runs root: runs
campaign_id=7c892fcdced6a808bf036564a350e1fd1fd2d47324abbadb5dcd39e02f13d1aa
executing campaign (1 cell, sweep over fast.length in [2,3])…
campaign ran OK. run#=0 cells=1
  cell 0: 1 stage-families
    stage 0 block std::sweep family_id=7c892fcd-0-GER40-w0-r0-s0-0 members=2