Provide some information on why upload fails

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Run tests (caliper 1.0-beta-1)
2. ...
3. Get "Some trials failed to upload. Consider uploading them manually." error

Not sure why, but uploads started failing. Could be an intermittent 
connectivity problem.
The issue I have is two-fold:

(a) Error message does not indicated what is the root problem (I see that 
Exception is passed to logger -- why it swallows it I don't know). It should, 
to give an idea of what exactly happened
(b) Results should be stored locally; and path should be printed to let user 
find them (perhaps these are already saved?)

Original issue reported on code.google.com by tsaloranta@gmail.com on 19 May 2013 at 4:38

[GoogleCodeExporter]

Looks like results do get stored in defined directory (by default, at 
$HOME/.caliper).
So maybe just mention this in error message.

Original comment by tsaloranta@gmail.com on 19 May 2013 at 6:56

[GoogleCodeExporter]

Agreed.

Original comment by gak@google.com on 20 May 2013 at 6:05

• Changed title: Provide some information on why upload fails
• Changed state: Accepted
• Added labels: Milestone-1.0