[INFO] cloning repository https://github.com/teh-cmc/mdbook-singlepage
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teh-cmc/mdbook-singlepage" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteh-cmc%2Fmdbook-singlepage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteh-cmc%2Fmdbook-singlepage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d8f95f4f48a680b8413e45eab9a2680f5538d60c
[INFO] documenting teh-cmc/mdbook-singlepage against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteh-cmc%2Fmdbook-singlepage" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/teh-cmc/mdbook-singlepage 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 git repo https://github.com/teh-cmc/mdbook-singlepage
[INFO] finished tweaking git repo https://github.com/teh-cmc/mdbook-singlepage
[INFO] tweaked toml for git repo https://github.com/teh-cmc/mdbook-singlepage written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/teh-cmc/mdbook-singlepage 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 ammonia v3.0.0
[INFO] [stderr]   Downloaded toml v0.5.4
[INFO] [stderr]   Downloaded mdbook v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 8eb8f3dff534b0aee1168014aad8be6650a13449e2daebfbe42cd2db51c4b240
[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" "8eb8f3dff534b0aee1168014aad8be6650a13449e2daebfbe42cd2db51c4b240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8eb8f3dff534b0aee1168014aad8be6650a13449e2daebfbe42cd2db51c4b240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eb8f3dff534b0aee1168014aad8be6650a13449e2daebfbe42cd2db51c4b240", kill_on_drop: false }`
[INFO] [stdout] 8eb8f3dff534b0aee1168014aad8be6650a13449e2daebfbe42cd2db51c4b240
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] afcf3e617c0ada70a99797d29f26b1c5f354e9f4f3cf88c5f56dd2e36e63cc93
[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" "afcf3e617c0ada70a99797d29f26b1c5f354e9f4f3cf88c5f56dd2e36e63cc93", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking smallvec v0.6.12
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling unicode-segmentation v1.5.0
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking is-match v0.1.0
[INFO] [stderr]     Checking strum v0.15.0
[INFO] [stderr]     Checking open v1.3.2
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking gitignore v1.0.6
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]     Checking num_cpus v1.11.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking toml v0.5.4
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking notify v4.0.14
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling toml-query_derive v0.9.0
[INFO] [stderr]     Checking handlebars v2.0.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking toml-query v0.9.2
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]     Checking elasticlunr-rs v2.3.6
[INFO] [stderr]     Checking ammonia v3.0.0
[INFO] [stderr]     Checking mdbook v0.3.4
[INFO] [stderr]  Documenting mdbook-singlepage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 54s
[INFO] running `Command { std: "docker" "inspect" "afcf3e617c0ada70a99797d29f26b1c5f354e9f4f3cf88c5f56dd2e36e63cc93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afcf3e617c0ada70a99797d29f26b1c5f354e9f4f3cf88c5f56dd2e36e63cc93", kill_on_drop: false }`
[INFO] [stdout] afcf3e617c0ada70a99797d29f26b1c5f354e9f4f3cf88c5f56dd2e36e63cc93