[INFO] cloning repository https://github.com/kushurox/lingangu_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kushurox/lingangu_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkushurox%2Flingangu_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkushurox%2Flingangu_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49361ad96e034392514cb39c9490267ef0e1b0dd
[INFO] checking kushurox/lingangu_os against master#667247db71ea18c4130dd018d060e7f09d589490 for pr-140824
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkushurox%2Flingangu_os" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kushurox/lingangu_os on toolchain 667247db71ea18c4130dd018d060e7f09d589490
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/kushurox/lingangu_os
[INFO] finished tweaking git repo https://github.com/kushurox/lingangu_os
[INFO] tweaked toml for git repo https://github.com/kushurox/lingangu_os written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kushurox/lingangu_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" "+667247db71ea18c4130dd018d060e7f09d589490" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4bd745235620fede0e1255b42fee4712b626a4b8d5670507eb1e4cc246f473f
[INFO] running `Command { std: "docker" "start" "-a" "f4bd745235620fede0e1255b42fee4712b626a4b8d5670507eb1e4cc246f473f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4bd745235620fede0e1255b42fee4712b626a4b8d5670507eb1e4cc246f473f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4bd745235620fede0e1255b42fee4712b626a4b8d5670507eb1e4cc246f473f", kill_on_drop: false }`
[INFO] [stdout] f4bd745235620fede0e1255b42fee4712b626a4b8d5670507eb1e4cc246f473f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+667247db71ea18c4130dd018d060e7f09d589490" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f0a4dac8cc98c6b411bca4597617feceecc45598d935fa4809fd3cce8655299
[INFO] running `Command { std: "docker" "start" "-a" "4f0a4dac8cc98c6b411bca4597617feceecc45598d935fa4809fd3cce8655299", kill_on_drop: false }`
[INFO] [stderr]     Checking lingangu_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `AtomicBool` and `Ordering`
[INFO] [stdout]  --> src/utils.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::{arch::asm, ops::Rem, sync::atomic::{AtomicBool, Ordering}};
[INFO] [stdout]   |                                                ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `UART`, `get_hartid`, `get_time`, `print_num`, and `sadge_delay`
[INFO] [stdout]  --> src/main.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use utils::{delay, get_hartid, get_time, print, print_num, sadge_delay, UART};
[INFO] [stdout]   |                    ^^^^^^^^^^  ^^^^^^^^         ^^^^^^^^^  ^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ordering`
[INFO] [stdout]  --> src/main.rs:8:56
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::{panic::PanicInfo, sync::atomic::{AtomicU64, Ordering}};
[INFO] [stdout]   |                                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lingangu_os` (bin "lingangu_os") due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4f0a4dac8cc98c6b411bca4597617feceecc45598d935fa4809fd3cce8655299", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f0a4dac8cc98c6b411bca4597617feceecc45598d935fa4809fd3cce8655299", kill_on_drop: false }`
[INFO] [stdout] 4f0a4dac8cc98c6b411bca4597617feceecc45598d935fa4809fd3cce8655299