Follow in better way the alientrimmer style

1 job for 0.4.1 in 5 minutes and 36 seconds (queued for 1 second)
Name Stage Failure
build_conda Build Conda
    try_download(m, no_download_source=False, raise_error=True)
File "/usr/local/lib/python3.8/site-packages/conda_build/", line 639, in try_download
File "/usr/local/lib/python3.8/site-packages/conda_build/", line 783, in provide
shutil.move(metadata.config.work_dir, metadata.config.work_dir + '_failed_provide')
File "/usr/local/lib/python3.8/", line 786, in move
raise Error("Destination path '%s' already exists" % real_dst)
shutil.Error: Destination path '/usr/local/conda-bld/alientrimmer_1600947028506/work_failed_provide/work' already exists
ERROR: Job failed: command terminated with exit code 1