Version 1.18.1+dfsg-1 of r-bioc-cner is marked for autoremoval from testing on Thu 15 Aug 2019. It depends (transitively) on r-bioc-biocparallel, affected by #914731. You should try to prevent the removal by fixing these RC bugs.
Last update: 2019-07-20
1 binary package has unsatisfiable dependencies
The dependencies of r-bioc-cner=1.18.1+dfsg-1 cannot be satisfied in unstable on
mips64el, ppc64el, mipsel, s390x, amd64, armel, i386, armhf, mips, and arm64
because: unsatisfied dependency on r-api-bioc-3.8