[INFO] fetching crate festive-bot 1.1.0...
[INFO] documenting festive-bot-1.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate festive-bot 1.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate festive-bot 1.1.0 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] removed /workspace/builds/worker-1-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate festive-bot 1.1.0
[INFO] finished tweaking crates.io crate festive-bot 1.1.0
[INFO] tweaked toml for crates.io crate festive-bot 1.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate festive-bot 1.1.0 already has a lockfile, it will not be regenerated
[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 openssl-sys v0.9.96
[INFO] [stderr]   Downloaded openssl v0.10.60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 07ca375b8136fb2b41cc27f169846b302d197d47490a772fc4ea3787b45f33b8
[INFO] running `Command { std: "docker" "start" "-a" "07ca375b8136fb2b41cc27f169846b302d197d47490a772fc4ea3787b45f33b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07ca375b8136fb2b41cc27f169846b302d197d47490a772fc4ea3787b45f33b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ca375b8136fb2b41cc27f169846b302d197d47490a772fc4ea3787b45f33b8", kill_on_drop: false }`
[INFO] [stdout] 07ca375b8136fb2b41cc27f169846b302d197d47490a772fc4ea3787b45f33b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0e94eaf2c6f9b8ded86e2615fbbf641263a4a3cab86d55795fe55b7150be45b6
[INFO] running `Command { std: "docker" "start" "-a" "0e94eaf2c6f9b8ded86e2615fbbf641263a4a3cab86d55795fe55b7150be45b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling futures-core v0.3.29
[INFO] [stderr]    Compiling futures-task v0.3.29
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling openssl v0.10.60
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking futures-sink v0.3.29
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking futures-io v0.3.29
[INFO] [stderr]    Compiling futures-channel v0.3.29
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]    Compiling openssl-sys v0.9.96
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking tokio v1.34.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking ctrlc v3.4.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking h2 v0.3.22
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.22
[INFO] [stderr]  Documenting festive-bot v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[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 `festive-bot`
[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 bin --crate-name festive_bot src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=2b7c8b37d3a7ffcb -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-a022079d503be058.rmeta --extern ctrlc=/opt/rustwide/target/debug/deps/libctrlc-1806463f9729ee20.rmeta --extern json=/opt/rustwide/target/debug/deps/libjson-77e08433c0b6699a.rmeta --extern num_rational=/opt/rustwide/target/debug/deps/libnum_rational-0bb3407a4b597653.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-3467de8a575b31ff.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-70fe30de904bcedc.rmeta --cap-lints=warn --crate-version 1.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0e94eaf2c6f9b8ded86e2615fbbf641263a4a3cab86d55795fe55b7150be45b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e94eaf2c6f9b8ded86e2615fbbf641263a4a3cab86d55795fe55b7150be45b6", kill_on_drop: false }`
[INFO] [stdout] 0e94eaf2c6f9b8ded86e2615fbbf641263a4a3cab86d55795fe55b7150be45b6
