[INFO] cloning repository https://github.com/prateek/w
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prateek/w" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprateek%2Fw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprateek%2Fw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa86e2b7bf47f56779b46684a422434845691275
[INFO] testing prateek/w against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprateek%2Fw" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/prateek/w
[INFO] finished tweaking git repo https://github.com/prateek/w
[INFO] tweaked toml for git repo https://github.com/prateek/w written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/prateek/w 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 git repo https://github.com/prateek/w 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] 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] f9c691f995d969a8d8b0776872cc4ca800cffd9efb78fff6039e7a0b0ec99c41
[INFO] running `Command { std: "docker" "start" "-a" "f9c691f995d969a8d8b0776872cc4ca800cffd9efb78fff6039e7a0b0ec99c41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9c691f995d969a8d8b0776872cc4ca800cffd9efb78fff6039e7a0b0ec99c41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c691f995d969a8d8b0776872cc4ca800cffd9efb78fff6039e7a0b0ec99c41", kill_on_drop: false }`
[INFO] [stdout] f9c691f995d969a8d8b0776872cc4ca800cffd9efb78fff6039e7a0b0ec99c41
[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] 467dc5f30da34a254247ac0cb7a6ae99b13289a0f1918f3aafc5cba85fdb5709
[INFO] running `Command { std: "docker" "start" "-a" "467dc5f30da34a254247ac0cb7a6ae99b13289a0f1918f3aafc5cba85fdb5709", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.23
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling regex-syntax v0.8.9
[INFO] [stderr]    Compiling rustix v1.1.3
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling deranged v0.5.6
[INFO] [stderr]    Compiling num-conv v0.2.0
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling time-core v0.1.8
[INFO] [stderr]    Compiling anyhow v1.0.101
[INFO] [stderr]    Compiling vergen-lib v9.1.0
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling pulldown-cmark v0.13.0
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling winnow v0.7.14
[INFO] [stderr]    Compiling vergen v9.1.0
[INFO] [stderr]    Compiling unicase v2.9.0
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling syn v2.0.115
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling vte v0.14.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling vergen-gitcl v9.1.0
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling signal-hook-mio v0.2.5
[INFO] [stderr]    Compiling time v0.3.47
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling clap_lex v1.0.0
[INFO] [stderr]    Compiling terminal_size v0.4.3
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling askama_parser v0.15.4
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling toml_parser v1.0.8+spec-1.1.0
[INFO] [stderr]    Compiling clap_builder v4.5.58
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling toml_writer v1.0.6+spec-1.1.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.65
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling env_home v0.1.0
[INFO] [stderr]    Compiling strict v0.2.0
[INFO] [stderr]    Compiling chrono v0.4.43
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling serde_spanned v1.0.4
[INFO] [stderr]    Compiling toml_datetime v0.7.5+spec-1.1.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling strip-ansi-escapes v0.2.1
[INFO] [stderr]    Compiling nix v0.31.1
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling is_executable v1.0.5
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling east-asian-width v0.1.0
[INFO] [stderr]    Compiling skim-common v0.2.0
[INFO] [stderr]    Compiling jiff v0.2.20
[INFO] [stderr]    Compiling signal-hook v0.4.3
[INFO] [stderr]    Compiling skim-tuikit v0.6.6
[INFO] [stderr]    Compiling toml v0.9.12+spec-1.1.0
[INFO] [stderr]    Compiling fuzzy-matcher v0.3.7
[INFO] [stderr]    Compiling regex v1.12.3
[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/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-2.0.115/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=1afad62ac9d03e02 -C extra-filename=-d08a46879f1babbd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-2306e84c82f3aaa6.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-027aa035d3b7b87f.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-114df360ce5d389d.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" "467dc5f30da34a254247ac0cb7a6ae99b13289a0f1918f3aafc5cba85fdb5709", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "467dc5f30da34a254247ac0cb7a6ae99b13289a0f1918f3aafc5cba85fdb5709", kill_on_drop: false }`
[INFO] [stdout] 467dc5f30da34a254247ac0cb7a6ae99b13289a0f1918f3aafc5cba85fdb5709
