[INFO] fetching crate file_transfer 0.1.1...
[INFO] documenting file_transfer-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate file_transfer 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate file_transfer 0.1.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate file_transfer 0.1.1
[INFO] finished tweaking crates.io crate file_transfer 0.1.1
[INFO] tweaked toml for crates.io crate file_transfer 0.1.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate file_transfer 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2022-05-20" "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] f9f0faa93db49459c79cef3fad553b75cefaea9d09365e142ca290535c35b6a9
[INFO] running `Command { std: "docker" "start" "-a" "f9f0faa93db49459c79cef3fad553b75cefaea9d09365e142ca290535c35b6a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f0faa93db49459c79cef3fad553b75cefaea9d09365e142ca290535c35b6a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9f0faa93db49459c79cef3fad553b75cefaea9d09365e142ca290535c35b6a9", kill_on_drop: false }`
[INFO] [stdout] f9f0faa93db49459c79cef3fad553b75cefaea9d09365e142ca290535c35b6a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2022-05-20" "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] 9b28450a24abdf81f8447582b50281fedd6338b71911275a3746f783284fc8ca
[INFO] running `Command { std: "docker" "start" "-a" "9b28450a24abdf81f8447582b50281fedd6338b71911275a3746f783284fc8ca", kill_on_drop: false }`
[INFO] [stderr]     Checking file_transfer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting file_transfer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/ftp.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/ftp.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `Command { std: "docker" "inspect" "9b28450a24abdf81f8447582b50281fedd6338b71911275a3746f783284fc8ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b28450a24abdf81f8447582b50281fedd6338b71911275a3746f783284fc8ca", kill_on_drop: false }`
[INFO] [stdout] 9b28450a24abdf81f8447582b50281fedd6338b71911275a3746f783284fc8ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 1da779dee7e10d21a92307a00bd4526961ffb2b50b8757c2e9fa74e9acdd7da2
[INFO] running `Command { std: "docker" "start" "-a" "1da779dee7e10d21a92307a00bd4526961ffb2b50b8757c2e9fa74e9acdd7da2", kill_on_drop: false }`
[INFO] [stderr]  Documenting file_transfer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "1da779dee7e10d21a92307a00bd4526961ffb2b50b8757c2e9fa74e9acdd7da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1da779dee7e10d21a92307a00bd4526961ffb2b50b8757c2e9fa74e9acdd7da2", kill_on_drop: false }`
[INFO] [stdout] 1da779dee7e10d21a92307a00bd4526961ffb2b50b8757c2e9fa74e9acdd7da2