[INFO] cloning repository https://github.com/mikegedelman/rust-no-std-ice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikegedelman/rust-no-std-ice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikegedelman%2Frust-no-std-ice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikegedelman%2Frust-no-std-ice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45285be930b4329d4f0254149ca9f1b96c1a6ae8
[INFO] documenting mikegedelman/rust-no-std-ice 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%2Fmikegedelman%2Frust-no-std-ice" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikegedelman/rust-no-std-ice 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-2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mikegedelman/rust-no-std-ice
[INFO] finished tweaking git repo https://github.com/mikegedelman/rust-no-std-ice
[INFO] tweaked toml for git repo https://github.com/mikegedelman/rust-no-std-ice written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mikegedelman/rust-no-std-ice 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 217cfeae1176b87bd3c0f3b0d6324c1a615f1dc0059b76a86e3bf6753ec6ae76
[INFO] running `Command { std: "docker" "start" "-a" "217cfeae1176b87bd3c0f3b0d6324c1a615f1dc0059b76a86e3bf6753ec6ae76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "217cfeae1176b87bd3c0f3b0d6324c1a615f1dc0059b76a86e3bf6753ec6ae76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "217cfeae1176b87bd3c0f3b0d6324c1a615f1dc0059b76a86e3bf6753ec6ae76", kill_on_drop: false }`
[INFO] [stdout] 217cfeae1176b87bd3c0f3b0d6324c1a615f1dc0059b76a86e3bf6753ec6ae76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 0970a173188438b52333c3fa8fb97e917cde7387ba53de6a9f75049fd5f35d7e
[INFO] running `Command { std: "docker" "start" "-a" "0970a173188438b52333c3fa8fb97e917cde7387ba53de6a9f75049fd5f35d7e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking no_std_lib v0.0.1 (/opt/rustwide/workdir/no_std_lib)
[INFO] [stderr]  Documenting no_std_lib v0.0.1 (/opt/rustwide/workdir/no_std_lib)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> no_std_lib/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(lang_items)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> no_std_lib/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(lang_items)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0718]: `start` language item must be applied to a function with 1 generic argument
[INFO] [stdout]  --> no_std_lib/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[lang = "start"]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 | fn lang_start() {}
[INFO] [stdout]   |              - this function has 0 generic arguments
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0718.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `no_std_lib` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `no_std_lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name no_std_lib no_std_lib/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2178d72657a4f838 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0970a173188438b52333c3fa8fb97e917cde7387ba53de6a9f75049fd5f35d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0970a173188438b52333c3fa8fb97e917cde7387ba53de6a9f75049fd5f35d7e", kill_on_drop: false }`
[INFO] [stdout] 0970a173188438b52333c3fa8fb97e917cde7387ba53de6a9f75049fd5f35d7e