[INFO] fetching crate mdbook-quiz 0.4.0...
[INFO] testing mdbook-quiz-0.4.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mdbook-quiz 0.4.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mdbook-quiz 0.4.0
[INFO] finished tweaking crates.io crate mdbook-quiz 0.4.0
[INFO] tweaked toml for crates.io crate mdbook-quiz 0.4.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-quiz 0.4.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-quiz 0.4.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded visibility v0.0.1
[INFO] [stderr]   Downloaded smawk v0.3.2
[INFO] [stderr]   Downloaded toml-spanned-value v0.1.0
[INFO] [stderr]   Downloaded pulldown-cmark-escape v0.10.1
[INFO] [stderr]   Downloaded headers-core v0.2.0
[INFO] [stderr]   Downloaded sys-locale v0.2.4
[INFO] [stderr]   Downloaded aquascope_workspace_utils v0.3.6
[INFO] [stderr]   Downloaded is_ci v1.2.0
[INFO] [stderr]   Downloaded ts-rs v6.2.1
[INFO] [stderr]   Downloaded bytecount v0.6.8
[INFO] [stderr]   Downloaded nom_locate v4.2.0
[INFO] [stderr]   Downloaded cssparser v0.35.0
[INFO] [stderr]   Downloaded clap v4.3.24
[INFO] [stderr]   Downloaded cc v1.2.24
[INFO] [stderr]   Downloaded headers v0.3.9
[INFO] [stderr]   Downloaded elasticlunr-rs v3.0.2
[INFO] [stderr]   Downloaded clap_builder v4.3.24
[INFO] [stderr]   Downloaded pulldown-cmark v0.10.3
[INFO] [stderr]   Downloaded zspell v0.3.3
[INFO] [stderr]   Downloaded warp v0.3.7
[INFO] [stderr]   Downloaded markdown v1.0.0
[INFO] [stderr]   Downloaded mdbook-quiz-validate v0.4.0
[INFO] [stderr]   Downloaded tungstenite v0.21.0
[INFO] [stderr]   Downloaded miette-derive v5.10.0
[INFO] [stderr]   Downloaded html5ever v0.31.0
[INFO] [stderr]   Downloaded ammonia v4.1.0
[INFO] [stderr]   Downloaded notify v8.0.0
[INFO] [stderr]   Downloaded tokio-tungstenite v0.21.0
[INFO] [stderr]   Downloaded miette v5.10.0
[INFO] [stderr]   Downloaded web_atoms v0.1.2
[INFO] [stderr]   Downloaded markup5ever v0.16.1
[INFO] [stderr]   Downloaded clap_complete v4.5.3
[INFO] [stderr]   Downloaded opener v0.7.2
[INFO] [stderr]   Downloaded unicode-id v0.3.5
[INFO] [stderr]   Downloaded backtrace-ext v0.2.1
[INFO] [stderr]   Downloaded supports-color v2.1.0
[INFO] [stderr]   Downloaded supports-unicode v2.1.0
[INFO] [stderr]   Downloaded toml_edit v0.20.7
[INFO] [stderr]   Downloaded ts-rs-macros v6.2.0
[INFO] [stderr]   Downloaded anstyle-wincon v3.0.8
[INFO] [stderr]   Downloaded notify-debouncer-mini v0.6.0
[INFO] [stderr]   Downloaded mdbook-preprocessor-utils v0.2.0
[INFO] [stderr]   Downloaded fluid-let v1.0.0
[INFO] [stderr]   Downloaded mdbook-quiz-schema v0.4.0
[INFO] [stderr]   Downloaded terminal_size v0.2.6
[INFO] [stderr]   Downloaded inotify v0.11.0
[INFO] [stderr]   Downloaded normpath v1.3.0
[INFO] [stderr]   Downloaded notify-types v2.0.0
[INFO] [stderr]   Downloaded supports-hyperlinks v2.1.0
[INFO] [stderr]   Downloaded stringmetrics v2.2.2
[INFO] [stderr]   Downloaded mdbook v0.4.45
[INFO] [stderr]   Downloaded mdbook-aquascope v0.3.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a09ec2e25e43175e3b489fd395629e8df2bc1bb094cf77da24c23cb36d19d05
[INFO] running `Command { std: "docker" "start" "-a" "0a09ec2e25e43175e3b489fd395629e8df2bc1bb094cf77da24c23cb36d19d05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a09ec2e25e43175e3b489fd395629e8df2bc1bb094cf77da24c23cb36d19d05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a09ec2e25e43175e3b489fd395629e8df2bc1bb094cf77da24c23cb36d19d05", kill_on_drop: false }`
[INFO] [stdout] 0a09ec2e25e43175e3b489fd395629e8df2bc1bb094cf77da24c23cb36d19d05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ca29ecbfbb0e5782ef735b970c7b95e455419f71f08697a25d6fe4f5664a282
[INFO] running `Command { std: "docker" "start" "-a" "4ca29ecbfbb0e5782ef735b970c7b95e455419f71f08697a25d6fe4f5664a282", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling rustix v0.37.28
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling miniz_oxide v0.8.8
[INFO] [stderr]    Compiling linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.24
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling http v1.3.1
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling data-encoding v2.9.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling web_atoms v0.1.2
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling smawk v0.3.2
[INFO] [stderr]    Compiling num-modular v0.6.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling notify-types v2.0.0
[INFO] [stderr]    Compiling pulldown-cmark v0.10.3
[INFO] [stderr]    Compiling headers v0.3.9
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling num-order v1.2.0
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling anstream v0.3.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling tempfile v3.20.0
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling inotify v0.11.0
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling jiff v0.2.14
[INFO] [stderr]    Compiling is_ci v1.2.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling zspell v0.3.3
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.10.1
[INFO] [stderr]    Compiling supports-color v2.1.0
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling textwrap v0.15.2
[INFO] [stderr]    Compiling notify v8.0.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling hashbrown v0.13.2
[INFO] [stderr]    Compiling supports-hyperlinks v2.1.0
[INFO] [stderr]    Compiling supports-unicode v2.1.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]    Compiling unicode-id v0.3.5
[INFO] [stderr]    Compiling addr2line v0.24.2
[INFO] [stderr]    Compiling notify-debouncer-mini v0.6.0
[INFO] [stderr]    Compiling terminal_size v0.2.6
[INFO] [stderr]    Compiling clap_builder v4.3.24
[INFO] [stderr]    Compiling humantime v2.2.0
[INFO] [stderr]    Compiling stringmetrics v2.2.2
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling sys-locale v0.2.4
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling markdown v1.0.0
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling winnow v0.5.40
[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/1.90.0-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.101/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"' --cfg 'feature="visit-mut"' --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=e6df4f6f4667cc26 -C extra-filename=-138d257be02e82d5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-adfd6dadd64ae64b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-3c95f32c1e57a52d.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-442589a0fd17beea.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" "4ca29ecbfbb0e5782ef735b970c7b95e455419f71f08697a25d6fe4f5664a282", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca29ecbfbb0e5782ef735b970c7b95e455419f71f08697a25d6fe4f5664a282", kill_on_drop: false }`
[INFO] [stdout] 4ca29ecbfbb0e5782ef735b970c7b95e455419f71f08697a25d6fe4f5664a282