Constant GUEST_CARGO_CONFIG_TEMPLATE 

const GUEST_CARGO_CONFIG_TEMPLATE: &str = "[build]\ntarget = \"{{ guest_target }}\"\nrustflags = [\n  \"-C\", \"target-feature=+m,-unaligned-scalar-mem,+relax\",\n  \"-C\", \"link-arg=-Tmemory.x\",\n  \"-C\", \"link-arg=-Tlink.x\",\n  \"-C\", \"link-arg=--save-temps\",\n  \"-C\", \"force-frame-pointers\",\n  \"-C\", \"passes=lower-atomic\",\n  \"--cfg\", \"getrandom_backend=\\\"custom\\\"\",\n]\n\n[env]\nCC = \"clang\"\n\n[unstable]\nbuild-std = [\"alloc\", \"core\", \"panic_abort\", \"compiler_builtins\", \"std\", \"proc_macro\"]\nbuild-std-features = [\"compiler-builtins-mem\"]\n";