2c std ownedfd

[diwic]

Remove our own OwnedFd since std has one now. Backwards incompatible change, and bumps rust version requirement to 1.63.

[diwic]

@ids1024 Hi, so was considering taking the plunge and replace our OwnedFd with std's. Here's what it would look like. Not sure why the (normal) CI fails though, do you have any idea? The rustc version should be new enough: https://github.com/actions/runner-images/blob/ubuntu22/20221212.1/images/linux/Ubuntu2204-Readme.md

    --> dbus/src/arg/basic_impl.rs:230:18
    |
230 |     use std::os::fd::OwnedFd;
    |                  ^^ private module

[ids1024]

You should import it from std::os::unix::io rather than std::os::fd. It's in std::os::fd now since it's available on WASI as well as Unix, but that change was done in a later Rust release than the one that added OwnedFd.

[diwic]

Replaced by #418