[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#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSporious%2FToy-Rust-OS" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sporious/Toy-Rust-OS 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] 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-6/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 0484c70237209b4f4ba9dbd6cfefaaccad21f643a5b64dbf53ef301e79902075
[INFO] running `Command { std: "docker" "start" "-a" "0484c70237209b4f4ba9dbd6cfefaaccad21f643a5b64dbf53ef301e79902075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0484c70237209b4f4ba9dbd6cfefaaccad21f643a5b64dbf53ef301e79902075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0484c70237209b4f4ba9dbd6cfefaaccad21f643a5b64dbf53ef301e79902075", kill_on_drop: false }`
[INFO] [stdout] 0484c70237209b4f4ba9dbd6cfefaaccad21f643a5b64dbf53ef301e79902075
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 62a8ce7d737ebc22df16edde777483e9f805623011fb91563e251d5b58344041
[INFO] running `Command { std: "docker" "start" "-a" "62a8ce7d737ebc22df16edde777483e9f805623011fb91563e251d5b58344041", 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 volatile v0.2.4
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:69
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(compiler_builtins_lib, lang_items, asm, pointer_methods, const_fn)]
[INFO] [stdout]   |                                                                     ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:69
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(compiler_builtins_lib, lang_items, asm, pointer_methods, const_fn)]
[INFO] [stdout]   |                                                                     ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[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]    = help: use `//` for a plain comment
[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] 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]    = help: use `//` for a plain comment
[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/5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e4ae8465c73bb991.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 3 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0522, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0522`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rpi_os` due to 4 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 3 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0152, E0522, E0557.
[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" "62a8ce7d737ebc22df16edde777483e9f805623011fb91563e251d5b58344041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62a8ce7d737ebc22df16edde777483e9f805623011fb91563e251d5b58344041", kill_on_drop: false }`
[INFO] [stdout] 62a8ce7d737ebc22df16edde777483e9f805623011fb91563e251d5b58344041