[INFO] cloning repository https://github.com/NickSchmitt/RustOS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NickSchmitt/RustOS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickSchmitt%2FRustOS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickSchmitt%2FRustOS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ae9915f7e01bd987e3d0c985bace88d74741fa8
[INFO] checking NickSchmitt/RustOS against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickSchmitt%2FRustOS" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NickSchmitt/RustOS on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/NickSchmitt/RustOS
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/NickSchmitt/RustOS
[INFO] tweaked toml for git repo https://github.com/NickSchmitt/RustOS written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/NickSchmitt/RustOS already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pc-keyboard v0.5.1
[INFO] [stderr]   Downloaded spinning_top v0.1.1
[INFO] [stderr]   Downloaded cpuio v0.3.0
[INFO] [stderr]   Downloaded bootloader v0.9.12
[INFO] [stderr]   Downloaded linked_list_allocator v0.8.11
[INFO] [stderr]   Downloaded x86_64 v0.13.2
[INFO] [stderr]   Downloaded volatile v0.2.7
[INFO] [stderr]   Downloaded pic8259_simple v0.2.0
[INFO] [stderr]   Downloaded uart_16550 v0.2.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca0f225c8e1e520837585a7b8900debf21b9f158c36e61253377c5fd892e8216
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ca0f225c8e1e520837585a7b8900debf21b9f158c36e61253377c5fd892e8216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca0f225c8e1e520837585a7b8900debf21b9f158c36e61253377c5fd892e8216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca0f225c8e1e520837585a7b8900debf21b9f158c36e61253377c5fd892e8216", kill_on_drop: false }`
[INFO] [stdout] ca0f225c8e1e520837585a7b8900debf21b9f158c36e61253377c5fd892e8216
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba3321bdfe6f880606393329dd64b3347df5584cd7c16e6ba0a6df2f00bac011
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba3321bdfe6f880606393329dd64b3347df5584cd7c16e6ba0a6df2f00bac011", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.13.2
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]    Compiling bootloader v0.9.12
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking cpuio v0.3.0
[INFO] [stderr]     Checking pc-keyboard v0.5.1
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking pic8259_simple v0.2.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking spinning_top v0.1.1
[INFO] [stderr]     Checking linked_list_allocator v0.8.11
[INFO] [stderr]     Checking uart_16550 v0.2.12
[INFO] [stderr]     Checking blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blog_os`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/allocator/linked_list.rs:16:39
[INFO] [stdout]    |
[INFO] [stdout] 16 |     unsafe fn add_free_region(&mut self, addr: usize, size:usize){
[INFO] [stdout]    |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/allocator/linked_list.rs:16:52
[INFO] [stdout]    |
[INFO] [stdout] 16 |     unsafe fn add_free_region(&mut self, addr: usize, size:usize){
[INFO] [stdout]    |                                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `head`
[INFO] [stdout]  --> src/allocator/linked_list.rs:2:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |     head: ListNode,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]   --> src/allocator/linked_list.rs:23:2
[INFO] [stdout]    |
[INFO] [stdout] 23 |     size: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next`
[INFO] [stdout]   --> src/allocator/linked_list.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 24 |     next: Option<&'static mut ListNode>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_addr`
[INFO] [stdout]   --> src/allocator/linked_list.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn start_addr(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `end_addr`
[INFO] [stdout]   --> src/allocator/linked_list.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn end_addr(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ba3321bdfe6f880606393329dd64b3347df5584cd7c16e6ba0a6df2f00bac011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba3321bdfe6f880606393329dd64b3347df5584cd7c16e6ba0a6df2f00bac011", kill_on_drop: false }`
[INFO] [stdout] ba3321bdfe6f880606393329dd64b3347df5584cd7c16e6ba0a6df2f00bac011