[INFO] cloning repository https://github.com/blackdragon2447/leftwm-config
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blackdragon2447/leftwm-config" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblackdragon2447%2Fleftwm-config", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblackdragon2447%2Fleftwm-config'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af46ba6a61d6a4ae8f58d6e42314505c66e91086
[INFO] documenting blackdragon2447/leftwm-config against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblackdragon2447%2Fleftwm-config" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blackdragon2447/leftwm-config on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blackdragon2447/leftwm-config
[INFO] finished tweaking git repo https://github.com/blackdragon2447/leftwm-config
[INFO] tweaked toml for git repo https://github.com/blackdragon2447/leftwm-config written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/blackdragon2447/leftwm-config already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e5a999b89b5b327bbbb89b76eb98cdef4c334b9f37a40b0d3bed45d049daf64
[INFO] running `Command { std: "docker" "start" "-a" "1e5a999b89b5b327bbbb89b76eb98cdef4c334b9f37a40b0d3bed45d049daf64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e5a999b89b5b327bbbb89b76eb98cdef4c334b9f37a40b0d3bed45d049daf64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e5a999b89b5b327bbbb89b76eb98cdef4c334b9f37a40b0d3bed45d049daf64", kill_on_drop: false }`
[INFO] [stdout] 1e5a999b89b5b327bbbb89b76eb98cdef4c334b9f37a40b0d3bed45d049daf64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dba4b0bb6d9f8cfdcd89535ee4ec4e60b03252af481afd2201bc076cfad1a672
[INFO] running `Command { std: "docker" "start" "-a" "dba4b0bb6d9f8cfdcd89535ee4ec4e60b03252af481afd2201bc076cfad1a672", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking xdg v2.4.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]     Checking tui v0.17.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling git-version-macro v0.3.5
[INFO] [stderr]     Checking git-version v0.3.5
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]  Documenting leftwm-config v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(is_some_with)]
[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 `leftwm-config`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name leftwm_config 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=db8629a0e81cfa35 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-f1182eb1ea07fabc.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-8e92afc72acac034.rmeta --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-5f91dcb1316763fe.rmeta --extern git_version=/opt/rustwide/target/debug/deps/libgit_version-14a22046325ede96.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-0a324ed5cbda8759.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-af5076fd934aff4b.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-fb447ef1b3f7d4f0.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-f0822d7529d38554.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-54e4d12cb82c04db.rmeta --extern tui=/opt/rustwide/target/debug/deps/libtui-784b1cded7f4aa25.rmeta --extern xdg=/opt/rustwide/target/debug/deps/libxdg-91c3137a46037b4d.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "dba4b0bb6d9f8cfdcd89535ee4ec4e60b03252af481afd2201bc076cfad1a672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dba4b0bb6d9f8cfdcd89535ee4ec4e60b03252af481afd2201bc076cfad1a672", kill_on_drop: false }`
[INFO] [stdout] dba4b0bb6d9f8cfdcd89535ee4ec4e60b03252af481afd2201bc076cfad1a672