[INFO] cloning repository https://github.com/BoxyUwU/TAIT-gcell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BoxyUwU/TAIT-gcell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBoxyUwU%2FTAIT-gcell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBoxyUwU%2FTAIT-gcell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b43f705c8f13f5efd02a62d93f239946166ebc1f
[INFO] documenting BoxyUwU/TAIT-gcell 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%2FBoxyUwU%2FTAIT-gcell" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BoxyUwU/TAIT-gcell 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] started tweaking git repo https://github.com/BoxyUwU/TAIT-gcell
[INFO] finished tweaking git repo https://github.com/BoxyUwU/TAIT-gcell
[INFO] tweaked toml for git repo https://github.com/BoxyUwU/TAIT-gcell written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/BoxyUwU/TAIT-gcell 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 542430dce66cc799a2be1d5bf9409cb9ab7fd2a8cd005ec45017da50317ecc5e
[INFO] running `Command { std: "docker" "start" "-a" "542430dce66cc799a2be1d5bf9409cb9ab7fd2a8cd005ec45017da50317ecc5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "542430dce66cc799a2be1d5bf9409cb9ab7fd2a8cd005ec45017da50317ecc5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "542430dce66cc799a2be1d5bf9409cb9ab7fd2a8cd005ec45017da50317ecc5e", kill_on_drop: false }`
[INFO] [stdout] 542430dce66cc799a2be1d5bf9409cb9ab7fd2a8cd005ec45017da50317ecc5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 52021b3e95236a303a3ea1a7f5071d7c6e07cf4f8fa32858b0657b834149fcdb
[INFO] running `Command { std: "docker" "start" "-a" "52021b3e95236a303a3ea1a7f5071d7c6e07cf4f8fa32858b0657b834149fcdb", kill_on_drop: false }`
[INFO] [stderr]     Checking gcell v0.1.0 (/opt/rustwide/workdir/gcell)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> gcell/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gcell` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "52021b3e95236a303a3ea1a7f5071d7c6e07cf4f8fa32858b0657b834149fcdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52021b3e95236a303a3ea1a7f5071d7c6e07cf4f8fa32858b0657b834149fcdb", kill_on_drop: false }`
[INFO] [stdout] 52021b3e95236a303a3ea1a7f5071d7c6e07cf4f8fa32858b0657b834149fcdb