[INFO] cloning repository https://github.com/benaryorg/rust-loop_benchmarking
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benaryorg/rust-loop_benchmarking" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenaryorg%2Frust-loop_benchmarking", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenaryorg%2Frust-loop_benchmarking'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80cf66c5aa1e00a647c0b89f82efed88bfac73e3
[INFO] testing benaryorg/rust-loop_benchmarking against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenaryorg%2Frust-loop_benchmarking" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benaryorg/rust-loop_benchmarking on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benaryorg/rust-loop_benchmarking
[INFO] finished tweaking git repo https://github.com/benaryorg/rust-loop_benchmarking
[INFO] tweaked toml for git repo https://github.com/benaryorg/rust-loop_benchmarking written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/benaryorg/rust-loop_benchmarking already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1c0fab78346202c05c71499a4a5c08f828e4b28debb2eb02f592d92f9a1d5b4
[INFO] running `Command { std: "docker" "start" "-a" "a1c0fab78346202c05c71499a4a5c08f828e4b28debb2eb02f592d92f9a1d5b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1c0fab78346202c05c71499a4a5c08f828e4b28debb2eb02f592d92f9a1d5b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1c0fab78346202c05c71499a4a5c08f828e4b28debb2eb02f592d92f9a1d5b4", kill_on_drop: false }`
[INFO] [stdout] a1c0fab78346202c05c71499a4a5c08f828e4b28debb2eb02f592d92f9a1d5b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44759be6b68e6fa48710bce1bbd275c6bfd7d4e780c25e7f2189cdfd2c3ae580
[INFO] running `Command { std: "docker" "start" "-a" "44759be6b68e6fa48710bce1bbd275c6bfd7d4e780c25e7f2189cdfd2c3ae580", kill_on_drop: false }`
[INFO] [stderr]    Compiling loop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `loop`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![feature(test)]
[INFO] [stdout] 2  | | #![feature(step_by)]
[INFO] [stdout] 3  | |
[INFO] [stdout] 4  | | extern crate test;
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |     bench.iter(while_loop);
[INFO] [stdout] 32 | | }
[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 `loop` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "44759be6b68e6fa48710bce1bbd275c6bfd7d4e780c25e7f2189cdfd2c3ae580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44759be6b68e6fa48710bce1bbd275c6bfd7d4e780c25e7f2189cdfd2c3ae580", kill_on_drop: false }`
[INFO] [stdout] 44759be6b68e6fa48710bce1bbd275c6bfd7d4e780c25e7f2189cdfd2c3ae580