It's used only as a dev dependency in 9 crates.

Depender (with downloads and own rev deps) carbon-test-utils version
950 51 carbon-core dev ^0.8.0
360 carbon-pumpfun-decoder dev ^0.8.0
360 carbon-pump-swap-decoder dev ^0.8.0
210 carbon-meteora-pools-decoder dev ^0.8.0
170 carbon-moonshot-decoder dev ^0.8.0
170 carbon-system-program-decoder dev ^0.8.0
160 carbon-jupiter-dca-decoder dev ^0.8.0
160 carbon-lifinity-amm-v2-decoder dev ^0.8.0
160 carbon-fluxbeam-decoder dev ^0.8.0