[Bug 1535234] Re: chown fails on root-owned files with "rw-build-tree"

[Didier Roche]

Started right now, let's see :) Thanks!

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https://bugs.launchpad.net/bugs/1535234

Title:
  chown fails on root-owned files with "rw-build-tree"

Status in autopkgtest package in Ubuntu:
  Fix Committed

Bug description:
  The ubuntu-make tests currently tmpfail on xenial due to this:

  adt-run [15:33:32]: test large: [-----------------------
  chown: changing ownership of ‘/tmp/adt-run.0gWOMN/build.oq7/ubuntu-make/tests/tools/__pycache__/local_server.cpython-34.pyc’:
  +Operation not permitted
  chown: changing ownership of ‘/tmp/adt-run.0gWOMN/build.oq7/ubuntu-make/tests/tools/__pycache__/__init__.cpython-34.pyc’:
  +Operation not permitted
  adt-run [15:33:32]: test large: -----------------------]
  sh: 1: cannot open /tmp/adt-run.0gWOMN/large-stdout: No such file
  Exit request sent.
  <VirtSubproc>: failure: copyup source failed, status 2
  adt-run [15:33:40]: ERROR: testbed failure: unexpected eof from the testbed

  This test has "Restrictions: rw-build-tree", but does not run as root,
  thus this code in run_tests() gets run:

          if self.user and 'rw-build-tree' in test.restrictions:
              script += 'chown -R %s "$buildtree"; ' % self.user

  this is bogus as chown as user will fail on any file which is not
  already owned by that user. Thus the test wrapper shell script fails
  before it even gets to starting "tee" for -stdout/-stderr and it fails
  in the above manner.

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