[INFO] fetching crate vtcode-core 0.39.3...
[INFO] testing vtcode-core-0.39.3 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate vtcode-core 0.39.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate vtcode-core 0.39.3
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate vtcode-core 0.39.3
[INFO] tweaked toml for crates.io crate vtcode-core 0.39.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vtcode-core 0.39.3 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vtcode-core 0.39.3 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-2025-10-28" "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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a11368709b3ec301f15d968bebc4edaf47034d0e1227a7665d647724f99a5e8
[INFO] running `Command { std: "docker" "start" "-a" "8a11368709b3ec301f15d968bebc4edaf47034d0e1227a7665d647724f99a5e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a11368709b3ec301f15d968bebc4edaf47034d0e1227a7665d647724f99a5e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a11368709b3ec301f15d968bebc4edaf47034d0e1227a7665d647724f99a5e8", kill_on_drop: false }`
[INFO] [stdout] 8a11368709b3ec301f15d968bebc4edaf47034d0e1227a7665d647724f99a5e8
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4588260b671205ff0a0776b41a35e1f7ae86200f99fdbf01309a53342127e2f6
[INFO] running `Command { std: "docker" "start" "-a" "4588260b671205ff0a0776b41a35e1f7ae86200f99fdbf01309a53342127e2f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling find-msvc-tools v0.1.2
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling foldhash v0.2.0
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling http v1.3.1
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling cc v1.2.39
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling rustls v0.23.32
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling toml_parser v1.0.4
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling schemars v0.8.22
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling tree-sitter-language v0.1.5
[INFO] [stderr]    Compiling webpki-roots v1.0.2
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling instability v0.3.9
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling regress v0.10.5
[INFO] [stderr]    Compiling castaway v0.2.4
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]    Compiling built v0.7.7
[INFO] [stderr]    Compiling toml_writer v1.0.4
[INFO] [stderr]    Compiling iri-string v0.7.8
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr] error: could not compile `serde_core` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2025-10-28-x86_64-unknown-linux-gnu/bin/rustc --crate-name serde_core --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_core-1.0.228/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 -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="rc"' --cfg 'feature="result"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "default", "rc", "result", "std", "unstable"))' -C metadata=46eea9905cacc597 -C extra-filename=-931cdb2dbb013176 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn --check-cfg 'cfg(if_docsrs_then_no_serde_core)' --check-cfg 'cfg(no_core_cstr)' --check-cfg 'cfg(no_core_error)' --check-cfg 'cfg(no_core_net)' --check-cfg 'cfg(no_core_num_saturating)' --check-cfg 'cfg(no_diagnostic_namespace)' --check-cfg 'cfg(no_serde_derive)' --check-cfg 'cfg(no_std_atomic)' --check-cfg 'cfg(no_std_atomic64)' --check-cfg 'cfg(no_target_has_atomic)'` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4588260b671205ff0a0776b41a35e1f7ae86200f99fdbf01309a53342127e2f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4588260b671205ff0a0776b41a35e1f7ae86200f99fdbf01309a53342127e2f6", kill_on_drop: false }`
[INFO] [stdout] 4588260b671205ff0a0776b41a35e1f7ae86200f99fdbf01309a53342127e2f6