[INFO] cloning repository https://github.com/BiscuitBobby/ruskos-problem-repo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BiscuitBobby/ruskos-problem-repo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiscuitBobby%2Fruskos-problem-repo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBiscuitBobby%2Fruskos-problem-repo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 727dd75845f2950b0dd53c7acf78e9f7c22b1f34
[INFO] documenting BiscuitBobby/ruskos-problem-repo 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%2FBiscuitBobby%2Fruskos-problem-repo" "/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] removed /workspace/builds/worker-4-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/BiscuitBobby/ruskos-problem-repo
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/BiscuitBobby/ruskos-problem-repo
[INFO] tweaked toml for git repo https://github.com/BiscuitBobby/ruskos-problem-repo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BiscuitBobby/ruskos-problem-repo 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/BiscuitBobby/ruskos-problem-repo 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] [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 bootloader v0.9.29
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a690d5d6b579726e77e045723b0217523f3a2cc83de821c0804fcbdf484a65dc
[INFO] running `Command { std: "docker" "start" "-a" "a690d5d6b579726e77e045723b0217523f3a2cc83de821c0804fcbdf484a65dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a690d5d6b579726e77e045723b0217523f3a2cc83de821c0804fcbdf484a65dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a690d5d6b579726e77e045723b0217523f3a2cc83de821c0804fcbdf484a65dc", kill_on_drop: false }`
[INFO] [stdout] a690d5d6b579726e77e045723b0217523f3a2cc83de821c0804fcbdf484a65dc
[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=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] 4bac1629d7907a44e24579a110f80ed756fc3bc0cd23ccbceffbefff78560af0
[INFO] running `Command { std: "docker" "start" "-a" "4bac1629d7907a44e24579a110f80ed756fc3bc0cd23ccbceffbefff78560af0", kill_on_drop: false }`
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]    Compiling bootloader v0.9.29
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking pc-keyboard v0.5.1
[INFO] [stderr]     Checking x86_64 v0.14.13
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/x86_64-0.14.13/src/lib.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "const_fn", feature(const_mut_refs))] // GDT add_entry()
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `const_mut_refs` has been stable since `1.83.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/x86_64-0.14.13/src/lib.rs:6:44
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "abi_x86_interrupt", feature(abi_x86_interrupt))]
[INFO] [stdout]   |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/x86_64-0.14.13/src/lib.rs:7:37
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![cfg_attr(feature = "step_trait", feature(step_trait))]
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `x86_64` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4bac1629d7907a44e24579a110f80ed756fc3bc0cd23ccbceffbefff78560af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bac1629d7907a44e24579a110f80ed756fc3bc0cd23ccbceffbefff78560af0", kill_on_drop: false }`
[INFO] [stdout] 4bac1629d7907a44e24579a110f80ed756fc3bc0cd23ccbceffbefff78560af0
