tests/test-push-validation.t

chg: downgrade "failed to read channel" from abortmsg to debugmsg

If the server has an uncaught exception, it will exit without being able to
write the channel information. In this case, the client is likely to complain
about "failed to read channel", which looks inconsistent with original hg.
This patch silences the error message and makes uncaught exception behavior
more like original hg. It will help chg to pass test-fileset.t.

  $ hg init test
  $ cd test

  $ cat > .hg/hgrc <<EOF
  > [server]
  > validate=1
  > EOF

  $ echo alpha > alpha
  $ echo beta > beta
  $ hg addr
  adding alpha
  adding beta
  $ hg ci -m 1

  $ cd ..
  $ hg clone test test-clone
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

Test spurious filelog entries:

  $ cd test-clone
  $ echo blah >> beta
  $ cp .hg/store/data/beta.i tmp1
  $ hg ci -m 2
  $ cp .hg/store/data/beta.i tmp2
  $ hg -q rollback
  $ mv tmp2 .hg/store/data/beta.i
  $ echo blah >> beta
  $ hg ci -m '2 (corrupt)'

Expected to fail:

  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
   beta@1: dddc47b3ba30 not in manifests
  2 files, 2 changesets, 4 total revisions
  1 integrity errors encountered!
  (first damaged changeset appears to be 1)
  [1]

  $ hg push
  pushing to $TESTTMP/test (glob)
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  transaction abort!
  rollback completed
  abort: received spurious file revlog entry
  [255]

  $ hg -q rollback
  $ mv tmp1 .hg/store/data/beta.i
  $ echo beta > beta

Test missing filelog entries:

  $ cp .hg/store/data/beta.i tmp
  $ echo blah >> beta
  $ hg ci -m '2 (corrupt)'
  $ mv tmp .hg/store/data/beta.i

Expected to fail:

  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
   beta@1: manifest refers to unknown revision dddc47b3ba30
  2 files, 2 changesets, 2 total revisions
  1 integrity errors encountered!
  (first damaged changeset appears to be 1)
  [1]

  $ hg push
  pushing to $TESTTMP/test (glob)
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  transaction abort!
  rollback completed
  abort: missing file data for beta:dddc47b3ba30e54484720ce0f4f768a0f4b6efb9 - run hg verify
  [255]

  $ cd ..