[INFO] cloning repository https://github.com/Asciugano/os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Asciugano/os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAsciugano%2Fos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAsciugano%2Fos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7b1a351943f2c2d40e4a7c87de397588e027eee
[INFO] checking Asciugano/os against master#c8a31b780d5415358566a20b94912620a3f27067 for pr-139493-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAsciugano%2Fos" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Asciugano/os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/Asciugano/os
[INFO] tweaked toml for git repo https://github.com/Asciugano/os written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Asciugano/os on toolchain c8a31b780d5415358566a20b94912620a3f27067
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8a31b780d5415358566a20b94912620a3f27067" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Asciugano/os 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" "+c8a31b780d5415358566a20b94912620a3f27067" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pic8259 v0.10.4
[INFO] [stderr]   Downloaded spinning_top v0.2.5
[INFO] [stderr]   Downloaded uart_16550 v0.2.19
[INFO] [stderr]   Downloaded conquer-once v0.2.1
[INFO] [stderr]   Downloaded x86_64 v0.14.13
[INFO] [stderr]   Downloaded bootloader v0.9.32
[INFO] [stderr]   Downloaded conquer-util v0.2.0
[INFO] [stderr]   Downloaded volatile v0.4.6
[INFO] [stderr]   Downloaded linked_list_allocator v0.9.1
[INFO] [stderr]   Downloaded pc-keyboard v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c8a31b780d5415358566a20b94912620a3f27067" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e650a17de4caef0bced5ce87efa085af8aabad36673b457dafe7ed9fe2b07a1
[INFO] running `Command { std: "docker" "start" "-a" "6e650a17de4caef0bced5ce87efa085af8aabad36673b457dafe7ed9fe2b07a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e650a17de4caef0bced5ce87efa085af8aabad36673b457dafe7ed9fe2b07a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e650a17de4caef0bced5ce87efa085af8aabad36673b457dafe7ed9fe2b07a1", kill_on_drop: false }`
[INFO] [stdout] 6e650a17de4caef0bced5ce87efa085af8aabad36673b457dafe7ed9fe2b07a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c8a31b780d5415358566a20b94912620a3f27067" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23363746101c90d5fbf1d9d4e0a4736dc98c44688e16584642e379cb15c6d616
[INFO] running `Command { std: "docker" "start" "-a" "23363746101c90d5fbf1d9d4e0a4736dc98c44688e16584642e379cb15c6d616", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]     Checking bitflags v2.9.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]    Compiling bootloader v0.9.32
[INFO] [stderr]     Checking conquer-util v0.2.0
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking pc-keyboard v0.7.0
[INFO] [stderr]     Checking conquer-once v0.2.1
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking x86_64 v0.14.13
[INFO] [stderr]     Checking spinning_top v0.2.5
[INFO] [stderr]     Checking linked_list_allocator v0.9.1
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking pic8259 v0.10.4
[INFO] [stderr]     Checking uart_16550 v0.2.19
[INFO] [stderr]     Checking os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `alloc::Layout`
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::{alloc::Layout, panic::PanicInfo};
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linked_list::LinkedListAllocator`
[INFO] [stdout]   --> src/allocator.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use linked_list::LinkedListAllocator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `spin::Mutex`
[INFO] [stdout]  --> src/interrupts.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use spin::Mutex;
[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 import: `alloc::Layout`
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | use core::{alloc::Layout, panic::PanicInfo};
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linked_list::LinkedListAllocator`
[INFO] [stdout]   --> src/allocator.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use linked_list::LinkedListAllocator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `spin::Mutex`
[INFO] [stdout]  --> src/interrupts.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use spin::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/syscall.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             crate::scheduler::exit_current(code);
[INFO] [stdout]    |             ------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 30 |             0
[INFO] [stdout]    |             ^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/syscall.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             crate::scheduler::exit_current(code);
[INFO] [stdout]    |             ------------------------------------ any code following this expression is unreachable
[INFO] [stdout] 30 |             0
[INFO] [stdout]    |             ^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os` (lib test) due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/allocator.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn lock(&self) -> spin::MutexGuard<A> {
[INFO] [stdout]    |                 ^^^^^     ^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn lock(&self) -> spin::MutexGuard<'_, A> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "23363746101c90d5fbf1d9d4e0a4736dc98c44688e16584642e379cb15c6d616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23363746101c90d5fbf1d9d4e0a4736dc98c44688e16584642e379cb15c6d616", kill_on_drop: false }`
[INFO] [stdout] 23363746101c90d5fbf1d9d4e0a4736dc98c44688e16584642e379cb15c6d616
