[INFO] cloning repository https://github.com/nastiashyn/os_lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nastiashyn/os_lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnastiashyn%2Fos_lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnastiashyn%2Fos_lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23fe763f0c189c70d3cd72db69690851d8671674
[INFO] checking nastiashyn/os_lab against try#79452e8441468c5568c20bfca2aa1fe75b645b2d for pr-152210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnastiashyn%2Fos_lab" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/nastiashyn/os_lab
[INFO] finished tweaking git repo https://github.com/nastiashyn/os_lab
[INFO] tweaked toml for git repo https://github.com/nastiashyn/os_lab written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nastiashyn/os_lab on toolchain 79452e8441468c5568c20bfca2aa1fe75b645b2d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nastiashyn/os_lab 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" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 652a8a3eb08429c121a2f9a82caa95062998d9b6b6b9b12eb264b2a83e5e3ff4
[INFO] running `Command { std: "docker" "start" "-a" "652a8a3eb08429c121a2f9a82caa95062998d9b6b6b9b12eb264b2a83e5e3ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "652a8a3eb08429c121a2f9a82caa95062998d9b6b6b9b12eb264b2a83e5e3ff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "652a8a3eb08429c121a2f9a82caa95062998d9b6b6b9b12eb264b2a83e5e3ff4", kill_on_drop: false }`
[INFO] [stdout] 652a8a3eb08429c121a2f9a82caa95062998d9b6b6b9b12eb264b2a83e5e3ff4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+79452e8441468c5568c20bfca2aa1fe75b645b2d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba5667716eb097e3f01cb21685b64ebce8ac0177680bf2c3fc990159e755b74a
[INFO] running `Command { std: "docker" "start" "-a" "ba5667716eb097e3f01cb21685b64ebce8ac0177680bf2c3fc990159e755b74a", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.23
[INFO] [stderr]     Checking unios v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `White`
[INFO] [stdout]   --> src/main.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::vga_buf::Color::{Black, LightGreen, White};
[INFO] [stdout]    |                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `White`
[INFO] [stdout]   --> src/main.rs:12:48
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::vga_buf::Color::{Black, LightGreen, White};
[INFO] [stdout]    |                                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (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:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 17 | |     loop {}
[INFO] [stdout] 18 | | }
[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/79452e8441468c5568c20bfca2aa1fe75b645b2d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-957b1fe07cf96b13.rmeta
[INFO] [stdout]    = note: second definition in the local crate (`unios`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unios` (bin "unios" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variant `Left` is never constructed
[INFO] [stdout]   --> src/vga_buf.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum Alignment {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] 14 |     Left, 
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/vga_buf.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub enum Color {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 20 |     Black,      //0x0
[INFO] [stdout] 21 |     DarkBlue,   //0x1
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 22 |     Green,      //0x2
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 23 |     Blue,       //0x3
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 24 |     Red,        //0x4
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 25 |     Purple,     //0x5
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 26 |     Brown,      //0x6
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 27 |     LightGrey,  //0x7
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 28 |     DarkGrey,   //0x8
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 29 |     BrightBlue, //0x9
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     LightGreen, //0xa
[INFO] [stdout] 31 |     LightBlue,  //0xb
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 32 |     LightRed,   //0xc
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 33 |     Pink,       //0xd
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 34 |     Yellow,     //0xe
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 35 |     White       //0xf
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_hello_world` is never used
[INFO] [stdout]    --> src/vga_buf.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout]  57 | impl Screen {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 103 |     pub fn print_hello_world(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ba5667716eb097e3f01cb21685b64ebce8ac0177680bf2c3fc990159e755b74a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba5667716eb097e3f01cb21685b64ebce8ac0177680bf2c3fc990159e755b74a", kill_on_drop: false }`
[INFO] [stdout] ba5667716eb097e3f01cb21685b64ebce8ac0177680bf2c3fc990159e755b74a
