[INFO] cloning repository https://github.com/MilesFate/uwu-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MilesFate/uwu-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMilesFate%2Fuwu-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMilesFate%2Fuwu-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ed83d8a8f8e7cda83797bfbfd422bed98126176
[INFO] checking MilesFate/uwu-os/7ed83d8a8f8e7cda83797bfbfd422bed98126176 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMilesFate%2Fuwu-os" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MilesFate/uwu-os on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/MilesFate/uwu-os
[INFO] finished tweaking git repo https://github.com/MilesFate/uwu-os
[INFO] tweaked toml for git repo https://github.com/MilesFate/uwu-os written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MilesFate/uwu-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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bf75e6865894a610aecf605376c22db0d8d5d93dea7f194ac5a5d5ca3c13b86
[INFO] running `Command { std: "docker" "start" "-a" "0bf75e6865894a610aecf605376c22db0d8d5d93dea7f194ac5a5d5ca3c13b86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bf75e6865894a610aecf605376c22db0d8d5d93dea7f194ac5a5d5ca3c13b86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bf75e6865894a610aecf605376c22db0d8d5d93dea7f194ac5a5d5ca3c13b86", kill_on_drop: false }`
[INFO] [stdout] 0bf75e6865894a610aecf605376c22db0d8d5d93dea7f194ac5a5d5ca3c13b86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a51301414effaabeb521f51ec173337ccd1cf775596299bba67a5435b0f0abb1
[INFO] running `Command { std: "docker" "start" "-a" "a51301414effaabeb521f51ec173337ccd1cf775596299bba67a5435b0f0abb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.22
[INFO] [stderr]     Checking uwu-os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 12 | |     loop {}
[INFO] [stdout] 13 | | }
[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/f609b7e0586f81fefb3523e3e17adf779ac416be/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e0ee872a6f64065a.rlib
[INFO] [stdout]    = note: second definition in the local crate (`uwu_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ColorCode` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct ColorCode(u8);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/vga_buffer.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl ColorCode{
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 28 |     fn new(foreground: Color, background: Color) -> ColorCode{
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ScreenChar` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct ScreenChar {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BUFFER_HEIGHT` is never used
[INFO] [stdout]   --> src/vga_buffer.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 | const BUFFER_HEIGHT: usize = 25;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BUFFER_WIDTH` is never used
[INFO] [stdout]   --> src/vga_buffer.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 | const BUFFER_WIDTH: usize = 80;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Buffer` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Buffer {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Writer` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct Writer {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `uwu-os` (bin "uwu-os" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a51301414effaabeb521f51ec173337ccd1cf775596299bba67a5435b0f0abb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a51301414effaabeb521f51ec173337ccd1cf775596299bba67a5435b0f0abb1", kill_on_drop: false }`
[INFO] [stdout] a51301414effaabeb521f51ec173337ccd1cf775596299bba67a5435b0f0abb1