[INFO] fetching crate libunftp 0.11.2...
[INFO] documenting libunftp-0.11.2 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate libunftp 0.11.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libunftp 0.11.2 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libunftp 0.11.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate libunftp 0.11.2
[INFO] tweaked toml for crates.io crate libunftp 0.11.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate libunftp 0.11.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88d9eed4ccd6e2da2d926ee33f51785541ca312ad5078c4de188016b362e2eed
[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" "88d9eed4ccd6e2da2d926ee33f51785541ca312ad5078c4de188016b362e2eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88d9eed4ccd6e2da2d926ee33f51785541ca312ad5078c4de188016b362e2eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d9eed4ccd6e2da2d926ee33f51785541ca312ad5078c4de188016b362e2eed", kill_on_drop: false }`
[INFO] [stdout] 88d9eed4ccd6e2da2d926ee33f51785541ca312ad5078c4de188016b362e2eed
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4405f3b2b3abefed8db7e1a8d60e5c306b8a15626f01c686a27996e9c83950cd
[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" "4405f3b2b3abefed8db7e1a8d60e5c306b8a15626f01c686a27996e9c83950cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-nested v0.1.5
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling prometheus v0.9.0
[INFO] [stderr]     Checking std_prelude v0.2.12
[INFO] [stderr]    Compiling ring v0.16.14
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]     Checking crossbeam-queue v0.2.2
[INFO] [stderr]     Checking stfu8 v0.2.4
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking slog-scope v4.3.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking slog-stdlog v4.0.0
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking chrono v0.4.13
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.20
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking proxy-protocol v0.1.1
[INFO] [stderr]     Checking tracing v0.1.15
[INFO] [stderr]     Checking pin-project v0.4.20
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking path_abs v0.5.0
[INFO] [stderr]     Checking tokio-rustls v0.13.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]  Documenting libunftp v0.11.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.28s
[INFO] running `Command { std: "docker" "inspect" "4405f3b2b3abefed8db7e1a8d60e5c306b8a15626f01c686a27996e9c83950cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4405f3b2b3abefed8db7e1a8d60e5c306b8a15626f01c686a27996e9c83950cd", kill_on_drop: false }`
[INFO] [stdout] 4405f3b2b3abefed8db7e1a8d60e5c306b8a15626f01c686a27996e9c83950cd