invalid_instance_declarations.m:017: In instance declaration for `tc(((func) =
invalid_instance_declarations.m:017:   T), int)':
invalid_instance_declarations.m:017:   the first instance type `((func) = T)'
invalid_instance_declarations.m:017:   is a higher order type; it should be a
invalid_instance_declarations.m:017:   type constructor applied to zero or more
invalid_instance_declarations.m:017:   type variables.
invalid_instance_declarations.m:018: In instance declaration for `tc(t(int),
invalid_instance_declarations.m:018:   int)':
invalid_instance_declarations.m:018:   in the first instance type, one of the
invalid_instance_declarations.m:018:   arguments of the type constructor `t'/1
invalid_instance_declarations.m:018:   is not a type variable, but should be.
invalid_instance_declarations.m:018:   This is the first argument, `int'.
invalid_instance_declarations.m:019: In instance declaration for `tc(t(int),
invalid_instance_declarations.m:019:   t(int, string))':
invalid_instance_declarations.m:019:   in the first instance type, one of the
invalid_instance_declarations.m:019:   arguments of the type constructor `t'/1
invalid_instance_declarations.m:019:   is not a type variable, but should be.
invalid_instance_declarations.m:019:   This is the first argument, `int'.
invalid_instance_declarations.m:019: In instance declaration for `tc(t(int),
invalid_instance_declarations.m:019:   t(int, string))':
invalid_instance_declarations.m:019:   in the second instance type, some of the
invalid_instance_declarations.m:019:   arguments of the type constructor `t'/2
invalid_instance_declarations.m:019:   are not type variables, but should be.
invalid_instance_declarations.m:019:   These are the first argument, `int' and
invalid_instance_declarations.m:019:   the second argument, `string'.
For more information, recompile with `-E'.