[INFO] fetching crate rustpython 0.5.0...
[INFO] testing rustpython-0.5.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rustpython 0.5.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rustpython 0.5.0
[INFO] finished tweaking crates.io crate rustpython 0.5.0
[INFO] tweaked toml for crates.io crate rustpython 0.5.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustpython 0.5.0 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 rustpython 0.5.0 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6dd5d635a5cc4ef2bf0ea18de5020f2edd8cc4811c4d0b2b5b12711d87a4c601
[INFO] running `Command { std: "docker" "start" "-a" "6dd5d635a5cc4ef2bf0ea18de5020f2edd8cc4811c4d0b2b5b12711d87a4c601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dd5d635a5cc4ef2bf0ea18de5020f2edd8cc4811c4d0b2b5b12711d87a4c601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd5d635a5cc4ef2bf0ea18de5020f2edd8cc4811c4d0b2b5b12711d87a4c601", kill_on_drop: false }`
[INFO] [stdout] 6dd5d635a5cc4ef2bf0ea18de5020f2edd8cc4811c4d0b2b5b12711d87a4c601
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9ad1a7d369e458e12d04702b192bce3eff0960217c76e17ae5662ada693d945a
[INFO] running `Command { std: "docker" "start" "-a" "9ad1a7d369e458e12d04702b192bce3eff0960217c76e17ae5662ada693d945a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling siphasher v1.0.2
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling ryu v1.0.22
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling zerocopy v0.8.34
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling itoa v1.0.17
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling collection_literals v1.0.3
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling find-msvc-tools v0.1.8
[INFO] [stderr]    Compiling interpolator v0.5.0
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]    Compiling safe_arch v1.0.0
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling malachite-nz v0.9.1
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling wide v1.1.1
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling proc-macro-utils v0.10.0
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling cc v1.2.54
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling ordermap v1.1.0
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling castaway v0.2.4
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling compact_str v0.9.0
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling ascii v1.1.0
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling unicode-width v0.2.2
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling ref-cast v1.0.25
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling radium v1.1.1
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling getopts v0.2.24
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling manyhow-macros v0.11.4
[INFO] [stderr]    Compiling lexical-util v1.0.7
[INFO] [stderr]    Compiling cmake v0.1.57
[INFO] [stderr]    Compiling twox-hash v2.1.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling lexical-parse-integer v1.0.6
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling unic-ucd-category v0.9.0
[INFO] [stderr]    Compiling lz4_flex v0.13.0
[INFO] [stderr]    Compiling malachite-base v0.9.1
[INFO] [stderr]    Compiling lexical-parse-float v1.0.6
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling bstr v1.12.1
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling hexf-parse v0.2.1
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling block-padding v0.3.3
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling phf_codegen v0.11.3
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling phf_shared v0.13.1
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling unicode_names2_generator v2.0.0
[INFO] [stderr]    Compiling unicode_names2_generator v1.3.0
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling phf_generator v0.13.1
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.25
[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 opt-level=3 -C embed-bitcode=no -C debug-assertions=on --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=7ed46706d86ba6c7 -C extra-filename=-b0baa9eafa8dfad3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-eebcda946b237479.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-fb274d075d0a0ab4.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-7b6c339a0f778d38.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" "9ad1a7d369e458e12d04702b192bce3eff0960217c76e17ae5662ada693d945a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ad1a7d369e458e12d04702b192bce3eff0960217c76e17ae5662ada693d945a", kill_on_drop: false }`
[INFO] [stdout] 9ad1a7d369e458e12d04702b192bce3eff0960217c76e17ae5662ada693d945a
