message: Limit maximum uploads to a reasonable number
  Partially addresses
diff: @@ -18,7 +18,7 @@ use rusoto_core::region::Region;
  use rusoto_credential::DefaultCredentialsProvider;
  use std::ffi::OsStr;
  -const MAX_CONCURRENT_UPLOADS: usize = 1000;
  +const MAX_CONCURRENT_UPLOADS: usize = 50;
  pub(super) static S3_BUCKET_NAME: &str = "rust-docs-rs";
  