Currently `require()` throws an exception when the condition fails. The
problem with this is that the error is only printed at the end of the
test, with no trace in the logs on where exactly it happened, compared
to other logged events. This patchs also adds an error-level log line to
address this.
Signed-off-by: Botond Dénes <bdenes@scylladb.com>
Message-Id: <20210616065711.46224-1-bdenes@scylladb.com>
