[Bug 1890341] Re: Intermittent autopkgtest failure with testStdinPipe (s390x)

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** Tags added: patch

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Title:
  Intermittent autopkgtest failure with testStdinPipe (s390x)

Status in phpMyAdmin sql-parser:
  New
Status in phpmyadmin-sql-parser package in Ubuntu:
  New

Bug description:
  On s390x (only), the unit test suite appears to fail intermittently on
  a test case that invokes the php cli binary.  This test case executes
  the binary six times, which sometimes passes, and sometimes fails with
  error code 1.  It appears that re-triggering the test several times
  eventually results in it (randomly?) passing, but it passes only about
  10-20% of the time.

  Upstream:  https://github.com/phpmyadmin/sql-parser/issues/309

  
  Below is one of the test runs, where all 6 attempts failed:

  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac
  /autopkgtest-groovy/groovy/s390x/p/phpmyadmin-sql-
  parser/20200804_040216_41a8c@/log.gz

  There were 6 failures:

  1) PhpMyAdmin\SqlParser\Tests\Utils\CLITest::testStdinPipe with data set #0 ('echo "SELECT 1" | /usr/bin/ph...-query', 0)
  Failed asserting that 1 is identical to 0.

  /tmp/autopkgtest.BXMsD1/build.Bwe/src/tests/Utils/CLITest.php:431

  2) PhpMyAdmin\SqlParser\Tests\Utils\CLITest::testStdinPipe with data set #1 ('echo "invalid query" | /usr/b...-query', 0)
  Failed asserting that 1 is identical to 0.

  /tmp/autopkgtest.BXMsD1/build.Bwe/src/tests/Utils/CLITest.php:431

  3) PhpMyAdmin\SqlParser\Tests\Utils\CLITest::testStdinPipe with data set #2 ('echo "SELECT 1" | /usr/bin/ph...-query', 0)
  Failed asserting that 1 is identical to 0.

  /tmp/autopkgtest.BXMsD1/build.Bwe/src/tests/Utils/CLITest.php:431

  4) PhpMyAdmin\SqlParser\Tests\Utils\CLITest::testStdinPipe with data set #3 ('echo "invalid query" | /usr/b...-query', 10)
  Failed asserting that 1 is identical to 10.

  /tmp/autopkgtest.BXMsD1/build.Bwe/src/tests/Utils/CLITest.php:431

  5) PhpMyAdmin\SqlParser\Tests\Utils\CLITest::testStdinPipe with data set #4 ('echo "SELECT 1" | /usr/bin/ph...-query', 0)
  Failed asserting that 1 is identical to 0.

  /tmp/autopkgtest.BXMsD1/build.Bwe/src/tests/Utils/CLITest.php:431

  6) PhpMyAdmin\SqlParser\Tests\Utils\CLITest::testStdinPipe with data set #5 ('echo "invalid query" | /usr/b...-query', 0)
  Failed asserting that 1 is identical to 0.

  /tmp/autopkgtest.BXMsD1/build.Bwe/src/tests/Utils/CLITest.php:431

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