[INFO] cloning repository https://github.com/Zinnusl/train
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Zinnusl/train" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZinnusl%2Ftrain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZinnusl%2Ftrain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6368ce3cdef7338fbfb5b4fcb50f1fb479bc0680
[INFO] documenting Zinnusl/train 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%2FZinnusl%2Ftrain" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Zinnusl/train 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/Zinnusl/train
[INFO] finished tweaking git repo https://github.com/Zinnusl/train
[INFO] tweaked toml for git repo https://github.com/Zinnusl/train written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Zinnusl/train 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded midir v0.8.0
[INFO] [stderr]   Downloaded coremidi-sys v3.1.0
[INFO] [stderr]   Downloaded coremidi v0.6.0
[INFO] [stderr]   Downloaded more-di v2.1.1
[INFO] [stderr]   Downloaded more-di-macros v2.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3748c94bdefa2b218aa288bb91d7d3098e183cab4250c8c28f54e2de128d6ef2
[INFO] running `Command { std: "docker" "start" "-a" "3748c94bdefa2b218aa288bb91d7d3098e183cab4250c8c28f54e2de128d6ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3748c94bdefa2b218aa288bb91d7d3098e183cab4250c8c28f54e2de128d6ef2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3748c94bdefa2b218aa288bb91d7d3098e183cab4250c8c28f54e2de128d6ef2", kill_on_drop: false }`
[INFO] [stdout] 3748c94bdefa2b218aa288bb91d7d3098e183cab4250c8c28f54e2de128d6ef2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8d668dc3a87ca35f40d5d0992c276c6a37ff2e90aec6f2ff5272d1f45cf60178
[INFO] running `Command { std: "docker" "start" "-a" "8d668dc3a87ca35f40d5d0992c276c6a37ff2e90aec6f2ff5272d1f45cf60178", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling rustix v0.37.13
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking nix v0.23.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]    Compiling async-process v1.7.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling cpal v0.14.2
[INFO] [stderr]     Checking os_str_bytes v6.5.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]     Checking chrono v0.4.24
[INFO] [stderr]     Checking ringbuf v0.2.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hound v3.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking alsa v0.6.0
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling clap_derive v3.2.18
[INFO] [stderr]    Compiling more-di-macros v2.1.0
[INFO] [stderr]     Checking midir v0.8.0
[INFO] [stderr]     Checking more-di v2.1.1
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking clap v3.2.23
[INFO] [stderr]  Documenting train 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(is_some_and)]
[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 `train`
[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 train 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=2f2ca1eee2182505 -L dependency=/opt/rustwide/target/debug/deps --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-e515ebc34b97f92c.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-a8f1a527ca3e50a0.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-c45201383f12d421.rmeta --extern cpal=/opt/rustwide/target/debug/deps/libcpal-c31d20cd4a6f810f.rmeta --extern hound=/opt/rustwide/target/debug/deps/libhound-d428668396ab3f38.rmeta --extern midir=/opt/rustwide/target/debug/deps/libmidir-10ee0cc328fdbac9.rmeta --extern di=/opt/rustwide/target/debug/deps/libdi-6a679288d8814773.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-7399f87508f0c0ec.rmeta --extern ringbuf=/opt/rustwide/target/debug/deps/libringbuf-e0eb4ec01b63e400.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-1c2f29f5d8141820.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-2cf07571751760b6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8d668dc3a87ca35f40d5d0992c276c6a37ff2e90aec6f2ff5272d1f45cf60178", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d668dc3a87ca35f40d5d0992c276c6a37ff2e90aec6f2ff5272d1f45cf60178", kill_on_drop: false }`
[INFO] [stdout] 8d668dc3a87ca35f40d5d0992c276c6a37ff2e90aec6f2ff5272d1f45cf60178
