Function rustc::middle::cstore::used_crates

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn used_crates(
    tcx: TyCtxt, 
    prefer: LinkagePreference
) -> Vec<(CrateNum, LibSource)>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?