[INFO] cloning repository https://github.com/AI21212019/m1mini_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AI21212019/m1mini_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAI21212019%2Fm1mini_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAI21212019%2Fm1mini_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e936ac6bc0aacd1580f5287ef7ba7a4b12e2b7c
[INFO] checking AI21212019/m1mini_os against master#e0e204f3e97ad5f79524b9c259dc38df606ed82c for pr-149218
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAI21212019%2Fm1mini_os" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/AI21212019/m1mini_os
[INFO] finished tweaking git repo https://github.com/AI21212019/m1mini_os
[INFO] tweaked toml for git repo https://github.com/AI21212019/m1mini_os written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AI21212019/m1mini_os on toolchain e0e204f3e97ad5f79524b9c259dc38df606ed82c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e0e204f3e97ad5f79524b9c259dc38df606ed82c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AI21212019/m1mini_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" "+e0e204f3e97ad5f79524b9c259dc38df606ed82c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile v0.2.7
[INFO] [stderr]   Downloaded bootloader v0.9.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+e0e204f3e97ad5f79524b9c259dc38df606ed82c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f19fc02b1f4d49a98e2572379873c61952b82537221853ffc5c9bdcfd008649
[INFO] running `Command { std: "docker" "start" "-a" "2f19fc02b1f4d49a98e2572379873c61952b82537221853ffc5c9bdcfd008649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f19fc02b1f4d49a98e2572379873c61952b82537221853ffc5c9bdcfd008649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f19fc02b1f4d49a98e2572379873c61952b82537221853ffc5c9bdcfd008649", kill_on_drop: false }`
[INFO] [stdout] 2f19fc02b1f4d49a98e2572379873c61952b82537221853ffc5c9bdcfd008649
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+e0e204f3e97ad5f79524b9c259dc38df606ed82c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e58c2fe10c83f1019919373ef8b62d3f4244728df2d04d3069e2e63aba81788
[INFO] running `Command { std: "docker" "start" "-a" "3e58c2fe10c83f1019919373ef8b62d3f4244728df2d04d3069e2e63aba81788", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.23
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking mini_os v0.1.0 (/opt/rustwide/workdir)
[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] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] 23 | |     println!("{}", info);
[INFO] [stdout] 24 | |     
[INFO] [stdout] 25 | |     loop {}
[INFO] [stdout] 26 | | }
[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/e0e204f3e97ad5f79524b9c259dc38df606ed82c/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-eb5e5b1ac38e128b.rlib
[INFO] [stdout]    = note: second definition in the local crate (`mini_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     panic!("Some panic message");
[INFO] [stdout]    |     ---------------------------- any code following this expression is unreachable
[INFO] [stdout] 15 |     
[INFO] [stdout] 16 |     loop {}
[INFO] [stdout]    |     ^^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mini_os` (bin "mini_os" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mini_os` (bin "mini_os") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3e58c2fe10c83f1019919373ef8b62d3f4244728df2d04d3069e2e63aba81788", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e58c2fe10c83f1019919373ef8b62d3f4244728df2d04d3069e2e63aba81788", kill_on_drop: false }`
[INFO] [stdout] 3e58c2fe10c83f1019919373ef8b62d3f4244728df2d04d3069e2e63aba81788
