[INFO] cloning repository https://github.com/VitalyAnkh/blog_os_vitalyr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VitalyAnkh/blog_os_vitalyr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVitalyAnkh%2Fblog_os_vitalyr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVitalyAnkh%2Fblog_os_vitalyr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b91caf9ab8425d29aa029de9d888284d7035150
[INFO] checking VitalyAnkh/blog_os_vitalyr against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVitalyAnkh%2Fblog_os_vitalyr" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VitalyAnkh/blog_os_vitalyr on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-12/source/.cargo/config
[INFO] removed /workspace/builds/worker-12/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/VitalyAnkh/blog_os_vitalyr
[INFO] finished tweaking git repo https://github.com/VitalyAnkh/blog_os_vitalyr
[INFO] tweaked toml for git repo https://github.com/VitalyAnkh/blog_os_vitalyr written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/VitalyAnkh/blog_os_vitalyr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a859af9cb38a272f69996c36115cb6693f1dafe9d9d1c25445be065ab8e69d6f
[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" "a859af9cb38a272f69996c36115cb6693f1dafe9d9d1c25445be065ab8e69d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a859af9cb38a272f69996c36115cb6693f1dafe9d9d1c25445be065ab8e69d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a859af9cb38a272f69996c36115cb6693f1dafe9d9d1c25445be065ab8e69d6f", kill_on_drop: false }`
[INFO] [stdout] a859af9cb38a272f69996c36115cb6693f1dafe9d9d1c25445be065ab8e69d6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 395731f994a8e2231054b8728d7862dbcca6130c02b6706492162a8a8ceac9dc
[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" "395731f994a8e2231054b8728d7862dbcca6130c02b6706492162a8a8ceac9dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bootloader v0.8.0
[INFO] [stderr]     Checking blog_os_vitalyr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.rlib
[INFO] [stdout]    = note: second definition in the local crate (`blog_os_vitalyr`)
[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 E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blog_os_vitalyr`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "395731f994a8e2231054b8728d7862dbcca6130c02b6706492162a8a8ceac9dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "395731f994a8e2231054b8728d7862dbcca6130c02b6706492162a8a8ceac9dc", kill_on_drop: false }`
[INFO] [stdout] 395731f994a8e2231054b8728d7862dbcca6130c02b6706492162a8a8ceac9dc