[INFO] cloning repository https://github.com/bluesbus/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/bluesbus/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluesbus%2Frust-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluesbus%2Frust-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 54e2e2b7c9af5550b9ebd20a3656108db5608121
[INFO] checking bluesbus/rust-os against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluesbus%2Frust-os" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/bluesbus/rust-os
[INFO] finished tweaking git repo https://github.com/bluesbus/rust-os
[INFO] tweaked toml for git repo https://github.com/bluesbus/rust-os written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bluesbus/rust-os on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bluesbus/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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 646a75f6555e3ffe737534cfec3b6bacb92fade9204fcb80538b80ab2433fd2c
[INFO] running `Command { std: "docker" "start" "-a" "646a75f6555e3ffe737534cfec3b6bacb92fade9204fcb80538b80ab2433fd2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "646a75f6555e3ffe737534cfec3b6bacb92fade9204fcb80538b80ab2433fd2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "646a75f6555e3ffe737534cfec3b6bacb92fade9204fcb80538b80ab2433fd2c", kill_on_drop: false }`
[INFO] [stdout] 646a75f6555e3ffe737534cfec3b6bacb92fade9204fcb80538b80ab2433fd2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 354f342931e21a8c178e05103ece52fa2efb7647e9e91f9fed486b245605be65
[INFO] running `Command { std: "docker" "start" "-a" "354f342931e21a8c178e05103ece52fa2efb7647e9e91f9fed486b245605be65", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.29
[INFO] [stderr]     Checking rust-os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 15 | |     loop {}
[INFO] [stdout] 16 | | }
[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/a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-54e42b35ab65fe3c.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rust_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 `rust-os` (bin "rust-os" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: constant `BUFFER_HEIGHT` is never used
[INFO] [stdout]   --> src/vga_buffer.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 | const BUFFER_HEIGHT: usize = 25;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BUFFER_WIDTH` is never used
[INFO] [stdout]   --> src/vga_buffer.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 | const BUFFER_WIDTH: usize = 80;
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ColorCode` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct ColorCode(u8);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ScreenChar` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct ScreenChar {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Buffer` is never constructed
[INFO] [stdout]   --> src/vga_buffer.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | struct Buffer {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/vga_buffer.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl ColorCode {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 45 |     fn new(foreground: Color, background: Color) -> ColorCode {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "354f342931e21a8c178e05103ece52fa2efb7647e9e91f9fed486b245605be65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "354f342931e21a8c178e05103ece52fa2efb7647e9e91f9fed486b245605be65", kill_on_drop: false }`
[INFO] [stdout] 354f342931e21a8c178e05103ece52fa2efb7647e9e91f9fed486b245605be65
