[INFO] fetching crate snowchains 0.5.2...
[INFO] documenting snowchains-0.5.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate snowchains 0.5.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate snowchains 0.5.2 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 snowchains 0.5.2
[INFO] finished tweaking crates.io crate snowchains 0.5.2
[INFO] tweaked toml for crates.io crate snowchains 0.5.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate snowchains 0.5.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dhall_proc_macros v0.5.0
[INFO] [stderr]   Downloaded human-size v0.4.1
[INFO] [stderr]   Downloaded pretty v0.5.2
[INFO] [stderr]   Downloaded dhall v0.6.0
[INFO] [stderr]   Downloaded serde_dhall v0.6.0
[INFO] [stderr]   Downloaded abnf v0.6.1
[INFO] [stderr]   Downloaded easy-ext v0.2.2
[INFO] [stderr]   Downloaded abnf_to_pest v0.5.0
[INFO] [stderr]   Downloaded pest_consume_macros v1.0.5
[INFO] [stderr]   Downloaded snowchains_core v0.5.0
[INFO] [stderr]   Downloaded pest_consume v1.0.5
[INFO] [stderr]   Downloaded annotate-snippets v0.7.0
[INFO] [stderr]   Downloaded az v1.0.0
[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] e2fa1eac2d4ce5220e322c8c8b37582ee89036b7cb69a6766176a0525106fd9d
[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" "e2fa1eac2d4ce5220e322c8c8b37582ee89036b7cb69a6766176a0525106fd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2fa1eac2d4ce5220e322c8c8b37582ee89036b7cb69a6766176a0525106fd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2fa1eac2d4ce5220e322c8c8b37582ee89036b7cb69a6766176a0525106fd9d", kill_on_drop: false }`
[INFO] [stdout] e2fa1eac2d4ce5220e322c8c8b37582ee89036b7cb69a6766176a0525106fd9d
[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] 19fa6c7a6f68661426ed9d18b815adb2fe6412d7a60620a5b3f8a7c0f6601fa3
[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" "19fa6c7a6f68661426ed9d18b815adb2fe6412d7a60620a5b3f8a7c0f6601fa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling typed-arena v1.7.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking half v1.6.0
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking ego-tree v0.6.2
[INFO] [stderr]     Checking annotate-snippets v0.7.0
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking rprompt v1.0.5
[INFO] [stderr]     Checking az v1.0.0
[INFO] [stderr]     Checking shell-escape v0.1.5
[INFO] [stderr]     Checking human-size v0.4.1
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling standback v0.2.9
[INFO] [stderr]     Checking tracing-core v0.1.14
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling cookie v0.14.2
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking heck v0.3.1
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling pretty v0.5.2
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking termios v0.3.2
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[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking rpassword v5.0.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking fwdansi v1.1.0
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking ring v0.16.15
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling pest_consume_macros v1.0.5
[INFO] [stderr]    Compiling strum_macros v0.19.2
[INFO] [stderr]    Compiling easy-ext v0.2.2
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling dhall_proc_macros v0.5.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking serde v1.0.115
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.9
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking strum v0.19.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling abnf v0.6.1
[INFO] [stderr]     Checking tokio-rustls v0.14.0
[INFO] [stderr]     Checking structopt v0.3.16
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking pest_consume v1.0.5
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking humantime-serde v1.0.0
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]    Compiling abnf_to_pest v0.5.0
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking cookie_store v0.12.0
[INFO] [stderr]     Checking prettytable-rs v0.8.0
[INFO] [stderr]    Compiling dhall v0.6.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking scraper v0.12.0
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking hyper-rustls v0.21.0
[INFO] [stderr]     Checking reqwest v0.10.7
[INFO] [stderr]     Checking snowchains_core v0.5.0
[INFO] [stderr]     Checking serde_dhall v0.6.0
[INFO] [stderr]  Documenting snowchains v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 16s
[INFO] running `Command { std: "docker" "inspect" "19fa6c7a6f68661426ed9d18b815adb2fe6412d7a60620a5b3f8a7c0f6601fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19fa6c7a6f68661426ed9d18b815adb2fe6412d7a60620a5b3f8a7c0f6601fa3", kill_on_drop: false }`
[INFO] [stdout] 19fa6c7a6f68661426ed9d18b815adb2fe6412d7a60620a5b3f8a7c0f6601fa3