[INFO] cloning repository https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxiaozhuABCD1234%2F2026s-oscamp-base-exercise-xiaozhuABCD1234", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxiaozhuABCD1234%2F2026s-oscamp-base-exercise-xiaozhuABCD1234'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07d6c31c44391435ff19917a2c207ce76e9e930e
[INFO] checking xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234 against try#7dabc88a3b6768751847baeb49983f31ac5f20e2 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxiaozhuABCD1234%2F2026s-oscamp-base-exercise-xiaozhuABCD1234" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234
[INFO] finished tweaking git repo https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234
[INFO] tweaked toml for git repo https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234 on toolchain 7dabc88a3b6768751847baeb49983f31ac5f20e2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xiaozhuABCD1234/2026s-oscamp-base-exercise-xiaozhuABCD1234 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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.7.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8907e2a5ca29e79015bee7828ed3d11169dbe971330ece62ed5076179035156f
[INFO] running `Command { std: "docker" "start" "-a" "8907e2a5ca29e79015bee7828ed3d11169dbe971330ece62ed5076179035156f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8907e2a5ca29e79015bee7828ed3d11169dbe971330ece62ed5076179035156f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8907e2a5ca29e79015bee7828ed3d11169dbe971330ece62ed5076179035156f", kill_on_drop: false }`
[INFO] [stdout] 8907e2a5ca29e79015bee7828ed3d11169dbe971330ece62ed5076179035156f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ae474e2846733251891cc01b353ca3da594b2cf05620d477f7dea7ee7867337
[INFO] running `Command { std: "docker" "start" "-a" "0ae474e2846733251891cc01b353ca3da594b2cf05620d477f7dea7ee7867337", kill_on_drop: false }`
[INFO] [stderr]     Checking winnow v0.7.14
[INFO] [stderr]     Checking toml_write v0.1.2
[INFO] [stderr]     Checking process_pipe v0.1.0 (/opt/rustwide/workdir/exercises/01_concurrency_sync/04_process_pipe)
[INFO] [stderr]     Checking errno v0.3.14
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking socket2 v0.6.2
[INFO] [stderr]     Checking mio v1.1.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking filetime v0.2.27
[INFO] [stderr]     Checking pte_flags v0.1.0 (/opt/rustwide/workdir/exercises/06_page_table/01_pte_flags)
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]     Checking rwlock v0.1.0 (/opt/rustwide/workdir/exercises/03_os_concurrency/05_rwlock)
[INFO] [stderr]     Checking spinlock v0.1.0 (/opt/rustwide/workdir/exercises/03_os_concurrency/03_spinlock)
[INFO] [stderr]     Checking thread_spawn v0.1.0 (/opt/rustwide/workdir/exercises/01_concurrency_sync/01_thread_spawn)
[INFO] [stderr]     Checking multi_level_pt v0.1.0 (/opt/rustwide/workdir/exercises/06_page_table/03_multi_level_pt)
[INFO] [stdout] warning: unused import: `Stdout`
[INFO] [stdout]   --> exercises/01_concurrency_sync/04_process_pipe/src/lib.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::io::{self, Read, Stdout, Write};
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking atomic_counter v0.1.0 (/opt/rustwide/workdir/exercises/03_os_concurrency/01_atomic_counter)
[INFO] [stderr]     Checking inotify v0.9.6
[INFO] [stderr]     Checking atomic_ordering v0.1.0 (/opt/rustwide/workdir/exercises/03_os_concurrency/02_atomic_ordering)
[INFO] [stderr]     Checking tlb_sim v0.1.0 (/opt/rustwide/workdir/exercises/06_page_table/04_tlb_sim)
[INFO] [stderr]     Checking mem_primitives v0.1.0 (/opt/rustwide/workdir/exercises/02_no_std_dev/01_mem_primitives)
[INFO] [stderr]     Checking mutex_counter v0.1.0 (/opt/rustwide/workdir/exercises/01_concurrency_sync/02_mutex_counter)
[INFO] [stderr]     Checking signal-hook-registry v1.4.8
[INFO] [stderr]     Checking free_list_allocator v0.1.0 (/opt/rustwide/workdir/exercises/02_no_std_dev/03_free_list_allocator)
[INFO] [stderr]     Checking stack_coroutine v0.1.0 (/opt/rustwide/workdir/exercises/04_context_switch/01_stack_coroutine)
[INFO] [stderr]     Checking basic_future v0.1.0 (/opt/rustwide/workdir/exercises/05_async_programming/01_basic_future)
[INFO] [stderr]     Checking green_threads v0.1.0 (/opt/rustwide/workdir/exercises/04_context_switch/02_green_threads)
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> exercises/02_no_std_dev/03_free_list_allocator/src/lib.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let size = layout.size().max(core::mem::size_of::<FreeBlock>());
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heap_start` is never read
[INFO] [stdout]   --> exercises/02_no_std_dev/03_free_list_allocator/src/lib.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct FreeListAllocator {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 49 |     heap_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bump_allocator v0.1.0 (/opt/rustwide/workdir/exercises/02_no_std_dev/02_bump_allocator)
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking channel v0.1.0 (/opt/rustwide/workdir/exercises/01_concurrency_sync/03_channel)
[INFO] [stderr]     Checking fd_table v0.1.0 (/opt/rustwide/workdir/exercises/02_no_std_dev/05_fd_table)
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> exercises/02_no_std_dev/03_free_list_allocator/src/lib.rs:168:13
[INFO] [stdout]     |
[INFO] [stdout] 168 |         let size = layout.size().max(core::mem::size_of::<FreeBlock>());
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heap_start` is never read
[INFO] [stdout]   --> exercises/02_no_std_dev/03_free_list_allocator/src/lib.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct FreeListAllocator {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 49 |     heap_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdout`
[INFO] [stdout]   --> exercises/01_concurrency_sync/04_process_pipe/src/lib.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::io::{self, Read, Stdout, Write};
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking notify v6.1.1
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking syscall_wrapper v0.1.0 (/opt/rustwide/workdir/exercises/02_no_std_dev/04_syscall_wrapper)
[INFO] [stderr]     Checking spinlock_guard v0.1.0 (/opt/rustwide/workdir/exercises/03_os_concurrency/04_spinlock_guard)
[INFO] [stderr]     Checking signal-hook v0.3.18
[INFO] [stderr]     Checking page_table_walk v0.1.0 (/opt/rustwide/workdir/exercises/06_page_table/02_page_table_walk)
[INFO] [stderr]     Checking signal-hook-mio v0.2.5
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking tokio v1.49.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking toml_datetime v0.6.11
[INFO] [stderr]     Checking serde_spanned v0.6.9
[INFO] [stderr]     Checking toml_edit v0.22.27
[INFO] [stderr]     Checking toml v0.8.23
[INFO] [stderr]     Checking select_timeout v0.1.0 (/opt/rustwide/workdir/exercises/05_async_programming/04_select_timeout)
[INFO] [stderr]     Checking tokio_tasks v0.1.0 (/opt/rustwide/workdir/exercises/05_async_programming/02_tokio_tasks)
[INFO] [stderr]     Checking async_channel_ex v0.1.0 (/opt/rustwide/workdir/exercises/05_async_programming/03_async_channel)
[INFO] [stderr]     Checking oscamp-cli v0.1.0 (/opt/rustwide/workdir/cli)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `Command { std: "docker" "inspect" "0ae474e2846733251891cc01b353ca3da594b2cf05620d477f7dea7ee7867337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ae474e2846733251891cc01b353ca3da594b2cf05620d477f7dea7ee7867337", kill_on_drop: false }`
[INFO] [stdout] 0ae474e2846733251891cc01b353ca3da594b2cf05620d477f7dea7ee7867337
