[INFO] fetching crate qrcode_scanner 0.3.2...
[INFO] testing qrcode_scanner-0.3.2 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate qrcode_scanner 0.3.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate qrcode_scanner 0.3.2
[INFO] finished tweaking crates.io crate qrcode_scanner 0.3.2
[INFO] tweaked toml for crates.io crate qrcode_scanner 0.3.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qrcode_scanner 0.3.2 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate qrcode_scanner 0.3.2 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a211a7fabfa5237422d63edb5605874454c15632052c5e07654bb91ad929d74
[INFO] running `Command { std: "docker" "start" "-a" "7a211a7fabfa5237422d63edb5605874454c15632052c5e07654bb91ad929d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a211a7fabfa5237422d63edb5605874454c15632052c5e07654bb91ad929d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a211a7fabfa5237422d63edb5605874454c15632052c5e07654bb91ad929d74", kill_on_drop: false }`
[INFO] [stdout] 7a211a7fabfa5237422d63edb5605874454c15632052c5e07654bb91ad929d74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59e103c3009ca186672c5fdfef1a23878ce128ab430fcb544c850814dae22930
[INFO] running `Command { std: "docker" "start" "-a" "59e103c3009ca186672c5fdfef1a23878ce128ab430fcb544c850814dae22930", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling prettyplease v0.2.31
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling bytemuck v1.22.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy v0.8.23
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling miniz_oxide v0.8.5
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling aligned-vec v0.5.0
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling built v0.7.7
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling bindgen v0.65.1
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling flate2 v1.1.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling safe_arch v0.7.4
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling v_frame v0.3.8
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling bitstream-io v2.6.0
[INFO] [stderr]    Compiling once_cell v1.21.1
[INFO] [stderr]    Compiling noop_proc_macro v0.3.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling quick-error v2.0.1
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling weezl v0.1.8
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling imgref v1.11.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling wide v0.7.32
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling loop9 v0.1.5
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling avif-serialize v0.8.3
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling which v4.4.2
[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-2025-09-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.100/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --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=6d030e692a2518bc -C extra-filename=-67d40ea34897765a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-476290cbe1d6f95e.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b7bdb8b4a7e2aef2.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-958b805d9ab3f4fe.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" "59e103c3009ca186672c5fdfef1a23878ce128ab430fcb544c850814dae22930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59e103c3009ca186672c5fdfef1a23878ce128ab430fcb544c850814dae22930", kill_on_drop: false }`
[INFO] [stdout] 59e103c3009ca186672c5fdfef1a23878ce128ab430fcb544c850814dae22930