Operator precedences don't match:
infix 5 at testdata/language-features/basic-values/operator08.reject.lc:10:6:
x = (@&> () <@& ())
     ^^^
infixl 5 at testdata/language-features/basic-values/operator08.reject.lc:10:13:
x = (@&> () <@& ())
            ^^^