[INFO] cloning repository https://github.com/0930mcx/OS-homework
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0930mcx/OS-homework" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0930mcx%2FOS-homework", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0930mcx%2FOS-homework'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 517645f53d6f10daa8d3af6a11fa36bbe1953613
[INFO] documenting 0930mcx/OS-homework against 1.91.0 for beta-1.92-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0930mcx%2FOS-homework" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/0930mcx/OS-homework
[INFO] finished tweaking git repo https://github.com/0930mcx/OS-homework
[INFO] tweaked toml for git repo https://github.com/0930mcx/OS-homework written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0930mcx/OS-homework on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0930mcx/OS-homework 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0be544a24999e577ef892c2f83319e86be23f0172d4989de92b46cc869321cc0
[INFO] running `Command { std: "docker" "start" "-a" "0be544a24999e577ef892c2f83319e86be23f0172d4989de92b46cc869321cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0be544a24999e577ef892c2f83319e86be23f0172d4989de92b46cc869321cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0be544a24999e577ef892c2f83319e86be23f0172d4989de92b46cc869321cc0", kill_on_drop: false }`
[INFO] [stdout] 0be544a24999e577ef892c2f83319e86be23f0172d4989de92b46cc869321cc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d7c8851a27b8b3371e286d7b48a7f22b6e5deba99a1ed4dac4f477bdd25047e
[INFO] running `Command { std: "docker" "start" "-a" "1d7c8851a27b8b3371e286d7b48a7f22b6e5deba99a1ed4dac4f477bdd25047e", kill_on_drop: false }`
[INFO] [stderr]  Documenting user_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking user_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(linkage)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(panic_info_message)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `x10`: unknown register
[INFO] [stdout]   --> src/syscall.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 |              in("x10") args[0],
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `x11`: unknown register
[INFO] [stdout]   --> src/syscall.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |              in("x11") args[1],
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `x12`: unknown register
[INFO] [stdout]   --> src/syscall.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |              in("x12") args[2],
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `x17`: unknown register
[INFO] [stdout]   --> src/syscall.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |              in("x17") id,
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid register `x10`: unknown register
[INFO] [stdout]   --> src/syscall.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |              lateout("x10") ret
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `panic_info_message` has been stable since 1.81.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(panic_info_message)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `PanicMessage<'a>` in the current scope
[INFO] [stdout]   --> src/lang_items.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 |             panic_info.message().unwrap());
[INFO] [stdout]    |                                  ^^^^^^ method not found in `PanicMessage<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for struct `PanicMessage<'a>` in the current scope
[INFO] [stdout]   --> src/lang_items.rs:12:55
[INFO] [stdout]    |
[INFO] [stdout] 12 |         println!("Panicked: {}", panic_info.message().unwrap());
[INFO] [stdout]    |                                                       ^^^^^^ method not found in `PanicMessage<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `user_lib` (lib) due to 9 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `user_lib`
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(linkage)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(panic_info_message)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1d7c8851a27b8b3371e286d7b48a7f22b6e5deba99a1ed4dac4f477bdd25047e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d7c8851a27b8b3371e286d7b48a7f22b6e5deba99a1ed4dac4f477bdd25047e", kill_on_drop: false }`
[INFO] [stdout] 1d7c8851a27b8b3371e286d7b48a7f22b6e5deba99a1ed4dac4f477bdd25047e
