[INFO] cloning repository https://github.com/amr0khaled/lim-kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amr0khaled/lim-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famr0khaled%2Flim-kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famr0khaled%2Flim-kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82464840c0300c5b55e59dce7064652c35000bdf
[INFO] checking amr0khaled/lim-kernel against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famr0khaled%2Flim-kernel" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/amr0khaled/lim-kernel
[INFO] finished tweaking git repo https://github.com/amr0khaled/lim-kernel
[INFO] tweaked toml for git repo https://github.com/amr0khaled/lim-kernel written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/amr0khaled/lim-kernel on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/amr0khaled/lim-kernel 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" "+416264364aa47959f5827723e1d7dabc95d0744b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking amr0khaled/lim-kernel against 416264364aa47959f5827723e1d7dabc95d0744b for pr-162242
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famr0khaled%2Flim-kernel" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/amr0khaled/lim-kernel
[INFO] finished tweaking git repo https://github.com/amr0khaled/lim-kernel
[INFO] tweaked toml for git repo https://github.com/amr0khaled/lim-kernel written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/amr0khaled/lim-kernel on toolchain 416264364aa47959f5827723e1d7dabc95d0744b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/amr0khaled/lim-kernel 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" "+416264364aa47959f5827723e1d7dabc95d0744b" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae
[INFO] running `Command { std: "docker" "start" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae" "/opt/rustwide/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae" "/opt/rustwide/cargo-home/bin/cargo" "+416264364aa47959f5827723e1d7dabc95d0744b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking kernel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::ptr::NonNull`
[INFO] [stdout]  --> src/drivers/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::ptr::NonNull;
[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: `crate::drivers::vga::Vga`
[INFO] [stdout]  --> src/drivers/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::drivers::vga::Vga;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::NonNull`
[INFO] [stdout]  --> src/drivers/vga/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::ptr::NonNull;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::panic::PanicInfo`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use core::panic::PanicInfo;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vga_buffer`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let vga_buffer = 0xb8000 as *mut u16;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vga_buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `addr` is never read
[INFO] [stdout]  --> src/drivers/vga/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Vga {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 4 |     addr: u32,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `print` is never used
[INFO] [stdout]  --> src/drivers/vga/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait GUI {
[INFO] [stdout]   |           --- associated function in this trait
[INFO] [stdout] 8 |     fn print(string: &[u8], color: u16);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IDTEntry` is never constructed
[INFO] [stdout]  --> src/internal/interrupts.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct IDTEntry {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `USER_CODE_SEGMENT`, `KERNEL_CODE_SEGMENT`, `new`, `new_kernel_handler`, and `new_user_handler` are never used
[INFO] [stdout]   --> src/internal/interrupts.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl IDTEntry {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 11 |     pub const USER_CODE_SEGMENT: u16 = 0x18;
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     pub const KERNEL_CODE_SEGMENT: u16 = 0x8;
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     fn new(present: bool, ring: u8, extended_size: bool, segment: u16) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn new_kernel_handler() -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn new_user_handler() -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IDT` is never constructed
[INFO] [stdout]   --> src/internal/interrupts.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IDT {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InterruptStack` is never constructed
[INFO] [stdout]  --> src/internal/io.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct InterruptStack {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal/io.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl InterruptStack {
[INFO] [stdout]    | ------------------- associated function in this implementation
[INFO] [stdout] 11 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_interrupt_stack` is never used
[INFO] [stdout]   --> src/internal/io.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_interrupt_stack(stack: &mut InterruptStack) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::NonNull`
[INFO] [stdout]  --> src/drivers/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::ptr::NonNull;
[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: `crate::drivers::vga::Vga`
[INFO] [stdout]  --> src/drivers/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::drivers::vga::Vga;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::NonNull`
[INFO] [stdout]  --> src/drivers/vga/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::ptr::NonNull;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vga_buffer`
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let vga_buffer = 0xb8000 as *mut u16;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vga_buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `addr` is never read
[INFO] [stdout]  --> src/drivers/vga/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Vga {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] 4 |     addr: u32,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `print` is never used
[INFO] [stdout]  --> src/drivers/vga/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait GUI {
[INFO] [stdout]   |           --- associated function in this trait
[INFO] [stdout] 8 |     fn print(string: &[u8], color: u16);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IDTEntry` is never constructed
[INFO] [stdout]  --> src/internal/interrupts.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct IDTEntry {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `USER_CODE_SEGMENT`, `KERNEL_CODE_SEGMENT`, `new`, `new_kernel_handler`, and `new_user_handler` are never used
[INFO] [stdout]   --> src/internal/interrupts.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl IDTEntry {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 11 |     pub const USER_CODE_SEGMENT: u16 = 0x18;
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     pub const KERNEL_CODE_SEGMENT: u16 = 0x8;
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     fn new(present: bool, ring: u8, extended_size: bool, segment: u16) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn new_kernel_handler() -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn new_user_handler() -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IDT` is never constructed
[INFO] [stdout]   --> src/internal/interrupts.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct IDT {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InterruptStack` is never constructed
[INFO] [stdout]  --> src/internal/io.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct InterruptStack {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/internal/io.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl InterruptStack {
[INFO] [stdout]    | ------------------- associated function in this implementation
[INFO] [stdout] 11 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_interrupt_stack` is never used
[INFO] [stdout]   --> src/internal/io.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_interrupt_stack(stack: &mut InterruptStack) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae", kill_on_drop: false }`
[INFO] [stdout] 96629dfed605e0fcae569ac5bbf42d8cb5d710ea5ffb526e1cb9c49b56c032ae
