Update object store MSRV to 1.64 (#6123)

* Update MSRV to 1.64

* Revert "clippy ignore"

This reverts commit 7a4b760.

Author: alamb

object_store/Cargo.toml

@@ -24,7 +24,7 @@ readme = "README.md"
 description = "A generic object store interface for uniformly interacting with AWS S3, Google Cloud Storage, Azure Blob Storage and local files."
 keywords = ["object", "storage", "cloud"]
 repository = "https://github.com/apache/arrow-rs/tree/master/object_store"
-rust-version = "1.62.1"
+rust-version = "1.64.0"
 
 [package.metadata.docs.rs]
 all-features = true

object_store/src/client/mock_server.rs

@@ -60,8 +60,6 @@ impl MockServer {
             let mut set = JoinSet::new();
 
             loop {
-                // https://github.com/apache/arrow-rs/issues/6122
-                #[allow(clippy::incompatible_msrv)]
                 let (stream, _) = tokio::select! {
                     conn = listener.accept() => conn.unwrap(),
                     _ = &mut rx => break,