The 'proced-refine-test' test seems flaky to me, e.g.

"""
Test proced-refine-with-update-test condition:
    (ert-test-failed
     ((should (or pid-equal (when ... ... ...))) :form
      (or pid-equal
	  (if (string-match "PPID" proced-header-line) (progn ... ...)))
      :value nil))
   FAILED  4/7  proced-refine-with-update-test (0.215890 sec) at lisp/proced-tests.el:102
   passed  5/7  proced-revert-test (0.224430 sec)
   passed  6/7  proced-update-preserves-pid-at-point-test (0.251024 sec)
   passed  7/7  proced-update-test (0.234759 sec)

Ran 7 tests, 5 results as expected, 2 unexpected (2024-09-23 14:07:18+0100, 2.038374 sec)

2 unexpected results:
   FAILED  proced-refine-test  ((should (or pid-equal (when (string-match "PPID" proced-header-line) (proced--move-to-column "PPID") (string= pid (word-at-point))))) :form (or pid-equal (if (string-match "PPID" proced-header-line) (progn (proced--move-to-column "PPID") (string= pid (word-at-point))))) :value nil)
   FAILED  proced-refine-with-update-test  ((should (or pid-equal (when
   (string-match "PPID" proced-header-line) (proced--move-to-column
   "PPID") (string= pid (word-at-point))))) :form (or pid-equal (if
   (string-match "PPID" proced-header-line) (progn
   (proced--move-to-column "PPID") (string= pid (word-at-point)))))
   :value nil)
"""

On re-runs, sometimes just proced-refine-test fails. I've attached
proced-tests.log.