[INFO] cloning repository https://github.com/burbokop/lgh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/burbokop/lgh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburbokop%2Flgh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburbokop%2Flgh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d42738f67c530e616ec403fb0f3c0323e745fae6
[INFO] documenting burbokop/lgh against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fburbokop%2Flgh" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/burbokop/lgh on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/burbokop/lgh
[INFO] finished tweaking git repo https://github.com/burbokop/lgh
[INFO] tweaked toml for git repo https://github.com/burbokop/lgh written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/burbokop/lgh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c_vec v2.0.0
[INFO] [stderr]   Downloaded vecmat v0.7.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 121f3b6274e24fb262143d9177e2a433302ea5de6abfde16932d65c136325876
[INFO] running `Command { std: "docker" "start" "-a" "121f3b6274e24fb262143d9177e2a433302ea5de6abfde16932d65c136325876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "121f3b6274e24fb262143d9177e2a433302ea5de6abfde16932d65c136325876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "121f3b6274e24fb262143d9177e2a433302ea5de6abfde16932d65c136325876", kill_on_drop: false }`
[INFO] [stdout] 121f3b6274e24fb262143d9177e2a433302ea5de6abfde16932d65c136325876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 027850fd39f0bc20afbd82402a869cadc70e1d3eeb3ab44c2af0d20dd061969a
[INFO] running `Command { std: "docker" "start" "-a" "027850fd39f0bc20afbd82402a869cadc70e1d3eeb3ab44c2af0d20dd061969a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling libm v0.2.2
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking c_vec v2.0.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking vecmat v0.7.7
[INFO] [stderr]  Documenting lgh 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(option_result_contains)]
[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 `lgh`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name lgh src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ffc9bc262f692e78 -L dependency=/opt/rustwide/target/debug/deps --extern itertools=/opt/rustwide/target/debug/deps/libitertools-c3e915a3b5e36158.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-e94cdc872b8d0f58.rmeta --extern sdl2=/opt/rustwide/target/debug/deps/libsdl2-7799c1249869c4e0.rmeta --extern vecmat=/opt/rustwide/target/debug/deps/libvecmat-a8fb3de27b187e40.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "027850fd39f0bc20afbd82402a869cadc70e1d3eeb3ab44c2af0d20dd061969a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "027850fd39f0bc20afbd82402a869cadc70e1d3eeb3ab44c2af0d20dd061969a", kill_on_drop: false }`
[INFO] [stdout] 027850fd39f0bc20afbd82402a869cadc70e1d3eeb3ab44c2af0d20dd061969a