[INFO] cloning repository https://github.com/jonathonw/crusty_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathonw/crusty_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathonw%2Fcrusty_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathonw%2Fcrusty_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8aa1c91c339f478da1a2b7543d41b0b09e8a2125
[INFO] checking jonathonw/crusty_os against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonathonw%2Fcrusty_os" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/jonathonw/crusty_os
[INFO] finished tweaking git repo https://github.com/jonathonw/crusty_os
[INFO] tweaked toml for git repo https://github.com/jonathonw/crusty_os written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jonathonw/crusty_os on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jonathonw/crusty_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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93b2aaa9430a6191617dfc9a22708a809738b942a25cd3326675675059c00e76
[INFO] running `Command { std: "docker" "start" "-a" "93b2aaa9430a6191617dfc9a22708a809738b942a25cd3326675675059c00e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93b2aaa9430a6191617dfc9a22708a809738b942a25cd3326675675059c00e76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93b2aaa9430a6191617dfc9a22708a809738b942a25cd3326675675059c00e76", kill_on_drop: false }`
[INFO] [stdout] 93b2aaa9430a6191617dfc9a22708a809738b942a25cd3326675675059c00e76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 294f2beb55ab199bdf2e286c0dab28d4ac651c472d0d9ed791c478785ed9f74e
[INFO] running `Command { std: "docker" "start" "-a" "294f2beb55ab199bdf2e286c0dab28d4ac651c472d0d9ed791c478785ed9f74e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.22
[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 crusty_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     panic!("Some panic message");
[INFO] [stdout]    |     ---------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[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] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] 22 | |     use crate::vga_buffer::ColorCode;
[INFO] [stdout] 23 | |     use crate::vga_buffer::Color;
[INFO] [stdout] 24 | |     vga_buffer::WRITER.lock().change_color(ColorCode::new(Color::LightRed, Color::Black));
[INFO] [stdout] 25 | |     println!("{}", info);
[INFO] [stdout] 26 | |     loop {}
[INFO] [stdout] 27 | | }
[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/93086cfebfccb79083c59d0d3b2052944bba643c/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1ee7395f7ada8841.rmeta
[INFO] [stdout]    = note: second definition in the local crate (`crusty_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crusty_os` (bin "crusty_os" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "294f2beb55ab199bdf2e286c0dab28d4ac651c472d0d9ed791c478785ed9f74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "294f2beb55ab199bdf2e286c0dab28d4ac651c472d0d9ed791c478785ed9f74e", kill_on_drop: false }`
[INFO] [stdout] 294f2beb55ab199bdf2e286c0dab28d4ac651c472d0d9ed791c478785ed9f74e
