[INFO] cloning repository https://github.com/aqrun/learning_rust_by_games
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aqrun/learning_rust_by_games" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faqrun%2Flearning_rust_by_games", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faqrun%2Flearning_rust_by_games'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eea6a01b3276231bc68cc87224aa37bd569c92e
[INFO] documenting aqrun/learning_rust_by_games 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%2Faqrun%2Flearning_rust_by_games" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aqrun/learning_rust_by_games 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/aqrun/learning_rust_by_games
[INFO] finished tweaking git repo https://github.com/aqrun/learning_rust_by_games
[INFO] tweaked toml for git repo https://github.com/aqrun/learning_rust_by_games written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/aqrun/learning_rust_by_games 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-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] 2020cba4d2cf3ed541192ecc29726c84c923cc25af153b3c18b7b79cb624e366
[INFO] running `Command { std: "docker" "start" "-a" "2020cba4d2cf3ed541192ecc29726c84c923cc25af153b3c18b7b79cb624e366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2020cba4d2cf3ed541192ecc29726c84c923cc25af153b3c18b7b79cb624e366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2020cba4d2cf3ed541192ecc29726c84c923cc25af153b3c18b7b79cb624e366", kill_on_drop: false }`
[INFO] [stdout] 2020cba4d2cf3ed541192ecc29726c84c923cc25af153b3c18b7b79cb624e366
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] cb9a40752031081d3e2126b39ef7b6072087e34da8a9062c9825c2dc09476b4d
[INFO] running `Command { std: "docker" "start" "-a" "cb9a40752031081d3e2126b39ef7b6072087e34da8a9062c9825c2dc09476b4d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking instant v0.1.7
[INFO] [stderr]     Checking libc v0.2.79
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking mio v0.7.3
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking crossterm v0.18.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking learning_rust_by_games v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting learning_rust_by_games v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `learning_rust_by_games`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name 2_3_2_show_bird_and_obstacle src/bin/2-3-2-show-bird-and-obstacle.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-eb53938fc1ca0ca8.rmeta --extern aqrun_lrbg=/opt/rustwide/target/debug/deps/libaqrun_lrbg-f43c4895af27e82f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3c2c54ab7f08fa89.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cb9a40752031081d3e2126b39ef7b6072087e34da8a9062c9825c2dc09476b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb9a40752031081d3e2126b39ef7b6072087e34da8a9062c9825c2dc09476b4d", kill_on_drop: false }`
[INFO] [stdout] cb9a40752031081d3e2126b39ef7b6072087e34da8a9062c9825c2dc09476b4d
