[INFO] cloning repository https://github.com/JVKdouk/BuzzOS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JVKdouk/BuzzOS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJVKdouk%2FBuzzOS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJVKdouk%2FBuzzOS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b33a8df68f18787859f15f305666ddf917d5fbd4
[INFO] checking JVKdouk/BuzzOS against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJVKdouk%2FBuzzOS" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JVKdouk/BuzzOS on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/JVKdouk/BuzzOS
[INFO] finished tweaking git repo https://github.com/JVKdouk/BuzzOS
[INFO] tweaked toml for git repo https://github.com/JVKdouk/BuzzOS written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JVKdouk/BuzzOS 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" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-1-tc2/source/kernel/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32ec8b8b94a306ed2dde76dea4f5faf1a7f4ab912a2e7560f586a28edf5d84b8
[INFO] running `Command { std: "docker" "start" "-a" "32ec8b8b94a306ed2dde76dea4f5faf1a7f4ab912a2e7560f586a28edf5d84b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32ec8b8b94a306ed2dde76dea4f5faf1a7f4ab912a2e7560f586a28edf5d84b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32ec8b8b94a306ed2dde76dea4f5faf1a7f4ab912a2e7560f586a28edf5d84b8", kill_on_drop: false }`
[INFO] [stdout] 32ec8b8b94a306ed2dde76dea4f5faf1a7f4ab912a2e7560f586a28edf5d84b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37ec5c4ef5cf0d87a359bb5744240a4599084ce409994d89d9072223d7524c1e
[INFO] running `Command { std: "docker" "start" "-a" "37ec5c4ef5cf0d87a359bb5744240a4599084ce409994d89d9072223d7524c1e", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/kernel/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.65
[INFO] [stderr]    Compiling quote v1.0.30
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking buzz-os-kernel v0.1.0 (/opt/rustwide/workdir/kernel)
[INFO] [stdout] warning: unused imports: `String` and `ToString`
[INFO] [stdout]  --> kernel/src/debug/process.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                     ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cli` and `sti`
[INFO] [stdout]   --> kernel/src/debug/process.rs:12:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     x86::helpers::{cli, load_cr3, read_cr3, sti},
[INFO] [stdout]    |                    ^^^                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::ToString`
[INFO] [stdout]  --> kernel/src/interrupts/system_calls.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use alloc::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_path_filename`
[INFO] [stdout]  --> kernel/src/interrupts/system_calls.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 |     filesystem::fs::{find_inode_by_path, get_path_filename, setup_file_system},
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `scheduler::SCHEDULER` and `self`
[INFO] [stdout]   --> kernel/src/memory/vm.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |     scheduler::{self, scheduler::SCHEDULER},
[INFO] [stdout]    |                 ^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::String`
[INFO] [stdout]  --> kernel/src/scheduler/exec.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug::process::debug_elf`
[INFO] [stdout]  --> kernel/src/scheduler/exec.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     debug::process::debug_elf,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scheduler`
[INFO] [stdout]   --> kernel/src/scheduler/process.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         scheduler,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `println`
[INFO] [stdout]  --> kernel/src/scheduler/scheduler.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     println,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `String` and `ToString`
[INFO] [stdout]  --> kernel/src/debug/process.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                     ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cli` and `sti`
[INFO] [stdout]   --> kernel/src/debug/process.rs:12:20
[INFO] [stdout]    |
[INFO] [stdout] 12 |     x86::helpers::{cli, load_cr3, read_cr3, sti},
[INFO] [stdout]    |                    ^^^                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::ToString`
[INFO] [stdout]  --> kernel/src/interrupts/system_calls.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use alloc::string::ToString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `get_path_filename`
[INFO] [stdout]  --> kernel/src/interrupts/system_calls.rs:6:42
[INFO] [stdout]   |
[INFO] [stdout] 6 |     filesystem::fs::{find_inode_by_path, get_path_filename, setup_file_system},
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `scheduler::SCHEDULER` and `self`
[INFO] [stdout]   --> kernel/src/memory/vm.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |     scheduler::{self, scheduler::SCHEDULER},
[INFO] [stdout]    |                 ^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `alloc::string::String`
[INFO] [stdout]  --> kernel/src/scheduler/exec.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug::process::debug_elf`
[INFO] [stdout]  --> kernel/src/scheduler/exec.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     debug::process::debug_elf,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scheduler`
[INFO] [stdout]   --> kernel/src/scheduler/process.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         scheduler,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `println`
[INFO] [stdout]  --> kernel/src/scheduler/scheduler.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     println,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> kernel/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_mut_refs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pointer_byte_offsets` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> kernel/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(pointer_byte_offsets)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_mut_refs` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> kernel/src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_mut_refs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `pointer_byte_offsets` has been stable since 1.75.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> kernel/src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(pointer_byte_offsets)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> kernel/src/sync/spin_mutex.rs:70:25
[INFO] [stdout]    |
[INFO] [stdout] 70 |         while self.lock.compare_and_swap(false, true, Ordering::Acquire) != false {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> kernel/src/sync/spin_mutex.rs:97:22
[INFO] [stdout]    |
[INFO] [stdout] 97 |         if self.lock.compare_and_swap(false, true, Ordering::Acquire) == false {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]   --> kernel/src/x86/helpers.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |         asm!("pushfd; pop {}", out(reg) value, options(nostack, preserves_flags));
[INFO] [stdout]    |                           ^^            ----- for this argument
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]    = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]    = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot use register `bx`: rbx is used internally by LLVM and cannot be used as an operand for inline asm
[INFO] [stdout]    --> kernel/src/x86/helpers.rs:218:13
[INFO] [stdout]     |
[INFO] [stdout] 218 |             out("ebx") ebx,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> kernel/src/sync/spin_mutex.rs:70:25
[INFO] [stdout]    |
[INFO] [stdout] 70 |         while self.lock.compare_and_swap(false, true, Ordering::Acquire) != false {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> kernel/src/sync/spin_mutex.rs:97:22
[INFO] [stdout]    |
[INFO] [stdout] 97 |         if self.lock.compare_and_swap(false, true, Ordering::Acquire) == false {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]   --> kernel/src/x86/helpers.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |         asm!("pushfd; pop {}", out(reg) value, options(nostack, preserves_flags));
[INFO] [stdout]    |                           ^^            ----- for this argument
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]    = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]    = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot use register `bx`: rbx is used internally by LLVM and cannot be used as an operand for inline asm
[INFO] [stdout]    --> kernel/src/x86/helpers.rs:218:13
[INFO] [stdout]     |
[INFO] [stdout] 218 |             out("ebx") ebx,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cache`
[INFO] [stdout]   --> kernel/src/filesystem/cache.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let cache = block.lock();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_cache`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> kernel/src/filesystem/cache.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let list = CACHE_BLOCK_LIST.lock();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cache`
[INFO] [stdout]   --> kernel/src/filesystem/cache.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let cache = block.lock();
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_cache`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `list`
[INFO] [stdout]   --> kernel/src/filesystem/cache.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let list = CACHE_BLOCK_LIST.lock();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg2`
[INFO] [stdout]   --> kernel/src/interrupts/system_calls.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let arg2 = trapframe.ecx;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arg2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg2`
[INFO] [stdout]   --> kernel/src/interrupts/system_calls.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let arg2 = trapframe.ecx;
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_arg2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> kernel/src/scheduler/process.rs:310:13
[INFO] [stdout]     |
[INFO] [stdout] 310 |         let mut page_slice = page.cast_to::<u8>();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> kernel/src/scheduler/process.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |     let mut process = scheduler.current_process.as_ref().unwrap();
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> kernel/src/scheduler/process.rs:310:13
[INFO] [stdout]     |
[INFO] [stdout] 310 |         let mut page_slice = page.cast_to::<u8>();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> kernel/src/scheduler/process.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |     let mut process = scheduler.current_process.as_ref().unwrap();
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `buzz-os-kernel` (lib test) due to 2 previous errors; 19 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `buzz-os-kernel` (lib) due to 2 previous errors; 19 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "37ec5c4ef5cf0d87a359bb5744240a4599084ce409994d89d9072223d7524c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37ec5c4ef5cf0d87a359bb5744240a4599084ce409994d89d9072223d7524c1e", kill_on_drop: false }`
[INFO] [stdout] 37ec5c4ef5cf0d87a359bb5744240a4599084ce409994d89d9072223d7524c1e
