only issue `logChecker` messages when necessary #19695

Job	Run time
build_make (ubuntu:24.04)	3m 31s
build_make (ubuntu:25.10)	3m 48s
build_cmake (ubuntu:25.10, true, true)	2m 57s
build_make (alpine:3.23)	5m 52s
build_cmake (alpine:3.23, false, false)	4m 25s
build_cmake (ubuntu:24.04, true, true)	4m 19s
	24m 52s

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