[INFO] fetching crate hotcorners 0.2.1...
[INFO] checking hotcorners-0.2.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate hotcorners 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate hotcorners 0.2.1
[INFO] finished tweaking crates.io crate hotcorners 0.2.1
[INFO] tweaked toml for crates.io crate hotcorners 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hotcorners 0.2.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hotcorners 0.2.1 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.22.1
[INFO] [stderr]   Downloaded windows_i686_msvc v0.22.1
[INFO] [stderr]   Downloaded windows v0.22.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f4846714532c72781ad010e066a57e18d45d84a5ce2707ac66a2b165d4f6f49
[INFO] running `Command { std: "docker" "start" "-a" "4f4846714532c72781ad010e066a57e18d45d84a5ce2707ac66a2b165d4f6f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f4846714532c72781ad010e066a57e18d45d84a5ce2707ac66a2b165d4f6f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f4846714532c72781ad010e066a57e18d45d84a5ce2707ac66a2b165d4f6f49", kill_on_drop: false }`
[INFO] [stdout] 4f4846714532c72781ad010e066a57e18d45d84a5ce2707ac66a2b165d4f6f49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e62542b63707f017babf95cae388a9fdd2f3ed173ddb13f64650f96478a08f09
[INFO] running `Command { std: "docker" "start" "-a" "e62542b63707f017babf95cae388a9fdd2f3ed173ddb13f64650f96478a08f09", kill_on_drop: false }`
[INFO] [stderr]     Checking windows v0.22.1
[INFO] [stderr]     Checking hotcorners v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `hotcorners`
[INFO] [stdout]    --> src/main.rs:222:2
[INFO] [stdout]     |
[INFO] [stdout] 222 | }
[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 `hotcorners` (bin "hotcorners") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e62542b63707f017babf95cae388a9fdd2f3ed173ddb13f64650f96478a08f09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e62542b63707f017babf95cae388a9fdd2f3ed173ddb13f64650f96478a08f09", kill_on_drop: false }`
[INFO] [stdout] e62542b63707f017babf95cae388a9fdd2f3ed173ddb13f64650f96478a08f09