[INFO] cloning repository https://github.com/EugenyCh/RustGCD
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EugenyCh/RustGCD" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEugenyCh%2FRustGCD", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEugenyCh%2FRustGCD'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5780b5bd16c97548bb191a0382bc3123863d377b
[INFO] testing EugenyCh/RustGCD against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEugenyCh%2FRustGCD" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EugenyCh/RustGCD on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EugenyCh/RustGCD
[INFO] finished tweaking git repo https://github.com/EugenyCh/RustGCD
[INFO] tweaked toml for git repo https://github.com/EugenyCh/RustGCD written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/EugenyCh/RustGCD already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11e3805207d9cb22222cd6fa36940d8e1c287e9e423ce9113b58cd1f682f959f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "11e3805207d9cb22222cd6fa36940d8e1c287e9e423ce9113b58cd1f682f959f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11e3805207d9cb22222cd6fa36940d8e1c287e9e423ce9113b58cd1f682f959f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11e3805207d9cb22222cd6fa36940d8e1c287e9e423ce9113b58cd1f682f959f", kill_on_drop: false }`
[INFO] [stdout] 11e3805207d9cb22222cd6fa36940d8e1c287e9e423ce9113b58cd1f682f959f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12f7386ed2e7539bfdd0cceddff4bbd41c1a28f0686692a5b32d57722b43d487
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "12f7386ed2e7539bfdd0cceddff4bbd41c1a28f0686692a5b32d57722b43d487", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustGCD v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `RustGCD`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / fn gcd(mut n: u64, mut m: u64) -> u64 {
[INFO] [stdout] 2  | |     assert!(n != 0 && m != 0);
[INFO] [stdout] 3  | |     while m != 0 {
[INFO] [stdout] 4  | |         if m < n {
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |                3 * 11);
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `RustGCD`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "12f7386ed2e7539bfdd0cceddff4bbd41c1a28f0686692a5b32d57722b43d487", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f7386ed2e7539bfdd0cceddff4bbd41c1a28f0686692a5b32d57722b43d487", kill_on_drop: false }`
[INFO] [stdout] 12f7386ed2e7539bfdd0cceddff4bbd41c1a28f0686692a5b32d57722b43d487