Comment 20 for bug 1983255

Tested 'samtools-legacy' with the help of a (no-change) rebuild 'libbio-samtools-perl-1.43-2build2.dsc' on focal that makes use of 'libbam-dev_0.1.19-4ubuntu0.1' (taken from proposed), which is the binary package of 'samtools-legacy'.
(Notice that 'libbio-samtools-perl' is the package tha is causing the zlib proposed migration regression.)

$ autopkgtest-build-lxd images:ubuntu/focal/s390x
Using http://squid.internal:3128 as container proxy
Creating autopkgtest-prepare-...
$

$ autopkgtest --no-built-binaries --apt-pocket=proposed --apt-upgrade --shell-fail --setup-commands="apt -y -q install software-properties-common; add-apt-repository -y 'deb http://us.ports.ubuntu.com/ubuntu-ports/ focal-proposed main universe'; apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 73E9E91F16C43C45C621AE3EDF0A28DEFAFEB468; add-apt-repository -y ppa:fheimes/libbio-samtools-perl; apt -y update; apt install -y libbam-dev=0.1.19-4ubuntu0.1; apt install -y libbio-samtools-perl=1.43-2build2" libbio-samtools-perl_1.43-2build2.dsc -- lxd autopkgtest/ubuntu/focal/s390x
...
All tests successful.
Files=1, Tests=4, 0 wallclock secs ( 0.02 usr 0.00 sys + 0.39 cusr 0.07 csys = 0.48 CPU)
Result: PASS
autopkgtest [15:43:37]: test autodep8-perl-recommends: -----------------------]
autopkgtest [15:43:38]: test autodep8-perl-recommends: - - - - - - - - - - results - - - - - - - - - -
autodep8-perl-recommends PASS (superficial)
autopkgtest [15:43:38]: @@@@@@@@@@@@@@@@@@@@ summary
autodep8-perl-build-deps PASS
autodep8-perl PASS (superficial)
autodep8-perl-recommends PASS (superficial)
$

Hence updating tags accordingly to verification-done-focal.