check(30, "AssociativeAlgebras") segfaulting on armhf

From a PPA build of the development branch in Ubuntu 21.04 on armhf:

-- running   check(30, "AssociativeAlgebras")                              
 ulimit -c unlimited; ulimit -t 700; ulimit -m 850000; ulimit -s 8192; ulimit -n 512;  cd /tmp/M2-17198-0/39-rundir/; GC_MAXIMUM_HEAP_SIZE=400M "/<<BUILDDIR>>/macaulay2-1.17.2.1+git202101300204/M2/usr-dist/arm-Linux-Ubuntu-21.04/bin/M2-binary" -q --int --no-randomize --no-readline --silent --stop --print-width 129 -e 'needsPackage("AssociativeAlgebras",Reload=>true,FileName=>"/<<BUILDDIR>>/macaulay2-1.17.2.1+git202101300204/M2/Macaulay2/packages/AssociativeAlgebras.m2")' <"/tmp/M2-17198-0/38.m2" >>"/tmp/M2-17198-0/38.tmp" 2>&1
/tmp/M2-17198-0/38.tmp:0:1: (output file) error: Macaulay2 exited with status code 1
/tmp/M2-17198-0/38.m2:0:1: (input file)
M2: *** Error 1
 -- 1.68003 seconds elapsed
 -- running   check(31, "AssociativeAlgebras")                               -- 1.05338 seconds elapsed
 -- running   check(32, "AssociativeAlgebras")                               -- 3.35071 seconds elapsed
 -- running   check(33, "AssociativeAlgebras")                               -- 1.01143 seconds elapsed
AssociativeAlgebras/tests.m2:1073:1: error:
 -- o23 : RingMap S <--- kk <|z , z , z , y , y , y |>
 --                            1   2   3   1   2   3
 -- 
 -- i24 : assert(alpha(preim) == alpha(z_1^2*z_2^3*z_3))
 -- -- SIGSEGV
 -- -* stack trace, pid: 17507
 --  0# stack_trace(std::ostream&, bool) at ./M2/Macaulay2/d/main.cpp:124
 --  1# segv_handler at ./M2/Macaulay2/d/main.cpp:240
 --  2# 0xF69881B0 in /lib/arm-linux-gnueabihf/libc.so.6
 -- -- end stack trace *-
 -- 
../m2/debugging.m2:20:6:(1):[9]: error: test(s) #30 of package AssociativeAlgebras failed.
../m2/testing.m2:97:9:(1):[8]: --back trace--

Start with AssociativeAlgebras/tests.m2 at line 1073 and reproduce check(30, "AssociativeAlgebras") on armhf using the reported development-branch build. Read the nearby test setup and the referenced debugging.m2 and testing.m2 helpers; done means the assertion no longer segfaults and the package test completes successfully on the affected architecture.