This is anita version 2.8
Using pexpect version 4.8.0
/usr/pkg/bin/anita \
    --workdir=/bracket/evbarm-aarch64/test/2021.04.25.13.33.27/anita \
    --structured-log-file=/bracket/evbarm-aarch64/test/2021.04.25.13.33.27/install.slog \
    --vmm-args= install \
    file:///bracket/evbarm-aarch64/test/2021.04.25.13.33.27/release/evbarm-aarch64/
Downloading file:///bracket/evbarm-aarch64/test/2021.04.25.13.33.27/release/evbarm-aarch64/binary/gzimg/arm64.img.gz... OK
Downloading file:///bracket/evbarm-aarch64/test/2021.04.25.13.33.27/release/evbarm-aarch64/binary/kernel/netbsd-GENERIC64.img.gz... OK
Creating hard disk image... done.
Decompressing image... 2172928+0 records in
2172928+0 records out
1112539136 bytes transferred in 29.829 secs (37297232 bytes/sec)
done.
QEMU emulator version 5.1.0
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
qemu path: /usr/pkg/bin/qemu-system-aarch64
qemu package: qemu-5.1.0nb9
glib2 package: glib2-2.64.1
reversing virtio devices
qemu-system-aarch64 \
    -m 512 \
    -drive file=/bracket/evbarm-aarch64/test/2021.04.25.13.33.27/anita/wd0.img,format=raw,media=disk,snapshot=off,if=none,id=hd0 \
    -device virtio-blk-device,drive=hd0 \
    -nographic \
    -M virt \
    -cpu cortex-a57 \
    -kernel /bracket/evbarm-aarch64/test/2021.04.25.13.33.27/anita/netbsd-GENERIC64.img \
    -append root=NAME=netbsd-root
child pid is 21363
[   1.0000000] NetBSD/evbarm (fdt) booting ...
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
[   1.0000000]     2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
[   1.0000000]     2018, 2019, 2020, 2021 The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[   1.0000000]     The Regents of the University of California.  All rights reserved.

[   1.0000000] NetBSD 9.99.82 (GENERIC64) #0: Sun Apr 25 17:06:13 UTC 2021
[   1.0000000]  root@lyta.NetBSD.org:/tmp/bracket/build/2021.04.25.13.33.27-evbarm-aarch64/obj/sys/arch/evbarm/compile/GENERIC64
[   1.0000000] total memory = 494 MB
[   1.0000000] avail memory = 476 MB
[   1.0000000] armfdt0 (root)
[   1.0000000] panic: kernel diagnostic assertion "ifattr || cfdriver_iattr_count(parent->dv_cfdriver) < 2" failed: file "/tmp/bracket/build/2021.04.25.13.33.27-evbarm-aarch64/src/sys/kern/subr_autoconf.c", line 1130 
[   1.0000000] cpu0: Begin traceback...
[   1.0000000] trace fp ffffc00000f73a50
[   1.0000000] fp ffffc00000f73a80 vpanic() at ffffc0000052ae8c netbsd:vpanic+0x14c
[   1.0000000] fp ffffc00000f73ae0 kern_assert() at ffffc00000786b88 netbsd:kern_assert+0x58
[   1.0000000] fp ffffc00000f73b70 config_vsearch() at ffffc0000050aeb0 netbsd:config_vsearch+0x370
[   1.0000000] fp ffffc00000f73c00 config_vfound() at ffffc0000050cb2c netbsd:config_vfound+0x48
[   1.0000000] fp ffffc00000f73c80 config_found() at ffffc0000050cc3c netbsd:config_found+0x3c
[   1.0000000] fp ffffc00000f73cf0 arm_fdt_attach() at ffffc00000068eb0 netbsd:arm_fdt_attach+0x90
[   1.0000000] fp ffffc00000f73d50 config_vattach() at ffffc0000050ca14 netbsd:config_vattach+0x1a4
[   1.0000000] fp ffffc00000f73dc0 config_attach() at ffffc0000050cc8c netbsd:config_attach+0x3c
[   1.0000000] fp ffffc00000f73e30 cpu_configure() at ffffc000000648cc netbsd:cpu_configure+0x4c
[   1.0000000] fp ffffc00000f73e60 main() at ffffc00000786e64 netbsd:main+0x2d4
[   1.0000000] fp 0000000000000000 aarch64_start() at ffffc0000000187c netbsd:aarch64_start+0x107c
[   1.0000000] cpu0: End traceback...
Stopped in pid 0.0 (system) at  netbsd:cpu_Debugger:    brk     #0xffff
db{0}> Traceback (most recent call last):
  File "/usr/pkg/bin/anita", line 157, in <module>
    status = main()
  File "/usr/pkg/bin/anita", line 130, in main
    a.install()
  File "/usr/pkg/lib/python3.7/site-packages/anita.py", line 2294, in install
    self._install()
  File "/usr/pkg/lib/python3.7/site-packages/anita.py", line 1446, in _install
    self._install_from_image()
  File "/usr/pkg/lib/python3.7/site-packages/anita.py", line 1474, in _install_from_image
    self.child.expect("login:")
  File "/usr/pkg/lib/python3.7/site-packages/anita.py", line 241, in expect
    r = pexpect.spawn.expect(self, pattern, *args, **kwargs)
  File "/usr/pkg/lib/python3.7/site-packages/pexpect/spawnbase.py", line 344, in expect
    timeout, searchwindowsize, async_)
  File "/usr/pkg/lib/python3.7/site-packages/pexpect/spawnbase.py", line 372, in expect_list
    return exp.expect_loop(timeout)
  File "/usr/pkg/lib/python3.7/site-packages/pexpect/expect.py", line 181, in expect_loop
    return self.timeout(e)
  File "/usr/pkg/lib/python3.7/site-packages/pexpect/expect.py", line 144, in timeout
    raise exc
pexpect.exceptions.TIMEOUT: Timeout exceeded.
<anita.pexpect_spawn_log object at 0x7a1554386220>
command: /usr/pkg/bin/qemu-system-aarch64
args: ['/usr/pkg/bin/qemu-system-aarch64', '-m', '512', '-drive', 'file=/bracket/evbarm-aarch64/test/2021.04.25.13.33.27/anita/wd0.img,format=raw,media=disk,snapshot=off,if=none,id=hd0', '-device', 'virtio-blk-device,drive=hd0', '-nographic', '-M', 'virt', '-cpu', 'cortex-a57', '-kernel', '/bracket/evbarm-aarch64/test/2021.04.25.13.33.27/anita/netbsd-GENERIC64.img', '-append', 'root=NAME=netbsd-root']
buffer (last 100 chars): b'End traceback...\r\r\nStopped in pid 0.0 (system) at  netbsd:cpu_Debugger:    brk     #0xffff\r\r\ndb{0}> '
before (last 100 chars): b'End traceback...\r\r\nStopped in pid 0.0 (system) at  netbsd:cpu_Debugger:    brk     #0xffff\r\r\ndb{0}> '
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 21363
child_fd: 9
closed: False
timeout: 3600
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: <anita.multifile object at 0x7a1554386560>
logfile_send: <anita.Logger object at 0x7a15543866a0>
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 30.0
delayafterterminate: 30.0
searcher: searcher_re:
    0: re.compile(b'login:')
     3677.32 real      3563.62 user        35.43 sys