Add ON_DISK_VERSION constant.
Add ON_DISK_VERSION constant.

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