[INFO] fetching crate libsmallworld 0.1.0...
[INFO] documenting libsmallworld-0.1.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate libsmallworld 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate libsmallworld 0.1.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate libsmallworld 0.1.0
[INFO] finished tweaking crates.io crate libsmallworld 0.1.0
[INFO] tweaked toml for crates.io crate libsmallworld 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3eea7e546aebd9d121c25930f10f4c9e6a1a4d6529c0838572726f55e4b9f13
[INFO] running `Command { std: "docker" "start" "-a" "a3eea7e546aebd9d121c25930f10f4c9e6a1a4d6529c0838572726f55e4b9f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3eea7e546aebd9d121c25930f10f4c9e6a1a4d6529c0838572726f55e4b9f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3eea7e546aebd9d121c25930f10f4c9e6a1a4d6529c0838572726f55e4b9f13", kill_on_drop: false }`
[INFO] [stdout] a3eea7e546aebd9d121c25930f10f4c9e6a1a4d6529c0838572726f55e4b9f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 597c9f7b8ff23f88233659881f9f0af9c18697e68bc1d89caf11c5804992eb49
[INFO] running `Command { std: "docker" "start" "-a" "597c9f7b8ff23f88233659881f9f0af9c18697e68bc1d89caf11c5804992eb49", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling enumflags2_derive v0.7.9
[INFO] [stderr]     Checking enumflags2 v0.7.9
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]    Compiling binread_derive v2.1.0
[INFO] [stderr]     Checking binread v2.2.0
[INFO] [stderr]  Documenting libsmallworld v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(concat_bytes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(int_roundings)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `libsmallworld`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name libsmallworld src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4ef3534cf66528ac -L dependency=/opt/rustwide/target/debug/deps --extern binread=/opt/rustwide/target/debug/deps/libbinread-3b73567a3b054751.rmeta --extern enumflags2=/opt/rustwide/target/debug/deps/libenumflags2-515c1564cb9f54c1.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-d40f6d0edd1769a8.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c2b9fe8f0bb60ac5.rmeta --extern phf=/opt/rustwide/target/debug/deps/libphf-0574e142b24ba507.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-ad5887282137f653.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[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] running `Command { std: "docker" "inspect" "597c9f7b8ff23f88233659881f9f0af9c18697e68bc1d89caf11c5804992eb49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597c9f7b8ff23f88233659881f9f0af9c18697e68bc1d89caf11c5804992eb49", kill_on_drop: false }`
[INFO] [stdout] 597c9f7b8ff23f88233659881f9f0af9c18697e68bc1d89caf11c5804992eb49
