[INFO] cloning repository https://github.com/mazi233/blog_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mazi233/blog_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmazi233%2Fblog_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmazi233%2Fblog_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 541cbcdcea98dfc7b28f1906733b7a89f6c0afc4
[INFO] testing mazi233/blog_os against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmazi233%2Fblog_os" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mazi233/blog_os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/mazi233/blog_os
[INFO] tweaked toml for git repo https://github.com/mazi233/blog_os written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mazi233/blog_os on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mazi233/blog_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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dab8b76e808212405f67d294556296163a6acb84f9dd8377a0c35aef4526bcd8
[INFO] running `Command { std: "docker" "start" "-a" "dab8b76e808212405f67d294556296163a6acb84f9dd8377a0c35aef4526bcd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dab8b76e808212405f67d294556296163a6acb84f9dd8377a0c35aef4526bcd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dab8b76e808212405f67d294556296163a6acb84f9dd8377a0c35aef4526bcd8", kill_on_drop: false }`
[INFO] [stdout] dab8b76e808212405f67d294556296163a6acb84f9dd8377a0c35aef4526bcd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d31060194e7d3e810b571fdd83322bcff7989868ccec7094051d22639a01ccb7
[INFO] running `Command { std: "docker" "start" "-a" "d31060194e7d3e810b571fdd83322bcff7989868ccec7094051d22639a01ccb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling x86_64 v0.14.7
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling volatile v0.4.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling bootloader v0.9.21
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling pc-keyboard v0.5.1
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling spinning_top v0.2.4
[INFO] [stderr]    Compiling linked_list_allocator v0.9.1
[INFO] [stderr]    Compiling pic8259 v0.10.2
[INFO] [stderr]    Compiling uart_16550 v0.2.16
[INFO] [stderr]    Compiling blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: invalid signature for `extern "x86-interrupt"` function
[INFO] [stdout]    --> src/interrupts.rs:123:6
[INFO] [stdout]     |
[INFO] [stdout] 123 | ) -> ! {
[INFO] [stdout]     |      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: functions with the "custom" ABI cannot have a return type
[INFO] [stdout] help: remove the return type
[INFO] [stdout]    --> src/interrupts.rs:123:6
[INFO] [stdout]     |
[INFO] [stdout] 123 | ) -> ! {
[INFO] [stdout]     |      ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Mapper` and `Page`
[INFO] [stdout]  --> src/memory.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Page,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     PhysFrame,
[INFO] [stdout] 7 |     Mapper,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GlobalAlloc` and `Layout`
[INFO] [stdout]  --> src/allocator.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::alloc::{GlobalAlloc, Layout};
[INFO] [stdout]   |                    ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::ptr::null_mut`
[INFO] [stdout]  --> src/allocator.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::ptr::null_mut;
[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:43:3
[INFO] [stdout]    |
[INFO] [stdout] 43 |         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:38:42
[INFO] [stdout]    |
[INFO] [stdout] 38 |     use x86_64::instructions::segmentation::set_cs;
[INFO] [stdout]    |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blog_os` (lib) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d31060194e7d3e810b571fdd83322bcff7989868ccec7094051d22639a01ccb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d31060194e7d3e810b571fdd83322bcff7989868ccec7094051d22639a01ccb7", kill_on_drop: false }`
[INFO] [stdout] d31060194e7d3e810b571fdd83322bcff7989868ccec7094051d22639a01ccb7