Constant rustc::hir::def_id::RESERVED_FOR_INCR_COMP_CACHE

pub const RESERVED_FOR_INCR_COMP_CACHE: CrateNum = CrateNum(u32::MAX - 2)

🔬 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?

A special CrateNum that we use for the tcx.rcache when decoding from the incr. comp. cache.