[INFO] fetching crate emplacable 0.1.0-alpha.11...
[INFO] documenting emplacable-0.1.0-alpha.11 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate emplacable 0.1.0-alpha.11 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate emplacable 0.1.0-alpha.11 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emplacable 0.1.0-alpha.11
[INFO] finished tweaking crates.io crate emplacable 0.1.0-alpha.11
[INFO] tweaked toml for crates.io crate emplacable 0.1.0-alpha.11 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 981c26125016776562c2f6acf58f0399fdd8a1dd5b930617587fedc8660bd7b5
[INFO] running `Command { std: "docker" "start" "-a" "981c26125016776562c2f6acf58f0399fdd8a1dd5b930617587fedc8660bd7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "981c26125016776562c2f6acf58f0399fdd8a1dd5b930617587fedc8660bd7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "981c26125016776562c2f6acf58f0399fdd8a1dd5b930617587fedc8660bd7b5", kill_on_drop: false }`
[INFO] [stdout] 981c26125016776562c2f6acf58f0399fdd8a1dd5b930617587fedc8660bd7b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c28b53210cbc282262c0b25050de79a76b1eaa0556abdc161c8109ef750695c
[INFO] running `Command { std: "docker" "start" "-a" "6c28b53210cbc282262c0b25050de79a76b1eaa0556abdc161c8109ef750695c", kill_on_drop: false }`
[INFO] [stderr]  Documenting emplacable v0.1.0-alpha.11 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | / #![feature(
[INFO] [stdout] 81 | |     allocator_api,
[INFO] [stdout] 82 | |     closure_lifetime_binder,
[INFO] [stdout] 83 | |     forget_unsized,
[INFO] [stdout] ...  |
[INFO] [stdout] 91 | |     unsized_fn_params
[INFO] [stdout] 92 | | )]
[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 document `emplacable`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name emplacable src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eab923c00739e94a -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0-alpha.11` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6c28b53210cbc282262c0b25050de79a76b1eaa0556abdc161c8109ef750695c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c28b53210cbc282262c0b25050de79a76b1eaa0556abdc161c8109ef750695c", kill_on_drop: false }`
[INFO] [stdout] 6c28b53210cbc282262c0b25050de79a76b1eaa0556abdc161c8109ef750695c
[INFO] documenting emplacable-0.1.0-alpha.11 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate emplacable 0.1.0-alpha.11 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate emplacable 0.1.0-alpha.11 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emplacable 0.1.0-alpha.11
[INFO] finished tweaking crates.io crate emplacable 0.1.0-alpha.11
[INFO] tweaked toml for crates.io crate emplacable 0.1.0-alpha.11 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f78f86d882e7fa286a67158a0d49d9c4fdccdbea57cb78f7493415fb295fd50
[INFO] running `Command { std: "docker" "start" "-a" "2f78f86d882e7fa286a67158a0d49d9c4fdccdbea57cb78f7493415fb295fd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f78f86d882e7fa286a67158a0d49d9c4fdccdbea57cb78f7493415fb295fd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f78f86d882e7fa286a67158a0d49d9c4fdccdbea57cb78f7493415fb295fd50", kill_on_drop: false }`
[INFO] [stdout] 2f78f86d882e7fa286a67158a0d49d9c4fdccdbea57cb78f7493415fb295fd50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee45adfae1fd55aec2667e904cad05abce6f39ff16938e80fd11c39814066099
[INFO] running `Command { std: "docker" "start" "-a" "ee45adfae1fd55aec2667e904cad05abce6f39ff16938e80fd11c39814066099", kill_on_drop: false }`
[INFO] [stderr]  Documenting emplacable v0.1.0-alpha.11 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:80:1
[INFO] [stdout]    |
[INFO] [stdout] 80 | / #![feature(
[INFO] [stdout] 81 | |     allocator_api,
[INFO] [stdout] 82 | |     closure_lifetime_binder,
[INFO] [stdout] 83 | |     forget_unsized,
[INFO] [stdout] ...  |
[INFO] [stdout] 91 | |     unsized_fn_params
[INFO] [stdout] 92 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 document `emplacable`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-12-22-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name emplacable src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=78034b135b97aadd -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0-alpha.11` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ee45adfae1fd55aec2667e904cad05abce6f39ff16938e80fd11c39814066099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee45adfae1fd55aec2667e904cad05abce6f39ff16938e80fd11c39814066099", kill_on_drop: false }`
[INFO] [stdout] ee45adfae1fd55aec2667e904cad05abce6f39ff16938e80fd11c39814066099
