[INFO] fetching crate mdbook-plantuml 1.0.0-rc.1...
[INFO] testing mdbook-plantuml-1.0.0-rc.1 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate mdbook-plantuml 1.0.0-rc.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate mdbook-plantuml 1.0.0-rc.1
[INFO] finished tweaking crates.io crate mdbook-plantuml 1.0.0-rc.1
[INFO] tweaked toml for crates.io crate mdbook-plantuml 1.0.0-rc.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-plantuml 1.0.0-rc.1 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-plantuml 1.0.0-rc.1 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded opener v0.8.2
[INFO] [stderr]   Downloaded simulacrum_mock v0.1.0
[INFO] [stderr]   Downloaded debugit v0.1.2
[INFO] [stderr]   Downloaded log4rs v1.2.0
[INFO] [stderr]   Downloaded deflate v1.0.0
[INFO] [stderr]   Downloaded mdbook v0.4.52
[INFO] [stderr]   Downloaded simulacrum_user v0.1.0
[INFO] [stderr]   Downloaded simulacrum v0.3.1
[INFO] [stderr]   Downloaded handlebox v0.3.0
[INFO] [stderr]   Downloaded simulacrum_shared v0.1.0
[INFO] [stderr]   Downloaded simulacrum_macros v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ae3d21962875c75fa6d4896e36f4bef594f9a9abdf787e5aac24c8ea165e26e
[INFO] running `Command { std: "docker" "start" "-a" "1ae3d21962875c75fa6d4896e36f4bef594f9a9abdf787e5aac24c8ea165e26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ae3d21962875c75fa6d4896e36f4bef594f9a9abdf787e5aac24c8ea165e26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ae3d21962875c75fa6d4896e36f4bef594f9a9abdf787e5aac24c8ea165e26e", kill_on_drop: false }`
[INFO] [stdout] 1ae3d21962875c75fa6d4896e36f4bef594f9a9abdf787e5aac24c8ea165e26e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b082cc4cfb315819f7b3b9b66b47a88d63d675c82966e2aaaa5d9c5b54fb9ca
[INFO] running `Command { std: "docker" "start" "-a" "6b082cc4cfb315819f7b3b9b66b47a88d63d675c82966e2aaaa5d9c5b54fb9ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling tokio v1.46.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-modular v0.6.1
[INFO] [stderr]    Compiling destructure_traitobject v0.2.0
[INFO] [stderr]    Compiling pulldown-cmark v0.10.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling chrono v0.4.41
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling webpki-roots v1.0.1
[INFO] [stderr]    Compiling unsafe-any-ors v1.0.0
[INFO] [stderr]    Compiling cc v1.2.29
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.10.1
[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling typemap-ors v1.0.0
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling thread-id v4.2.2
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling humantime v2.2.0
[INFO] [stderr]    Compiling num-order v1.2.0
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling deflate v1.0.0
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling dunce v1.0.5
[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/d98a5da813da67eb189387b8ccfb73cf481275d8/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.104/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=eb29080493495b94 -C extra-filename=-90167535f70cec5f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-f1712703fbf401f9.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-940ab2d4840f1cd6.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-59080bf303a6834d.rmeta --cap-lints allow --cap-lints=forbid -Copt-level=3` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6b082cc4cfb315819f7b3b9b66b47a88d63d675c82966e2aaaa5d9c5b54fb9ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b082cc4cfb315819f7b3b9b66b47a88d63d675c82966e2aaaa5d9c5b54fb9ca", kill_on_drop: false }`
[INFO] [stdout] 6b082cc4cfb315819f7b3b9b66b47a88d63d675c82966e2aaaa5d9c5b54fb9ca