[INFO] cloning repository https://github.com/gefjon/saturn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gefjon/saturn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fsaturn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fsaturn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25fba444c5bd7d1c1a68d483f504498b98ad3370
[INFO] documenting gefjon/saturn 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%2Fgefjon%2Fsaturn" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gefjon/saturn 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-23/source/.cargo/config
[INFO] started tweaking git repo https://github.com/gefjon/saturn
[INFO] finished tweaking git repo https://github.com/gefjon/saturn
[INFO] tweaked toml for git repo https://github.com/gefjon/saturn written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/gefjon/saturn 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded r0 v1.0.0
[INFO] [stderr]   Downloaded tock-registers v0.7.0
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded cortex-a v6.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 98bbc4964e9d6f83c1ba91cf11cc114fd02e224f10f13f779f9c6c5469fbdd56
[INFO] running `Command { std: "docker" "start" "-a" "98bbc4964e9d6f83c1ba91cf11cc114fd02e224f10f13f779f9c6c5469fbdd56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98bbc4964e9d6f83c1ba91cf11cc114fd02e224f10f13f779f9c6c5469fbdd56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98bbc4964e9d6f83c1ba91cf11cc114fd02e224f10f13f779f9c6c5469fbdd56", kill_on_drop: false }`
[INFO] [stdout] 98bbc4964e9d6f83c1ba91cf11cc114fd02e224f10f13f779f9c6c5469fbdd56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 1f5b7003d20f82148f9473451ba6dfd29d60ea1d9d2fd08de9b4f3d7a9ddc8ad
[INFO] running `Command { std: "docker" "start" "-a" "1f5b7003d20f82148f9473451ba6dfd29d60ea1d9d2fd08de9b4f3d7a9ddc8ad", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking tock-registers v0.7.0
[INFO] [stderr]     Checking r0 v1.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tock-registers-0.7.0/src/lib.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | #![feature(const_fn_trait_bound)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_fn_trait_bound` has been stable since 1.61.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tock-registers` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1f5b7003d20f82148f9473451ba6dfd29d60ea1d9d2fd08de9b4f3d7a9ddc8ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f5b7003d20f82148f9473451ba6dfd29d60ea1d9d2fd08de9b4f3d7a9ddc8ad", kill_on_drop: false }`
[INFO] [stdout] 1f5b7003d20f82148f9473451ba6dfd29d60ea1d9d2fd08de9b4f3d7a9ddc8ad