cd /Users/alamb/Software/arrow-rs2 && RUST_LOG=trace RUST_BACKTRACE=1 CARGO_TARGET_DIR=/Users/alamb/Software/df-target2 cargo test -p object_store --features=aws,azure,azure_test,gcp
   Compiling object_store v0.3.0 (/Users/alamb/Software/arrow-rs2/object_store)
error[E0599]: `Pin<Box<dyn futures::Stream<Item = std::result::Result<ObjectMeta, Error>> + std::marker::Send>>` is not an iterator
   --> object_store/src/lib.rs:699:27
    |
699 |         assert_eq!(stream.count().await, 0);
    |                           ^^^^^ `Pin<Box<dyn futures::Stream<Item = std::result::Result<ObjectMeta, Error>> + std::marker::Send>>` is not an iterator
    |
   ::: /Users/alamb/.rustup/toolchains/stable-x86_64-apple-darwin/lib/rustlib/src/rust/library/core/src/pin.rs:408:1
    |
408 | pub struct Pin<P> {
    | ----------------- doesn't satisfy `_: Iterator`
    |
   ::: /Users/alamb/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-core-0.3.17/src/stream.rs:27:1
    |
27  | pub trait Stream {
    | ---------------- doesn't satisfy `_: Iterator`
    |
    = note: the following trait bounds were not satisfied:
            `Pin<Box<dyn futures::Stream<Item = std::result::Result<ObjectMeta, Error>> + std::marker::Send>>: Iterator`
            which is required by `&mut Pin<Box<dyn futures::Stream<Item = std::result::Result<ObjectMeta, Error>> + std::marker::Send>>: Iterator`
            `dyn futures::Stream<Item = std::result::Result<ObjectMeta, Error>> + std::marker::Send: Iterator`
            which is required by `&mut dyn futures::Stream<Item = std::result::Result<ObjectMeta, Error>> + std::marker::Send: Iterator`