bug#34716: Guix test failure on i686: tests/processes

[Mark H Weaver]

The following build of the 'guix' package on i686-linux failed:

  https://hydra.gnu.org/build/3386822

due to a failure in the 'test/processes' test.  I've restarted the build
in the hope that the second attempt might succeed.

The Guix being built was guix-0.16.0-10.2637cfd, and it was built using
Guix from commit 7a0479bb7b8535acad2bf36c7a0b0498a1313422 on the master
branch, corresponding to evaluation 110430 on hydra.gnu.org.  The build
attempt was done on hydra.gnunet.org.

Here's the relevant excerpt from test-suite.log:

--8<---------------cut here---------------start------------->8---
FAIL: tests/processes
=====================

random seed for tests: 1551510910
substitute: warning: authentication and authorization of substitutes disabled!
substitute: guix substitute: warning: ACL for archive imports seems to be 
uninitialized, substitutes may be unavailable
building path(s) `/tmp/guix-tests/store/y9wwggfcz3wwgzqv194n7kw99zqffd77-foo'
test-name: not a client
location: 
/tmp/guix-build-guix-0.16.0-10.2637cfd.drv-0/source/tests/processes.scm:37
source:
+ (test-assert
+   "not a client"
+   (not (find (lambda (session)
+                (= (getpid)
+                   (process-id (daemon-session-client session))))
+              (daemon-sessions))))
actual-value: #f
actual-error:
+ (wrong-type-arg
+   "struct_vtable"
+   "Wrong type argument in position ~A (expecting ~A): ~S"
+   (1 "struct" #f)
+   (#f))
result: FAIL
--8<---------------cut here---------------end--------------->8---

I can provide the entire build log upon request.

        Mark