[INFO] cloning repository https://github.com/liamweeks/rpi_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liamweeks/rpi_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamweeks%2Frpi_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamweeks%2Frpi_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 634c1a607e4025b4c29f116cdfe8bdaaf603d1f7
[INFO] checking liamweeks/rpi_os against master#c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3 for pr-141352
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamweeks%2Frpi_os" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/liamweeks/rpi_os on toolchain c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/liamweeks/rpi_os
[INFO] finished tweaking git repo https://github.com/liamweeks/rpi_os
[INFO] tweaked toml for git repo https://github.com/liamweeks/rpi_os written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/liamweeks/rpi_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" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce4392d9030b6fce8b2f3539f8f41022b7398cc727feb44796d537451c118f3d
[INFO] running `Command { std: "docker" "start" "-a" "ce4392d9030b6fce8b2f3539f8f41022b7398cc727feb44796d537451c118f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce4392d9030b6fce8b2f3539f8f41022b7398cc727feb44796d537451c118f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce4392d9030b6fce8b2f3539f8f41022b7398cc727feb44796d537451c118f3d", kill_on_drop: false }`
[INFO] [stdout] ce4392d9030b6fce8b2f3539f8f41022b7398cc727feb44796d537451c118f3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5f015f79e4afac3cc77369562b268a43f0e1ed171c8e520bb563de24c4c33ac
[INFO] running `Command { std: "docker" "start" "-a" "d5f015f79e4afac3cc77369562b268a43f0e1ed171c8e520bb563de24c4c33ac", kill_on_drop: false }`
[INFO] [stderr]     Checking rpi_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 57 | |     loop {}
[INFO] [stdout] 58 | | }
[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/c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b38d63f8b721b18d.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rpi_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rpi_os` (bin "rpi_os" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rpi_os` (bin "rpi_os") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d5f015f79e4afac3cc77369562b268a43f0e1ed171c8e520bb563de24c4c33ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5f015f79e4afac3cc77369562b268a43f0e1ed171c8e520bb563de24c4c33ac", kill_on_drop: false }`
[INFO] [stdout] d5f015f79e4afac3cc77369562b268a43f0e1ed171c8e520bb563de24c4c33ac