Bug#1051519: rust-async-task: autopkgtest failures

[Jeremy Bícha]

Source: rust-async-task
Version: 4.4.0-2
Severity: serious

rust-async-task is unable to migrate to Testing because its
autopkgtests are failing.

https://qa.debian.org/excuses.php?package=rust-async-task

Thank you,
Jeremy Bícha