Currently there isn't a rush anyone can pull off that is impossible to beat. What rushes are you struggling with? What's your normal build you do?Recently with warthogs if you can survive the rush you are very damage or without bases and resources to make something before the rush
Hate to break it to you, but an army of warthogs at 7-8 minutes is not a rush. That is just a total lack of scouting, early game pressure, and resource management on your end.
Looking at the match specifically, your opponent didn't even hit "peak warthogs" until 9 minutes. Both your populations were rising about equally the whole time. At about 9 minutes there was a large engagement that you you came out on the bottom of and couldn't recover. That is not a "rush" and is in no way broken or unbeatable, the problem was a lack of scouting resulting in your equal sized population losing to his wathogs. If you population was more AV and air the result would likely have been entirely reversed. Also guessing the Forge player had a really good scatterbomb due to the extremely rapid drop in population. As expected right at this ~9min engagement Forge used 2 leader powers.
EDIT2: Not to mention the gales, wolves, and snipers mixed with the hogs, which would destroy your comp that was almost exclusively hunters/engineers.