[INFO] cloning repository https://github.com/nlflint/BubbleSort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nlflint/BubbleSort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlflint%2FBubbleSort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlflint%2FBubbleSort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce08fb5b86f01910ee0f2cab2450dcbe89ecfc7b
[INFO] testing nlflint/BubbleSort against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnlflint%2FBubbleSort" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nlflint/BubbleSort on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nlflint/BubbleSort
[INFO] finished tweaking git repo https://github.com/nlflint/BubbleSort
[INFO] tweaked toml for git repo https://github.com/nlflint/BubbleSort written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/nlflint/BubbleSort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36d998e64ff3f695f54f93a1b03a4959f963d2abb8c4cb6815578e82a10104d9
[INFO] running `Command { std: "docker" "start" "-a" "36d998e64ff3f695f54f93a1b03a4959f963d2abb8c4cb6815578e82a10104d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36d998e64ff3f695f54f93a1b03a4959f963d2abb8c4cb6815578e82a10104d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d998e64ff3f695f54f93a1b03a4959f963d2abb8c4cb6815578e82a10104d9", kill_on_drop: false }`
[INFO] [stdout] 36d998e64ff3f695f54f93a1b03a4959f963d2abb8c4cb6815578e82a10104d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4109c71b68a580dc0d40187f45b44e576b69e4adf0d1c02940c77d1e1a4ab78a
[INFO] running `Command { std: "docker" "start" "-a" "4109c71b68a580dc0d40187f45b44e576b69e4adf0d1c02940c77d1e1a4ab78a", kill_on_drop: false }`
[INFO] [stderr]    Compiling BubbleSort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `BubbleSort`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / use std::cmp::Ordering;
[INFO] [stdout] 2  | |
[INFO] [stdout] 3  | | fn bubble_sort<T: PartialOrd>(mut collection :Vec<T>) -> Vec<T> {
[INFO] [stdout] 4  | |     let mut swap_happened = false;
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |         "pineapple".to_string()]);
[INFO] [stdout] 80 | | }
[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 `BubbleSort` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4109c71b68a580dc0d40187f45b44e576b69e4adf0d1c02940c77d1e1a4ab78a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4109c71b68a580dc0d40187f45b44e576b69e4adf0d1c02940c77d1e1a4ab78a", kill_on_drop: false }`
[INFO] [stdout] 4109c71b68a580dc0d40187f45b44e576b69e4adf0d1c02940c77d1e1a4ab78a