Comment 1:

FWIW, the documentation part was addressed by
https://code.google.com/p/go/source/detail?r=7e130e3f9a4f

Comment 2 by robryk:

Unfortunately, we can't stop a Ticker when it's GCed. A user can hold on to a copy of
the timer from the Ticker and allow the Ticker to be garbage collected. In that case, we
don't want to stop the Ticker. In fact, Tick does exactly that.
As far as I know, there is no way to notice when the channel itself is destroyed (I
don't mean a value of type chan, but the channel that backs it). Thus, I don't see any
way of noticing when a Ticker isn't used anymore.

Comment 3 by robryk:

s/a copy of the timer/a copy of the channel/

Comment 4 by awawfumin:

I see, there's indeed a lot of complications here. Nevertheless, I think the
documentation enhancement in https://code.google.com/p/go/source/detail?r=7e130e3f9a4f
looks good. Hopefully, it can be incorporated in http://golang.org/pkg/time/#Ticker soon.

Comment 6:

That doc sentence is already there on tip.golang.org.  It will move to golang.org when
1.3 is released.

Comment 7:

Status changed to Unfortunate.