[INFO] cloning repository https://github.com/zephaniahong/comprehensive-rust-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zephaniahong/comprehensive-rust-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzephaniahong%2Fcomprehensive-rust-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzephaniahong%2Fcomprehensive-rust-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8821b82c7022b5b9d7f0c31bf15a22169841b5a1
[INFO] checking zephaniahong/comprehensive-rust-exercises against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzephaniahong%2Fcomprehensive-rust-exercises" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zephaniahong/comprehensive-rust-exercises
[INFO] finished tweaking git repo https://github.com/zephaniahong/comprehensive-rust-exercises
[INFO] tweaked toml for git repo https://github.com/zephaniahong/comprehensive-rust-exercises written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zephaniahong/comprehensive-rust-exercises on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zephaniahong/comprehensive-rust-exercises 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" "+82310651b93a594a3fd69015e1562186a080d94c" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d26d35d3889ae86fc48a5cd063b59395dbe654915890892b5ea714d738040f69
[INFO] running `Command { std: "docker" "start" "-a" "d26d35d3889ae86fc48a5cd063b59395dbe654915890892b5ea714d738040f69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d26d35d3889ae86fc48a5cd063b59395dbe654915890892b5ea714d738040f69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d26d35d3889ae86fc48a5cd063b59395dbe654915890892b5ea714d738040f69", kill_on_drop: false }`
[INFO] [stdout] d26d35d3889ae86fc48a5cd063b59395dbe654915890892b5ea714d738040f69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3941f55350ea4dfca392b211b5adfef709fb12b96a9d8e1522cb746bdd3ad4dd
[INFO] running `Command { std: "docker" "start" "-a" "3941f55350ea4dfca392b211b5adfef709fb12b96a9d8e1522cb746bdd3ad4dd", kill_on_drop: false }`
[INFO] [stderr]     Checking comprehensive-rust-exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `comprehensive_rust_exercises`
[INFO] [stdout]  --> src/main.rs:2:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |
[INFO] [stdout]   | ^ consider adding a `main` function to `src/main.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 `comprehensive-rust-exercises` (bin "comprehensive-rust-exercises") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3941f55350ea4dfca392b211b5adfef709fb12b96a9d8e1522cb746bdd3ad4dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3941f55350ea4dfca392b211b5adfef709fb12b96a9d8e1522cb746bdd3ad4dd", kill_on_drop: false }`
[INFO] [stdout] 3941f55350ea4dfca392b211b5adfef709fb12b96a9d8e1522cb746bdd3ad4dd
