Change some size types.

4 jobs from clean_up_task in 3 minutes 31 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #2862
build_cmake

00:40

 
  Test
passed #2863
run_tests

00:39

 
  Sanitizer
passed #2865
run_address_sanitizer

01:15

passed #2864
run_thread_sanitizer

00:56