Expand description
Stable Cargo/libtest execution for the owned Rust frontend.
Source preparation happens in an isolated workspace. For cargo test,
Cargo builds each test artifact once and every libtest case then runs in a
process of its own with an evidence directory of its own, so attribution
is exact by construction; doctests run through rust_owned_doctests, with
this program standing in for rustdoc. For cargo nextest run, nextest
keeps its own scheduling and retries and this program serves as its target
runner (rust_owned_nextest), recording each attempt it launches.