[INFO] cloning repository https://github.com/jgjin/us-life-insurance
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgjin/us-life-insurance" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgjin%2Fus-life-insurance", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgjin%2Fus-life-insurance'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b65c4e9c6fe28ad4a0695a5e7d9fee78943d5d0
[INFO] documenting jgjin/us-life-insurance 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%2Fjgjin%2Fus-life-insurance" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgjin/us-life-insurance 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/jgjin/us-life-insurance
[INFO] finished tweaking git repo https://github.com/jgjin/us-life-insurance
[INFO] tweaked toml for git repo https://github.com/jgjin/us-life-insurance written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/jgjin/us-life-insurance 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]     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-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] ad4e2d6926a840393ccf73cb1497ab8a76d4ba7144b4ba20e33171acde1fbe5a
[INFO] running `Command { std: "docker" "start" "-a" "ad4e2d6926a840393ccf73cb1497ab8a76d4ba7144b4ba20e33171acde1fbe5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad4e2d6926a840393ccf73cb1497ab8a76d4ba7144b4ba20e33171acde1fbe5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad4e2d6926a840393ccf73cb1497ab8a76d4ba7144b4ba20e33171acde1fbe5a", kill_on_drop: false }`
[INFO] [stdout] ad4e2d6926a840393ccf73cb1497ab8a76d4ba7144b4ba20e33171acde1fbe5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 1744ff604fcce4e4bf2cb015c058c28cd3ae86f0ee772b239197cd1e7726e1c3
[INFO] running `Command { std: "docker" "start" "-a" "1744ff604fcce4e4bf2cb015c058c28cd3ae86f0ee772b239197cd1e7726e1c3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]     Checking csv v1.0.0-beta.5
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]  Documenting us-life-insurance 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(option_filter)]
[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 `us-life-insurance`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name us_life_insurance 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 csv=/opt/rustwide/target/debug/deps/libcsv-b4884125bb41ba79.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-7680915df550e9ac.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-461a4cefe8fc3da0.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1744ff604fcce4e4bf2cb015c058c28cd3ae86f0ee772b239197cd1e7726e1c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1744ff604fcce4e4bf2cb015c058c28cd3ae86f0ee772b239197cd1e7726e1c3", kill_on_drop: false }`
[INFO] [stdout] 1744ff604fcce4e4bf2cb015c058c28cd3ae86f0ee772b239197cd1e7726e1c3
