[INFO] cloning repository https://github.com/xd009642/mdbook-chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xd009642/mdbook-chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxd009642%2Fmdbook-chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxd009642%2Fmdbook-chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48ddf12324d5c5feaa7ff1378bf10626d21def68
[INFO] documenting xd009642/mdbook-chess against beta-2025-04-13 for beta-1.87-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxd009642%2Fmdbook-chess" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xd009642/mdbook-chess on toolchain beta-2025-04-13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xd009642/mdbook-chess
[INFO] finished tweaking git repo https://github.com/xd009642/mdbook-chess
[INFO] tweaked toml for git repo https://github.com/xd009642/mdbook-chess written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xd009642/mdbook-chess 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" "+beta-2025-04-13" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b60aee748c2ee3c7caea016005522a3dd2702d07286f2a0d60c2529a5645b7df
[INFO] running `Command { std: "docker" "start" "-a" "b60aee748c2ee3c7caea016005522a3dd2702d07286f2a0d60c2529a5645b7df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b60aee748c2ee3c7caea016005522a3dd2702d07286f2a0d60c2529a5645b7df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b60aee748c2ee3c7caea016005522a3dd2702d07286f2a0d60c2529a5645b7df", kill_on_drop: false }`
[INFO] [stdout] b60aee748c2ee3c7caea016005522a3dd2702d07286f2a0d60c2529a5645b7df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20af2b04c59f7064cc8df95b42da454c55bc18a820cbca4b8bea1b30827987ad
[INFO] running `Command { std: "docker" "start" "-a" "20af2b04c59f7064cc8df95b42da454c55bc18a820cbca4b8bea1b30827987ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.31
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.10
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling syn v2.0.26
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]    Compiling tokio v1.29.1
[INFO] [stderr]    Compiling rustix v0.38.4
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking linux-raw-sys v0.4.3
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking bitflags v2.3.3
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling gimli v0.27.3
[INFO] [stderr]    Compiling serde_json v1.0.103
[INFO] [stderr]     Checking sha1 v0.10.5
[INFO] [stderr]    Compiling object v0.31.1
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking anstyle-parse v0.2.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling backtrace v0.3.68
[INFO] [stderr]     Checking url v2.4.0
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking anstyle v1.0.1
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking hashbrown v0.14.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking walkdir v2.3.3
[INFO] [stderr]     Checking tendril v0.4.3
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking regex-automata v0.3.3
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling pulldown-cmark v0.9.3
[INFO] [stderr]     Checking clap_lex v0.5.0
[INFO] [stderr]     Checking indexmap v2.0.0
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]     Checking try-lock v0.2.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking inotify v0.9.6
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking filetime v0.2.21
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]    Compiling markup5ever v0.11.0
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]     Checking winnow v0.5.0
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]     Checking base64 v0.21.2
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking notify v6.0.1
[INFO] [stderr]     Checking headers v0.3.8
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking os_str_bytes v6.5.1
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling addr2line v0.20.0
[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/beta-2025-04-13-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.109/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="quote"' --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", "quote", "test", "visit", "visit-mut"))' -C metadata=a184e76efe63d8b0 -C extra-filename=-6878437ad731275e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-a76bc3967f104a04.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-f73059c501a60190.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-88a20ab10d75ac1b.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "20af2b04c59f7064cc8df95b42da454c55bc18a820cbca4b8bea1b30827987ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20af2b04c59f7064cc8df95b42da454c55bc18a820cbca4b8bea1b30827987ad", kill_on_drop: false }`
[INFO] [stdout] 20af2b04c59f7064cc8df95b42da454c55bc18a820cbca4b8bea1b30827987ad