[INFO] fetching crate nature_db 0.14.1...
[INFO] documenting nature_db-0.14.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate nature_db 0.14.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nature_db 0.14.1 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 nature_db 0.14.1
[INFO] finished tweaking crates.io crate nature_db 0.14.1
[INFO] tweaked toml for crates.io crate nature_db 0.14.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] [stdout] 5497c61853ffa338449ab79e627dec5f2603f02b2719f59771c53c27f692ab62
[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" "5497c61853ffa338449ab79e627dec5f2603f02b2719f59771c53c27f692ab62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5497c61853ffa338449ab79e627dec5f2603f02b2719f59771c53c27f692ab62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5497c61853ffa338449ab79e627dec5f2603f02b2719f59771c53c27f692ab62", kill_on_drop: false }`
[INFO] [stdout] 5497c61853ffa338449ab79e627dec5f2603f02b2719f59771c53c27f692ab62
[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] 4b4524cd20e1fbefdf59443c2d74e05f25bebf938a0c0a5241830f6edb62e499
[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" "4b4524cd20e1fbefdf59443c2d74e05f25bebf938a0c0a5241830f6edb62e499", kill_on_drop: false }`
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling const_fn v0.4.2
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking mio-named-pipes v0.1.7
[INFO] [stderr]     Checking lru_time_cache v0.10.0
[INFO] [stderr]    Compiling standback v0.2.10
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling time v0.2.17
[INFO] [stderr]    Compiling libz-sys v1.1.1
[INFO] [stderr]     Checking rust_decimal v1.7.0
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking bigdecimal v0.1.2
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking lexical v5.2.0
[INFO] [stderr]     Checking mysql_common v0.22.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking actix-rt v1.1.1
[INFO] [stderr]     Checking trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking actix-codec v0.2.0
[INFO] [stderr]     Checking mysql_async v0.23.1
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking actix-utils v1.0.6
[INFO] [stderr]     Checking trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]     Checking actix-connect v1.0.2
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking actix-http v1.0.1
[INFO] [stderr]     Checking actix v0.9.0
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.8
[INFO] [stderr]     Checking nature_common v0.14.1
[INFO] [stderr]  Documenting nature_db v0.14.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "4b4524cd20e1fbefdf59443c2d74e05f25bebf938a0c0a5241830f6edb62e499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b4524cd20e1fbefdf59443c2d74e05f25bebf938a0c0a5241830f6edb62e499", kill_on_drop: false }`
[INFO] [stdout] 4b4524cd20e1fbefdf59443c2d74e05f25bebf938a0c0a5241830f6edb62e499