pbs: update connection failed error message

* Addresses #6531 on the 8.4.x branch. * Cylc 8 port of 7b6d8cb * Update the PBS job runner to reflect a change in error message. * The new pattern will also match the old format.
cylc · Feb 3, 2025 · 61afb9a · 61afb9a
1 parent 749b8ce
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diff --git a/changes.d/6586.fix.md b/changes.d/6586.fix.md
@@ -0,0 +1 @@
+PBS: Update connection failed error message.
diff --git a/cylc/flow/job_runner_handlers/pbs.py b/cylc/flow/job_runner_handlers/pbs.py
@@ -81,7 +81,7 @@ class PBSHandler:
     # N.B. The "qstat JOB_ID" command returns 1 if JOB_ID is no longer in the
     # system, so there is no need to filter its output.
     POLL_CMD = "qstat"
-    POLL_CANT_CONNECT_ERR = "Connection refused"
+    POLL_CANT_CONNECT_ERR = "cannot connect to server"
     REC_ID_FROM_SUBMIT_OUT = re.compile(r"^\s*(?P<id>\d+)", re.M)
     SUBMIT_CMD_TMPL = "qsub '%(job)s'"
     TIME_LIMIT_DIRECTIVE = "-l walltime"