debian-packaging: how to use the crate in multi_threaded tokio runtime?

[sify21]

Qutting https://stackoverflow.com/questions/75079221/future-created-by-async-block-is-not-send

The tokio Runtime is usually multi-threaded, meaning that at any .await point your task could get moved from one thread to another. That's why everything that is held across an .await point must be Send.

I also intend to use in async_trait methods, which by default require Send.

However, many structs in debian-packaging are not Send. For example, I want to unpack data_tar_reader inside BinaryPackageEntry, which causes errors like this:

error: future cannot be sent between threads safely
..... some code here
    | |_____^ future created by async block is not `Send`
    |
    = help: the trait `std::marker::Send` is not implemented for `(dyn futures::AsyncRead + Unpin + 'static)`
note: future is not `Send` as this value is used across an await
241 |     while let Some(Ok(e)) = a.next_entry() {
    |                       - has type `BinaryPackageEntry` which is not `Send`
...
282 |                 data_tar_reader.into_inner().unpack(&dst).await?;
    |                                                           ^^^^^ await occurs here, with `e` maybe used later

[sify21]

Maybe this is related
dignifiedquire/async-tar#3

[indygreg]

This is an oversight on my part. PRs to add Send where appropriate will be accepted.