[INFO] cloning repository https://github.com/ankitsainidev/base_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ankitsainidev/base_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fankitsainidev%2Fbase_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fankitsainidev%2Fbase_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8fce7eab0f5238f2b5e3f275ca21ea7b52a5979
[INFO] checking ankitsainidev/base_os against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fankitsainidev%2Fbase_os" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ankitsainidev/base_os on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/ankitsainidev/base_os
[INFO] finished tweaking git repo https://github.com/ankitsainidev/base_os
[INFO] tweaked toml for git repo https://github.com/ankitsainidev/base_os written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ankitsainidev/base_os 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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8f017f87d69552b93882d33a6009d652d6c6f107242adac67d67f8933eaf001
[INFO] running `Command { std: "docker" "start" "-a" "e8f017f87d69552b93882d33a6009d652d6c6f107242adac67d67f8933eaf001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8f017f87d69552b93882d33a6009d652d6c6f107242adac67d67f8933eaf001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8f017f87d69552b93882d33a6009d652d6c6f107242adac67d67f8933eaf001", kill_on_drop: false }`
[INFO] [stdout] e8f017f87d69552b93882d33a6009d652d6c6f107242adac67d67f8933eaf001
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f49dfae7be65c7b6f9ceaeb24071cf169f8ea8a4c7d097ea936b4c2682c00e5f
[INFO] running `Command { std: "docker" "start" "-a" "f49dfae7be65c7b6f9ceaeb24071cf169f8ea8a4c7d097ea936b4c2682c00e5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.8.9
[INFO] [stderr]     Checking base_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]  --> src/main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | 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/e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a8a9ba95b1228749.rlib
[INFO] [stdout]   = note: second definition in the local crate (`base_os`)
[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 `base_os` (bin "base_os" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f49dfae7be65c7b6f9ceaeb24071cf169f8ea8a4c7d097ea936b4c2682c00e5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f49dfae7be65c7b6f9ceaeb24071cf169f8ea8a4c7d097ea936b4c2682c00e5f", kill_on_drop: false }`
[INFO] [stdout] f49dfae7be65c7b6f9ceaeb24071cf169f8ea8a4c7d097ea936b4c2682c00e5f
