Simplify handling of "Start" and "Duration" entries

6 jobs for movie-fixes in 3 minutes and 16 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #367861
build

00:03:03

passed #367866
build_android

00:00:57

passed #367862
build_clang_libcpp

00:03:16

passed #367865
build_clazy

00:03:15

passed #367864
build_mingw64_fedora

00:02:46

passed #367863
build_ubuntu_16_04

00:01:39