Version 3.12.0+dfsg-1 of r-bioc-mutationalpatterns is marked for autoremoval from testing on Sat 08 Jun 2024. It is affected by #1070842. It depends (transitively) on r-bioc-iranges, r-bioc-s4vectors, affected by #1070841, #1070843. You should try to prevent the removal by fixing these RC bugs.