nuco@server:~/frappe-bench$ bench update --upgrade
Already up-to-date.
From https://github.com/frappe/frappe
 * branch            develop    -> FETCH_HEAD
Already up-to-date.
From https://github.com/frappe/shopping-cart
 * branch            master     -> FETCH_HEAD
Already up-to-date.
From https://github.com/frappe/erpnext
 * branch            develop    -> FETCH_HEAD
Already up-to-date.
database backup taken - ./erpnext/private/backups/20150320_13894194_database.sql.gz - on 2015-03-20 09:44:15.128491
Migrating erpnext
Executing frappe.patches.v5_0.rename_ref_type_fieldnames in erpnext (erpnext)
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/home/nuco/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 77, in <module>
    main()
  File "/home/nuco/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 14, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 610, in __call__
    return self.main(*args, **kwargs)
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 590, in main
    rv = self.invoke(ctx)
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 936, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 936, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 782, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 416, in invoke
    return callback(*args, **kwargs)
  File "/home/nuco/frappe-bench/apps/frappe/frappe/commands.py", line 28, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/nuco/frappe-bench/apps/frappe/frappe/commands.py", line 203, in migrate
    frappe.modules.patch_handler.run_all()
  File "/home/nuco/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 25, in run_all
    if not run_single(patchmodule = patch):
  File "/home/nuco/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 52, in run_single
    return execute_patch(patchmodule, method, methodargs)
  File "/home/nuco/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 68, in execute_patch
    frappe.get_attr(patchmodule.split()[0] + ".execute")()
  File "/home/nuco/frappe-bench/apps/frappe/frappe/patches/v5_0/rename_ref_type_fieldnames.py", line 9, in execute
    frappe.db.sql("alter table `tabBulk Email` change `ref_docname` `reference_name` varchar(255)")
  File "/home/nuco/frappe-bench/apps/frappe/frappe/database.py", line 140, in sql
    self._cursor.execute(query)
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/cursors.py", line 205, in execute
    self.errorhandler(self, exc, value)
  File "/home/nuco/frappe-bench/env/local/lib/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
_mysql_exceptions.OperationalError: (1060, "Duplicate column name 'reference_name'")
Traceback (most recent call last):
  File "/usr/local/bin/bench", line 9, in <module>
    load_entry_point('bench==0.1', 'console_scripts', 'bench')()
  File "/home/nuco/bench-repo/bench/cli.py", line 55, in cli
    bench()
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 610, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 590, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 936, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 782, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 416, in invoke
    return callback(*args, **kwargs)
  File "/home/nuco/bench-repo/bench/cli.py", line 244, in update
    patch_sites()
  File "/home/nuco/bench-repo/bench/utils.py", line 117, in patch_sites
    run_frappe_cmd('--site', 'all', 'migrate', bench=bench)
  File "/home/nuco/bench-repo/bench/utils.py", line 422, in run_frappe_cmd
    subprocess.check_call((f, '-m', 'frappe.utils.bench_helper', 'frappe') + args, cwd=sites_dir)
  File "/usr/lib/python2.7/subprocess.py", line 511, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '('/home/nuco/frappe-bench/env/bin/python', '-m', 'frappe.utils.bench_helper', 'frappe', '--site', 'all', 'migrate')' returned non-zero exit status 255
nuco@server:~/frappe-bench$