[INFO] fetching crate econf 0.1.1...
[INFO] documenting econf-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate econf 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate econf 0.1.1 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 econf 0.1.1
[INFO] finished tweaking crates.io crate econf 0.1.1
[INFO] tweaked toml for crates.io crate econf 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate econf 0.1.1 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 econf-derive v0.1.0
[INFO] [stderr]   Downloaded parse_duration v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 781c3b8bb95c685047e7505f22227ba3af44fc423571bbb90ee491ea6408dd0c
[INFO] running `Command { std: "docker" "start" "-a" "781c3b8bb95c685047e7505f22227ba3af44fc423571bbb90ee491ea6408dd0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "781c3b8bb95c685047e7505f22227ba3af44fc423571bbb90ee491ea6408dd0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "781c3b8bb95c685047e7505f22227ba3af44fc423571bbb90ee491ea6408dd0c", kill_on_drop: false }`
[INFO] [stdout] 781c3b8bb95c685047e7505f22227ba3af44fc423571bbb90ee491ea6408dd0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 83191605b323448e2915111c928a83ce2895cb50212ff0184f100485cb136c83
[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" "83191605b323448e2915111c928a83ce2895cb50212ff0184f100485cb136c83", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]    Compiling econf-derive v0.1.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking parse_duration v1.0.1
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]  Documenting econf v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.37s
[INFO] running `Command { std: "docker" "inspect" "83191605b323448e2915111c928a83ce2895cb50212ff0184f100485cb136c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83191605b323448e2915111c928a83ce2895cb50212ff0184f100485cb136c83", kill_on_drop: false }`
[INFO] [stdout] 83191605b323448e2915111c928a83ce2895cb50212ff0184f100485cb136c83