component-trigger-used-as-action.dzn:16:7: error: cannot use provides
    in-event `hello' as action
component-trigger-used-as-action.dzn:10:3: info: port `p' defined here
component-trigger-used-as-action.dzn:3:3: info: event `hello' defined
    here
component-trigger-used-as-action.dzn:17:7: error: cannot use requires
    out-event `world' as action
component-trigger-used-as-action.dzn:11:3: info: port `r' defined here
component-trigger-used-as-action.dzn:4:3: info: event `world' defined
    here
