[INFO] cloning repository https://github.com/mrvillage/ieu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrvillage/ieu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrvillage%2Fieu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrvillage%2Fieu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e627e8b2d84e13d5c85b65e15b9fb3fe9f0235d
[INFO] checking mrvillage/ieu against master#dc375db7d8df0aa450e622c529147c95eee756f5 for pr-156749
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrvillage%2Fieu" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mrvillage/ieu
[INFO] finished tweaking git repo https://github.com/mrvillage/ieu
[INFO] tweaked toml for git repo https://github.com/mrvillage/ieu written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mrvillage/ieu on toolchain dc375db7d8df0aa450e622c529147c95eee756f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mrvillage/ieu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc375db7d8df0aa450e622c529147c95eee756f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: Cargo.toml: can't find `basic` bench at `benches/basic.rs` or `benches/basic/main.rs`. Please specify bench.path if you want to use a non-default path.
[INFO] [stderr] error: could not parse `ieu` (manifest) due to 1 previous error


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: command failed: exit status: 101
       
       error: Cargo.toml: can't find `basic` bench at `benches/basic.rs` or `benches/basic/main.rs`. Please specify bench.path if you want to use a non-default path.
       error: could not parse `ieu` (manifest) due to 1 previous error