pmbootstrap flasher boot now flashes the kernel instead of booting it?

I ran $ pmbootstrap flasher boot, which is supposed to boot the kernel. But it seems to have flashed it to a partition called "boot" instead:

$ pmb flasher boot
[18:37:44] (native) flash kernel postmarketos-stericsson
[18:37:44] (native) install android-tools
[18:37:46] FIXME: retrieved args where it shouldn't be needed!
< waiting for any device >
Sending 'boot' (10576 KB)                          OKAY [  2.346s]
Writing 'boot'                                     OKAY [  1.586s]
Finished. Total time: 4.728s
[18:42:11] You will get an IP automatically assigned to your USB interface shortly.
[18:42:11] Then you can connect to your device using ssh after pmOS has booted:
[18:42:11] ssh newbyte@172.16.42.1
[18:42:11] NOTE: If you enabled full disk encryption, you should make sure that Unl0kr has been properly configured for your device
[18:42:11] NOTE: chroot is still active (use 'pmbootstrap shutdown' as necessary)
[18:42:11] DONE!

And the log:

  File "/home/neboula/Code/pmbootstrap/pmbootstrap.py", line 12, in <module>
    sys.exit(pmb.main())
  File "/home/neboula/Code/pmbootstrap/pmb/__init__.py", line 98, in main
    run_command(args)
  File "/home/neboula/Code/pmbootstrap/pmb/commands/__init__.py", line 61, in run_command
    getattr(frontend, args.action)(args)
  File "/home/neboula/Code/pmbootstrap/pmb/helpers/frontend.py", line 405, in flasher
    pmb.flasher.frontend(args)
  File "/home/neboula/Code/pmbootstrap/pmb/flasher/frontend.py", line 156, in frontend
    kernel(deviceinfo, method)
  File "/home/neboula/Code/pmbootstrap/pmb/flasher/frontend.py", line 35, in kernel
    pmb.flasher.run(deviceinfo, method, "flash_kernel", flavor)
  File "/home/neboula/Code/pmbootstrap/pmb/flasher/run.py", line 46, in run
    args = pmb.helpers.args.please_i_really_need_args()
  File "/home/neboula/Code/pmbootstrap/pmb/helpers/args.py", line 140, in please_i_really_need_args
    traceback.print_stack(file=logging.logfd)
(068402) [18:37:46] FIXME: retrieved args where it shouldn't be needed!
(068402) [18:37:46] (native) % fastboot flash boot /mnt/rootfs_samsung-skomer/boot/boot.img
< waiting for any device >
Sending 'boot' (10576 KB)                          OKAY [  2.346s]
Writing 'boot'                                     OKAY [  1.586s]
Finished. Total time: 4.728s

This is with commit 2ce06e97