[INFO] fetching crate mdbook-exercises 0.1.5...
[INFO] testing mdbook-exercises-0.1.5 against try#8da20828b6ea601dfd8e2448cb50ace88876bd78 for pr-150933
[INFO] extracting crate mdbook-exercises 0.1.5 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mdbook-exercises 0.1.5
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mdbook-exercises 0.1.5
[INFO] tweaked toml for crates.io crate mdbook-exercises 0.1.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-exercises 0.1.5 on toolchain 8da20828b6ea601dfd8e2448cb50ace88876bd78
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-exercises 0.1.5 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" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e69b6d0608d9a04887b7f28d0019a2bd628fa035aaa892679ee28830875354e3
[INFO] running `Command { std: "docker" "start" "-a" "e69b6d0608d9a04887b7f28d0019a2bd628fa035aaa892679ee28830875354e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e69b6d0608d9a04887b7f28d0019a2bd628fa035aaa892679ee28830875354e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e69b6d0608d9a04887b7f28d0019a2bd628fa035aaa892679ee28830875354e3", kill_on_drop: false }`
[INFO] [stdout] e69b6d0608d9a04887b7f28d0019a2bd628fa035aaa892679ee28830875354e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+8da20828b6ea601dfd8e2448cb50ace88876bd78" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86a9cf450a05ac783ec6b07f3d590509d366aa275d6833b8f71c7a100b771c26
[INFO] running `Command { std: "docker" "start" "-a" "86a9cf450a05ac783ec6b07f3d590509d366aa275d6833b8f71c7a100b771c26", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v1.0.16
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling bytes v1.11.0
[INFO] [stderr]    Compiling zerocopy v0.8.31
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling serde_json v1.0.147
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling pest v2.8.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling zmij v0.1.10
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling dtoa v1.0.10
[INFO] [stderr]    Compiling ryu v1.0.21
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling data-encoding v2.9.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling dtoa-short v0.3.5
[INFO] [stderr]    Compiling inotify v0.11.0
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling num-modular v0.6.1
[INFO] [stderr]    Compiling pulldown-cmark v0.10.3
[INFO] [stderr]    Compiling serde_path_to_error v0.1.20
[INFO] [stderr]    Compiling http-range-header v0.4.2
[INFO] [stderr]    Compiling iana-time-zone v0.1.64
[INFO] [stderr]    Compiling matchit v0.8.4
[INFO] [stderr]    Compiling pest_meta v2.8.4
[INFO] [stderr]    Compiling notify v8.2.0
[INFO] [stderr]    Compiling pulldown-cmark-escape v0.10.1
[INFO] [stderr]    Compiling web_atoms v0.1.3
[INFO] [stderr]    Compiling jiff v0.2.17
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling indexmap v2.12.1
[INFO] [stderr]    Compiling num-order v1.2.0
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling topological-sort v0.2.2
[INFO] [stderr]    Compiling axum-core v0.5.5
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling terminal_size v0.4.3
[INFO] [stderr]    Compiling tempfile v3.24.0
[INFO] [stderr]    Compiling bstr v1.12.1
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling clap_builder v4.5.53
[INFO] [stderr]    Compiling notify-debouncer-mini v0.6.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling env_filter v0.1.4
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling pest_generator v2.8.4
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling globset v0.4.18
[INFO] [stderr]    Compiling opener v0.8.3
[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/8da20828b6ea601dfd8e2448cb50ace88876bd78/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=8ef2d010c0ba03f7 -C extra-filename=-0cebe3886d28ec1e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-43e32a25692bf44a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-01cdf4ac6a2aaf5b.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-9533002ac35f5809.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "86a9cf450a05ac783ec6b07f3d590509d366aa275d6833b8f71c7a100b771c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86a9cf450a05ac783ec6b07f3d590509d366aa275d6833b8f71c7a100b771c26", kill_on_drop: false }`
[INFO] [stdout] 86a9cf450a05ac783ec6b07f3d590509d366aa275d6833b8f71c7a100b771c26