[MacPorts] #57980: Travis CI: Stop runner before timeout and print timeout message

[MacPorts]

#57980: Travis CI: Stop runner before timeout and print timeout message
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 Reporter:  l2dy            |      Owner:  l2dy
     Type:  enhancement     |     Status:  assigned
 Priority:  Normal          |  Milestone:
Component:  server/hosting  |    Version:
 Keywords:                  |       Port:
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Ticket URL: <https://trac.macports.org/ticket/57980>
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