[INFO] fetching crate howto-cli 0.4.0...
[INFO] documenting howto-cli-0.4.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate howto-cli 0.4.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate howto-cli 0.4.0 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 howto-cli 0.4.0
[INFO] finished tweaking crates.io crate howto-cli 0.4.0
[INFO] tweaked toml for crates.io crate howto-cli 0.4.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate howto-cli 0.4.0 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 js-sys v0.3.33
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.56
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.56
[INFO] [stderr]   Downloaded web-sys v0.3.33
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.56
[INFO] [stderr]   Downloaded reqwest v0.10.0
[INFO] [stderr]   Downloaded scraper v0.10.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.56
[INFO] [stderr]   Downloaded wasm-bindgen-webidl v0.2.56
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.56
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.6
[INFO] [stderr]   Downloaded howto 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-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5210079a6b0cb679560c167e1fc138425f9ec5762ba8286314e7b5e7a78783f
[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" "d5210079a6b0cb679560c167e1fc138425f9ec5762ba8286314e7b5e7a78783f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5210079a6b0cb679560c167e1fc138425f9ec5762ba8286314e7b5e7a78783f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5210079a6b0cb679560c167e1fc138425f9ec5762ba8286314e7b5e7a78783f", kill_on_drop: false }`
[INFO] [stdout] d5210079a6b0cb679560c167e1fc138425f9ec5762ba8286314e7b5e7a78783f
[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-2020-08-29" "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] f492e27d398e5ba466a74dc778fbe51adc6c900eb9f2a3115e5bded82ea604bb
[INFO] running `Command { std: "docker" "start" "-a" "f492e27d398e5ba466a74dc778fbe51adc6c900eb9f2a3115e5bded82ea604bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]     Checking futures-sink v0.3.1
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]     Checking futures-task v0.3.1
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]     Checking pin-project-lite v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]    Compiling openssl v0.10.26
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking ego-tree v0.6.2
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]     Checking futures-channel v0.3.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking unicode-normalization v0.1.11
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]     Checking mime_guess v2.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling html5ever v0.22.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]    Compiling cssparser v0.25.9
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking hyper v0.13.1
[INFO] [stderr]     Checking scraper v0.10.1
[INFO] [stderr]     Checking hyper-tls v0.4.0
[INFO] [stderr]     Checking reqwest v0.10.0
[INFO] [stderr]     Checking howto v0.4.0
[INFO] [stderr]  Documenting howto-cli v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 12s
[INFO] running `Command { std: "docker" "inspect" "f492e27d398e5ba466a74dc778fbe51adc6c900eb9f2a3115e5bded82ea604bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f492e27d398e5ba466a74dc778fbe51adc6c900eb9f2a3115e5bded82ea604bb", kill_on_drop: false }`
[INFO] [stdout] f492e27d398e5ba466a74dc778fbe51adc6c900eb9f2a3115e5bded82ea604bb