[tor-relays] new warning with Tor 0.3.4.0-alpha-dev (git-efc105716283bbdf)

[teor]

> On 28 Feb 2018, at 04:18, Toralf Förster <toralf.foerster at gmx.de> wrote:
> 
> so I'm convinved that this output today :
> 
> date -u
> Tue Feb 27 14:59:00 UTC 2018
> 
> cat </dev/tcp/time.nist.gov/13
> 
> ntpdate -q 2.de.pool.ntp.org
> server 2a01:4f8:110:30e1::9, stratum 2, offset 0.001730, delay 0.02591
> …
> 27 Feb 15:59:10 ntpdate[3213]: adjust time server 2a01:4f8:110:30e1::9 offset 0.001730 sec
> 
> Feb 27 15:59:00.000 [warn] Our clock is 1 minutes, 1 seconds behind the time published in the consensus network status document (2018-02-27 15:00:00 UTC).  Tor needs an accurate clock to work correctly. Please check your time and date settings!
> Feb 27 15:59:00.000 [warn] Received microdesc flavor consensus with skewed time (CONSENSUS): It seems that our clock is behind by 1 minutes, 1 seconds, or that theirs is ahead. Tor requires an accurate clock to work: please check your time, timezone, and date settings.
> 
> indicates that the remote side is wrong.

The message is accurate, although it might be 1 second off:
"It seems that our clock is behind by 1 minutes, 1 seconds, or that theirs is ahead"

It is possible that an authority is ahead by 1 minute + download time.
Or that there is a bug in the relevant Tor code. 

Here are the questions I'd like to answer before opening a ticket:

Which authority did your Tor fetch the consensus from?
Is that authority's clock wrong?

Does this error happen often on your relay?

T