percent-decode incoming S3 keys

it seems like this is new since the last time we deployed? who knows

Cargo.toml

@@ -9,12 +9,13 @@ default-run = "kirby"
 [dependencies]
 argparse = "0.2.2"
 aws_lambda = { git = "https://github.com/srijs/rust-aws-lambda" }
+enum-map = { version = "0.4.1", features = ["serde"] }
 flate2 = { version = "1.0", features = ["zlib"], default-features = false }
 futures = "0.3"
 lazy_static = "1.1.0"
-enum-map = { version = "0.4.1", features = ["serde"] }
 log = "0.4.5"
 nom = "4.0"
+percent-encoding = "2.1.0" 
 rayon = "1.0.2"
 regex = "1"
 rusoto_core = { version="0.42", default_features=false, features=["rustls"] }

src/bin/kirby-s3.rs

@@ -14,6 +14,7 @@ use std::io::BufRead;
 use std::io::BufReader;
 use std::io::Cursor;
 use std::io::Read;
+use percent_encoding::percent_decode;
 
 use kirby::Options;
 use kirby::stream_stats;
@@ -70,7 +71,8 @@ fn main() {
 
     for record in input.records {
       if let Some(bucket_name) = record.s3.bucket.name {
-        if let Some(key) = record.s3.object.key {
+        if let Some(url_key) = record.s3.object.key {
+          let key = percent_decode(url_key.as_bytes()).decode_utf8()?;
           info!(
             "{} downloading {}/{}",
             time::now_utc().rfc3339(),