[INFO] cloning repository https://github.com/gorilskij/rustiks
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gorilskij/rustiks" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgorilskij%2Frustiks", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgorilskij%2Frustiks'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dfbe83284d622992353cc3d2587cbcbfa014d01
[INFO] documenting gorilskij/rustiks 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%2Fgorilskij%2Frustiks" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gorilskij/rustiks 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/gorilskij/rustiks
[INFO] finished tweaking git repo https://github.com/gorilskij/rustiks
[INFO] tweaked toml for git repo https://github.com/gorilskij/rustiks written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/gorilskij/rustiks 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 71accf5e16e760216f575b2ad1f2622447b5739451b5291a21b4e7cccc20e906
[INFO] running `Command { std: "docker" "start" "-a" "71accf5e16e760216f575b2ad1f2622447b5739451b5291a21b4e7cccc20e906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71accf5e16e760216f575b2ad1f2622447b5739451b5291a21b4e7cccc20e906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71accf5e16e760216f575b2ad1f2622447b5739451b5291a21b4e7cccc20e906", kill_on_drop: false }`
[INFO] [stdout] 71accf5e16e760216f575b2ad1f2622447b5739451b5291a21b4e7cccc20e906
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 516bc61bdf08e33f45c92d505e2f08676d2c8b5430e289b6c757e7783bbc3967
[INFO] running `Command { std: "docker" "start" "-a" "516bc61bdf08e33f45c92d505e2f08676d2c8b5430e289b6c757e7783bbc3967", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.9
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]  Documenting Rustiks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(option_expect_none)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `option_expect_none`
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(option_expect_none)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `Rustiks`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name Rustiks 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=67aa6ecfa8a4e0c0 -L dependency=/opt/rustwide/target/debug/deps --extern colored=/opt/rustwide/target/debug/deps/libcolored-0e978794b0e742bd.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-0a1479e859b3412a.rmeta --extern md5=/opt/rustwide/target/debug/deps/libmd5-344a5d5e6a154a87.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5454c46b8ac3c59e.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2003c57be15fc829.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "516bc61bdf08e33f45c92d505e2f08676d2c8b5430e289b6c757e7783bbc3967", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516bc61bdf08e33f45c92d505e2f08676d2c8b5430e289b6c757e7783bbc3967", kill_on_drop: false }`
[INFO] [stdout] 516bc61bdf08e33f45c92d505e2f08676d2c8b5430e289b6c757e7783bbc3967