libudev support was added in 0.7.y and ever since, whenever udev is
unavailable or something is wrong with it, pools take 30 seconds to
import, which is extremely annoying to system administrators. There is
no obvious sign of the problem, making it even more annoying. Let's
report this condition to system administrators going forward.
Reported-by: Mason Loring Bliss <mason@blisses.org>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
adc3425e39