Error when running demo/main.cr

[thetrung]

run -s -p examples/demo/main.cr

Parse:                             00:00:00.000573948 (   0.50MB)
Semantic (top level):              00:00:00.197661655 (  58.77MB)
Semantic (new):                    00:00:00.001525845 (  58.77MB)
Semantic (type declarations):      00:00:00.019175681 (  58.77MB)
In /usr/local/Cellar/crystal/0.32.0/src/comparable.cr:83:16

 83 | abstract def <=>(other : T)
                   ^--
Error: abstract `def Comparable(T)#<=>(other : T)` must be implemented by Leafgem::Util::Vec2(T)

Also... see you in gitter.im then.