Fix nightly breakage of doctests in workspaces #69
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In rust-lang/cargo#8954 the working directory for the runner executable changed for doctests. Before, the working directory was the crate dir, now it is the workspace dir. This lead to a bug in bootimage because it now looked for the `test-args` and other config option in the workpace root `Cargo.toml`, instead of the crate-specific `Cargo.toml`. This commit fixes this by using the `CARGO_MANIFEST_DIR` environment variable for determining the `Cargo.toml` path, instead of directly using `cargo locate-project` as before.
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In rust-lang/cargo#8954 the working directory for the runner executable changed for doctests. Before, the working directory was the crate dir, now it is the workspace dir. This lead to a bug in bootimage because it now looked for the
test-argsand other config option in the workpace rootCargo.toml, instead of the crate-specificCargo.toml.This commit fixes this by using the
CARGO_MANIFEST_DIRenvironment variable for determining theCargo.tomlpath, instead of directly usingcargo locate-projectas before.