Fix version logic when there are only pre-releases #2971
Merged
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It looks like fixing the bug in #2894 exposed this bug. When there are
only pre-release versions of a crate, the version number needs to be
extracted so that the version object can be located again a few lines
later. This could probably be refactored, but for now this removes the
spurious error notification shown in the UI.
r? @Turbo87