[INFO] cloning repository https://github.com/vladandrew/os_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vladandrew/os_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladandrew%2Fos_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladandrew%2Fos_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2beb9ae70dbc61efe0ef8b87f29c0c0a362f4ed5
[INFO] checking vladandrew/os_rust against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladandrew%2Fos_rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vladandrew/os_rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/vladandrew/os_rust
[INFO] finished tweaking git repo https://github.com/vladandrew/os_rust
[INFO] tweaked toml for git repo https://github.com/vladandrew/os_rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/vladandrew/os_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 880366a267098de3c4492b047f31d9e40a4e75ddcb89593e58ac545ecff7ca60
[INFO] running `Command { std: "docker" "start" "-a" "880366a267098de3c4492b047f31d9e40a4e75ddcb89593e58ac545ecff7ca60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "880366a267098de3c4492b047f31d9e40a4e75ddcb89593e58ac545ecff7ca60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "880366a267098de3c4492b047f31d9e40a4e75ddcb89593e58ac545ecff7ca60", kill_on_drop: false }`
[INFO] [stdout] 880366a267098de3c4492b047f31d9e40a4e75ddcb89593e58ac545ecff7ca60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92366a29d4004987e980996814ece1bae37c4dbb004a004548aaf325e6546a3d
[INFO] running `Command { std: "docker" "start" "-a" "92366a29d4004987e980996814ece1bae37c4dbb004a004548aaf325e6546a3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.11
[INFO] [stderr]     Checking rust_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | 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/5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1a95cddb5b8aaf6b.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rust_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 `rust_os` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "92366a29d4004987e980996814ece1bae37c4dbb004a004548aaf325e6546a3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92366a29d4004987e980996814ece1bae37c4dbb004a004548aaf325e6546a3d", kill_on_drop: false }`
[INFO] [stdout] 92366a29d4004987e980996814ece1bae37c4dbb004a004548aaf325e6546a3d