[INFO] cloning repository https://github.com/faireborn/rustos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faireborn/rustos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaireborn%2Frustos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaireborn%2Frustos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3935cf4f1d464a95b5fc5ba5b1cd056979fc4bce
[INFO] checking faireborn/rustos against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaireborn%2Frustos" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/faireborn/rustos
[INFO] finished tweaking git repo https://github.com/faireborn/rustos
[INFO] tweaked toml for git repo https://github.com/faireborn/rustos written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/faireborn/rustos 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/faireborn/rustos 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] 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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f38e670904bc6fe0b90e8b2f55b4d07a57bd9af9973a78404f16ea29df629a9
[INFO] running `Command { std: "docker" "start" "-a" "1f38e670904bc6fe0b90e8b2f55b4d07a57bd9af9973a78404f16ea29df629a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f38e670904bc6fe0b90e8b2f55b4d07a57bd9af9973a78404f16ea29df629a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f38e670904bc6fe0b90e8b2f55b4d07a57bd9af9973a78404f16ea29df629a9", kill_on_drop: false }`
[INFO] [stdout] 1f38e670904bc6fe0b90e8b2f55b4d07a57bd9af9973a78404f16ea29df629a9
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f6e94c2cbf88b4e16581ac16c6bc4c32c750af6c4452ea24051d82c6781a82d
[INFO] running `Command { std: "docker" "start" "-a" "5f6e94c2cbf88b4e16581ac16c6bc4c32c750af6c4452ea24051d82c6781a82d", kill_on_drop: false }`
[INFO] [stderr]     Checking rustos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 13 | |     loop {}
[INFO] [stdout] 14 | | }
[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/82310651b93a594a3fd69015e1562186a080d94c/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-54e42b35ab65fe3c.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rustos`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustos` (bin "rustos" test) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5f6e94c2cbf88b4e16581ac16c6bc4c32c750af6c4452ea24051d82c6781a82d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f6e94c2cbf88b4e16581ac16c6bc4c32c750af6c4452ea24051d82c6781a82d", kill_on_drop: false }`
[INFO] [stdout] 5f6e94c2cbf88b4e16581ac16c6bc4c32c750af6c4452ea24051d82c6781a82d