[INFO] cloning repository https://github.com/flexiblepower/s2-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flexiblepower/s2-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflexiblepower%2Fs2-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflexiblepower%2Fs2-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49ee9b9a04e500b2b8b2a9be17fadf314d763422
[INFO] testing flexiblepower/s2-rust against beta-2026-04-21 for beta-1.96-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflexiblepower%2Fs2-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/flexiblepower/s2-rust
[INFO] finished tweaking git repo https://github.com/flexiblepower/s2-rust
[INFO] tweaked toml for git repo https://github.com/flexiblepower/s2-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/flexiblepower/s2-rust 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/flexiblepower/s2-rust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4e74509661984e29b5a1488dfdb04d3cfd0ec9c17a591d105201b30d3e400417
[INFO] running `Command { std: "docker" "start" "-a" "4e74509661984e29b5a1488dfdb04d3cfd0ec9c17a591d105201b30d3e400417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e74509661984e29b5a1488dfdb04d3cfd0ec9c17a591d105201b30d3e400417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e74509661984e29b5a1488dfdb04d3cfd0ec9c17a591d105201b30d3e400417", kill_on_drop: false }`
[INFO] [stdout] 4e74509661984e29b5a1488dfdb04d3cfd0ec9c17a591d105201b30d3e400417
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8d16e612ec61762d1e8feb0649e397dac138582368e1c772bf57634b5f987cb3
[INFO] running `Command { std: "docker" "start" "-a" "8d16e612ec61762d1e8feb0649e397dac138582368e1c772bf57634b5f987cb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling fs_extra v1.3.0
[INFO] [stderr]    Compiling dunce v1.0.5
[INFO] [stderr]    Compiling zmij v1.0.15
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling aws-lc-rs v1.15.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling regex-syntax v0.8.9
[INFO] [stderr]    Compiling rustls v0.23.36
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling schemars v0.8.22
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling cc v1.2.53
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling regress v0.10.5
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]    Compiling rustls-native-certs v0.8.3
[INFO] [stderr]    Compiling matchit v0.8.4
[INFO] [stderr]    Compiling webpki-roots v0.26.11
[INFO] [stderr]    Compiling iana-time-zone v0.1.64
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling headers-core v0.3.0
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling headers v0.4.1
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling cmake v0.1.57
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling aws-lc-sys v0.37.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr] error: could not compile `regress` (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 regress --edition=2024 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/regress-0.10.5/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="backend-pikevm"' --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("backend-pikevm", "default", "index-positions", "pattern", "prohibit-unsafe", "std", "utf16"))' -C metadata=de6b01b0d6dd5f28 -C extra-filename=-4152d85963beadcb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-fa8703e903ad1d77.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-e157b78cb74da013.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" "8d16e612ec61762d1e8feb0649e397dac138582368e1c772bf57634b5f987cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d16e612ec61762d1e8feb0649e397dac138582368e1c772bf57634b5f987cb3", kill_on_drop: false }`
[INFO] [stdout] 8d16e612ec61762d1e8feb0649e397dac138582368e1c772bf57634b5f987cb3