Support concurrent formatting of Text (#138) #461

Job	Run time
Microbenchmarks	22m 4s
Microbenchmarks	22m 4s
Instrumentation tests (23, google_apis)	13m 10s
Instrumentation tests (23, google_apis)	13m 10s
Instrumentation tests (26, google_apis)	14m 45s
Instrumentation tests (26, google_apis)	14m 45s
Instrumentation tests (30, google_apis)	26m 20s
Instrumentation tests (30, google_apis)	31m 36s
Checks	4m 7s
Checks	4m 7s
Unit tests	2m 16s
Unit tests	2m 16s
Codecov	0s
Codecov	0s
	2h 50m 40s

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