cubicweb #320298 db-rebuild-fti crashes [rejected]

trace:

Traceback (most recent call last):
 File "/usr/bin/cubicweb-ctl", line 4, in <module>
   run(sys.argv[1:])
 File "/home/auc/rep/cubicweb/cubicweb/cwctl.py", line 805, in run
   main_run(args, __doc__)
 File "/home/auc/rep/cubicweb/cubicweb/toolsutils.py", line 255, in main_run
   base_main_run(args, doc)
 File "/home/auc/rep/public/logilab/common/clcommands.py", line 136, in main_run
   cmd_run(arg, *args)
 File "/home/auc/rep/public/logilab/common/clcommands.py", line 119, in cmd_run
   command.run(args)
 File "/home/auc/rep/cubicweb/cubicweb/server/serverctl.py", line 706, in run
   repo, cnx = repo_cnx(config)
 File "/home/auc/rep/cubicweb/cubicweb/server/serverctl.py", line 138, in repo_cnx
   return in_memory_cnx(config, login, pwd)
 File "/home/auc/rep/cubicweb/cubicweb/dbapi.py", line 121, in in_memory_cnx
   repo = get_repository('inmemory', config=config, vreg=vreg)
 File "/home/auc/rep/cubicweb/cubicweb/dbapi.py", line 43, in get_repository
   return Repository(config, vreg=vreg)
 File "/home/auc/rep/cubicweb/cubicweb/server/repository.py", line 176, in __init__
   self.fill_schema()
 File "/home/auc/rep/cubicweb/cubicweb/server/repository.py", line 274, in fill_schema
   self.config.init_cubes(self.get_cubes())
 File "/home/auc/rep/cubicweb/cubicweb/cwconfig.py", line 673, in init_cubes
   assert self._cubes is None
priorityimportant
typebug
done in3.3.0
load0.200
load left0.000
closed by<not specified>