[INFO] cloning repository https://github.com/xeqlol/rustonly-kernel [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xeqlol/rustonly-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeqlol%2Frustonly-kernel", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeqlol%2Frustonly-kernel'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d43700590c090bb51cc2c6001c59de55376230d9 [INFO] testing xeqlol/rustonly-kernel against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxeqlol%2Frustonly-kernel" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/xeqlol/rustonly-kernel on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/xeqlol/rustonly-kernel [INFO] finished tweaking git repo https://github.com/xeqlol/rustonly-kernel [INFO] tweaked toml for git repo https://github.com/xeqlol/rustonly-kernel written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/xeqlol/rustonly-kernel already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6aaf233d405183df5adbd4982336f250dd1c7e8911566ac164e9f2091b2bfbc0 [INFO] running `Command { std: "docker" "start" "-a" "6aaf233d405183df5adbd4982336f250dd1c7e8911566ac164e9f2091b2bfbc0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6aaf233d405183df5adbd4982336f250dd1c7e8911566ac164e9f2091b2bfbc0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6aaf233d405183df5adbd4982336f250dd1c7e8911566ac164e9f2091b2bfbc0", kill_on_drop: false }` [INFO] [stdout] 6aaf233d405183df5adbd4982336f250dd1c7e8911566ac164e9f2091b2bfbc0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 135e49302a361aa726b601a87f8af6d9c51f82002ff71eb8e902d7bd9cf3c113 [INFO] running `Command { std: "docker" "start" "-a" "135e49302a361aa726b601a87f8af6d9c51f82002ff71eb8e902d7bd9cf3c113", kill_on_drop: false }` [INFO] [stderr] Compiling rustonly-kernel v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt` [INFO] [stdout] --> src/lib.rs:27:1 [INFO] [stdout] | [INFO] [stdout] 27 | #[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: asm in naked functions must use `noreturn` option [INFO] [stdout] --> src/lib.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | asm!("hlt"); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unsupported_naked_functions)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #32408 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: naked functions must contain a single asm block [INFO] [stdout] --> src/lib.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | / pub unsafe extern "C" fn _start() { [INFO] [stdout] 15 | | *(0xb8000 as *mut u16) = 0x2f4f; // O [INFO] [stdout] | | -------------------------------- non-asm is unsupported in naked functions [INFO] [stdout] 16 | | *(0xb8002 as *mut u16) = 0x2f4b; // K [INFO] [stdout] | | -------------------------------- non-asm is unsupported in naked functions [INFO] [stdout] 17 | | unsafe { [INFO] [stdout] 18 | | asm!("hlt"); [INFO] [stdout] 19 | | } [INFO] [stdout] 20 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #32408 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 2 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 `rustonly-kernel` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "135e49302a361aa726b601a87f8af6d9c51f82002ff71eb8e902d7bd9cf3c113", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "135e49302a361aa726b601a87f8af6d9c51f82002ff71eb8e902d7bd9cf3c113", kill_on_drop: false }` [INFO] [stdout] 135e49302a361aa726b601a87f8af6d9c51f82002ff71eb8e902d7bd9cf3c113