[INFO] fetching crate rmqtt-bridge-ingress-mqtt 0.19.1...
[INFO] testing rmqtt-bridge-ingress-mqtt-0.19.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rmqtt-bridge-ingress-mqtt 0.19.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rmqtt-bridge-ingress-mqtt 0.19.1
[INFO] finished tweaking crates.io crate rmqtt-bridge-ingress-mqtt 0.19.1
[INFO] tweaked toml for crates.io crate rmqtt-bridge-ingress-mqtt 0.19.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rmqtt-bridge-ingress-mqtt 0.19.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rmqtt-bridge-ingress-mqtt 0.19.1 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e2e034522c2a64cbe733edfc510e7dab9cdf7c5d3ab9532ccff7908ce9baa05
[INFO] running `Command { std: "docker" "start" "-a" "8e2e034522c2a64cbe733edfc510e7dab9cdf7c5d3ab9532ccff7908ce9baa05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e2e034522c2a64cbe733edfc510e7dab9cdf7c5d3ab9532ccff7908ce9baa05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e2e034522c2a64cbe733edfc510e7dab9cdf7c5d3ab9532ccff7908ce9baa05", kill_on_drop: false }`
[INFO] [stdout] 8e2e034522c2a64cbe733edfc510e7dab9cdf7c5d3ab9532ccff7908ce9baa05
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c5ed245068e2175da266b49f3a8a5ccc10cdc3268c5752dbd15fa7614f80e20
[INFO] running `Command { std: "docker" "start" "-a" "6c5ed245068e2175da266b49f3a8a5ccc10cdc3268c5752dbd15fa7614f80e20", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling libc v0.2.179
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zerocopy v0.8.32
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling find-msvc-tools v0.1.6
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustls-pki-types v1.13.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling aws-lc-rs v1.15.2
[INFO] [stderr]    Compiling ntex-rt v0.4.33
[INFO] [stderr]    Compiling oneshot v0.1.11
[INFO] [stderr]    Compiling ntex-service v3.8.0
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling rustls v0.23.36
[INFO] [stderr]    Compiling zmij v1.0.12
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling chrono v0.4.42
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling openssl-probe v0.2.0
[INFO] [stderr]    Compiling doc-comment v0.3.4
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling quinn-udp v0.5.14
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling rustls-native-certs v0.8.3
[INFO] [stderr]    Compiling interpolator v0.5.0
[INFO] [stderr]    Compiling collection_literals v1.0.3
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling dequemap v0.2.2
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling quinn v0.11.9
[INFO] [stderr]    Compiling portable-atomic v1.13.0
[INFO] [stderr]    Compiling std-ext v0.3.2
[INFO] [stderr]    Compiling lru-slab v0.1.2
[INFO] [stderr]    Compiling protobuf v2.28.0
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling proc-macro-utils v0.8.0
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling nonzero_ext v0.3.0
[INFO] [stderr]    Compiling deranged v0.5.5
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling futures-lite v1.13.0
[INFO] [stderr]    Compiling raw-cpuid v11.6.0
[INFO] [stderr]    Compiling prometheus v0.13.4
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cc v1.2.51
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling cmake v0.1.57
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[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-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.114/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=41b9be53c78f6dff -C extra-filename=-e792ddb9d358e54e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-25a2b552e5733064.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0dde3af249cdfb2a.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-78d3da9d81f84e3e.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" "6c5ed245068e2175da266b49f3a8a5ccc10cdc3268c5752dbd15fa7614f80e20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5ed245068e2175da266b49f3a8a5ccc10cdc3268c5752dbd15fa7614f80e20", kill_on_drop: false }`
[INFO] [stdout] 6c5ed245068e2175da266b49f3a8a5ccc10cdc3268c5752dbd15fa7614f80e20
