[INFO] cloning repository https://github.com/jdroenner/engine_x
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jdroenner/engine_x" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdroenner%2Fengine_x", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdroenner%2Fengine_x'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ccad95c0dfdd7e7d4fab944c7169f23cd3b1c198
[INFO] documenting jdroenner/engine_x against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjdroenner%2Fengine_x" "/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/jdroenner/engine_x on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jdroenner/engine_x
[INFO] finished tweaking git repo https://github.com/jdroenner/engine_x
[INFO] tweaked toml for git repo https://github.com/jdroenner/engine_x written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jdroenner/engine_x already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ghost v0.1.2
[INFO] [stderr]   Downloaded typetag-impl v0.1.5
[INFO] [stderr]   Downloaded inventory-impl v0.1.7
[INFO] [stderr]   Downloaded inventory v0.1.7
[INFO] [stderr]   Downloaded typetag v0.1.5
[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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", 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] 1a70e31943f49a865d04dd5dfc8454258d9f8516a9b8255ed97e4ebd4368e770
[INFO] running `Command { std: "docker" "start" "-a" "1a70e31943f49a865d04dd5dfc8454258d9f8516a9b8255ed97e4ebd4368e770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a70e31943f49a865d04dd5dfc8454258d9f8516a9b8255ed97e4ebd4368e770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a70e31943f49a865d04dd5dfc8454258d9f8516a9b8255ed97e4ebd4368e770", kill_on_drop: false }`
[INFO] [stdout] 1a70e31943f49a865d04dd5dfc8454258d9f8516a9b8255ed97e4ebd4368e770
[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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] f72a78cbaf99b748acd6600a6340df8ab2e2eda378f93d5cf7f3d44ba03abd8e
[INFO] running `Command { std: "docker" "start" "-a" "f72a78cbaf99b748acd6600a6340df8ab2e2eda378f93d5cf7f3d44ba03abd8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling inventory v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling ctor v0.1.15
[INFO] [stderr]    Compiling inventory-impl v0.1.7
[INFO] [stderr]    Compiling typetag-impl v0.1.5
[INFO] [stderr]     Checking erased-serde v0.3.12
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking typetag v0.1.5
[INFO] [stderr]  Documenting engine2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking engine2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.01s
[INFO] running `Command { std: "docker" "inspect" "f72a78cbaf99b748acd6600a6340df8ab2e2eda378f93d5cf7f3d44ba03abd8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f72a78cbaf99b748acd6600a6340df8ab2e2eda378f93d5cf7f3d44ba03abd8e", kill_on_drop: false }`
[INFO] [stdout] f72a78cbaf99b748acd6600a6340df8ab2e2eda378f93d5cf7f3d44ba03abd8e
[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" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 098575d2a8342b3a6f60a72cc0e6628f10ab38d30136d5ad6163c35d8a75d49f
[INFO] running `Command { std: "docker" "start" "-a" "098575d2a8342b3a6f60a72cc0e6628f10ab38d30136d5ad6163c35d8a75d49f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling inventory v0.1.7
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling inventory-impl v0.1.7
[INFO] [stderr]    Compiling ctor v0.1.15
[INFO] [stderr]    Compiling typetag-impl v0.1.5
[INFO] [stderr]     Checking erased-serde v0.3.12
[INFO] [stderr]     Checking typetag v0.1.5
[INFO] [stderr]  Documenting engine2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "098575d2a8342b3a6f60a72cc0e6628f10ab38d30136d5ad6163c35d8a75d49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "098575d2a8342b3a6f60a72cc0e6628f10ab38d30136d5ad6163c35d8a75d49f", kill_on_drop: false }`
[INFO] [stdout] 098575d2a8342b3a6f60a72cc0e6628f10ab38d30136d5ad6163c35d8a75d49f