The sources links were published without a hyperlink at: https://rustsec.org/advisories/RUSTSEC-2020-0071
This update is using explicit markdown hyperlinks in hopes that it will be rendered and published correctly.
This reverts commit a47cd63007.
The advisory was withdrawn based on discussions around whether read-only
environment variable access constitutes a vulnerability.
However, per the `time` crate's author @jhpratt, the crate also modifies
the environment and therefore the advisory should *not* be withdrawn:
https://github.com/rustsec/advisory-db/pull/1242#issuecomment-1144903688