chore: checkpoint before Python removal

vendor/tokio/src/fs/rename.rs

@@ -0,0 +1,17 @@
+use crate::fs::asyncify;
+
+use std::io;
+use std::path::Path;
+
+/// Renames a file or directory to a new name, replacing the original file if
+/// `to` already exists.
+///
+/// This will not work if the new name is on a different mount point.
+///
+/// This is an async version of [`std::fs::rename`].
+pub async fn rename(from: impl AsRef<Path>, to: impl AsRef<Path>) -> io::Result<()> {
+    let from = from.as_ref().to_owned();
+    let to = to.as_ref().to_owned();
+
+    asyncify(move || std::fs::rename(from, to)).await
+}