[INFO] fetching crate bench-trie 0.12.0...
[INFO] documenting bench-trie-0.12.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate bench-trie 0.12.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bench-trie 0.12.0 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 bench-trie 0.12.0
[INFO] finished tweaking crates.io crate bench-trie 0.12.0
[INFO] tweaked toml for crates.io crate bench-trie 0.12.0 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] [stderr]     Blocking waiting for file lock on package cache
[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 trie-root v0.12.4
[INFO] [stderr]   Downloaded trie-db v0.12.4
[INFO] [stderr]   Downloaded hash256-std-hasher v0.12.4
[INFO] [stderr]   Downloaded hash-db v0.12.4
[INFO] [stderr]   Downloaded keccak-hasher v0.12.4
[INFO] [stderr]   Downloaded elastic-array v0.10.3
[INFO] [stderr]   Downloaded malloc_size_of_derive v0.1.1
[INFO] [stderr]   Downloaded memory-db v0.12.4
[INFO] [stderr]   Downloaded susy-trie-standardmap v0.12.2
[INFO] [stderr]   Downloaded parity-util-mem v0.1.0
[INFO] [stderr]   Downloaded susy-codec v3.5.1
[INFO] [stderr]   Downloaded hashmap_core v0.1.11
[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] 885f1f31365ba0f78d132a2c7d35802a5f5c3d3e3130b63a031e7d1b587a892f
[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" "885f1f31365ba0f78d132a2c7d35802a5f5c3d3e3130b63a031e7d1b587a892f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "885f1f31365ba0f78d132a2c7d35802a5f5c3d3e3130b63a031e7d1b587a892f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "885f1f31365ba0f78d132a2c7d35802a5f5c3d3e3130b63a031e7d1b587a892f", kill_on_drop: false }`
[INFO] [stdout] 885f1f31365ba0f78d132a2c7d35802a5f5c3d3e3130b63a031e7d1b587a892f
[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] adbce7fc46ae172d1425388ca1c8392fc3451c0c84b807d17aea04b35dae0c12
[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" "adbce7fc46ae172d1425388ca1c8392fc3451c0c84b807d17aea04b35dae0c12", kill_on_drop: false }`
[INFO] [stderr]     Checking hash-db v0.12.4
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking hashmap_core v0.1.11
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling clear_on_drop v0.2.4
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking hash256-std-hasher v0.12.4
[INFO] [stderr]     Checking tiny-keccak v1.5.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking trie-root v0.12.4
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking keccak-hasher v0.12.4
[INFO] [stderr]     Checking elastic-array v0.10.3
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking trie-db v0.12.4
[INFO] [stderr]     Checking susy-codec v3.5.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]    Compiling malloc_size_of_derive v0.1.1
[INFO] [stderr]     Checking parity-util-mem v0.1.0
[INFO] [stderr]     Checking memory-db v0.12.4
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking susy-trie-standardmap v0.12.2
[INFO] [stderr]  Documenting bench-trie v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.26s
[INFO] running `Command { std: "docker" "inspect" "adbce7fc46ae172d1425388ca1c8392fc3451c0c84b807d17aea04b35dae0c12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adbce7fc46ae172d1425388ca1c8392fc3451c0c84b807d17aea04b35dae0c12", kill_on_drop: false }`
[INFO] [stdout] adbce7fc46ae172d1425388ca1c8392fc3451c0c84b807d17aea04b35dae0c12