As mtr >= 0.67-1 doesn't show a Build-Depends on automaken (or automake*, FWIW) anymore, this bug rather seems to deal with mtr FTBFS on amd64, so it should possibly be retitled accordingly and will need to be upgraded to RC severity once amd64 hits the archives.
Just for the record, upstream links to source RPMs for x64_64 on his webpage, so these will most probably provide a way to allow building on amd64... HTH, Flo
signature.asc
Description: Digital signature