[INFO] cloning repository https://github.com/makr17/lightsine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/makr17/lightsine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmakr17%2Flightsine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmakr17%2Flightsine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 417fc71d16cde2d523f4255ec416205318d0812b
[INFO] documenting makr17/lightsine against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmakr17%2Flightsine" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/makr17/lightsine on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/makr17/lightsine
[INFO] finished tweaking git repo https://github.com/makr17/lightsine
[INFO] tweaked toml for git repo https://github.com/makr17/lightsine written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/makr17/lightsine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sacn v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 964d2e59561ab22c165ef7715c3da75d26afbdfa9d0f93f31f3ede30c3a8b038
[INFO] running `Command { std: "docker" "start" "-a" "964d2e59561ab22c165ef7715c3da75d26afbdfa9d0f93f31f3ede30c3a8b038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "964d2e59561ab22c165ef7715c3da75d26afbdfa9d0f93f31f3ede30c3a8b038", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "964d2e59561ab22c165ef7715c3da75d26afbdfa9d0f93f31f3ede30c3a8b038", kill_on_drop: false }`
[INFO] [stdout] 964d2e59561ab22c165ef7715c3da75d26afbdfa9d0f93f31f3ede30c3a8b038
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e9383d1886449c7e9e6004fe1a78c8252ac10e275056e0ea6554a61700d657f
[INFO] running `Command { std: "docker" "start" "-a" "8e9383d1886449c7e9e6004fe1a78c8252ac10e275056e0ea6554a61700d657f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.17
[INFO] [stderr]     Checking rustc-serialize v0.3.21
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking sacn v0.1.1
[INFO] [stderr]  Documenting lightsine 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_arith)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `lightsine`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name lightsine src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern sacn=/opt/rustwide/target/debug/deps/libsacn-461aa4e22de184c8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8e9383d1886449c7e9e6004fe1a78c8252ac10e275056e0ea6554a61700d657f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e9383d1886449c7e9e6004fe1a78c8252ac10e275056e0ea6554a61700d657f", kill_on_drop: false }`
[INFO] [stdout] 8e9383d1886449c7e9e6004fe1a78c8252ac10e275056e0ea6554a61700d657f
