Use 1.51.0 in old cargos test
Use 1.51.0 in old cargos test

Signed-off-by: hi-rustin <c7d168847ad25898cad3ce2d480246882ded574b@gmail.com>

eminence/cargo,rustyhorde/cargo,rustyhorde/cargo,rust-lang/cargo,eminence/cargo,nipunn1313/cargo,rust-lang/cargo,eminence/cargo,nipunn1313/cargo,eminence/cargo,rustyhorde/cargo,nipunn1313/cargo,rustyhorde/cargo,nipunn1313/cargo,rust-lang/cargo,rust-lang/cargo