[INFO] cloning repository https://github.com/zsh-a/rust-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zsh-a/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzsh-a%2Frust-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzsh-a%2Frust-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a367d4cf528013b5733ddb0f77ce94bc22322115
[INFO] testing zsh-a/rust-os against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzsh-a%2Frust-os" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zsh-a/rust-os on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/zsh-a/rust-os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/zsh-a/rust-os
[INFO] tweaked toml for git repo https://github.com/zsh-a/rust-os written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/zsh-a/rust-os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pic8259 v0.10.1
[INFO] [stderr]   Downloaded linked_list_allocator v0.9.0
[INFO] [stderr]   Downloaded bootloader v0.9.18
[INFO] [stderr]   Downloaded uart_16550 v0.2.15
[INFO] [stderr]   Downloaded x86_64 v0.14.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f80c5114a0e6f7c3b352c18ddfb260a21e1ff6f2914f3614f0f75aa39c70d43d
[INFO] running `Command { std: "docker" "start" "-a" "f80c5114a0e6f7c3b352c18ddfb260a21e1ff6f2914f3614f0f75aa39c70d43d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80c5114a0e6f7c3b352c18ddfb260a21e1ff6f2914f3614f0f75aa39c70d43d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80c5114a0e6f7c3b352c18ddfb260a21e1ff6f2914f3614f0f75aa39c70d43d", kill_on_drop: false }`
[INFO] [stdout] f80c5114a0e6f7c3b352c18ddfb260a21e1ff6f2914f3614f0f75aa39c70d43d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66b7787bb949000eae96d5adb08d52082db9228a7ade4537a6cc53399ffbcc58
[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" "66b7787bb949000eae96d5adb08d52082db9228a7ade4537a6cc53399ffbcc58", 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] [stderr]    Compiling x86_64 v0.14.4
[INFO] [stderr]    Compiling volatile v0.4.4
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bootloader v0.9.18
[INFO] [stderr]    Compiling conquer-util v0.2.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling pc-keyboard v0.5.1
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling conquer-once v0.2.1
[INFO] [stderr]    Compiling spinning_top v0.2.4
[INFO] [stderr]    Compiling linked_list_allocator v0.9.0
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling pic8259 v0.10.1
[INFO] [stderr]    Compiling uart_16550 v0.2.15
[INFO] [stderr]    Compiling blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `write`
[INFO] [stdout]  --> src/vga_buffer.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::fmt::{self, write};
[INFO] [stdout]   |                       ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::NonNull`
[INFO] [stdout]  --> src/interrupts.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::ptr::NonNull;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DecodedKey`
[INFO] [stdout]   --> src/interrupts.rs:83:32
[INFO] [stdout]    |
[INFO] [stdout] 83 |     use pc_keyboard::{layouts, DecodedKey, HandleControl, Keyboard, ScancodeSet1};
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `bump::BumpAllocator`, `linked_list::LinkedListAllocator`
[INFO] [stdout]  --> src/allocator.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::{bump::BumpAllocator, fixed_size_block::FixedSizeBlockAllocator, linked_list::LinkedListAllocator};
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `println`, `serial_println`
[INFO] [stdout]  --> src/allocator/linked_list.rs:3:34
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{allocator::align_up, println, serial_println};
[INFO] [stdout]   |                                  ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `align_of`, `self`
[INFO] [stdout]  --> src/allocator/fixed_size_block.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::{alloc::GlobalAlloc, mem::{self, align_of}, ptr::{self, NonNull, null_mut}};
[INFO] [stdout]   |                                            ^^^^^^^^         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/task/executor.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     task::{self, Wake},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::interrupts`
[INFO] [stdout]   --> src/task/executor.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::interrupts;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `x86_64::instructions::segmentation::set_cs`: use `CS::set_reg()` instead
[INFO] [stdout]   --> src/gdt.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         set_cs(GDT.1.code_selector);
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `x86_64::instructions::segmentation::set_cs`: use `CS::set_reg()` instead
[INFO] [stdout]   --> src/gdt.rs:40:45
[INFO] [stdout]    |
[INFO] [stdout] 40 |     use x86_64::instructions::segmentation::set_cs;
[INFO] [stdout]    |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_frame`
[INFO] [stdout]   --> src/interrupts.rs:64:51
[INFO] [stdout]    |
[INFO] [stdout] 64 | extern "x86-interrupt" fn timer_interrupt_handler(stack_frame: InterruptStackFrame) {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_frame`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_frame`
[INFO] [stdout]   --> src/interrupts.rs:82:54
[INFO] [stdout]    |
[INFO] [stdout] 82 | extern "x86-interrupt" fn keyboard_interrupt_handler(stack_frame: InterruptStackFrame) {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> src/allocator.rs:51:28
[INFO] [stdout]    |
[INFO] [stdout] 51 |     unsafe fn alloc(&self, layout: core::alloc::Layout) -> *mut u8 {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/allocator.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: core::alloc::Layout) {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> src/allocator.rs:55:44
[INFO] [stdout]    |
[INFO] [stdout] 55 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: core::alloc::Layout) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ptr`
[INFO] [stdout]   --> src/allocator/bump.rs:45:30
[INFO] [stdout]    |
[INFO] [stdout] 45 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `layout`
[INFO] [stdout]   --> src/allocator/bump.rs:45:44
[INFO] [stdout]    |
[INFO] [stdout] 45 |     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
[INFO] [stdout]    |                                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_layout`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vec::Vec`
[INFO] [stdout]  --> src/main.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 | use alloc::{boxed::Box, vec, vec::Vec, rc::Rc};
[INFO] [stdout]   |                              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `print`, `simple_executor::SimpleExecutor`
[INFO] [stdout]   --> src/main.rs:10:52
[INFO] [stdout]    |
[INFO] [stdout] 10 | ...mory::{self}, print, println, task::{Task, executor::Executor, keyboard::print_keypress, simple_executor::SimpleExecutor}};
[INFO] [stdout]    |                  ^^^^^                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Mapper`, `Page`, `Translate`
[INFO] [stdout]   --> src/main.rs:12:45
[INFO] [stdout]    |
[INFO] [stdout] 12 | use x86_64::{VirtAddr, structures::paging::{Mapper, Page, Translate}};
[INFO] [stdout]    |                                             ^^^^^^  ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blog_os` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "66b7787bb949000eae96d5adb08d52082db9228a7ade4537a6cc53399ffbcc58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66b7787bb949000eae96d5adb08d52082db9228a7ade4537a6cc53399ffbcc58", kill_on_drop: false }`
[INFO] [stdout] 66b7787bb949000eae96d5adb08d52082db9228a7ade4537a6cc53399ffbcc58