[INFO] fetching crate mca-cuboids 0.2.0...
[INFO] documenting mca-cuboids-0.2.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate mca-cuboids 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mca-cuboids 0.2.0 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 mca-cuboids 0.2.0
[INFO] finished tweaking crates.io crate mca-cuboids 0.2.0
[INFO] tweaked toml for crates.io crate mca-cuboids 0.2.0 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] [stderr]     Updating crates.io index
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded findshlibs v0.10.2
[INFO] [stderr]   Downloaded str_stack v0.1.0
[INFO] [stderr]   Downloaded inferno v0.11.19
[INFO] [stderr]   Downloaded symbolic-common v9.2.1
[INFO] [stderr]   Downloaded pprof v0.10.1
[INFO] [stderr]   Downloaded fastnbt v2.4.4
[INFO] [stderr]   Downloaded symbolic-demangle v9.2.1
[INFO] [stderr]   Downloaded quick-xml v0.26.0
[INFO] [stderr]   Downloaded fastanvil v0.26.3
[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] 011f28f3025ee3b5a4061618ec5e1dd4bf29232893f87cc0a9ae91e21beb19b2
[INFO] running `Command { std: "docker" "start" "-a" "011f28f3025ee3b5a4061618ec5e1dd4bf29232893f87cc0a9ae91e21beb19b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "011f28f3025ee3b5a4061618ec5e1dd4bf29232893f87cc0a9ae91e21beb19b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011f28f3025ee3b5a4061618ec5e1dd4bf29232893f87cc0a9ae91e21beb19b2", kill_on_drop: false }`
[INFO] [stdout] 011f28f3025ee3b5a4061618ec5e1dd4bf29232893f87cc0a9ae91e21beb19b2
[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] e86b373ff8e4800583ed2bdbe0153612183279681375a265e7985b186cd60608
[INFO] running `Command { std: "docker" "start" "-a" "e86b373ff8e4800583ed2bdbe0153612183279681375a265e7985b186cd60608", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling winnow v0.5.33
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking bytemuck v1.14.0
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking fastnbt v2.4.4
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]     Checking fastanvil v0.26.3
[INFO] [stderr]  Documenting mca-cuboids v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(test)]
[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 `mca-cuboids`
[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 mca_cuboids src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=30cbb3025e89772c -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-fd85f3ee78419db7.rmeta --extern fastanvil=/opt/rustwide/target/debug/deps/libfastanvil-8da79616771c4135.rmeta --extern fastnbt=/opt/rustwide/target/debug/deps/libfastnbt-35101a34b19e3622.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-97a1b2d1b6045209.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-319bf41ec1876518.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e86b373ff8e4800583ed2bdbe0153612183279681375a265e7985b186cd60608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86b373ff8e4800583ed2bdbe0153612183279681375a265e7985b186cd60608", kill_on_drop: false }`
[INFO] [stdout] e86b373ff8e4800583ed2bdbe0153612183279681375a265e7985b186cd60608
