CtSaving: check and clear frame containers before every acquisition

3 jobs for v1.9.9rc1 in 58 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
canceled #187771
linux
build-linux

00:00:56

canceled #187772
win
build-win

00:00:58

 
  Deploy
canceled #187773
linux conda
deploy-stable