Changes in PR not getting build on custom builders [closed]

edit

I have pushed a PR #16750 (https://github.com/opencv/opencv/pull...) where command is already added in description to build on custom builders.

Xforce_builders=Custom,Custom Win,Custom Mac
build_image:Custom=ubuntu-openvino-2020.1.0:16.04
build_image:Custom Win=openvino-2020.1.0
build_image:Custom Mac=openvino-2020.1.0

Xtest_modules:Custom=dnn,python2,python3,java
test_modules:Custom Win=dnn,python2,python3,java
test_modules:Custom Mac=dnn,python2,python3,java

buildworker:Custom=linux-1
# disabled due high memory usage: test_opencl:Custom=ON
test_opencl:Custom=OFF
test_bigdata:Custom=1
test_filter:Custom=*

I has already build on all builders other than custom ones. What should i do to build on custom builders ?