Ich, einfach anders

That’s just brilliant.

To be fair, these alternatives are also limited to the case where the item type stays the same.

map() can still be used with Vec::iter_mut(), filter_map() can be replaced with Vec::retain_mut().

I think the better solution would be to use Vec::retain().

Tl;dr: std::process::Command is vulnerable to shell injection if you invoke cmd.exe or *.{cmd,bat} on Windows.