Test 53 "run tests which consume stdin" fails randomly

[gioele]

Describe the bug

Test 53 "run tests which consume stdin" is flaky and fails (seemingly) at random.

To Reproduce

This bug seems to be time-dependent and non deterministic. You can see an example failure at https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/bats.html (archived page)

Log

not ok 53 run tests which consume stdin (see #197)
# (in test file test/bats.bats, line 507)
#   `[ "$status" -eq 0 ]' failed

Expected behavior

The test should always pass.

Environment (please complete the following information):

• Bats Version: 1.10.0
• OS: Linux Debian unstable
• Bash version: 5.2.2(1)

Additional context

Another flaky test has been reported in #685, but it seems unrelated to this specific issue.