Ruleguard doesn't work on go 1.18

[bmhatfield]

I'm receiving errors like:

package "sort" without types was imported from "net".

This appears to be a resolved issue in newer versions of golang.org/x/tools: see this issue comment for more.

[quasilyte]

Could you check it again and confirm whether #381 fixes the problem?

[bmhatfield]

Oh! I'm so sorry - you closed this almost right away and I did not notice. Yes! Confirmed that ruleguard works on 1.18 for me as of 7750682a489adc9ed7c739b87a8324315bb7b930. Thank you!