[INFO] cloning repository https://github.com/chuigda/Pr24
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chuigda/Pr24" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchuigda%2FPr24", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchuigda%2FPr24'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b6446c3fbba242941d75fa3f333e84622c09a1b
[INFO] documenting chuigda/Pr24 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%2Fchuigda%2FPr24" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chuigda/Pr24 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-5/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/chuigda/Pr24
[INFO] finished tweaking git repo https://github.com/chuigda/Pr24
[INFO] tweaked toml for git repo https://github.com/chuigda/Pr24 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/chuigda/Pr24 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]  Downloading crates ...
[INFO] [stderr]   Downloaded bootloader v0.9.22
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded volatile v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a52d97da27ca55bb20a5a05a6b4012029447089e8728d1c0b5ff9f50a1bfca0
[INFO] running `Command { std: "docker" "start" "-a" "6a52d97da27ca55bb20a5a05a6b4012029447089e8728d1c0b5ff9f50a1bfca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a52d97da27ca55bb20a5a05a6b4012029447089e8728d1c0b5ff9f50a1bfca0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a52d97da27ca55bb20a5a05a6b4012029447089e8728d1c0b5ff9f50a1bfca0", kill_on_drop: false }`
[INFO] [stdout] 6a52d97da27ca55bb20a5a05a6b4012029447089e8728d1c0b5ff9f50a1bfca0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 261dd07eab3f70b732fbef60b05f26efd2c717593834038de00ed0e6d977515e
[INFO] running `Command { std: "docker" "start" "-a" "261dd07eab3f70b732fbef60b05f26efd2c717593834038de00ed0e6d977515e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.22
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lock_api v0.4.7
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]  Documenting pr24 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(panic_info_message)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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 `pr24`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name pr24 src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a53d595cd24444e3 -L dependency=/opt/rustwide/target/debug/deps --extern bootloader=/opt/rustwide/target/debug/deps/libbootloader-6f0b3af66880b478.rmeta --extern spin=/opt/rustwide/target/debug/deps/libspin-218645d374f4a470.rmeta --extern volatile=/opt/rustwide/target/debug/deps/libvolatile-256cf0a39cb7f25d.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "261dd07eab3f70b732fbef60b05f26efd2c717593834038de00ed0e6d977515e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "261dd07eab3f70b732fbef60b05f26efd2c717593834038de00ed0e6d977515e", kill_on_drop: false }`
[INFO] [stdout] 261dd07eab3f70b732fbef60b05f26efd2c717593834038de00ed0e6d977515e