Function rustc::ty::wf::predicate_obligations

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn predicate_obligations<'a, 'gcx, 'tcx>(
    infcx: &InferCtxt<'a, 'gcx, 'tcx>, 
    param_env: ParamEnv<'tcx>, 
    body_id: NodeId, 
    predicate: &Predicate<'tcx>, 
    span: Span
) -> Vec<PredicateObligation<'tcx>>

🔬 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?