[INFO] cloning repository https://github.com/WiktorLidwin/RustDemo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WiktorLidwin/RustDemo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiktorLidwin%2FRustDemo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiktorLidwin%2FRustDemo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f23eeb8cec6885e71591a11c79cb8533a904d842
[INFO] documenting WiktorLidwin/RustDemo 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%2FWiktorLidwin%2FRustDemo" "/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/WiktorLidwin/RustDemo 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/WiktorLidwin/RustDemo
[INFO] finished tweaking git repo https://github.com/WiktorLidwin/RustDemo
[INFO] tweaked toml for git repo https://github.com/WiktorLidwin/RustDemo written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/WiktorLidwin/RustDemo 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 iron v0.6.1
[INFO] [stderr]   Downloaded syn v1.0.50
[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" "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] 0a348c028573fc172fa42c0c36a6d15d251d99ca1077c582fefaefbecfa67584
[INFO] running `Command { std: "docker" "start" "-a" "0a348c028573fc172fa42c0c36a6d15d251d99ca1077c582fefaefbecfa67584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a348c028573fc172fa42c0c36a6d15d251d99ca1077c582fefaefbecfa67584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a348c028573fc172fa42c0c36a6d15d251d99ca1077c582fefaefbecfa67584", kill_on_drop: false }`
[INFO] [stdout] 0a348c028573fc172fa42c0c36a6d15d251d99ca1077c582fefaefbecfa67584
[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" "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] d7afefc8caa7a26b3eaf999164fb6bdf84f0fe2907aea8d534865b06c21252c8
[INFO] running `Command { std: "docker" "start" "-a" "d7afefc8caa7a26b3eaf999164fb6bdf84f0fe2907aea8d534865b06c21252c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]  Documenting server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.48s
[INFO] running `Command { std: "docker" "inspect" "d7afefc8caa7a26b3eaf999164fb6bdf84f0fe2907aea8d534865b06c21252c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7afefc8caa7a26b3eaf999164fb6bdf84f0fe2907aea8d534865b06c21252c8", kill_on_drop: false }`
[INFO] [stdout] d7afefc8caa7a26b3eaf999164fb6bdf84f0fe2907aea8d534865b06c21252c8