RUST-2265: cherrypick #1453 for 3.2.5#1455

abr-egn merged 3 commits intomongodb:3.2.xmongodb/mongo-rust-driver:3.2.xfrom

abr-egn:RUST-2265/release-3.2.5-cherrypickabr-egn/mongo-rust-driver:RUST-2265/release-3.2.5-cherrypickCopy head branch name to clipboard