[INFO] cloning repository https://github.com/AhsanTipu/Rust-Chapter-6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AhsanTipu/Rust-Chapter-6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhsanTipu%2FRust-Chapter-6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhsanTipu%2FRust-Chapter-6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 347e7e04160290abbca174e90cad7d198c288e72
[INFO] checking AhsanTipu/Rust-Chapter-6 against try#1c5262aa6c045a581fb974488793f09ed51fc498 for pr-78376
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAhsanTipu%2FRust-Chapter-6" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AhsanTipu/Rust-Chapter-6 on toolchain 1c5262aa6c045a581fb974488793f09ed51fc498
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AhsanTipu/Rust-Chapter-6
[INFO] finished tweaking git repo https://github.com/AhsanTipu/Rust-Chapter-6
[INFO] tweaked toml for git repo https://github.com/AhsanTipu/Rust-Chapter-6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/AhsanTipu/Rust-Chapter-6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e1f1a3accaa4efcd591a4f9d9f1aed17d5fe94bef6f4909b778d201f44ecafe
[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" "0e1f1a3accaa4efcd591a4f9d9f1aed17d5fe94bef6f4909b778d201f44ecafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e1f1a3accaa4efcd591a4f9d9f1aed17d5fe94bef6f4909b778d201f44ecafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e1f1a3accaa4efcd591a4f9d9f1aed17d5fe94bef6f4909b778d201f44ecafe", kill_on_drop: false }`
[INFO] [stdout] 0e1f1a3accaa4efcd591a4f9d9f1aed17d5fe94bef6f4909b778d201f44ecafe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95e8e3a698d12e71d9f3d6b376cf72d52a42a51624268ef93cd4f396e74a84fe
[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" "95e8e3a698d12e71d9f3d6b376cf72d52a42a51624268ef93cd4f396e74a84fe", kill_on_drop: false }`
[INFO] [stderr]     Checking practise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `practise`
[INFO] [stdout]    --> src/main.rs:181:5
[INFO] [stdout]     |
[INFO] [stdout] 181 | // }
[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 `practise`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "95e8e3a698d12e71d9f3d6b376cf72d52a42a51624268ef93cd4f396e74a84fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e8e3a698d12e71d9f3d6b376cf72d52a42a51624268ef93cd4f396e74a84fe", kill_on_drop: false }`
[INFO] [stdout] 95e8e3a698d12e71d9f3d6b376cf72d52a42a51624268ef93cd4f396e74a84fe