[INFO] cloning repository https://github.com/Beardiegames/piston_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Beardiegames/piston_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardiegames%2Fpiston_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardiegames%2Fpiston_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 383016928543a6385a0209c515a574981daf250c
[INFO] documenting Beardiegames/piston_test against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeardiegames%2Fpiston_test" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Beardiegames/piston_test on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Beardiegames/piston_test
[INFO] finished tweaking git repo https://github.com/Beardiegames/piston_test
[INFO] tweaked toml for git repo https://github.com/Beardiegames/piston_test written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Beardiegames/piston_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b9845590c8953d61290e5296920e6ac1b65bf41d817c6104ed30342ae7f0160
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6b9845590c8953d61290e5296920e6ac1b65bf41d817c6104ed30342ae7f0160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b9845590c8953d61290e5296920e6ac1b65bf41d817c6104ed30342ae7f0160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b9845590c8953d61290e5296920e6ac1b65bf41d817c6104ed30342ae7f0160", kill_on_drop: false }`
[INFO] [stdout] 6b9845590c8953d61290e5296920e6ac1b65bf41d817c6104ed30342ae7f0160
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b4cac95e995f872a4cc010adfba5df6aaa8e5794b64cd1457c98f1d0f9a2e5ad
[INFO] running `Command { std: "docker" "start" "-a" "b4cac95e995f872a4cc010adfba5df6aaa8e5794b64cd1457c98f1d0f9a2e5ad", kill_on_drop: false }`
[INFO] [stderr]     Checking find_folder v0.3.0
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking quaternion v0.4.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling derivative v1.0.2
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking piston2d-graphics v0.32.0
[INFO] [stderr]     Checking piston3d-cam v0.4.0
[INFO] [stderr]     Checking piston2d-deform_grid v0.2.0
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.1
[INFO] [stderr]     Checking gfx_core v0.8.3
[INFO] [stderr]     Checking gfx v0.17.1
[INFO] [stderr]     Checking gfx_device_gl v0.15.5
[INFO] [stderr]     Checking piston-gfx_texture v0.36.0
[INFO] [stderr]     Checking pistoncore-input v0.25.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.58.0
[INFO] [stderr]     Checking pistoncore-window v0.38.0
[INFO] [stderr]     Checking piston-ai_behavior v0.28.0
[INFO] [stderr]     Checking camera_controllers v0.28.0
[INFO] [stderr]     Checking piston2d-drag_controller v0.26.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.43.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.55.0
[INFO] [stderr]     Checking piston2d-sprite v0.52.0
[INFO] [stderr]     Checking piston v0.43.0
[INFO] [stderr]     Checking piston_window v0.93.0
[INFO] [stderr]  Documenting piston_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.85s
[INFO] running `Command { std: "docker" "inspect" "b4cac95e995f872a4cc010adfba5df6aaa8e5794b64cd1457c98f1d0f9a2e5ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4cac95e995f872a4cc010adfba5df6aaa8e5794b64cd1457c98f1d0f9a2e5ad", kill_on_drop: false }`
[INFO] [stdout] b4cac95e995f872a4cc010adfba5df6aaa8e5794b64cd1457c98f1d0f9a2e5ad