[INFO] fetching crate ftp-client 0.1.2...
[INFO] documenting ftp-client-0.1.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate ftp-client 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ftp-client 0.1.2 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 crates.io crate ftp-client 0.1.2
[INFO] finished tweaking crates.io crate ftp-client 0.1.2
[INFO] tweaked toml for crates.io crate ftp-client 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate ftp-client 0.1.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded synom v0.11.3
[INFO] [stderr]   Downloaded rand_chacha v0.2.1
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.6
[INFO] [stderr]   Downloaded quote v0.3.15
[INFO] [stderr]   Downloaded syn v1.0.11
[INFO] [stderr]   Downloaded derive_more v0.99.2
[INFO] [stderr]   Downloaded unicode-xid v0.0.4
[INFO] [stderr]   Downloaded once_cell v1.2.0
[INFO] [stderr]   Downloaded openssl v0.10.26
[INFO] [stderr]   Downloaded cc v1.0.47
[INFO] [stderr]   Downloaded rand v0.7.2
[INFO] [stderr]   Downloaded security-framework-sys v0.3.3
[INFO] [stderr]   Downloaded derive-error v0.0.4
[INFO] [stderr]   Downloaded openssl-sys v0.9.53
[INFO] [stderr]   Downloaded security-framework v0.3.4
[INFO] [stderr]   Downloaded syn v0.11.11
[INFO] [stderr]   Downloaded getrandom v0.1.13
[INFO] [stderr]   Downloaded c2-chacha v0.2.3
[INFO] [stderr]   Downloaded case v0.1.0
[INFO] [stderr]   Downloaded schannel v0.1.16
[INFO] [stderr]   Downloaded native-tls v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8ea1c820d8f2b3744428c586baf21c0388fccfe5c62ff355a853f220e53956af
[INFO] running `Command { std: "docker" "start" "-a" "8ea1c820d8f2b3744428c586baf21c0388fccfe5c62ff355a853f220e53956af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ea1c820d8f2b3744428c586baf21c0388fccfe5c62ff355a853f220e53956af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea1c820d8f2b3744428c586baf21c0388fccfe5c62ff355a853f220e53956af", kill_on_drop: false }`
[INFO] [stdout] 8ea1c820d8f2b3744428c586baf21c0388fccfe5c62ff355a853f220e53956af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 11910d82ea4b8852bc8e937d246b25cd1162f94425a93d235b9f24d3e8122a34
[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" "11910d82ea4b8852bc8e937d246b25cd1162f94425a93d235b9f24d3e8122a34", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling openssl v0.10.26
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling derive-error v0.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]  Documenting ftp-client v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.12s
[INFO] running `Command { std: "docker" "inspect" "11910d82ea4b8852bc8e937d246b25cd1162f94425a93d235b9f24d3e8122a34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11910d82ea4b8852bc8e937d246b25cd1162f94425a93d235b9f24d3e8122a34", kill_on_drop: false }`
[INFO] [stdout] 11910d82ea4b8852bc8e937d246b25cd1162f94425a93d235b9f24d3e8122a34