[INFO] cloning repository https://github.com/aRustyDev/mdbook-frontmatter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aRustyDev/mdbook-frontmatter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaRustyDev%2Fmdbook-frontmatter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaRustyDev%2Fmdbook-frontmatter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 33d34922daf325693995ce19c64f83b498962ac2
[INFO] testing aRustyDev/mdbook-frontmatter against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FaRustyDev%2Fmdbook-frontmatter" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aRustyDev/mdbook-frontmatter
[INFO] finished tweaking git repo https://github.com/aRustyDev/mdbook-frontmatter
[INFO] tweaked toml for git repo https://github.com/aRustyDev/mdbook-frontmatter written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aRustyDev/mdbook-frontmatter on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aRustyDev/mdbook-frontmatter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded notify-types v2.0.0
[INFO] [stderr]   Downloaded pulldown-cmark-escape v0.10.1
[INFO] [stderr]   Downloaded notify-debouncer-mini v0.6.0
[INFO] [stderr]   Downloaded topological-sort v0.2.2
[INFO] [stderr]   Downloaded notify v8.2.0
[INFO] [stderr]   Downloaded ryu v1.0.21
[INFO] [stderr]   Downloaded num-cmp v0.1.0
[INFO] [stderr]   Downloaded axum-core v0.5.5
[INFO] [stderr]   Downloaded pest_generator v2.8.4
[INFO] [stderr]   Downloaded iso8601 v0.6.3
[INFO] [stderr]   Downloaded web_atoms v0.1.3
[INFO] [stderr]   Downloaded cssparser v0.35.0
[INFO] [stderr]   Downloaded fancy-regex v0.13.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.10.3
[INFO] [stderr]   Downloaded jsonschema v0.18.3
[INFO] [stderr]   Downloaded pest v2.8.4
[INFO] [stderr]   Downloaded serde_json v1.0.146
[INFO] [stderr]   Downloaded portable-atomic v1.12.0
[INFO] [stderr]   Downloaded elasticlunr-rs v3.0.2
[INFO] [stderr]   Downloaded fraction v0.15.3
[INFO] [stderr]   Downloaded ammonia v4.1.2
[INFO] [stderr]   Downloaded clap_complete v4.5.62
[INFO] [stderr]   Downloaded ignore v0.4.25
[INFO] [stderr]   Downloaded pest_meta v2.8.4
[INFO] [stderr]   Downloaded html5ever v0.35.0
[INFO] [stderr]   Downloaded jiff-static v0.2.16
[INFO] [stderr]   Downloaded pest_derive v2.8.4
[INFO] [stderr]   Downloaded globset v0.4.18
[INFO] [stderr]   Downloaded markup5ever v0.35.0
[INFO] [stderr]   Downloaded match_token v0.35.0
[INFO] [stderr]   Downloaded terminal_size v0.4.3
[INFO] [stderr]   Downloaded env_filter v0.1.4
[INFO] [stderr]   Downloaded jiff v0.2.16
[INFO] [stderr]   Downloaded mdbook v0.4.52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e233e169b4af8dfdcd758d2328027a38416dd52f19b8e803b8a382d03eb3ec7
[INFO] running `Command { std: "docker" "start" "-a" "5e233e169b4af8dfdcd758d2328027a38416dd52f19b8e803b8a382d03eb3ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e233e169b4af8dfdcd758d2328027a38416dd52f19b8e803b8a382d03eb3ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e233e169b4af8dfdcd758d2328027a38416dd52f19b8e803b8a382d03eb3ec7", kill_on_drop: false }`
[INFO] [stdout] 5e233e169b4af8dfdcd758d2328027a38416dd52f19b8e803b8a382d03eb3ec7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e13b95c76195e8b266be9f3050beda02342030c76c1423a95ef9df2da1f8f936
[INFO] running `Command { std: "docker" "start" "-a" "e13b95c76195e8b266be9f3050beda02342030c76c1423a95ef9df2da1f8f936", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling itoa v1.0.16
[INFO] [stderr]    Compiling bytes v1.11.0
[INFO] [stderr]    Compiling bitflags v2.10.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling litemap v0.8.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling writeable v0.6.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]    Compiling find-msvc-tools v0.1.5
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling icu_properties_data v2.1.2
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling ryu v1.0.21
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling cc v1.2.50
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.146
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.75
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling pest v2.8.4
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling web_atoms v0.1.3
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling clap_lex v0.7.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling openssl-probe v0.1.6
[INFO] [stderr]    Compiling http-range-header v0.4.2
[INFO] [stderr]    Compiling dtoa v1.0.10
[INFO] [stderr]    Compiling iri-string v0.7.9
[INFO] [stderr]    Compiling openssl-sys v0.9.111
[INFO] [stderr]    Compiling inotify v0.11.0
[INFO] [stderr]    Compiling dtoa-short v0.3.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling notify-types v2.0.0
[INFO] [stderr]    Compiling num-modular v0.6.1
[INFO] [stderr]    Compiling pulldown-cmark v0.10.3
[INFO] [stderr]    Compiling pest_meta v2.8.4
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling notify v8.2.0
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.95.0-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.111/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=057d0a87289ed13f -C extra-filename=-c020ec3b2c02d040 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-6d8df7a7e4899f97.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-f11d7500b2f2af56.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-696e2bfd925941b0.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e13b95c76195e8b266be9f3050beda02342030c76c1423a95ef9df2da1f8f936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e13b95c76195e8b266be9f3050beda02342030c76c1423a95ef9df2da1f8f936", kill_on_drop: false }`
[INFO] [stdout] e13b95c76195e8b266be9f3050beda02342030c76c1423a95ef9df2da1f8f936
