[metrics-bugs] #22800 [Metrics/metrics-lib]: Upgrade libraries to new Debian stable

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#22800: Upgrade libraries to new Debian stable
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     Reporter:  karsten              |      Owner:  metrics-team
         Type:  enhancement          |     Status:  new
     Priority:  High                 |  Milestone:
    Component:  Metrics/metrics-lib  |    Version:
     Severity:  Normal               |   Keywords:
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 The new Debian stable is out, and we should upgrade our library versions
 to use what's contained in there.

 Note that it might still take a while until hosts will be running Debian
 stable. But we only depend on Java 7 (soon 8) there. If we build locally
 with newer library versions, it shouldn't matter whether hosts are running
 jessie or stretch.

 Putting this on high priority, because our Jenkins metrics-lib builds are
 currently failing, because they're running stretch, not jessie. We could
 temporarily disable them, but we could as well to this upgrade now.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22800>
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