eval {
	$pool->execute($cmd);
};

if ($@) { # an exception happend
	my $ex = $@;
	my $rootException = $ex->rootException();
	my $nofailed = $ex->getExecutions();
}

This method returns the exception which cause the execute to fail.

If the execution was started more then once (e.g. because of the MaxExecTry setting) this method returns the exception which occurred during the last attempt.

This method returns the number of executions done before the exception was propagated to the client.

This is usually 1 for ResourcePool::Command::NoFailoverExceptions or equal to MaxExecTry for other exceptions.