osmux reference pdf has auto-generated plot not displayed in pdf
Document available in https://ftp.osmocom.org/docs/latest/osmux-reference.pdf
It seems it's missing the plot/chart in section 4.3 "Trunking and Batching".
I'm sure it used to work at some point (I did it).
First: check if building locally generates the chart correctly
Second: check why generated pdf from jenkins doesn't include the chart (most probably missing dependency on program used to generate it).