[INFO] cloning repository https://github.com/quackitsquinn/simple_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/quackitsquinn/simple_rust_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquackitsquinn%2Fsimple_rust_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquackitsquinn%2Fsimple_rust_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 180666ac9bd54b1483abb6e4baa898da430e46fc
[INFO] checking quackitsquinn/simple_rust_os against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquackitsquinn%2Fsimple_rust_os" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/quackitsquinn/simple_rust_os
[INFO] finished tweaking git repo https://github.com/quackitsquinn/simple_rust_os
[INFO] tweaked toml for git repo https://github.com/quackitsquinn/simple_rust_os written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/quackitsquinn/simple_rust_os on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/quackitsquinn/simple_rust_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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e502bf75ff8a09f23783ae1851bb95f1ca32ad10ef1cd7ed1a2d36807bdcb3db
[INFO] running `Command { std: "docker" "start" "-a" "e502bf75ff8a09f23783ae1851bb95f1ca32ad10ef1cd7ed1a2d36807bdcb3db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e502bf75ff8a09f23783ae1851bb95f1ca32ad10ef1cd7ed1a2d36807bdcb3db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e502bf75ff8a09f23783ae1851bb95f1ca32ad10ef1cd7ed1a2d36807bdcb3db", kill_on_drop: false }`
[INFO] [stdout] e502bf75ff8a09f23783ae1851bb95f1ca32ad10ef1cd7ed1a2d36807bdcb3db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4a922d294f0f379ce6fb25db1872a24a9dd681721bee2dc7b124ecfe5297bc0
[INFO] running `Command { std: "docker" "start" "-a" "b4a922d294f0f379ce6fb25db1872a24a9dd681721bee2dc7b124ecfe5297bc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling novos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Command` and `Stdio`
[INFO] [stdout]  --> build.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::process::{Command, Stdio};
[INFO] [stdout]   |                    ^^^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `log` is never used
[INFO] [stdout]  --> build.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn log(txt: &str) {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | / pub fn panic_fmt(_info: &core::panic::PanicInfo) -> ! {
[INFO] [stdout] 14 | |     loop {}
[INFO] [stdout] 15 | | }
[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/a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9fbdd90241d2d923.rlib
[INFO] [stdout]    = note: second definition in the local crate (`novos`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `novos` (bin "novos" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `mb2_magic`
[INFO] [stdout]   --> src/main.rs:34:22
[INFO] [stdout]    |
[INFO] [stdout] 34 | extern "C" fn kstart(mb2_magic: u32, mb2_info_ptr: u32) -> ! {
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mb2_magic`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mb2_info_ptr`
[INFO] [stdout]   --> src/main.rs:34:38
[INFO] [stdout]    |
[INFO] [stdout] 34 | extern "C" fn kstart(mb2_magic: u32, mb2_info_ptr: u32) -> ! {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mb2_info_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_chars_at` is never used
[INFO] [stdout]   --> src/main.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn set_chars_at(x: usize, y: usize, s: &[u8]) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b4a922d294f0f379ce6fb25db1872a24a9dd681721bee2dc7b124ecfe5297bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a922d294f0f379ce6fb25db1872a24a9dd681721bee2dc7b124ecfe5297bc0", kill_on_drop: false }`
[INFO] [stdout] b4a922d294f0f379ce6fb25db1872a24a9dd681721bee2dc7b124ecfe5297bc0