16e288acdd61fa5fa5e39f3936fb50499f82c085 test padding non micro timestamps (John Newbery)
995dd89d884bda3fb5ca1885c5887d989cd2cad3 [Tests] Make combine_logs.py handle multi-line logs (John Newbery)
Pull request description:
combine_logs.py currently inserts additional newlines into multi-line log messages, and doesn't color them properly. Fix both of those.
Tree-SHA512: dbe2f3ecc7cfbc95ee4350e648d127538c79cb6555257d4aeec12fe3d159366742b68e90e620c8ed7219a44b973395c7e5929ba374fae115fbee25560db645f6
Backport of Core PR14051