T460: new sporadic failures with emacs 29

Subject: T460: new sporadic failures with emacs 29

Date: Thu, 24 Aug 2023 13:04:22 +0200

To: notmuch@notmuchmail.org

Cc:

From: Michael J Gruber


Hi there,

I'm sorry to report that I'm getting new sporadic (some archs
sometimes) failures on Fedora 39+ only, i.e. with emacs 29, on COPR.

```
T460-emacs-tree: Testing emacs tree view interface
 PASS   Basic notmuch-tree view in emacs
...
 PASS   Tree view of a single thread (from show)
 FAIL   Message window of tree view
--- T460-emacs-tree.14.notmuch-tree-show-window 2023-08-24
10:41:07.938464748 +0000
+++ T460-emacs-tree.14.OUTPUT 2023-08-24 10:41:07.938464748 +0000
@@ -1,41 +0,0 @@
-Lars Kellogg-Stedman <lars@seas.harvard.edu> (2009-11-17) (inbox signed)
...
-notmuch@notmuchmail.org
-http://notmuchmail.org/mailman/listinfo/notmuch
*ERROR*: Opening output file: Permission denied, /usr/bin/OUTPUT
 PASS   Stash id
```

That "/usr/bin/OUTPUT" looks strange and smells like a mis-expanded
variable. Why sporadically, though? The emacs test wait 0.1 before
writing - I dunno why, but those waits are fragile and make me nervous
about even keeping the tests for release builds.

I guess due to its load, COPR is prone to exposing timing issues.

Michael
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