console: optimize single-string logging #564

Job	Run time
Build slim tarball	1m 34s
x86_64-darwin: with shared libraries	52m 35s
aarch64-linux: with shared libraries	23m 21s
x86_64-linux: with shared libraries	28m 52s
aarch64-darwin: with shared libraries	26m 18s
	2h 12m 40s

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