Run of unchanged for cherrytree

Try this locally package):

debcheckout cherrytree
cd cherrytree
just-build
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
Processing triggers for dictionaries-common (1.28.4) ...

(Reading database ... 27035 files and directories currently installed.)
Removing autopkgtest-satdep (0) ...
autopkgtest [17:33:19]: test command1: cherrytree -h
autopkgtest [17:33:19]: test command1: [-----------------------
Unable to init server: Could not connect: Connection refused

(cherrytree:26749): Gtk-WARNING **: 17:33:19.731: cannot open display: 
autopkgtest [17:33:20]: test command1: -----------------------]
autopkgtest [17:33:20]: test command1:  - - - - - - - - - - results - - - - - - - - - -
command1             FAIL non-zero exit status 1
autopkgtest [17:33:20]: test command1:  - - - - - - - - - - stderr - - - - - - - - - -
Unable to init server: Could not connect: Connection refused

(cherrytree:26749): Gtk-WARNING **: 17:33:19.731: cannot open display: 

Full worker log Full build log