Function version_check::is_max_version [−][src]
Expand description
Checks that the running or installed rustc
is at most some maximum
version.
The format of max_version
is a semantic version: 1.3.0
, 1.15.0-beta
,
1.14.0
, 1.16.0-nightly
, etc.
If the version cannot be retrieved or parsed, or if max_version
could not
be parsed, returns None
. Otherwise returns true
if the installed rustc
is at most max_version
and false
otherwise.