[INFO] fetching crate mdbook-classy 0.1.0...
[INFO] checking mdbook-classy-0.1.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate mdbook-classy 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mdbook-classy 0.1.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-classy 0.1.0
[INFO] finished tweaking crates.io crate mdbook-classy 0.1.0
[INFO] tweaked toml for crates.io crate mdbook-classy 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mdbook-classy 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] 3325a393b8c310f29225da9869a86ed15fe0edd083d1a1ea8426414e3e5c5db6
[INFO] running `Command { std: "docker" "start" "-a" "3325a393b8c310f29225da9869a86ed15fe0edd083d1a1ea8426414e3e5c5db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3325a393b8c310f29225da9869a86ed15fe0edd083d1a1ea8426414e3e5c5db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3325a393b8c310f29225da9869a86ed15fe0edd083d1a1ea8426414e3e5c5db6", kill_on_drop: false }`
[INFO] [stdout] 3325a393b8c310f29225da9869a86ed15fe0edd083d1a1ea8426414e3e5c5db6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTFLAGS=--cap-lints=forbid" "-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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fb7d43500bc3998455862d41cebe6102efc179b86210d78c97a7d37c56c465a
[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" "7fb7d43500bc3998455862d41cebe6102efc179b86210d78c97a7d37c56c465a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking bytes v0.5.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking urlencoding v1.1.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking gitignore v1.0.6
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking pulldown-cmark v0.7.1
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v4.0.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking headers v0.3.2
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking handlebars v3.0.1
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking elasticlunr-rs v2.3.8
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking tokio-tungstenite v0.10.1
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking xml5ever v0.16.1
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking ammonia v3.1.0
[INFO] [stderr]     Checking warp v0.2.3
[INFO] [stderr]     Checking mdbook v0.4.0
[INFO] [stderr]     Checking mdbook-classy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 38s
[INFO] running `Command { std: "docker" "inspect" "7fb7d43500bc3998455862d41cebe6102efc179b86210d78c97a7d37c56c465a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fb7d43500bc3998455862d41cebe6102efc179b86210d78c97a7d37c56c465a", kill_on_drop: false }`
[INFO] [stdout] 7fb7d43500bc3998455862d41cebe6102efc179b86210d78c97a7d37c56c465a