[INFO] fetching crate twistrs 0.1.3-beta...
[INFO] documenting twistrs-0.1.3-beta against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate twistrs 0.1.3-beta into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate twistrs 0.1.3-beta on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate twistrs 0.1.3-beta
[INFO] finished tweaking crates.io crate twistrs 0.1.3-beta
[INFO] tweaked toml for crates.io crate twistrs 0.1.3-beta written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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 phf_macros v0.8.0
[INFO] [stderr]   Downloaded phf v0.8.0
[INFO] [stderr]   Downloaded winutil v0.1.1
[INFO] [stderr]   Downloaded phf_generator v0.8.0
[INFO] [stderr]   Downloaded punycode v0.4.1
[INFO] [stderr]   Downloaded fast_chemail v0.9.6
[INFO] [stderr]   Downloaded async-io v1.1.10
[INFO] [stderr]   Downloaded publicsuffix v1.5.4
[INFO] [stderr]   Downloaded async-smtp v0.3.4
[INFO] [stderr]   Downloaded bufstream v0.1.4
[INFO] [stderr]   Downloaded rand_pcg v0.2.1
[INFO] [stderr]   Downloaded async-global-executor v1.4.0
[INFO] [stderr]   Downloaded wepoll-sys v3.0.0
[INFO] [stderr]   Downloaded polling v2.0.2
[INFO] [stderr]   Downloaded phf_shared v0.8.0
[INFO] [stderr]   Downloaded hostname v0.1.5
[INFO] [stderr]   Downloaded lexical-core v0.7.4
[INFO] [stderr]   Downloaded async-std v1.6.5
[INFO] [stderr]   Downloaded ascii_utils v0.9.3
[INFO] [stderr]   Downloaded fancy-regex v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a948008fc7188d88f0a786202409ccd635def7c78ccd33fd937f920c0b063248
[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" "a948008fc7188d88f0a786202409ccd635def7c78ccd33fd937f920c0b063248", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a948008fc7188d88f0a786202409ccd635def7c78ccd33fd937f920c0b063248", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a948008fc7188d88f0a786202409ccd635def7c78ccd33fd937f920c0b063248", kill_on_drop: false }`
[INFO] [stdout] a948008fc7188d88f0a786202409ccd635def7c78ccd33fd937f920c0b063248
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] deb9691b98a73fb27e2199c2745eee6adc953cf2c5f9dff3d3f4807bd8b773ad
[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" "deb9691b98a73fb27e2199c2745eee6adc953cf2c5f9dff3d3f4807bd8b773ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]    Compiling punycode v0.4.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking futures-lite v1.11.1
[INFO] [stderr]     Checking fancy-regex v0.4.0
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling twistrs v0.1.3-beta (/opt/rustwide/workdir)
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking async-io v1.1.10
[INFO] [stderr]     Checking async-executor v1.3.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-global-executor v1.4.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking async-std v1.6.5
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]     Checking async-native-tls v0.3.3
[INFO] [stderr]     Checking async-smtp v0.3.4
[INFO] [stderr]  Documenting twistrs v0.1.3-beta (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.39s
[INFO] running `Command { std: "docker" "inspect" "deb9691b98a73fb27e2199c2745eee6adc953cf2c5f9dff3d3f4807bd8b773ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deb9691b98a73fb27e2199c2745eee6adc953cf2c5f9dff3d3f4807bd8b773ad", kill_on_drop: false }`
[INFO] [stdout] deb9691b98a73fb27e2199c2745eee6adc953cf2c5f9dff3d3f4807bd8b773ad
