rust-futures-task vulnerabilities (Ubuntu)

2 vulnerabilities.

• rust-futures-task Ubuntu futures_task::waker may cause a use-after-free if used on a type that isn't 'static CVE-2020-35906 Fix available 7.8 HighSeptember 4, 2020
• rust-futures-task Ubuntu futures_task::noop_waker_ref can segfault due to dereferencing a NULL pointer CVE-2020-35907 Fix available 5.5 MediumMay 3, 2020