console: optimize single-string logging #224

Job	Run time
Build slim tarball	1m 30s
x86_64-darwin: with shared libraries	45m 45s
aarch64-linux: with shared libraries	24m 16s
x86_64-linux: with shared libraries	29m 52s
aarch64-darwin: with shared libraries	26m 1s
	2h 7m 24s

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