Constant rustc_metadata::schema::METADATA_VERSION[][src]

pub const METADATA_VERSION: u8 = 4
🔬 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?

Metadata encoding version. NB: increment this if you change the format of metadata such that the rustc version can't be found to compare with rustc_version().