[INFO] fetching crate ief 0.0.2...
[INFO] documenting ief-0.0.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate ief 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ief 0.0.2 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 ief 0.0.2
[INFO] finished tweaking crates.io crate ief 0.0.2
[INFO] tweaked toml for crates.io crate ief 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate ief 0.0.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded scroll_derive v0.10.1
[INFO] [stderr]   Downloaded scroll v0.10.1
[INFO] [stderr]   Downloaded cpp_demangle v0.2.14
[INFO] [stderr]   Downloaded plain v0.2.3
[INFO] [stderr]   Downloaded aho-corasick v0.7.8
[INFO] [stderr]   Downloaded ignore v0.4.11
[INFO] [stderr]   Downloaded globset v0.4.4
[INFO] [stderr]   Downloaded goblin v0.2.0
[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] 10da7e4c68cc45abf60aa5fc6d6f4d19aa4263845e1170d9ce52c30ab3ef2ae2
[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" "10da7e4c68cc45abf60aa5fc6d6f4d19aa4263845e1170d9ce52c30ab3ef2ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10da7e4c68cc45abf60aa5fc6d6f4d19aa4263845e1170d9ce52c30ab3ef2ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10da7e4c68cc45abf60aa5fc6d6f4d19aa4263845e1170d9ce52c30ab3ef2ae2", kill_on_drop: false }`
[INFO] [stdout] 10da7e4c68cc45abf60aa5fc6d6f4d19aa4263845e1170d9ce52c30ab3ef2ae2
[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] [stdout] c6f68ab3e116b8a704c22358dc3716373a017e050bc721ca9336fb50d4b0147e
[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" "c6f68ab3e116b8a704c22358dc3716373a017e050bc721ca9336fb50d4b0147e", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking bstr v0.2.11
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling cpp_demangle v0.2.14
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking ignore v0.4.11
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]     Checking goblin v0.2.0
[INFO] [stderr]  Documenting ief v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.85s
[INFO] running `Command { std: "docker" "inspect" "c6f68ab3e116b8a704c22358dc3716373a017e050bc721ca9336fb50d4b0147e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6f68ab3e116b8a704c22358dc3716373a017e050bc721ca9336fb50d4b0147e", kill_on_drop: false }`
[INFO] [stdout] c6f68ab3e116b8a704c22358dc3716373a017e050bc721ca9336fb50d4b0147e