update to rustc 1.2.0-nightly (c23a9d42e 2015-05-17) (built 2015-05-17)
update to rustc 1.2.0-nightly (c23a9d42e 2015-05-17) (built 2015-05-17)

gifnksm/SLSR,gifnksm/srither,gifnksm/SLSR,gifnksm/srither,gifnksm/srither,gifnksm/SLSR