Updated legacy checkpoint wrapper to used pickle+gzip format

4 jobs for legacy in 17 minutes and 25 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build_linux_37 #241901
docker

00:14:37

84.0%
passed build_linux_38 #241902
docker

00:13:31

84.0%
passed build_macos_intel_37 #241899
macos intel

00:17:25

84.0%
passed build_macos_intel_38 #241900
macos intel

00:15:33

84.0%