1.This window batch script(rebuid) in the jenkins pipeline is multi-threaded. After executing this script, it will pause for about 3 minutes for a long time before exiting and continuing the pipeline.

2.If the script is executed in a non multithreaded mode, it can exit quickly

3.Jenkins' build log information shows that "rebuild" in the pipeline

Exit 0 echo hello2 ", the last two sentences are not executed.