[INFO] fetching crate nu-value-ext 0.18.1...
[INFO] documenting nu-value-ext-0.18.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate nu-value-ext 0.18.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nu-value-ext 0.18.1 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 nu-value-ext 0.18.1
[INFO] finished tweaking crates.io crate nu-value-ext 0.18.1
[INFO] tweaked toml for crates.io crate nu-value-ext 0.18.1 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] e540c4a8f399f464ead32ae76566a1ebf4b70f27b5b98fcefe7ffc23b2fb1432
[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" "e540c4a8f399f464ead32ae76566a1ebf4b70f27b5b98fcefe7ffc23b2fb1432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e540c4a8f399f464ead32ae76566a1ebf4b70f27b5b98fcefe7ffc23b2fb1432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e540c4a8f399f464ead32ae76566a1ebf4b70f27b5b98fcefe7ffc23b2fb1432", kill_on_drop: false }`
[INFO] [stdout] e540c4a8f399f464ead32ae76566a1ebf4b70f27b5b98fcefe7ffc23b2fb1432
[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] 81c3416592f184914c7fa15a882dc77de11b362db1f7e9557faff912618cbb52
[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" "81c3416592f184914c7fa15a882dc77de11b362db1f7e9557faff912618cbb52", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling ctor v0.1.15
[INFO] [stderr]    Compiling inventory-impl v0.1.8
[INFO] [stderr]    Compiling ghost v0.1.2
[INFO] [stderr]    Compiling typetag-impl v0.1.5
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking shellexpand v2.0.0
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking inventory v0.1.8
[INFO] [stderr]     Checking codespan-reporting v0.9.5
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking erased-serde v0.3.12
[INFO] [stderr]     Checking rust-stemmers v1.2.0
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking typetag v0.1.5
[INFO] [stderr]     Checking nu-source v0.18.1
[INFO] [stderr]     Checking bigdecimal v0.1.2
[INFO] [stderr]     Checking nu-errors v0.18.1
[INFO] [stderr]     Checking natural v0.5.0
[INFO] [stderr]     Checking nu-protocol v0.18.1
[INFO] [stderr]     Checking nu-parser v0.18.1
[INFO] [stderr]  Documenting nu-value-ext v0.18.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.23s
[INFO] running `Command { std: "docker" "inspect" "81c3416592f184914c7fa15a882dc77de11b362db1f7e9557faff912618cbb52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c3416592f184914c7fa15a882dc77de11b362db1f7e9557faff912618cbb52", kill_on_drop: false }`
[INFO] [stdout] 81c3416592f184914c7fa15a882dc77de11b362db1f7e9557faff912618cbb52