[INFO] updating cached repository https://github.com/funemy/rust-os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0fdcd30f9bef0f934824778d5ecc41ebf697a7af
[INFO] checking funemy/rust-os against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunemy%2Frust-os" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/funemy/rust-os on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/funemy/rust-os
[INFO] finished tweaking git repo https://github.com/funemy/rust-os
[INFO] tweaked toml for git repo https://github.com/funemy/rust-os written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/funemy/rust-os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a9a2c01d449425980a11f060fccd351755e3ba7baed4803cbfd63430c8a714f0
[INFO] running `"docker" "start" "-a" "a9a2c01d449425980a11f060fccd351755e3ba7baed4803cbfd63430c8a714f0"`
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking font8x8 v0.2.4
[INFO] [stderr]     Checking cpuio v0.2.0
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking pc-keyboard v0.3.1
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking libm v0.1.2
[INFO] [stderr]    Compiling getopts v0.2.18
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]     Checking array-init v0.0.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking pic8259_simple v0.1.1
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stderr]    Compiling bootloader v0.6.0
[INFO] [stderr]    Compiling pulldown-cmark v0.0.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking x86_64 v0.3.6
[INFO] [stderr]     Checking x86_64 v0.6.0
[INFO] [stderr]     Checking yzos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `ceil`
[INFO] [stderr]  --> src/frame_allocator.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | use libm::{ceil, floor, log2, log2f};
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::println`
[INFO] [stderr]   --> src/frame_allocator.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 | use crate::println;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ceil`
[INFO] [stderr]  --> src/frame_allocator.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | use libm::{ceil, floor, log2, log2f};
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::println`
[INFO] [stderr]   --> src/frame_allocator.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 | use crate::println;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |         use std::boxed::Box;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `frame`
[INFO] [stderr]   --> src/memory.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn deallocate_frame(&mut self, frame: PhysFrame<Size4KiB>) {
[INFO] [stderr]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frame_allocator.rs:158:21
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 let mut frame_idx = unsafe { (*free_node).content };
[INFO] [stderr]     |                     ----^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/context.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn default() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 28 |             ..Default::default()
[INFO] [stderr]    |               ------------------ recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/process.rs:56:46
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let page_table_ptr: *mut PageTable = unsafe { cr3_virt.as_mut_ptr() };
[INFO] [stderr]    |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `yzos::context::Context`
[INFO] [stderr]    --> src/main.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 | use yzos::context::Context;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `frame`
[INFO] [stderr]   --> src/memory.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn deallocate_frame(&mut self, frame: PhysFrame<Size4KiB>) {
[INFO] [stderr]    |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_frame`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: found duplicate lang item `oom`
[INFO] [stderr]   --> src/main.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | / fn alloc_error_handler(layout: Layout) -> ! {
[INFO] [stderr] 64 | |     println!("{:?}", layout);
[INFO] [stderr] 65 | |     panic!("Allocation Error");
[INFO] [stderr] 66 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the lang item is first defined in crate `std` (which `yzos` depends on)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frame_allocator.rs:158:21
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 let mut frame_idx = unsafe { (*free_node).content };
[INFO] [stderr]     |                     ----^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/context.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn default() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 28 |             ..Default::default()
[INFO] [stderr]    |               ------------------ recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `yzos`.
[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] [stderr] error: could not compile `yzos`.
[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] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/process.rs:56:46
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let page_table_ptr: *mut PageTable = unsafe { cr3_virt.as_mut_ptr() };
[INFO] [stderr]    |                                              ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a9a2c01d449425980a11f060fccd351755e3ba7baed4803cbfd63430c8a714f0"`
[INFO] running `"docker" "rm" "-f" "a9a2c01d449425980a11f060fccd351755e3ba7baed4803cbfd63430c8a714f0"`
[INFO] [stdout] a9a2c01d449425980a11f060fccd351755e3ba7baed4803cbfd63430c8a714f0
