Change JSON format
Change JSON format

The JSON format does not parse or group or drop prefixes for
configurations. For each compiler target (host, etc.), the
configurations are just strings in an array. The targets is changed to
an array of maps as well.

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