[INFO] cloning repository https://github.com/archer884/reduce
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/archer884/reduce" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Freduce", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Freduce'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07e4c1012a109c390a30fe479b1837dc62544ab5
[INFO] documenting archer884/reduce against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Freduce" "/workspace/builds/worker-99/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-99/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/archer884/reduce on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/archer884/reduce
[INFO] finished tweaking git repo https://github.com/archer884/reduce
[INFO] tweaked toml for git repo https://github.com/archer884/reduce written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] crate git repo https://github.com/archer884/reduce already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/archer884/iter-ord`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grabinput v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 423409fdceab5a529b32c04fa79bfd0f56fe0f0f704a7c61bf0b0fb290f7b71e
[INFO] running `Command { std: "docker" "start" "-a" "423409fdceab5a529b32c04fa79bfd0f56fe0f0f704a7c61bf0b0fb290f7b71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "423409fdceab5a529b32c04fa79bfd0f56fe0f0f704a7c61bf0b0fb290f7b71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "423409fdceab5a529b32c04fa79bfd0f56fe0f0f704a7c61bf0b0fb290f7b71e", kill_on_drop: false }`
[INFO] [stdout] 423409fdceab5a529b32c04fa79bfd0f56fe0f0f704a7c61bf0b0fb290f7b71e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26ec7875c5fc9ec7bae451294d0664f662bd1dd0647cc15c6ce9153b6c66f416
[INFO] running `Command { std: "docker" "start" "-a" "26ec7875c5fc9ec7bae451294d0664f662bd1dd0647cc15c6ce9153b6c66f416", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking iter-ord v0.1.0 (https://github.com/archer884/iter-ord#2e48d1aa)
[INFO] [stderr]     Checking grabinput v0.1.1
[INFO] [stderr]  Documenting reduce 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `reduce`
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name reduce 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 grabinput=/opt/rustwide/target/debug/deps/libgrabinput-bf097ecb27aae81b.rmeta --extern iter_ord=/opt/rustwide/target/debug/deps/libiter_ord-51718a39e865e279.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "26ec7875c5fc9ec7bae451294d0664f662bd1dd0647cc15c6ce9153b6c66f416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26ec7875c5fc9ec7bae451294d0664f662bd1dd0647cc15c6ce9153b6c66f416", kill_on_drop: false }`
[INFO] [stdout] 26ec7875c5fc9ec7bae451294d0664f662bd1dd0647cc15c6ce9153b6c66f416
