From 9c00598f338eff002eb083493927f706022aaee5 Mon Sep 17 00:00:00 2001
From: "Dustin J. Mitchell" <djmitche@google.com>
Date: Wed, 20 Dec 2023 23:53:45 -0500
Subject: [PATCH] WIP s3

---
 Cargo.lock                           | 947 +++++++++++++++++++++++++--
 Cargo.toml                           |   2 +
 taskchampion/taskchampion/Cargo.toml |   7 +
 3 files changed, 905 insertions(+), 51 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 9fbee07ec..202eff891 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -307,12 +307,414 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "aws-config"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11382bd8ac4c6c182a9775990935f96c916a865f1414486595f18eb8cfa9d90b"
+dependencies = [
+ "aws-credential-types",
+ "aws-http",
+ "aws-runtime",
+ "aws-sdk-sso",
+ "aws-sdk-ssooidc",
+ "aws-sdk-sts",
+ "aws-smithy-async",
+ "aws-smithy-http",
+ "aws-smithy-json",
+ "aws-smithy-runtime",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-types",
+ "bytes",
+ "fastrand 2.0.1",
+ "hex",
+ "http",
+ "hyper",
+ "ring 0.17.7",
+ "time 0.3.20",
+ "tokio",
+ "tracing",
+ "zeroize",
+]
+
+[[package]]
+name = "aws-credential-types"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70a1629320d319dc715c6189b172349186557e209d2a7b893ff3d14efd33a47c"
+dependencies = [
+ "aws-smithy-async",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "zeroize",
+]
+
+[[package]]
+name = "aws-http"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30e4199d5d62ab09be6a64650c06cc5c4aa45806fed4c74bc4a5c8eaf039a6fa"
+dependencies = [
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-types",
+ "bytes",
+ "http",
+ "http-body",
+ "pin-project-lite",
+ "tracing",
+]
+
+[[package]]
+name = "aws-runtime"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87116d357c905b53f1828d15366363fd27b330a0393cbef349e653f686d36bad"
+dependencies = [
+ "aws-credential-types",
+ "aws-http",
+ "aws-sigv4",
+ "aws-smithy-async",
+ "aws-smithy-eventstream",
+ "aws-smithy-http",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-types",
+ "fastrand 2.0.1",
+ "http",
+ "percent-encoding",
+ "tracing",
+ "uuid",
+]
+
+[[package]]
+name = "aws-sdk-s3"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "27f89aed8bb54ff816b860cda5d6f010cf54b7b64a46bb66e3edd1063ac5f36e"
+dependencies = [
+ "aws-credential-types",
+ "aws-http",
+ "aws-runtime",
+ "aws-sigv4",
+ "aws-smithy-async",
+ "aws-smithy-checksums",
+ "aws-smithy-eventstream",
+ "aws-smithy-http",
+ "aws-smithy-json",
+ "aws-smithy-runtime",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-smithy-xml",
+ "aws-types",
+ "bytes",
+ "http",
+ "http-body",
+ "once_cell",
+ "percent-encoding",
+ "regex-lite",
+ "tracing",
+ "url",
+]
+
+[[package]]
+name = "aws-sdk-sso"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c8539671a6e0ca087464f784576b42796ed934a566b3c1263dcf2a88494d067"
+dependencies = [
+ "aws-credential-types",
+ "aws-http",
+ "aws-runtime",
+ "aws-smithy-async",
+ "aws-smithy-http",
+ "aws-smithy-json",
+ "aws-smithy-runtime",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-types",
+ "bytes",
+ "http",
+ "once_cell",
+ "regex-lite",
+ "tracing",
+]
+
+[[package]]
+name = "aws-sdk-ssooidc"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f96ac3757df21b29102edd909884ceb8d118b96b5e45546b8bb59b8a9a8eb85a"
+dependencies = [
+ "aws-credential-types",
+ "aws-http",
+ "aws-runtime",
+ "aws-smithy-async",
+ "aws-smithy-http",
+ "aws-smithy-json",
+ "aws-smithy-runtime",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-types",
+ "bytes",
+ "http",
+ "once_cell",
+ "regex-lite",
+ "tracing",
+]
+
+[[package]]
+name = "aws-sdk-sts"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fe238802a9ad92721c23fd0b1d52284ec9e3565d6d0a12243608833e2655abb"
+dependencies = [
+ "aws-credential-types",
+ "aws-http",
+ "aws-runtime",
+ "aws-smithy-async",
+ "aws-smithy-http",
+ "aws-smithy-json",
+ "aws-smithy-query",
+ "aws-smithy-runtime",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "aws-smithy-xml",
+ "aws-types",
+ "http",
+ "once_cell",
+ "regex-lite",
+ "tracing",
+]
+
+[[package]]
+name = "aws-sigv4"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d222297ca90209dc62245f0a490355795f29de362eb5c19caea4f7f55fe69078"
+dependencies = [
+ "aws-credential-types",
+ "aws-smithy-eventstream",
+ "aws-smithy-http",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "bytes",
+ "crypto-bigint 0.5.5",
+ "form_urlencoded",
+ "hex",
+ "hmac",
+ "http",
+ "once_cell",
+ "p256",
+ "percent-encoding",
+ "ring 0.17.7",
+ "sha2",
+ "subtle",
+ "time 0.3.20",
+ "tracing",
+ "zeroize",
+]
+
+[[package]]
+name = "aws-smithy-async"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9f65000917e3aa94c259d67fe01fa9e4cd456187d026067d642436e6311a81"
+dependencies = [
+ "futures-util",
+ "pin-project-lite",
+ "tokio",
+]
+
+[[package]]
+name = "aws-smithy-checksums"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c2a63681f82fb85ca58d566534b7dc619c782fee0c61c1aa51e2b560c21cb4f"
+dependencies = [
+ "aws-smithy-http",
+ "aws-smithy-types",
+ "bytes",
+ "crc32c",
+ "crc32fast",
+ "hex",
+ "http",
+ "http-body",
+ "md-5",
+ "pin-project-lite",
+ "sha1",
+ "sha2",
+ "tracing",
+]
+
+[[package]]
+name = "aws-smithy-eventstream"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a85e16fa903c70c49ab3785e5f4ac2ad2171b36e0616f321011fa57962404bb6"
+dependencies = [
+ "aws-smithy-types",
+ "bytes",
+ "crc32fast",
+]
+
+[[package]]
+name = "aws-smithy-http"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e4e816425a6b9caea4929ac97d0cb33674849bd5f0086418abc0d02c63f7a1bf"
+dependencies = [
+ "aws-smithy-eventstream",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "bytes",
+ "bytes-utils",
+ "futures-core",
+ "http",
+ "http-body",
+ "once_cell",
+ "percent-encoding",
+ "pin-project-lite",
+ "pin-utils",
+ "tracing",
+]
+
+[[package]]
+name = "aws-smithy-json"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ab3f6d49e08df2f8d05e1bb5b68998e1e67b76054d3c43e7b954becb9a5e9ac"
+dependencies = [
+ "aws-smithy-types",
+]
+
+[[package]]
+name = "aws-smithy-query"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f94a7a3aa509ff9e8b8d80749851d04e5eee0954c43f2e7d6396c4740028737"
+dependencies = [
+ "aws-smithy-types",
+ "urlencoding",
+]
+
+[[package]]
+name = "aws-smithy-runtime"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8da5b0a3617390e769576321816112f711c13d7e1114685e022505cf51fe5e48"
+dependencies = [
+ "aws-smithy-async",
+ "aws-smithy-http",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "bytes",
+ "fastrand 2.0.1",
+ "h2",
+ "http",
+ "http-body",
+ "hyper",
+ "hyper-rustls",
+ "once_cell",
+ "pin-project-lite",
+ "pin-utils",
+ "rustls",
+ "tokio",
+ "tracing",
+]
+
+[[package]]
+name = "aws-smithy-runtime-api"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2404c9eb08bfe9af255945254d9afc69a367b7ee008b8db75c05e3bca485fc65"
+dependencies = [
+ "aws-smithy-async",
+ "aws-smithy-types",
+ "bytes",
+ "http",
+ "pin-project-lite",
+ "tokio",
+ "tracing",
+ "zeroize",
+]
+
+[[package]]
+name = "aws-smithy-types"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2aba8136605d14ac88f57dc3a693a9f8a4eab4a3f52bc03ff13746f0cd704e97"
+dependencies = [
+ "base64-simd",
+ "bytes",
+ "bytes-utils",
+ "futures-core",
+ "http",
+ "http-body",
+ "itoa",
+ "num-integer",
+ "pin-project-lite",
+ "pin-utils",
+ "ryu",
+ "serde",
+ "time 0.3.20",
+ "tokio",
+ "tokio-util",
+]
+
+[[package]]
+name = "aws-smithy-xml"
+version = "0.60.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e8f03926587fc881b12b102048bb04305bf7fb8c83e776f0ccc51eaa2378263"
+dependencies = [
+ "xmlparser",
+]
+
+[[package]]
+name = "aws-types"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e5d5ee29077e0fcd5ddd0c227b521a33aaf02434b7cdba1c55eec5c1f18ac47"
+dependencies = [
+ "aws-credential-types",
+ "aws-smithy-async",
+ "aws-smithy-runtime-api",
+ "aws-smithy-types",
+ "http",
+ "rustc_version",
+ "tracing",
+]
+
+[[package]]
+name = "base16ct"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349a06037c7bf932dd7e7d1f653678b2038b9ad46a74102f1fc7bd7872678cce"
+
 [[package]]
 name = "base64"
 version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a4a4ddaa51a5bc52a6948f74c06d20aaaddb71924eab79b8c97a8c556e942d6a"
 
+[[package]]
+name = "base64-simd"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "339abbe78e73178762e23bea9dfd08e697eb3f3301cd4be981c0f78ba5859195"
+dependencies = [
+ "outref",
+ "vsimd",
+]
+
+[[package]]
+name = "base64ct"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
+
 [[package]]
 name = "bit-set"
 version = "0.5.2"
@@ -388,6 +790,16 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
+[[package]]
+name = "bytes-utils"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7dafe3a8757b027e2be6e4e5601ed563c55989fcf1546e933c66c8eb3a058d35"
+dependencies = [
+ "bytes",
+ "either",
+]
+
 [[package]]
 name = "bytestring"
 version = "1.0.0"
@@ -399,11 +811,12 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.0.73"
+version = "1.0.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
+checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
 dependencies = [
  "jobserver",
+ "libc",
 ]
 
 [[package]]
@@ -462,6 +875,12 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
 
+[[package]]
+name = "const-oid"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
+
 [[package]]
 name = "convert_case"
 version = "0.4.0"
@@ -479,6 +898,16 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "194a7a9e6de53fa55116934067c844d9d749312f75c6f6d0980e8c252f8c2146"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.3"
@@ -494,6 +923,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "crc32c"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8f48d60e5b4d2c53d5c2b1d8a58c849a70ae5e5509b08a48d047e3b65714a74"
+dependencies = [
+ "rustc_version",
+]
+
 [[package]]
 name = "crc32fast"
 version = "1.3.2"
@@ -503,6 +941,28 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crypto-bigint"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef2b4b23cddf68b89b8f8069890e8c270d54e2d5fe1b143820234805e4cb17ef"
+dependencies = [
+ "generic-array",
+ "rand_core",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto-bigint"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0dc92fb57ca44df6db8059111ab3af99a63d5d0f8375d9972e319a379c6bab76"
+dependencies = [
+ "rand_core",
+ "subtle",
+]
+
 [[package]]
 name = "crypto-common"
 version = "0.1.6"
@@ -513,6 +973,16 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "der"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1a467a65c5e759bce6e65eaf91cc29f466cdc57cb65777bd646872a8a1fd4de"
+dependencies = [
+ "const-oid",
+ "zeroize",
+]
+
 [[package]]
 name = "derive_more"
 version = "0.99.17"
@@ -534,12 +1004,25 @@ checksum = "0e25ea47919b1560c4e3b7fe0aaab9becf5b84a10325ddf7db0f0ba5e1026499"
 
 [[package]]
 name = "digest"
-version = "0.10.6"
+version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8168378f4e5023e7218c89c891c0fd8ecdb5e5e4f18cb78f38cf245dd021e76f"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer",
  "crypto-common",
+ "subtle",
+]
+
+[[package]]
+name = "ecdsa"
+version = "0.14.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413301934810f597c1d19ca71c8710e99a3f1ba28a0d2ebc01551a2daeea3c5c"
+dependencies = [
+ "der",
+ "elliptic-curve",
+ "rfc6979",
+ "signature",
 ]
 
 [[package]]
@@ -548,6 +1031,26 @@ version = "1.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
 
+[[package]]
+name = "elliptic-curve"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7bb888ab5300a19b8e5bceef25ac745ad065f3c9f7efc6de1b91958110891d3"
+dependencies = [
+ "base16ct",
+ "crypto-bigint 0.4.9",
+ "der",
+ "digest",
+ "ff",
+ "generic-array",
+ "group",
+ "pkcs8",
+ "rand_core",
+ "sec1",
+ "subtle",
+ "zeroize",
+]
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.31"
@@ -612,6 +1115,22 @@ dependencies = [
  "instant",
 ]
 
+[[package]]
+name = "fastrand"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25cbce373ec4653f1a01a31e8a5e5ec0c622dc27ff9c4e6606eefef5cbbed4a5"
+
+[[package]]
+name = "ff"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d013fc25338cc558c5c2cfbad646908fb23591e2404481826742b651c9af7160"
+dependencies = [
+ "rand_core",
+ "subtle",
+]
+
 [[package]]
 name = "ffizz-header"
 version = "0.5.0"
@@ -653,11 +1172,10 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "form_urlencoded"
-version = "1.0.1"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fc25a87fa4fd2094bffb06925852034d90a17f0d1e05197d4956d3555752191"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
 dependencies = [
- "matches",
  "percent-encoding",
 ]
 
@@ -768,15 +1286,26 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.2.9"
+version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c85e1d9ab2eadba7e5040d4e09cbd6d072b76a557ad64e797c2cb9d4da21d7e4"
+checksum = "fe9006bed769170c11f845cf00c7c1e9092aeb3f268e007c3e760ac68008070f"
 dependencies = [
  "cfg-if",
  "libc",
  "wasi",
 ]
 
+[[package]]
+name = "group"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5dfbfb3a6cfbd390d5c9564ab283a0349b9b9fcd46a706c1eb10e0db70bfbac7"
+dependencies = [
+ "ff",
+ "rand_core",
+ "subtle",
+]
+
 [[package]]
 name = "h2"
 version = "0.3.17"
@@ -841,6 +1370,21 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
 
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
+[[package]]
+name = "hmac"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
+dependencies = [
+ "digest",
+]
+
 [[package]]
 name = "http"
 version = "0.2.9"
@@ -852,11 +1396,22 @@ dependencies = [
  "itoa",
 ]
 
+[[package]]
+name = "http-body"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ceab25649e9960c0311ea418d17bee82c0dcec1bd053b5f9a66e265a693bed2"
+dependencies = [
+ "bytes",
+ "http",
+ "pin-project-lite",
+]
+
 [[package]]
 name = "httparse"
-version = "1.7.1"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "496ce29bb5a52785b44e0f7ca2847ae0bb839c9bd28f69acac9b99d461c0c04c"
+checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
 
 [[package]]
 name = "httpdate"
@@ -870,6 +1425,46 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
+[[package]]
+name = "hyper"
+version = "0.14.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf96e135eb83a2a8ddf766e426a841d8ddd7449d5f00d34ea02b41d2f19eef80"
+dependencies = [
+ "bytes",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "h2",
+ "http",
+ "http-body",
+ "httparse",
+ "httpdate",
+ "itoa",
+ "pin-project-lite",
+ "socket2",
+ "tokio",
+ "tower-service",
+ "tracing",
+ "want",
+]
+
+[[package]]
+name = "hyper-rustls"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec3efd23720e2049821a693cbc7e65ea87c72f1c58ff2f9522ff332b1491e590"
+dependencies = [
+ "futures-util",
+ "http",
+ "hyper",
+ "log",
+ "rustls",
+ "rustls-native-certs",
+ "tokio",
+ "tokio-rustls",
+]
+
 [[package]]
 name = "iana-time-zone"
 version = "0.1.47"
@@ -886,11 +1481,10 @@ dependencies = [
 
 [[package]]
 name = "idna"
-version = "0.2.3"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "418a0a6fab821475f634efe3ccc45c013f742efe03d853e8d3355d5cb850ecf8"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
 dependencies = [
- "matches",
  "unicode-bidi",
  "unicode-normalization",
 ]
@@ -1002,9 +1596,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.146"
+version = "0.2.151"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f92be4933c13fd498862a9e02a3055f8a8d9c039ce33db97306fd5a6caa7f29b"
+checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
 
 [[package]]
 name = "libm"
@@ -1087,10 +1681,14 @@ dependencies = [
 ]
 
 [[package]]
-name = "matches"
-version = "0.1.9"
+name = "md-5"
+version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
+checksum = "d89e7ee0cfbedfc4da3340218492196241d89eefb6dab27de5df917a6d2e78cf"
+dependencies = [
+ "cfg-if",
+ "digest",
+]
 
 [[package]]
 name = "memchr"
@@ -1157,9 +1755,32 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.13.1"
+version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "074864da206b4973b84eb91683020dbefd6a8c3f0f38e054d93954e891935e4e"
+checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+
+[[package]]
+name = "openssl-probe"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
+
+[[package]]
+name = "outref"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4030760ffd992bef45b0ae3f10ce1aba99e33464c90d14dd7c039884963ddc7a"
+
+[[package]]
+name = "p256"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51f44edd08f51e2ade572f141051021c5af22677e42b7dd28a88155151c33594"
+dependencies = [
+ "ecdsa",
+ "elliptic-curve",
+ "sha2",
+]
 
 [[package]]
 name = "parking_lot"
@@ -1192,9 +1813,9 @@ checksum = "9f746c4065a8fa3fe23974dd82f15431cc8d40779821001404d10d2e79ca7d79"
 
 [[package]]
 name = "percent-encoding"
-version = "2.1.0"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "pin-project-lite"
@@ -1208,6 +1829,16 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
+[[package]]
+name = "pkcs8"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9eca2c590a5f85da82668fa685c09ce2888b9430e83299debf1f34b65fd4a4ba"
+dependencies = [
+ "der",
+ "spki",
+]
+
 [[package]]
 name = "pkg-config"
 version = "0.3.25"
@@ -1297,9 +1928,9 @@ dependencies = [
 
 [[package]]
 name = "rand_core"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
  "getrandom",
 ]
@@ -1354,12 +1985,29 @@ dependencies = [
  "regex-syntax",
 ]
 
+[[package]]
+name = "regex-lite"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30b661b2f27137bdbc16f00eda72866a92bb28af1753ffbd56744fb6e2e9cd8e"
+
 [[package]]
 name = "regex-syntax"
 version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
 
+[[package]]
+name = "rfc6979"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7743f17af12fa0b03b803ba12cd6a8d9483a587e89c69445e3909655c0b9fabb"
+dependencies = [
+ "crypto-bigint 0.4.9",
+ "hmac",
+ "zeroize",
+]
+
 [[package]]
 name = "ring"
 version = "0.16.20"
@@ -1369,12 +2017,26 @@ dependencies = [
  "cc",
  "libc",
  "once_cell",
- "spin",
- "untrusted",
+ "spin 0.5.2",
+ "untrusted 0.7.1",
  "web-sys",
  "winapi",
 ]
 
+[[package]]
+name = "ring"
+version = "0.17.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "688c63d65483050968b2a8937f7995f443e27041a0f7700aa59b0822aedebb74"
+dependencies = [
+ "cc",
+ "getrandom",
+ "libc",
+ "spin 0.9.8",
+ "untrusted 0.9.0",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "rstest"
 version = "0.17.0"
@@ -1440,24 +2102,45 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.21.7"
+version = "0.21.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd8d6c9f025a446bc4d18ad9632e69aec8f287aa84499ee335599fabd20c3fd8"
+checksum = "f9d5a6813c0759e4609cd494e8e725babae6a2ca7b62a5536a13daaec6fcb7ba"
 dependencies = [
  "log",
- "ring",
+ "ring 0.17.7",
  "rustls-webpki",
  "sct",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9aace74cb666635c918e9c12bc0d348266037aa8eb599b5cba565709a8dff00"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile",
+ "schannel",
+ "security-framework",
+]
+
+[[package]]
+name = "rustls-pemfile"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c74cae0a4cf6ccbbf5f359f08efdf8ee7e1dc532573bf0db71968cb56b1448c"
+dependencies = [
+ "base64",
+]
+
 [[package]]
 name = "rustls-webpki"
-version = "0.101.6"
+version = "0.101.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c7d5dece342910d9ba34d259310cae3e0154b873b35408b787b59bce53d34fe"
+checksum = "8b6275d1ee7a1cd780b64aca7726599a1dbc893b1e64144529e55c3c2f745765"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.17.7",
+ "untrusted 0.9.0",
 ]
 
 [[package]]
@@ -1484,6 +2167,15 @@ version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695"
 
+[[package]]
+name = "schannel"
+version = "0.1.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c3733bf4cf7ea0880754e19cb5a462007c4a8c1914bff372ccc95b464f1df88"
+dependencies = [
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "scopeguard"
 version = "1.1.0"
@@ -1496,8 +2188,45 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d53dcdb7c9f8158937a7981b48accfd39a43af418591a5d008c7b22b5e1b7ca4"
 dependencies = [
- "ring",
- "untrusted",
+ "ring 0.16.20",
+ "untrusted 0.7.1",
+]
+
+[[package]]
+name = "sec1"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be24c1842290c45df0a7bf069e0c268a747ad05a192f2fd7dcfdbc1cba40928"
+dependencies = [
+ "base16ct",
+ "der",
+ "generic-array",
+ "pkcs8",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "security-framework"
+version = "2.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05b64fb303737d99b81884b2c63433e9ae28abebe5eb5045dcdd175dc2ecf4de"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "core-foundation-sys",
+ "libc",
+ "security-framework-sys",
+]
+
+[[package]]
+name = "security-framework-sys"
+version = "2.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e932934257d3b408ed8f30db49d85ea163bfe74961f017f405b025af298f0c7a"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
 ]
 
 [[package]]
@@ -1560,6 +2289,17 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sha2"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82e6b795fe2e3b1e845bafcb27aa35405c4d47cdfc92af5fc8d3002f76cebdc0"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.0"
@@ -1569,6 +2309,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "signature"
+version = "1.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74233d3b3b2f6d4b006dc19dee745e73e2a6bfb6f93607cd3b02bd5b00797d7c"
+dependencies = [
+ "digest",
+ "rand_core",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.6"
@@ -1597,6 +2347,22 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
+[[package]]
+name = "spki"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67cf02bbac7a337dc36e4f5a693db6c21e7863f45070f7064577eb4367a3212b"
+dependencies = [
+ "base64ct",
+ "der",
+]
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -1622,6 +2388,12 @@ dependencies = [
  "syn 2.0.18",
 ]
 
+[[package]]
+name = "subtle"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
+
 [[package]]
 name = "syn"
 version = "1.0.104"
@@ -1649,13 +2421,15 @@ name = "taskchampion"
 version = "0.4.1"
 dependencies = [
  "anyhow",
+ "aws-config",
+ "aws-sdk-s3",
  "byteorder",
  "chrono",
  "flate2",
  "log",
  "pretty_assertions",
  "proptest",
- "ring",
+ "ring 0.16.20",
  "rstest",
  "rusqlite",
  "serde",
@@ -1708,7 +2482,7 @@ checksum = "31c0432476357e58790aaa47a8efb0c5138f137343f3b5f23bd36a27e3b0a6d6"
 dependencies = [
  "autocfg",
  "cfg-if",
- "fastrand",
+ "fastrand 1.7.0",
  "redox_syscall 0.3.5",
  "rustix",
  "windows-sys 0.48.0",
@@ -1812,6 +2586,16 @@ dependencies = [
  "windows-sys 0.45.0",
 ]
 
+[[package]]
+name = "tokio-rustls"
+version = "0.24.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c28327cf380ac148141087fbfb9de9d7bd4e84ab5d2c28fbc911d753de8a7081"
+dependencies = [
+ "rustls",
+ "tokio",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.7.7"
@@ -1826,27 +2610,50 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower-service"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
+
 [[package]]
 name = "tracing"
-version = "0.1.34"
+version = "0.1.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d0ecdcb44a79f0fe9844f0c4f33a342cbcbb5117de8001e6ba0dc2351327d09"
+checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
 dependencies = [
- "cfg-if",
  "log",
  "pin-project-lite",
+ "tracing-attributes",
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-attributes"
+version = "0.1.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.18",
+]
+
 [[package]]
 name = "tracing-core"
-version = "0.1.26"
+version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f54c8ca710e81886d498c2fd3331b56c93aa248d49de2222ad2742247c60072f"
+checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
 dependencies = [
- "lazy_static",
+ "once_cell",
 ]
 
+[[package]]
+name = "try-lock"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
+
 [[package]]
 name = "typenum"
 version = "1.15.0"
@@ -1861,9 +2668,9 @@ checksum = "eaea85b334db583fe3274d12b4cd1880032beab409c0d774be044d4480ab9a94"
 
 [[package]]
 name = "unicode-bidi"
-version = "0.3.8"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "099b7128301d285f79ddd55b9a83d5e6b9e97c92e0ea0daebee7263e932de992"
+checksum = "6f2528f27a9eb2b21e69c95319b30bd0efd85d09c379741b0f78ea1d86be2416"
 
 [[package]]
 name = "unicode-ident"
@@ -1873,9 +2680,9 @@ checksum = "6ceab39d59e4c9499d4e5a8ee0e2735b891bb7308ac83dfb4e80cad195c9f6f3"
 
 [[package]]
 name = "unicode-normalization"
-version = "0.1.19"
+version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d54590932941a9e9266f0832deed84ebe1bf2e4c9e4a3554d393d18f5e854bf9"
+checksum = "5c5713f0fc4b5db668a2ac63cdb7bb4469d8c9fed047b1d0292cc7b0ce2ba921"
 dependencies = [
  "tinyvec",
 ]
@@ -1886,6 +2693,12 @@ version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
 [[package]]
 name = "ureq"
 version = "2.9.0"
@@ -1904,16 +2717,21 @@ dependencies = [
 
 [[package]]
 name = "url"
-version = "2.2.2"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507c383b2d33b5fc35d1861e77e6b383d158b2da5e14fe51b83dfedf6fd578c"
+checksum = "31e6302e3bb753d46e83516cae55ae196fc0c309407cf11ab35cc51a4c2a4633"
 dependencies = [
  "form_urlencoded",
  "idna",
- "matches",
  "percent-encoding",
 ]
 
+[[package]]
+name = "urlencoding"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
+
 [[package]]
 name = "utf8parse"
 version = "0.2.1"
@@ -1942,6 +2760,12 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
+[[package]]
+name = "vsimd"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c3082ca00d5a5ef149bb8b555a72ae84c9c59f7250f013ac822ac2e49b19c64"
+
 [[package]]
 name = "wait-timeout"
 version = "0.2.0"
@@ -1951,6 +2775,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "want"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa7760aed19e106de2c7c0b581b509f2f25d3dacaf737cb82ac61bc6d760b0e"
+dependencies = [
+ "try-lock",
+]
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -2190,6 +3023,12 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
 
+[[package]]
+name = "xmlparser"
+version = "0.13.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66fee0b777b0f5ac1c69bb06d361268faafa61cd4682ae064a171c16c433e9e4"
+
 [[package]]
 name = "xtask"
 version = "0.4.1"
@@ -2205,6 +3044,12 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09041cd90cf85f7f8b2df60c646f853b7f535ce68f85244eb6731cf89fa498ec"
 
+[[package]]
+name = "zeroize"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "525b4ec142c6b68a2d10f01f7bbf6755599ca3f81ea53b8431b7dd348f5fdb2d"
+
 [[package]]
 name = "zstd"
 version = "0.12.3+zstd.1.5.2"
diff --git a/Cargo.toml b/Cargo.toml
index 88d53382b..7e665e97a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,6 +16,8 @@ exclude = [ "src/tc/rust" ]
 [workspace.dependencies]
 actix-rt = "2"
 actix-web = "^4.3.1"
+aws-config = { version = "1", features = ["behavior-version-latest"] }
+aws-sdk-s3 = { version = "1" }
 anyhow = "1.0"
 byteorder = "1.5"
 cc = "1.0.73"
diff --git a/taskchampion/taskchampion/Cargo.toml b/taskchampion/taskchampion/Cargo.toml
index e96612a8c..7f0a9c5c7 100644
--- a/taskchampion/taskchampion/Cargo.toml
+++ b/taskchampion/taskchampion/Cargo.toml
@@ -10,6 +10,9 @@ readme = "../README.md"
 license = "MIT"
 edition = "2018"
 
+[features]
+sync-s3 = ["dep:aws-config", "dep:aws-sdk-s3"]
+
 [dependencies]
 uuid.workspace = true
 serde.workspace = true
@@ -25,6 +28,10 @@ strum_macros.workspace = true
 flate2.workspace = true
 byteorder.workspace = true
 ring.workspace = true
+aws-config.workspace = true
+aws-config.optional = true
+aws-sdk-s3.workspace = true
+aws-sdk-s3.optional = true
 
 [dev-dependencies]
 proptest.workspace = true