[INFO] fetching crate terrars-backblaze-b2 0.1.10...
[INFO] testing terrars-backblaze-b2-0.1.10 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate terrars-backblaze-b2 0.1.10 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate terrars-backblaze-b2 0.1.10
[INFO] finished tweaking crates.io crate terrars-backblaze-b2 0.1.10
[INFO] tweaked toml for crates.io crate terrars-backblaze-b2 0.1.10 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate terrars-backblaze-b2 0.1.10 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 138 packages to latest compatible versions
[INFO] [stderr]       Adding markdown v1.0.0-alpha.21 (available: v1.0.0)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 45f440a6382a45a47a443c30e444fa6d3ef4ca76dd5b57cae2be2a03f6ae7ac2
[INFO] running `Command { std: "docker" "start" "-a" "45f440a6382a45a47a443c30e444fa6d3ef4ca76dd5b57cae2be2a03f6ae7ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45f440a6382a45a47a443c30e444fa6d3ef4ca76dd5b57cae2be2a03f6ae7ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f440a6382a45a47a443c30e444fa6d3ef4ca76dd5b57cae2be2a03f6ae7ac2", kill_on_drop: false }`
[INFO] [stdout] 45f440a6382a45a47a443c30e444fa6d3ef4ca76dd5b57cae2be2a03f6ae7ac2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 05fde07ffd56886f30d81a53a063202be8c9f6e1838df1bff2933575b284e4cf
[INFO] running `Command { std: "docker" "start" "-a" "05fde07ffd56886f30d81a53a063202be8c9f6e1838df1bff2933575b284e4cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling smawk v0.3.2
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling unicode-id v0.3.6
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling console v0.15.11
[INFO] [stderr]    Compiling markdown v1.0.0-alpha.21
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling terminal_size v0.4.4
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling vte v0.14.1
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling textwrap v0.16.2
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling console v0.16.3
[INFO] [stderr]    Compiling erased-serde v0.4.10
[INFO] [stderr]    Compiling loga v0.5.4
[INFO] [stderr]    Compiling fastrand v2.4.1
[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-2.0.117/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"' --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=32e73eb412a411f6 -C extra-filename=-8670b156fcf1d4aa --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fa35c6b39e130a04.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a90556b5daec7f38.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-499e208ff65c691c.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" "05fde07ffd56886f30d81a53a063202be8c9f6e1838df1bff2933575b284e4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05fde07ffd56886f30d81a53a063202be8c9f6e1838df1bff2933575b284e4cf", kill_on_drop: false }`
[INFO] [stdout] 05fde07ffd56886f30d81a53a063202be8c9f6e1838df1bff2933575b284e4cf
