When using the simple-queue plugin, the hover text shown when hovering the mouse over a job in the build-queue, no longer shows how long a job has been waiting.

Steps to reproduce
1. Hover mouse over job in job-queue. Notice hover text.

Expected
Hover text shows
"Waiting for next available executor on [node or label name]
Waiting for [wait time] minutes"

Observed
Hover text shows
"Waiting for next available executor on [node or label name]
Waiting for"

Thanks for a really helpful plugin