[INFO] fetching crate buttons 0.3.1...
[INFO] testing buttons-0.3.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate buttons 0.3.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate buttons 0.3.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buttons 0.3.1
[INFO] finished tweaking crates.io crate buttons 0.3.1
[INFO] tweaked toml for crates.io crate buttons 0.3.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate buttons 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ab39e6db79662c5f3b530be27fc079bef5f535e68355aeabcaa9ef27a17f127
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2ab39e6db79662c5f3b530be27fc079bef5f535e68355aeabcaa9ef27a17f127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ab39e6db79662c5f3b530be27fc079bef5f535e68355aeabcaa9ef27a17f127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab39e6db79662c5f3b530be27fc079bef5f535e68355aeabcaa9ef27a17f127", kill_on_drop: false }`
[INFO] [stdout] 2ab39e6db79662c5f3b530be27fc079bef5f535e68355aeabcaa9ef27a17f127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7247731092a1d1a5f54bc15b8079520eae6afdc96e6cb088684a0534c20b0674
[INFO] running `Command { std: "docker" "start" "-a" "7247731092a1d1a5f54bc15b8079520eae6afdc96e6cb088684a0534c20b0674", kill_on_drop: false }`
[INFO] [stderr]    Compiling buttons v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "7247731092a1d1a5f54bc15b8079520eae6afdc96e6cb088684a0534c20b0674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7247731092a1d1a5f54bc15b8079520eae6afdc96e6cb088684a0534c20b0674", kill_on_drop: false }`
[INFO] [stdout] 7247731092a1d1a5f54bc15b8079520eae6afdc96e6cb088684a0534c20b0674
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b67494975d5c6f5355393231702f4b62435d079766a5503ba32a102b8d107c60
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b67494975d5c6f5355393231702f4b62435d079766a5503ba32a102b8d107c60", kill_on_drop: false }`
[INFO] [stderr]    Compiling buttons v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `winit`
[INFO] [stdout]   --> examples/winit.rs:55:2
[INFO] [stdout]    |
[INFO] [stdout] 55 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `examples/winit.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 `buttons` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b67494975d5c6f5355393231702f4b62435d079766a5503ba32a102b8d107c60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b67494975d5c6f5355393231702f4b62435d079766a5503ba32a102b8d107c60", kill_on_drop: false }`
[INFO] [stdout] b67494975d5c6f5355393231702f4b62435d079766a5503ba32a102b8d107c60