[INFO] cloning repository https://github.com/c0ppelius/mdbook-extension
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/c0ppelius/mdbook-extension" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc0ppelius%2Fmdbook-extension", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc0ppelius%2Fmdbook-extension'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d3dc54842d619241239b47d50907756ae66ec1b
[INFO] checking c0ppelius/mdbook-extension against try#1b0139f5bdae7328e6d232947a8112333bb44eeb for pr-93394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fc0ppelius%2Fmdbook-extension" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/c0ppelius/mdbook-extension on toolchain 1b0139f5bdae7328e6d232947a8112333bb44eeb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/c0ppelius/mdbook-extension
[INFO] finished tweaking git repo https://github.com/c0ppelius/mdbook-extension
[INFO] tweaked toml for git repo https://github.com/c0ppelius/mdbook-extension written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/c0ppelius/mdbook-extension already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xml5ever v0.16.2
[INFO] [stderr]   Downloaded opener v0.5.0
[INFO] [stderr]   Downloaded ammonia v3.1.2
[INFO] [stderr]   Downloaded gitignore v1.0.7
[INFO] [stderr]   Downloaded elasticlunr-rs v2.3.14
[INFO] [stderr]   Downloaded topological-sort v0.1.0
[INFO] [stderr]   Downloaded pulldown-cmark-to-cmark v7.1.1
[INFO] [stderr]   Downloaded mdbook v0.4.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f420f73dfbd7d3143f9d84c65bcfea4685c398b2eda29ce1577c3de5970a8d24
[INFO] running `Command { std: "docker" "start" "-a" "f420f73dfbd7d3143f9d84c65bcfea4685c398b2eda29ce1577c3de5970a8d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f420f73dfbd7d3143f9d84c65bcfea4685c398b2eda29ce1577c3de5970a8d24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f420f73dfbd7d3143f9d84c65bcfea4685c398b2eda29ce1577c3de5970a8d24", kill_on_drop: false }`
[INFO] [stdout] f420f73dfbd7d3143f9d84c65bcfea4685c398b2eda29ce1577c3de5970a8d24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1b0139f5bdae7328e6d232947a8112333bb44eeb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3aaa5bd412288a43faef521b62da7fe07a3f62521c40b216b7a581b85599c5d
[INFO] running `Command { std: "docker" "start" "-a" "d3aaa5bd412288a43faef521b62da7fe07a3f62521c40b216b7a581b85599c5d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking itoa v1.0.1
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[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling siphasher v0.3.9
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking utf-8 v0.7.6
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[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling serde_json v1.0.75
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling pulldown-cmark v0.9.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]     Checking regex-automata v0.1.10
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[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking fastrand v1.6.0
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking topological-sort v0.1.0
[INFO] [stderr]     Checking shlex v1.1.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking gitignore v1.0.7
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking opener v0.5.0
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking string_cache v0.8.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr] error: could not compile `serde_derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.133/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=0260299ded7f75ea -C extra-filename=-0260299ded7f75ea --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d937f1f82ffb437d.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-67e27136f08bcb92.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-d78b3b516c537e18.rlib --extern proc_macro --cap-lints allow --cap-lints=warn --cfg underscore_consts --cfg ptr_addr_of` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d3aaa5bd412288a43faef521b62da7fe07a3f62521c40b216b7a581b85599c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3aaa5bd412288a43faef521b62da7fe07a3f62521c40b216b7a581b85599c5d", kill_on_drop: false }`
[INFO] [stdout] d3aaa5bd412288a43faef521b62da7fe07a3f62521c40b216b7a581b85599c5d