[INFO] cloning repository https://github.com/aQaTL/rpi_os_dev
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aQaTL/rpi_os_dev" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaQaTL%2Frpi_os_dev", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaQaTL%2Frpi_os_dev'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] acbb0c2849d0e9fc333339e9066c2074a76c26cf
[INFO] checking aQaTL/rpi_os_dev against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaQaTL%2Frpi_os_dev" "/workspace/builds/worker-84/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-84/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aQaTL/rpi_os_dev on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-84/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-84/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/aQaTL/rpi_os_dev
[INFO] finished tweaking git repo https://github.com/aQaTL/rpi_os_dev
[INFO] tweaked toml for git repo https://github.com/aQaTL/rpi_os_dev written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] crate git repo https://github.com/aQaTL/rpi_os_dev already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd99d7efebe523689bb452486c6877472b719e13a36f7ef2708ce9c24fc7104f
[INFO] running `Command { std: "docker" "start" "-a" "dd99d7efebe523689bb452486c6877472b719e13a36f7ef2708ce9c24fc7104f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd99d7efebe523689bb452486c6877472b719e13a36f7ef2708ce9c24fc7104f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd99d7efebe523689bb452486c6877472b719e13a36f7ef2708ce9c24fc7104f", kill_on_drop: false }`
[INFO] [stdout] dd99d7efebe523689bb452486c6877472b719e13a36f7ef2708ce9c24fc7104f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1a317a528eea9183272c46d3b3aad788466843249bc2a9afc786bc7a34bc6f6
[INFO] running `Command { std: "docker" "start" "-a" "d1a317a528eea9183272c46d3b3aad788466843249bc2a9afc786bc7a34bc6f6", 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:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn panic(info: &core::panic::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/936f2600b6c903b04387f74ed5cbce88bb06d243/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-29e5e596e889a0aa.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rpi_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `UART_FR`
[INFO] [stdout]   --> src/serial.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | const UART_FR: u32 = 0x3F201018;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mmio_write`
[INFO] [stdout]   --> src/serial.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn mmio_write(reg: u32, val: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mmio_read`
[INFO] [stdout]   --> src/serial.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn mmio_read(reg: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transmit_fifo_full`
[INFO] [stdout]   --> src/serial.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn transmit_fifo_full() -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_byte`
[INFO] [stdout]   --> src/serial.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn write_byte(c: u8) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d1a317a528eea9183272c46d3b3aad788466843249bc2a9afc786bc7a34bc6f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1a317a528eea9183272c46d3b3aad788466843249bc2a9afc786bc7a34bc6f6", kill_on_drop: false }`
[INFO] [stdout] d1a317a528eea9183272c46d3b3aad788466843249bc2a9afc786bc7a34bc6f6