File paths in custom error parsing

I'm using QTCreator on windows with a custom build steps, when building starts in linux system over ssh. I use custom output paser to get errors in issues window.

When I get errors, like that

 /home/user/my_project/main.cpp:10:5: error: expected ; before } token

I tried use custom parser, like that

 /home/user/my_project/(.*):(\d+):(\d+): error: (.*)

 But in Windows this file have path for example:

 C:/build/my_project/main.cpp

 After that I can see error in issues, but path also \home\user\my_project\main.cpp and Show in Editor not work.

Small update:

Build directory and working directory in custom build step set

  C:/build/my_project

Add some screenshots of my settings.

1-3 build without custom parser

4-6 build with custom parser

7 parser settings