sccache includes support for caching Rust compilation. This includes many caveats, and is primarily focused on caching rustc invocations as produced by cargo. A (possibly-incomplete) list follows:
--emit
is required.--crate-name
is required.link
and dep-info
are supported as --emit
values, and link
must be present.--out-dir
is required.-o file
is not supported.env!
require Rust >= 1.46 to be tracked in caching.If you are using Rust 1.18 or later, you can ask cargo to wrap all compilation with sccache by setting RUSTC_WRAPPER=sccache
in your build environment.