[INFO] cloning repository https://github.com/renosyah/RustAndMongoDB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/renosyah/RustAndMongoDB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frenosyah%2FRustAndMongoDB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frenosyah%2FRustAndMongoDB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81e510534c00b770a66a6f89f8867fdf814b5687
[INFO] documenting renosyah/RustAndMongoDB 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%2Frenosyah%2FRustAndMongoDB" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/renosyah/RustAndMongoDB 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/renosyah/RustAndMongoDB
[INFO] finished tweaking git repo https://github.com/renosyah/RustAndMongoDB
[INFO] tweaked toml for git repo https://github.com/renosyah/RustAndMongoDB written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/renosyah/RustAndMongoDB 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 libc v0.2.35
[INFO] [stderr]   Downloaded winapi v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 51b6b07c9ed7e2564c72b03520ffdcf1d299b937d6d7f20791c359fbd536af00
[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" "51b6b07c9ed7e2564c72b03520ffdcf1d299b937d6d7f20791c359fbd536af00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51b6b07c9ed7e2564c72b03520ffdcf1d299b937d6d7f20791c359fbd536af00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51b6b07c9ed7e2564c72b03520ffdcf1d299b937d6d7f20791c359fbd536af00", kill_on_drop: false }`
[INFO] [stdout] 51b6b07c9ed7e2564c72b03520ffdcf1d299b937d6d7f20791c359fbd536af00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] a7c0c5160508e1e7b2115f514f4fec77b1a0bb6128403cfcb75349858b4cfd50
[INFO] running `Command { std: "docker" "start" "-a" "a7c0c5160508e1e7b2115f514f4fec77b1a0bb6128403cfcb75349858b4cfd50", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.35
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]     Checking linked-hash-map v0.5.0
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking scan_fmt v0.1.1
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking data-encoding v1.2.0
[INFO] [stderr]     Checking separator v0.3.1
[INFO] [stderr]     Checking semver v0.8.0
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking rand v0.3.20
[INFO] [stderr]     Checking hostname v0.1.4
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]     Checking textnonce v0.6.3
[INFO] [stderr]     Checking bson v0.10.0
[INFO] [stderr]     Checking mongodb v0.3.7
[INFO] [stderr]  Documenting RustAndMongoDB v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.64s
[INFO] running `Command { std: "docker" "inspect" "a7c0c5160508e1e7b2115f514f4fec77b1a0bb6128403cfcb75349858b4cfd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c0c5160508e1e7b2115f514f4fec77b1a0bb6128403cfcb75349858b4cfd50", kill_on_drop: false }`
[INFO] [stdout] a7c0c5160508e1e7b2115f514f4fec77b1a0bb6128403cfcb75349858b4cfd50