Version 3.0.20200807132242-3 of cwltool is marked for autoremoval from testing on Mon 08 Feb 2021. It is affected by #978295. The removal of cwltool will also cause the removal of (transitive) reverse dependencies: igdiscover, pigx-rnaseq, qcumber, snakemake, toil. It depends (transitively) on python-schema-salad, affected by #978327. You should try to prevent the removal by fixing these RC bugs.