pylint #119818 Variable usage scope fails to detect usage in List building. [open]

Following code example: 
for key, _ in some_dict:
    some_list = [key]
is reported as "unused variable 'key'".

pylint --version output: 
pylint 0.26.0, 
astng 0.24.1, common 0.59.0
Python 2.7.2+ (default, Jul 20 2012, 22:15:08) 
[GCC 4.6.1]
prioritynormal
typebug
done in<not specified>
closed by<not specified>