bison: fix random build failure

26 jobs for 1.0 in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Master.Python2

00:24:11

passed SlapOS.Eggs.UnitTest-Master.Python3

00:18:37

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:22:12

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:36

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:03:25

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:04:27

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:30

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:28

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:50

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:50

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:42

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:23

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:26

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:21

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:23

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:26

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:32

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:03:04

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:15

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:47

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:28

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:51

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:50

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:44

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:02:25

failed Wendelin.StandaloneDeploymentScriptTest-Debian.Buster.Master

00:04:08