[INFO] cloning repository https://github.com/Demonyx/leafy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Demonyx/leafy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDemonyx%2Fleafy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDemonyx%2Fleafy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4b685733f6574e1b307b57349ab6b6f78fe3df0
[INFO] documenting Demonyx/leafy against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDemonyx%2Fleafy" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Demonyx/leafy 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 git repo https://github.com/Demonyx/leafy
[INFO] finished tweaking git repo https://github.com/Demonyx/leafy
[INFO] tweaked toml for git repo https://github.com/Demonyx/leafy written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Demonyx/leafy 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 poise_macros v0.5.5
[INFO] [stderr]   Downloaded poise v0.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e7a15c5fe9d35b348af34e01baab621e6c09f77c2e211f682cea6dc62ebe2aa3
[INFO] running `Command { std: "docker" "start" "-a" "e7a15c5fe9d35b348af34e01baab621e6c09f77c2e211f682cea6dc62ebe2aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7a15c5fe9d35b348af34e01baab621e6c09f77c2e211f682cea6dc62ebe2aa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a15c5fe9d35b348af34e01baab621e6c09f77c2e211f682cea6dc62ebe2aa3", kill_on_drop: false }`
[INFO] [stdout] e7a15c5fe9d35b348af34e01baab621e6c09f77c2e211f682cea6dc62ebe2aa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fa516ff9eeaff96965a1936f36cd499943cea632524e9894ba22509c7f377aa6
[INFO] running `Command { std: "docker" "start" "-a" "fa516ff9eeaff96965a1936f36cd499943cea632524e9894ba22509c7f377aa6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]    Compiling rustls v0.21.1
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking rustls-pemfile v1.0.2
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]    Compiling serenity v0.11.5
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking ipnet v2.7.2
[INFO] [stderr]     Checking time-core v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking typemap_rev v0.1.5
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking regex v1.8.4
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking rustls-webpki v0.100.1
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]     Checking webpki-roots v0.22.6
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.24
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling poise_macros v0.5.5
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking h2 v0.3.19
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking dashmap v5.4.0
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]     Checking time v0.3.22
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking tungstenite v0.17.3
[INFO] [stderr]     Checking async-tungstenite v0.17.2
[INFO] [stderr]     Checking hyper v0.14.26
[INFO] [stderr]     Checking hyper-rustls v0.24.0
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking poise v0.5.5
[INFO] [stderr]  Documenting leafy v0.1.0 (/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(iter_intersperse)]
[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 `leafy`
[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 leafy 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=af18e26b000331cd -L dependency=/opt/rustwide/target/debug/deps --extern bincode=/opt/rustwide/target/debug/deps/libbincode-268c16fa83e804ea.rmeta --extern poise=/opt/rustwide/target/debug/deps/libpoise-b0a227bbe179dec1.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-ffe09d735858dbd5.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-64fb6a0c5583995a.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-603d2101588467b5.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-c63a45fea7fb464c.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "fa516ff9eeaff96965a1936f36cd499943cea632524e9894ba22509c7f377aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa516ff9eeaff96965a1936f36cd499943cea632524e9894ba22509c7f377aa6", kill_on_drop: false }`
[INFO] [stdout] fa516ff9eeaff96965a1936f36cd499943cea632524e9894ba22509c7f377aa6
