PowerSeriesRing(QQ, 10) crashes SAGE:

Traceback (most recent call last):
PowerSeriesRing(QQ, 10)
File "/home/server/", line 1, in ?

File "/sage/local/lib/python2.4/site-packages/sage/rings/power_series_ring.py",
line 44, in PowerSeriesRing
R = PowerSeriesRing_over_field(base_ring, name, default_prec)
File "/sage/local/lib/python2.4/site-packages/sage/rings/power_series_ring.py",
line 171, in __init__
PowerSeriesRing_generic.init(self, base_ring, name, default_prec)
File "/sage/local/lib/python2.4/site-packages/sage/rings/power_series_ring.py",
line 63, in __init__
self.__generator = self.__power_series_class(self, [0,1], check=True,
is_gen=True)
File
"/sage/local/lib/python2.4/site-packages/sage/rings/power_series_ring_element.py",
line 506, in __init__
f = R(f, check=check)
File "/sage/local/lib/python2.4/site-packages/sage/rings/multi_polynomial_ring.py",
line 481, in __call__
c = self.base_ring()(x)
File "/sage/local/lib/python2.4/site-packages/sage/rings/rational_field.py", line
155, in __call__
return sage.rings.rational.Rational(x, base)
File "rational.pyx", line 105, in rational.Rational.init
File "rational.pyx", line 183, in rational.Rational.__set_value
TypeError: Unable to coerce [0, 1] (<type 'list'>) to Rational

Component: basic arithmetic

Issue created by migration from https://trac.sagemath.org/ticket/6