[INFO] fetching crate postmill 0.2.7...
[INFO] documenting postmill-0.2.7 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate postmill 0.2.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate postmill 0.2.7 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 postmill 0.2.7
[INFO] finished tweaking crates.io crate postmill 0.2.7
[INFO] tweaked toml for crates.io crate postmill 0.2.7 written to /workspace/builds/worker-0/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cookie v0.12.0
[INFO] [stderr]   Downloaded string_cache_shared v0.3.0
[INFO] [stderr]   Downloaded futf v0.1.4
[INFO] [stderr]   Downloaded utf-8 v0.7.5
[INFO] [stderr]   Downloaded precomputed-hash v0.1.1
[INFO] [stderr]   Downloaded mac v0.1.1
[INFO] [stderr]   Downloaded tendril v0.4.1
[INFO] [stderr]   Downloaded publicsuffix v1.5.4
[INFO] [stderr]   Downloaded cookie v0.11.3
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.4
[INFO] [stderr]   Downloaded html5ever v0.23.0
[INFO] [stderr]   Downloaded try_from v0.3.2
[INFO] [stderr]   Downloaded string_cache v0.7.5
[INFO] [stderr]   Downloaded cookie_store v0.7.0
[INFO] [stderr]   Downloaded reqwest v0.9.24
[INFO] [stderr]   Downloaded select v0.4.3
[INFO] [stderr]   Downloaded markup5ever v0.8.1
[INFO] [stderr]   Downloaded hyper-tls v0.3.2
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.4
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6a835d6c321725c6beaf1c30d03ef2ed2f94b16be700476256d54cf644e8cab
[INFO] running `Command { std: "docker" "start" "-a" "a6a835d6c321725c6beaf1c30d03ef2ed2f94b16be700476256d54cf644e8cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6a835d6c321725c6beaf1c30d03ef2ed2f94b16be700476256d54cf644e8cab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a835d6c321725c6beaf1c30d03ef2ed2f94b16be700476256d54cf644e8cab", kill_on_drop: false }`
[INFO] [stdout] a6a835d6c321725c6beaf1c30d03ef2ed2f94b16be700476256d54cf644e8cab
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6bb4e76bcd9c7b341a24e0a3ae31fcb53d0b9951d8442dc15e0b20a951cbd4e3
[INFO] running `Command { std: "docker" "start" "-a" "6bb4e76bcd9c7b341a24e0a3ae31fcb53d0b9951d8442dc15e0b20a951cbd4e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking cookie v0.11.3
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]    Compiling html5ever v0.23.0
[INFO] [stderr]    Compiling markup5ever v0.8.1
[INFO] [stderr]     Checking select v0.4.3
[INFO] [stderr]  Documenting postmill v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.42s
[INFO] running `Command { std: "docker" "inspect" "6bb4e76bcd9c7b341a24e0a3ae31fcb53d0b9951d8442dc15e0b20a951cbd4e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb4e76bcd9c7b341a24e0a3ae31fcb53d0b9951d8442dc15e0b20a951cbd4e3", kill_on_drop: false }`
[INFO] [stdout] 6bb4e76bcd9c7b341a24e0a3ae31fcb53d0b9951d8442dc15e0b20a951cbd4e3