Java::ComHeadiusInvokebinder::InvalidTransformException (arguments matching arg.* are not all of the same type): org.jruby.dist/com.headius.invokebinder.Signature.collect(Signature.java:493) org.jruby.dist/com.headius.invokebinder.SmartBinder.collect(SmartBinder.java:851) org.jruby.dist/org.jruby.ir.targets.Bootstrap.buildMethodMissingHandle(Bootstrap.java:631) org.jruby.dist/org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:175) usr.local.bundle.gems.activerecord_minus_4_dot_2_dot_8.lib.active_record.connection_adapters.column.RUBY$method$type$0(activerecord (4.2.8) lib/active_record/connection_adapters/column.rb:18) usr.local.bundle.gems.activerecord_minus_4_dot_2_dot_8.lib.active_record.core.RUBY$block$inspect$0(activerecord (4.2.8) lib/active_record/core.rb:220)