[yocto] rocko build fails

[Mircea Gliga]

Hello,

I have a working krogoth build - I build images etc, everything is fine.
Then I wanted to try a rocko build, I installed the needed host 
packages: 
http://www.yoctoproject.org/docs/2.4/yocto-project-qs/yocto-project-qs.html#packages
Then sourced env and /bitbake core-image-minimal/.
So no extra layers involved, just poky.
I get errors like this:

ERROR: gnu-config-native-20150728+gitAUTOINC+b576fa87c1-r0 do_fetch: 
Build of do_fetch failed
ERROR: gnu-config-native-20150728+gitAUTOINC+b576fa87c1-r0 do_fetch: 
Traceback (most recent call last):
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/build.py", 
line 644, in exec_task
     return _exec_task(fn, task, d, quieterr)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/build.py", 
line 618, in _exec_task
     event.fire(TaskSucceeded(task, logfn, localdata), localdata)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/event.py", 
line 222, in fire
     fire_class_handlers(event, d)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/event.py", 
line 134, in fire_class_handlers
     execute_handler(name, handler, event, d)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/event.py", 
line 106, in execute_handler
     ret = handler(event)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 166, in run_buildstats
     write_task_data("passed", os.path.join(taskdir, e.task), e, d)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 90, in write_task_data
     cpu, iostats, resources, childres = get_process_cputime(os.getpid())
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 29, in get_process_cputime
     with open("/proc/%d/io" % pid, "r") as f:
PermissionError: [Errno 13] Permission denied: '/proc/1530/io'

ERROR: Task 
(virtual:native:/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/recipes-devtools/gnu-config/gnu-config_git.bb:do_fetch) 
failed with exit code '1'
ERROR: autoconf-native-2.69-r11 do_fetch: Execution of event handler 
'run_buildstats' failed
Traceback (most recent call last):
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 166, in run_buildstats(e=<bb.build.TaskSucceeded object at 
0x7f07f3f31898>):
          elif isinstance(e, bb.build.TaskSucceeded):
     >        write_task_data("passed", os.path.join(taskdir, e.task), e, d)
              if e.task == "do_rootfs":
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 90, in write_task_data(status='passed', 
logfile='/media/mircea/ExtLinux/Adventure/repository/rocko/build/tmp/buildstats/20171211074610/autoconf-native-2.69-r11/do_fetch', 
e=<bb.build.TaskSucceeded object at 0x7f07f3f31898>, 
d=<bb.data_smart.DataSmart object at 0x7f07f23de2b0>):
                  f.write(d.expand("Elapsed time: %0.2f seconds\n" % 
elapsedtime))
     >            cpu, iostats, resources, childres = 
get_process_cputime(os.getpid())
                  if cpu:
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 29, in get_process_cputime(pid=1543):
          if os.path.isfile("/proc/%d/io" % pid):
     >        with open("/proc/%d/io" % pid, "r") as f:
                  while True:
PermissionError: [Errno 13] Permission denied: '/proc/1543/io'

ERROR: autoconf-native-2.69-r11 do_fetch: Build of do_fetch failed
ERROR: autoconf-native-2.69-r11 do_fetch: Traceback (most recent call last):
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/build.py", 
line 644, in exec_task
     return _exec_task(fn, task, d, quieterr)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/build.py", 
line 618, in _exec_task
     event.fire(TaskSucceeded(task, logfn, localdata), localdata)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/event.py", 
line 222, in fire
     fire_class_handlers(event, d)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/event.py", 
line 134, in fire_class_handlers
     execute_handler(name, handler, event, d)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/bitbake/lib/bb/event.py", 
line 106, in execute_handler
     ret = handler(event)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 166, in run_buildstats
     write_task_data("passed", os.path.join(taskdir, e.task), e, d)
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 90, in write_task_data
     cpu, iostats, resources, childres = get_process_cputime(os.getpid())
   File 
"/media/mircea/ExtLinux/Adventure/repository/rocko/poky/meta/classes/buildstats.bbclass", 
line 29, in get_process_cputime
     with open("/proc/%d/io" % pid, "r") as f:
PermissionError: [Errno 13] Permission denied: '/proc/1543/io'

Any hints ?

Thanks

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