Fix sqlx compilation errors

products/pdt/.gitignore

@@ -1,2 +1,6 @@
 target/
-.vscode/
+.vscode/
+# Target for downloaded files
+downloads/
+# Stores download metadata
+meta.json

products/pdt/README.md

@@ -23,7 +23,7 @@ cargo run -- --download-dir=<your_download_dir> --unpack-dir=<your_unpacking_dir
 For Postgres, make sure your database is created and run
 
 ```bash
-cargo run -- --download-dir=<your_download_dir> --unpack-dir=<your_unpacking_dir> --postgres_url=<your_postgres_url> psqlmulti --nr-threads=<n> --batch-blocks=<n> --partition_size=10000
+cargo run -- --download-dir=<your_download_dir> --unpack-dir=<your_unpacking_dir> --postgres-url=<your_postgres_url> psqlmulti --nr-threads=<n> --batch-blocks=<n> --partition-size=10000
 ```
 
 All our import operations are multithreaded. Each thread will create a duplicate

products/pdt/pdtlib/src/context.rs

@@ -179,7 +179,7 @@ fn make_unsigned<O, Retry>(
 ) -> Result<aws_smithy_http::operation::Operation<O, Retry>, std::convert::Infallible> {
     {
         let mut props = operation.properties_mut();
-        let mut signing_config = props
+        let signing_config = props
             .get_mut::<aws_sig_auth::signer::OperationSigningConfig>()
             .expect("has signing_config");
         signing_config.signing_requirements = aws_sig_auth::signer::SigningRequirements::Disabled;