[tor-bugs] #30277 [Internal Services/Service - jenkins]: amd bionic tor builds fail with an apt-get dependency error

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#30277: amd bionic tor builds fail with an apt-get dependency error
-------------------------------------------------+-------------------------
     Reporter:  teor                             |      Owner:  weasel
         Type:  defect                           |     Status:  new
     Priority:  Medium                           |  Milestone:
    Component:  Internal Services/Service -      |    Version:
  jenkins                                        |
     Severity:  Normal                           |   Keywords:  tor-ci-fail
Actual Points:                                   |  Parent ID:
       Points:                                   |   Reviewer:
      Sponsor:                                   |
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 Most tor builds have failed with an error like this:

 {{{
 01:40:04 Install dose3 build dependencies (apt-based resolver)
 01:40:04 -----------------------------------------------------
 01:40:04
 01:40:04 Installing build dependencies
 01:40:04 Reading package lists...
 01:40:04 Building dependency tree...
 01:40:04 Reading state information...
 01:40:05 Some packages could not be installed. This may mean that you have
 01:40:05 requested an impossible situation or if you are using the
 unstable
 01:40:05 distribution that some required packages have not yet been
 created
 01:40:05 or been moved out of Incoming.
 01:40:05 The following information may help to resolve the situation:
 01:40:05
 01:40:05 The following packages have unmet dependencies:
 01:40:05  sbuild-build-depends-dose3-dummy : Depends: dose-distcheck but
 it is not installable
 01:40:05 E: Unable to correct problems, you have held broken packages.
 01:40:05 apt-get failed.
 01:40:05 E: Package installation failed
 01:40:05 Not removing build depends: cloned chroot in use
 01:40:06 E: Failed to explain bd-uninstallable
 }}}
 https://jenkins.torproject.org/job/tor-debian-0.3.4-nightly-
 binaries/ARCHITECTURE=amd64,SUITE=bionic/358/consoleFull#-16059184715da2eb1d-1267-4376-8b22-f5f143383dc7

 I don't know how to fix this issue.

 If it's not a trivial fix, please move this ticket into Core Tor/Tor, and
 someone should deal with it soon.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30277>
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