minor error message update (#3)

Fixes an issue where the error message returned when a function exceeds its timeout includes an illegal character.

Author: tenczar

pkg/funky/errors.go

@@ -19,7 +19,7 @@ func (e IllegalArgumentError) Error() string {
 type TimeoutError string
 
 func (e TimeoutError) Error() string {
-	return fmt.Sprintf("The invocation exceeded the timeout: %s", string(e))
+	return string(e)
 }
 
 // FunctionServerError a generic error indicating that the function server experienced an error

pkg/funky/server.go

@@ -116,7 +116,7 @@ func (s *DefaultServer) Invoke(input *Message) (interface{}, error) {
 
 	if err != nil {
 		if isTimeout(err) {
-			return nil, TimeoutError(timeout)
+			return nil, TimeoutError("Function execution exceeded the timeout")
 		} else if isConnectionRefused(err) {
 			return nil, ConnectionRefusedError(url)
 		} else {