autopkgtest fails in hirsute on arm64 and armhf

Did not pass for a very long time.

https://autopkgtest.ubuntu.com/packages/t/trivial-features/hirsute/arm64

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-hirsute/hirsute/arm64/t/trivial-features/20210104_142349_cc3c8@/log.gz
...
Form: (MUTUALLY-EXCLUSIVE-P '(:PPC :PPC64 :X86 :X86-64 :ALPHA :MIPS))
Expected value: T
Actual value: NIL.
; NOTE: unhandled machine type, aarch64, in CPU.2 test.
 CPU.2 CPU.3 NIL.1 NIL.2
1 out of 10 total tests failed: CPU.1.autopkgtest [13:58:02]: test command1: -----------------------]
autopkgtest [13:58:03]: test command1: - - - - - - - - - - results - - - - - - - - - -
command1 FAIL non-zero exit status 1
...