[INFO] cloning repository https://github.com/thatsnotright/rustywalk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thatsnotright/rustywalk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthatsnotright%2Frustywalk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthatsnotright%2Frustywalk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 846cf2a8a98e985519f40097aaffc32e619d022d
[INFO] documenting thatsnotright/rustywalk 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%2Fthatsnotright%2Frustywalk" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thatsnotright/rustywalk 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/thatsnotright/rustywalk
[INFO] finished tweaking git repo https://github.com/thatsnotright/rustywalk
[INFO] tweaked toml for git repo https://github.com/thatsnotright/rustywalk written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/thatsnotright/rustywalk 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 234be3d9c387c572c46085bae5ab8ad9431d7b74ffa468b009824f1e4fe2bee0
[INFO] running `Command { std: "docker" "start" "-a" "234be3d9c387c572c46085bae5ab8ad9431d7b74ffa468b009824f1e4fe2bee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "234be3d9c387c572c46085bae5ab8ad9431d7b74ffa468b009824f1e4fe2bee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "234be3d9c387c572c46085bae5ab8ad9431d7b74ffa468b009824f1e4fe2bee0", kill_on_drop: false }`
[INFO] [stdout] 234be3d9c387c572c46085bae5ab8ad9431d7b74ffa468b009824f1e4fe2bee0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] b5af13ca77a35ad84c9dc49bfefc2f6a13e4ffc7c1448412176a114af07ca374
[INFO] running `Command { std: "docker" "start" "-a" "b5af13ca77a35ad84c9dc49bfefc2f6a13e4ffc7c1448412176a114af07ca374", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling sdl2 v0.35.1 (https://github.com/rust-sdl2/rust-sdl2#8f056ad5)
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking array2d v0.2.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling sdl2-sys v0.35.1 (https://github.com/rust-sdl2/rust-sdl2#8f056ad5)
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling clap_derive v3.0.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking clap v3.0.1
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]  Documenting rwalk 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(hash_drain_filter)]
[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 `rwalk`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name rwalk 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=c8c845dcc00217f4 -L dependency=/opt/rustwide/target/debug/deps --extern array2d=/opt/rustwide/target/debug/deps/libarray2d-b259fde35f38d2c0.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-bced8321868561d6.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-0214f9e82c42d82a.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-89eb2e09560584c9.rmeta --extern sdl2=/opt/rustwide/target/debug/deps/libsdl2-02ae64f63f52b969.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c26d9a6c6dc149a0.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-d308f79d172ca423.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b5af13ca77a35ad84c9dc49bfefc2f6a13e4ffc7c1448412176a114af07ca374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5af13ca77a35ad84c9dc49bfefc2f6a13e4ffc7c1448412176a114af07ca374", kill_on_drop: false }`
[INFO] [stdout] b5af13ca77a35ad84c9dc49bfefc2f6a13e4ffc7c1448412176a114af07ca374