[INFO] cloning repository https://github.com/jayy-lmao/rust-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jayy-lmao/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayy-lmao%2Frust-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayy-lmao%2Frust-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f1d3918aa97ba89e83117f39430f1f921c5ed82
[INFO] documenting jayy-lmao/rust-os against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjayy-lmao%2Frust-os" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jayy-lmao/rust-os on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-30/source/.cargo/config
[INFO] removed /workspace/builds/worker-30/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/jayy-lmao/rust-os
[INFO] finished tweaking git repo https://github.com/jayy-lmao/rust-os
[INFO] tweaked toml for git repo https://github.com/jayy-lmao/rust-os written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/jayy-lmao/rust-os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bootloader v0.8.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b3c083b33197234a833d34adab8e9eb0c37f8246310cff754df8280012d1f16
[INFO] running `Command { std: "docker" "start" "-a" "6b3c083b33197234a833d34adab8e9eb0c37f8246310cff754df8280012d1f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b3c083b33197234a833d34adab8e9eb0c37f8246310cff754df8280012d1f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3c083b33197234a833d34adab8e9eb0c37f8246310cff754df8280012d1f16", kill_on_drop: false }`
[INFO] [stdout] 6b3c083b33197234a833d34adab8e9eb0c37f8246310cff754df8280012d1f16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d093bf88f7b9e28a1f381d03c7e63cb9fcb8527095e6425fa619a858e032192
[INFO] running `Command { std: "docker" "start" "-a" "8d093bf88f7b9e28a1f381d03c7e63cb9fcb8527095e6425fa619a858e032192", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.8.5
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]  Documenting blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(custom_test_frameworks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `blog_os`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name blog_os src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e2c6d1a8b504d34c -L dependency=/opt/rustwide/target/debug/deps --extern bootloader=/opt/rustwide/target/debug/deps/libbootloader-91f5bec8047b8d0c.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-80d755583cdf31de.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-9d6e24aa5a2758f7.rmeta --extern volatile=/opt/rustwide/target/debug/deps/libvolatile-8c740c9cb24f41af.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8d093bf88f7b9e28a1f381d03c7e63cb9fcb8527095e6425fa619a858e032192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d093bf88f7b9e28a1f381d03c7e63cb9fcb8527095e6425fa619a858e032192", kill_on_drop: false }`
[INFO] [stdout] 8d093bf88f7b9e28a1f381d03c7e63cb9fcb8527095e6425fa619a858e032192