eprint!("error");
@@ -72,7 +59,7 @@ fn print_usage(opts: &Options) {
     );
 }
 
-async fn run() -> anyhow::Result<()> {
+fn run() -> anyhow::Result<()> {
     let args: Vec<String> = env::args().collect();
 
     let mut opts = Options::new();
@@ -123,7 +110,7 @@ async fn run() -> anyhow::Result<()> {
     let base_cgitrc = opt_matches.opt_str("cgitrc")
         .map(|s| PathBuf::from(s));
 
-    let repos = github::fetch_repos(username).await?;
+    let repos = github::fetch_repos(username)?;
 
     let mut db = database::Db::connect(&database_file)
         .context("unable to connect to database")?;