[INFO] cloning repository https://github.com/4hiziri/tkfd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/4hiziri/tkfd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4hiziri%2Ftkfd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4hiziri%2Ftkfd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 548cc7c56f42eebc0a9fe0c30f90f5dcad2aec96
[INFO] documenting 4hiziri/tkfd 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%2F4hiziri%2Ftkfd" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/4hiziri/tkfd 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/4hiziri/tkfd
[INFO] finished tweaking git repo https://github.com/4hiziri/tkfd
[INFO] tweaked toml for git repo https://github.com/4hiziri/tkfd written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/4hiziri/tkfd 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 gcc v0.3.54
[INFO] [stderr]   Downloaded bytes v0.4.6
[INFO] [stderr]   Downloaded regex v0.2.7
[INFO] [stderr]   Downloaded atty v0.2.8
[INFO] [stderr]   Downloaded libc v0.2.39
[INFO] [stderr]   Downloaded termcolor v0.3.5
[INFO] [stderr]   Downloaded env_logger v0.5.4
[INFO] [stderr]   Downloaded regex-syntax v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 7ac2b8ddd0f3d07b5c3b3103947f2f8d5dea4c7517015fe45ef1959147b17078
[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" "7ac2b8ddd0f3d07b5c3b3103947f2f8d5dea4c7517015fe45ef1959147b17078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ac2b8ddd0f3d07b5c3b3103947f2f8d5dea4c7517015fe45ef1959147b17078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac2b8ddd0f3d07b5c3b3103947f2f8d5dea4c7517015fe45ef1959147b17078", kill_on_drop: false }`
[INFO] [stdout] 7ac2b8ddd0f3d07b5c3b3103947f2f8d5dea4c7517015fe45ef1959147b17078
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e5f1971d1731d57b9c5a0ea5c4ca84ceb92218539bfca49339139888a929f65a
[INFO] running `Command { std: "docker" "start" "-a" "e5f1971d1731d57b9c5a0ea5c4ca84ceb92218539bfca49339139888a929f65a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking termcolor v0.3.5
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.5.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking regex v0.2.7
[INFO] [stderr]     Checking env_logger v0.5.4
[INFO] [stderr]  Documenting tkfd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.55s
[INFO] running `Command { std: "docker" "inspect" "e5f1971d1731d57b9c5a0ea5c4ca84ceb92218539bfca49339139888a929f65a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f1971d1731d57b9c5a0ea5c4ca84ceb92218539bfca49339139888a929f65a", kill_on_drop: false }`
[INFO] [stdout] e5f1971d1731d57b9c5a0ea5c4ca84ceb92218539bfca49339139888a929f65a