error: the 'rustc' binary, normally provided by the 'rustc' component, is not applicable to the 'stable-x86_64-unknown-linux-gnu' toolchain
cargo pgo instrument
Cannot get cargo metadata: CargoMetadata { stderr: "error: process didn't exit successfully: `rustc -vV` (exit status: 1)\n--- stderr\nerror: the 'rustc' binary, normally provided by the 'rustc' component, is not applicable to the 'stable-x86_64-unknown-linux-gnu' toolchain\n\n" }
make: *** [Makefile:34: rule] Error 1