[INFO] fetching crate liblbfgs 0.0.15...
[INFO] documenting liblbfgs-0.0.15 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate liblbfgs 0.0.15 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate liblbfgs 0.0.15 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 liblbfgs 0.0.15
[INFO] finished tweaking crates.io crate liblbfgs 0.0.15
[INFO] tweaked toml for crates.io crate liblbfgs 0.0.15 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate liblbfgs 0.0.15 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 rustc-demangle v0.1.9
[INFO] [stderr]   Downloaded failure v0.1.3
[INFO] [stderr]   Downloaded memchr v2.1.1
[INFO] [stderr]   Downloaded backtrace v0.3.9
[INFO] [stderr]   Downloaded serde v1.0.80
[INFO] [stderr]   Downloaded cc v1.0.25
[INFO] [stderr]   Downloaded thread-scoped v1.0.2
[INFO] [stderr]   Downloaded regex v1.0.6
[INFO] [stderr]   Downloaded approx v0.3.0
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded failure_derive v0.1.3
[INFO] [stderr]   Downloaded log v0.4.5
[INFO] [stderr]   Downloaded regex-syntax v0.6.3
[INFO] [stderr]   Downloaded libc v0.2.42
[INFO] [stderr]   Downloaded criterion v0.2.5
[INFO] [stderr]   Downloaded term v0.5.1
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded walkdir v2.2.7
[INFO] [stderr]   Downloaded criterion-plot v0.2.5
[INFO] [stderr]   Downloaded criterion-stats v0.2.5
[INFO] [stderr]   Downloaded handlebars v0.32.4
[INFO] [stderr]   Downloaded backtrace-sys v0.1.24
[INFO] [stderr]   Downloaded aho-corasick v0.6.9
[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] a18a4cfc8ed2b8524a19a47301fd67e168165083b0cc0d4e8b8a19ed28473dea
[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" "a18a4cfc8ed2b8524a19a47301fd67e168165083b0cc0d4e8b8a19ed28473dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a18a4cfc8ed2b8524a19a47301fd67e168165083b0cc0d4e8b8a19ed28473dea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a18a4cfc8ed2b8524a19a47301fd67e168165083b0cc0d4e8b8a19ed28473dea", kill_on_drop: false }`
[INFO] [stdout] a18a4cfc8ed2b8524a19a47301fd67e168165083b0cc0d4e8b8a19ed28473dea
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 054ca16ffc3f4b561ff2065e342f0035ea08d5647a6373387c8fcc1803a948d6
[INFO] running `Command { std: "docker" "start" "-a" "054ca16ffc3f4b561ff2065e342f0035ea08d5647a6373387c8fcc1803a948d6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]  Documenting liblbfgs v0.0.15 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `Command { std: "docker" "inspect" "054ca16ffc3f4b561ff2065e342f0035ea08d5647a6373387c8fcc1803a948d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054ca16ffc3f4b561ff2065e342f0035ea08d5647a6373387c8fcc1803a948d6", kill_on_drop: false }`
[INFO] [stdout] 054ca16ffc3f4b561ff2065e342f0035ea08d5647a6373387c8fcc1803a948d6