[INFO] cloning repository https://github.com/Sporious/Toy-Rust-OS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sporious/Toy-Rust-OS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSporious%2FToy-Rust-OS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSporious%2FToy-Rust-OS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f1ed894f7f5810e7e14b34d04bc263dea06b621
[INFO] checking Sporious/Toy-Rust-OS against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSporious%2FToy-Rust-OS" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sporious/Toy-Rust-OS on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sporious/Toy-Rust-OS
[INFO] finished tweaking git repo https://github.com/Sporious/Toy-Rust-OS
[INFO] tweaked toml for git repo https://github.com/Sporious/Toy-Rust-OS written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Sporious/Toy-Rust-OS already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `panic` setting is ignored for `test` profile
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdff90c6d3cf822f10d092b240c8fe03ca4f928f4640ad1b1bd68d1dd067d38c
[INFO] running `Command { std: "docker" "start" "-a" "bdff90c6d3cf822f10d092b240c8fe03ca4f928f4640ad1b1bd68d1dd067d38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdff90c6d3cf822f10d092b240c8fe03ca4f928f4640ad1b1bd68d1dd067d38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdff90c6d3cf822f10d092b240c8fe03ca4f928f4640ad1b1bd68d1dd067d38c", kill_on_drop: false }`
[INFO] [stdout] bdff90c6d3cf822f10d092b240c8fe03ca4f928f4640ad1b1bd68d1dd067d38c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0380197c608cb9d937ce9ee7c0a4616d79f88641aea1551ac2981b9678dda60c
[INFO] running `Command { std: "docker" "start" "-a" "0380197c608cb9d937ce9ee7c0a4616d79f88641aea1551ac2981b9678dda60c", kill_on_drop: false }`
[INFO] [stderr] warning: `panic` setting is ignored for `test` profile
[INFO] [stderr]    Compiling rpi_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking volatile v0.2.4
[INFO] [stdout] warning: unused import: `Iterator`
[INFO] [stdout]  --> src/stdio.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]   |                                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/stdio.rs:84:37
[INFO] [stdout]    |
[INFO] [stdout] 84 |         stdioback.guard_out = true; ///Lock the mutex 
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 85 |         Stdio { stdioback }
[INFO] [stdout]    |         ------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ReadOnly`, `WriteOnly`
[INFO] [stdout]  --> src/uart.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use volatile::{ReadOnly, ReadWrite, Volatile, WriteOnly};
[INFO] [stdout]   |                ^^^^^^^^                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::sync::atomic::AtomicBool`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use core::sync::atomic::AtomicBool;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[lang = "panic_fmt"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0522`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rpi_os`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `Iterator`
[INFO] [stdout]  --> src/stdio.rs:4:32
[INFO] [stdout]   |
[INFO] [stdout] 4 | use core::iter::{IntoIterator, Iterator};
[INFO] [stdout]   |                                ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/stdio.rs:84:37
[INFO] [stdout]    |
[INFO] [stdout] 84 |         stdioback.guard_out = true; ///Lock the mutex 
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 85 |         Stdio { stdioback }
[INFO] [stdout]    |         ------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ReadOnly`, `WriteOnly`
[INFO] [stdout]  --> src/uart.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use volatile::{ReadOnly, ReadWrite, Volatile, WriteOnly};
[INFO] [stdout]   |                ^^^^^^^^                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::sync::atomic::AtomicBool`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use core::sync::atomic::AtomicBool;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `eh_personality`
[INFO] [stdout]   --> src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub extern "C" fn eh_personality() {}
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `panic_unwind` (which `std` depends on)
[INFO] [stdout]    = note: first definition in `panic_unwind` loaded from /opt/rustwide/rustup-home/toolchains/3aedcf06b73fc36feeebca3d579e1d2a6c40acc5/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-787faa8b02fbd963.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rpi_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]   --> src/lib.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[lang = "panic_fmt"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0152, E0522.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0380197c608cb9d937ce9ee7c0a4616d79f88641aea1551ac2981b9678dda60c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0380197c608cb9d937ce9ee7c0a4616d79f88641aea1551ac2981b9678dda60c", kill_on_drop: false }`
[INFO] [stdout] 0380197c608cb9d937ce9ee7c0a4616d79f88641aea1551ac2981b9678dda60c