std.Build: improve error for peak RSS exceeding declared value

As well as the exact byte count, include a human-readable value so it's
clearer what the error is actually telling you. The exact byte count
might not be worth keeping, but I decided I would in case it's useful in
any scenario.
d835a6ba9amlugg committed on 8/15/2025, 10:03:16 PMparentf758b97
1 file changedLine totals unavailable