The advantage is that the extra error information is guaranteed to be printed
directly before the failure and we avoid one extra log line that would have to
be correlated with the failure.
The failure message from Gomega was hard to read because explanation and error
text were separated by the error dump. In many cases, that error dump doesn't
add any relevant information.
Now the error is dumped first as info message (just in case that it is
relevant) and then a shorter failure message is created from explanation and
error text.
