[INFO] cloning repository https://github.com/jameslzhu/telescope
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jameslzhu/telescope" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameslzhu%2Ftelescope", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameslzhu%2Ftelescope'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec4111a0e25e9d6220ce9ac84b0b17addce90fc2
[INFO] documenting jameslzhu/telescope against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjameslzhu%2Ftelescope" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jameslzhu/telescope on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jameslzhu/telescope
[INFO] finished tweaking git repo https://github.com/jameslzhu/telescope
[INFO] tweaked toml for git repo https://github.com/jameslzhu/telescope written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/jameslzhu/telescope already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.6.2
[INFO] [stderr]   Downloaded derive-error-chain v0.11.0
[INFO] [stderr]   Downloaded float-cmp v0.2.4
[INFO] [stderr]   Downloaded combine v2.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] adfebcfd5d6e05a073e41f89a1bcd69963867d8b0626c032b576433d7fe8e231
[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" "adfebcfd5d6e05a073e41f89a1bcd69963867d8b0626c032b576433d7fe8e231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adfebcfd5d6e05a073e41f89a1bcd69963867d8b0626c032b576433d7fe8e231", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adfebcfd5d6e05a073e41f89a1bcd69963867d8b0626c032b576433d7fe8e231", kill_on_drop: false }`
[INFO] [stdout] adfebcfd5d6e05a073e41f89a1bcd69963867d8b0626c032b576433d7fe8e231
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0513c9e604053903b7be10e2d3ee08d02be6b706965fd251ceac9e6df8bab4e
[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" "c0513c9e604053903b7be10e2d3ee08d02be6b706965fd251ceac9e6df8bab4e", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.12
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking combine v2.5.1
[INFO] [stderr]     Checking itertools v0.6.2
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking float-cmp v0.2.4
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking quickcheck v0.4.1
[INFO] [stderr]    Compiling derive-error-chain v0.11.0
[INFO] [stderr]     Checking backtrace v0.3.3
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]  Documenting telescope v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.86s
[INFO] running `Command { std: "docker" "inspect" "c0513c9e604053903b7be10e2d3ee08d02be6b706965fd251ceac9e6df8bab4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0513c9e604053903b7be10e2d3ee08d02be6b706965fd251ceac9e6df8bab4e", kill_on_drop: false }`
[INFO] [stdout] c0513c9e604053903b7be10e2d3ee08d02be6b706965fd251ceac9e6df8bab4e