I can't confirm this for my MacBook:


20:39 ~ $ time python3 -E -Wd -m test -r -w -uall test_zlib
Using random seed 1960084
[1/1] test_zlib
1 test OK.
[91618 refs]

real	4m1.051s
user	0m15.031s
sys	0m26.908s

...

20:40 ~ $ ll tmp/test_python_6778/
4194308 -rw-r-----  1 steffen  staff  4294967300  6 Apr 20:40 @test_6778_tmp

...

Processes: 63 total, 2 running, 3 stuck, 58 sleeping, 246 threads                20:40:30
Load Avg: 0.59, 0.65, 0.56  CPU usage: 6.79% user, 13.10% sys, 80.9% idle
SharedLibs: 8260K resident, 9972K data, 0B linkedit.
MemRegions: 6043 total, 218M resident, 13M private, 185M shared.
PhysMem: 446M wired, 328M active, 138M inactive, 912M used, 1135M free.
VM: 143G vsize, 1042M framework vsize, 29610(0) pageins, 0(0) pageouts.
Networks: packets: 807/440K in, 933/129K out. Disks: 13881/581M read, 26057/16G written.

PID   COMMAND      %CPU TIME     #TH  #WQ  #PORT #MRE RPRVT  RSHRD  RSIZE  VPRVT  VSIZE
6778  python3      4.5  00:00.94 2    0    37    139  13M    320K   15M    38M    2403M

...

Processes: 63 total, 3 running, 60 sleeping, 253 threads                         20:41:30
Load Avg: 0.54, 0.62, 0.55  CPU usage: 12.98% user, 14.90% sys, 72.11% idle
SharedLibs: 8260K resident, 9972K data, 0B linkedit.
MemRegions: 6062 total, 269M resident, 13M private, 274M shared.
PhysMem: 443M wired, 329M active, 184M inactive, 955M used, 1091M free.
VM: 147G vsize, 1042M framework vsize, 41530(11520) pageins, 0(0) pageouts.
Networks: packets: 807/440K in, 933/129K out. Disks: 13950/627M read, 29598/19G written.

PID   COMMAND      %CPU TIME     #TH  #WQ  #PORT #MRE RPRVT  RSHRD  RSIZE  VPRVT  VSIZE
6778  python3      11.6 00:03.74 2    0    37    140  60M+   320K   62M+   4134M  6499M

...

20:43 ~ $ ll tmp/test_python_6778/
4194308 -rw-r-----  1 steffen  staff  4294967300  6 Apr 20:40 @test_6778_tmp


As i've stated for #11779, maybe these random errors of the bot
are caused by some strange hardware based error?