[INFO] fetching crate sbral 0.1.0...
[INFO] checking sbral-0.1.0 against master#029c9e18dd1f4668e1d42bb187c1c263dfe20093 for pr-157562
[INFO] extracting crate sbral 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate sbral 0.1.0
[INFO] finished tweaking crates.io crate sbral 0.1.0
[INFO] tweaked toml for crates.io crate sbral 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sbral 0.1.0 on toolchain 029c9e18dd1f4668e1d42bb187c1c263dfe20093
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+029c9e18dd1f4668e1d42bb187c1c263dfe20093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+029c9e18dd1f4668e1d42bb187c1c263dfe20093" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 89 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.4.12 (available: v0.7.6)
[INFO] [stderr]       Adding criterion v0.2.11 (available: v0.8.2)
[INFO] [stderr]       Adding im-rc v13.0.0 (available: v15.1.0)
[INFO] [stderr]       Adding proptest v0.9.6 (available: v1.11.0)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.1)
[INFO] [stderr]       Adding rand_pcg v0.1.2 (available: v0.10.2)
[INFO] [stderr]       Adding rpds v0.6.0 (available: v1.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+029c9e18dd1f4668e1d42bb187c1c263dfe20093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: Cargo.toml: can't find `main` bench at `benches/main.rs` or `benches/main/main.rs`. Please specify bench.path if you want to use a non-default path.
[INFO] [stderr] error: could not parse `sbral` (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 `main` bench at `benches/main.rs` or `benches/main/main.rs`. Please specify bench.path if you want to use a non-default path.
       error: could not parse `sbral` (manifest) due to 1 previous error