[INFO] cloning repository https://github.com/KnstAnt/task3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KnstAnt/task3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnstAnt%2Ftask3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnstAnt%2Ftask3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc889d86cdf1f7cc032805b6cd5128bade77853b
[INFO] checking KnstAnt/task3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnstAnt%2Ftask3" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KnstAnt/task3 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KnstAnt/task3
[INFO] finished tweaking git repo https://github.com/KnstAnt/task3
[INFO] tweaked toml for git repo https://github.com/KnstAnt/task3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/KnstAnt/task3 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5a32a6444e3806ff3b76b572cf5abf9d6f93035735af7f61982fbb8ec37c587
[INFO] running `Command { std: "docker" "start" "-a" "a5a32a6444e3806ff3b76b572cf5abf9d6f93035735af7f61982fbb8ec37c587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5a32a6444e3806ff3b76b572cf5abf9d6f93035735af7f61982fbb8ec37c587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a32a6444e3806ff3b76b572cf5abf9d6f93035735af7f61982fbb8ec37c587", kill_on_drop: false }`
[INFO] [stdout] a5a32a6444e3806ff3b76b572cf5abf9d6f93035735af7f61982fbb8ec37c587
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d52900a58c1fdf9976b239b12b47b0e0918b9fb5af750c61c2382ba5f806aa30
[INFO] running `Command { std: "docker" "start" "-a" "d52900a58c1fdf9976b239b12b47b0e0918b9fb5af750c61c2382ba5f806aa30", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking memoffset v0.9.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling async-trait v0.1.73
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking sha2 v0.10.7
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]     Checking sha256 v1.4.0
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]     Checking argh_shared v0.1.12
[INFO] [stderr]    Compiling argh_derive v0.1.12
[INFO] [stderr]     Checking argh v0.1.12
[INFO] [stderr]     Checking hash_finder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.63s
[INFO] running `Command { std: "docker" "inspect" "d52900a58c1fdf9976b239b12b47b0e0918b9fb5af750c61c2382ba5f806aa30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d52900a58c1fdf9976b239b12b47b0e0918b9fb5af750c61c2382ba5f806aa30", kill_on_drop: false }`
[INFO] [stdout] d52900a58c1fdf9976b239b12b47b0e0918b9fb5af750c61c2382ba5f806aa30