Version 1.4.1-1 of buildstream is marked for autoremoval from testing on Sat 18 Jul 2020. It is affected by #962197, #962205. The removal of buildstream will also cause the removal of (transitive) reverse dependency: bst-external. It depends (transitively) on grpc, affected by #959675, #961193, #963583. You should try to prevent the removal by fixing these RC bugs.