[INFO] cloning repository https://github.com/LukeBoland/MagOS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LukeBoland/MagOS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeBoland%2FMagOS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeBoland%2FMagOS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe55a4aa548551e582104d46685be354e65e5752
[INFO] checking LukeBoland/MagOS against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeBoland%2FMagOS" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LukeBoland/MagOS on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LukeBoland/MagOS
[INFO] finished tweaking git repo https://github.com/LukeBoland/MagOS
[INFO] tweaked toml for git repo https://github.com/LukeBoland/MagOS written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LukeBoland/MagOS 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b4206e9062603d1441296aa290e564679685ead1044f2d8f57bcc690cdd5a83
[INFO] running `Command { std: "docker" "start" "-a" "2b4206e9062603d1441296aa290e564679685ead1044f2d8f57bcc690cdd5a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b4206e9062603d1441296aa290e564679685ead1044f2d8f57bcc690cdd5a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4206e9062603d1441296aa290e564679685ead1044f2d8f57bcc690cdd5a83", kill_on_drop: false }`
[INFO] [stdout] 2b4206e9062603d1441296aa290e564679685ead1044f2d8f57bcc690cdd5a83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6dad6466416a5d9dc8a1fbd535afea4bf1e12cd1c09d53421fe1e4b80d44ad2
[INFO] running `Command { std: "docker" "start" "-a" "d6dad6466416a5d9dc8a1fbd535afea4bf1e12cd1c09d53421fe1e4b80d44ad2", kill_on_drop: false }`
[INFO] [stderr]     Checking MagOS v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 16 | |    loop {}
[INFO] [stdout] 17 | | }
[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/9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-d65a5ac20318153f.rlib
[INFO] [stdout]    = note: second definition in the local crate (`MagOS`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `MagOS` (bin "MagOS" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d6dad6466416a5d9dc8a1fbd535afea4bf1e12cd1c09d53421fe1e4b80d44ad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6dad6466416a5d9dc8a1fbd535afea4bf1e12cd1c09d53421fe1e4b80d44ad2", kill_on_drop: false }`
[INFO] [stdout] d6dad6466416a5d9dc8a1fbd535afea4bf1e12cd1c09d53421fe1e4b80d44ad2