Add proper unique_ids for tasks.

4 jobs from clean_up_task in 3 minutes 35 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #2858
build_cmake

00:42

 
  Test
passed #2859
run_tests

00:42

 
  Sanitizer
passed #2861
run_address_sanitizer

01:14

passed #2860
run_thread_sanitizer

00:56