[INFO] cloning repository https://github.com/codingJourneyFromUnemployment/rust_learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codingJourneyFromUnemployment/rust_learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FcodingJourneyFromUnemployment%2Frust_learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FcodingJourneyFromUnemployment%2Frust_learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19b60fcd61b67c2bf4875064425690c28325d818
[INFO] testing codingJourneyFromUnemployment/rust_learn against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FcodingJourneyFromUnemployment%2Frust_learn" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codingJourneyFromUnemployment/rust_learn on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/codingJourneyFromUnemployment/rust_learn
[INFO] finished tweaking git repo https://github.com/codingJourneyFromUnemployment/rust_learn
[INFO] tweaked toml for git repo https://github.com/codingJourneyFromUnemployment/rust_learn written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/codingJourneyFromUnemployment/rust_learn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eacbcc1d655d0eaf60665de98e0d4853c36cefee31668a780982de4ff4a34a9e
[INFO] running `Command { std: "docker" "start" "-a" "eacbcc1d655d0eaf60665de98e0d4853c36cefee31668a780982de4ff4a34a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eacbcc1d655d0eaf60665de98e0d4853c36cefee31668a780982de4ff4a34a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eacbcc1d655d0eaf60665de98e0d4853c36cefee31668a780982de4ff4a34a9e", kill_on_drop: false }`
[INFO] [stdout] eacbcc1d655d0eaf60665de98e0d4853c36cefee31668a780982de4ff4a34a9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68cb9ccd4a6e90488bc3abae3fceef081595dec0dfd830ede685e30a1d6d13d1
[INFO] running `Command { std: "docker" "start" "-a" "68cb9ccd4a6e90488bc3abae3fceef081595dec0dfd830ede685e30a1d6d13d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/gramma.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let mut c = 30i32;
[INFO] [stdout]   |       ----^
[INFO] [stdout]   |       |
[INFO] [stdout]   |       help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `variable_binding`
[INFO] [stdout]   --> src/bin/variable_binding.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | // }
[INFO] [stdout]    |     ^ consider adding a `main` function to `src/bin/variable_binding.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_learn` (bin "variable_binding") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "68cb9ccd4a6e90488bc3abae3fceef081595dec0dfd830ede685e30a1d6d13d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68cb9ccd4a6e90488bc3abae3fceef081595dec0dfd830ede685e30a1d6d13d1", kill_on_drop: false }`
[INFO] [stdout] 68cb9ccd4a6e90488bc3abae3fceef081595dec0dfd830ede685e30a1d6d13d1