Fix intermittent nil dereference error

[deepthi]

Don't use err.Error() because it is possible for err to be nil.

Signed-off-by: deepthi deepthi@planetscale.com

[sougou]

If this is what made it flaky, we should make it non-flaky. If not, it can stay the way it is.

[deepthi]

If this is what made it flaky, we should make it non-flaky. If not, it can stay the way it is.

I can't tell from the history whether this is the error we were getting earlier.
We could make it non-flaky and see if it starts failing with a different error. WDYT?

[sougou]

Try running it 10 times in a row, bonus points if you can overload your box while doing this. If it consistently passes, we can make it non-flaky.

[deepthi]

Try running it 10 times in a row, bonus points if you can overload your box while doing this. If it consistently passes, we can make it non-flaky.

It passes the stress test on my local, so I have made it non-flaky.