BUG: don't exit program if temp folder is not removed successfully
BUG: don't exit program if temp folder is not removed successfully

Former-commit-id: 9dafa0847d9b8593ee7b8d2a0078f80e3c9f0df0 [formerly 9f3678e7ac3b034f47c45c633dc0c250467755fb]
Former-commit-id: 3041f6f477e77b27aaa21a601db16d2cf1944fb6
Former-commit-id: ad7e72bbc8b55effe679e1b9e4113c1080a2468c
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox