[INFO] cloning repository https://github.com/Nathan-lama/natural-selection
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nathan-lama/natural-selection" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathan-lama%2Fnatural-selection", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathan-lama%2Fnatural-selection'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fad50edb4d5089d3cddaa6569cc8d2079ecc547c
[INFO] documenting Nathan-lama/natural-selection against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNathan-lama%2Fnatural-selection" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/Nathan-lama/natural-selection
[INFO] finished tweaking git repo https://github.com/Nathan-lama/natural-selection
[INFO] tweaked toml for git repo https://github.com/Nathan-lama/natural-selection written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Nathan-lama/natural-selection 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/Nathan-lama/natural-selection 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 77cff7ab5742fec3f56adc0369ff8acef72f9b118a4694da38937490b92615f2
[INFO] running `Command { std: "docker" "start" "-a" "77cff7ab5742fec3f56adc0369ff8acef72f9b118a4694da38937490b92615f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77cff7ab5742fec3f56adc0369ff8acef72f9b118a4694da38937490b92615f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77cff7ab5742fec3f56adc0369ff8acef72f9b118a4694da38937490b92615f2", kill_on_drop: false }`
[INFO] [stdout] 77cff7ab5742fec3f56adc0369ff8acef72f9b118a4694da38937490b92615f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15b4ff50fa8107a185fe18bf2c2cce64209578678a7175be46e4dcdb09273865
[INFO] running `Command { std: "docker" "start" "-a" "15b4ff50fa8107a185fe18bf2c2cce64209578678a7175be46e4dcdb09273865", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
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[INFO] [stderr]    Compiling libc v0.2.147
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[INFO] [stderr]     Checking raw-window-handle v0.5.2
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[INFO] [stderr]     Checking simd-adler32 v0.3.7
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[INFO] [stderr]    Compiling toml_edit v0.19.14
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[INFO] [stderr]     Checking gpu-descriptor v0.2.3
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]     Checking profiling v1.0.8
[INFO] [stderr]    Compiling thiserror-core v1.0.38
[INFO] [stderr]     Checking renderdoc-sys v1.0.0
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[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking data-encoding v2.4.0
[INFO] [stderr]     Checking const_panic v0.2.8
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking ktx2 v0.3.0
[INFO] [stderr]     Checking constgebra v0.1.3
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking ttf-parser v0.19.1
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking radsort v0.1.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.8
[INFO] [stderr]    Compiling xml-rs v0.8.16
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]     Checking svg_fmt v0.4.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling serde_json v1.0.103
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]    Compiling inflections v1.1.1
[INFO] [stderr]     Checking rectangle-pack v0.4.2
[INFO] [stderr]     Checking accesskit v0.11.0
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking guillotiere v0.6.2
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking ogg v0.8.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]    Compiling gilrs v0.10.2
[INFO] [stderr]     Checking gilrs-core v0.5.6
[INFO] [stderr]     Checking ron v0.8.0
[INFO] [stderr]     Checking grid v0.9.0
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[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-2.0.27/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=d21a611308b0259d -C extra-filename=-1d841c685daee84d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d90fdcc4e92d640d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ddd0f280e7ff3cb2.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-b131b65dee42aa4b.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ash` (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 ash --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ash-0.37.3+1.3.251/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C opt-level=3 -C embed-bitcode=no -C debuginfo=2 -C debug-assertions=on --cfg 'feature="debug"' --cfg 'feature="default"' --cfg 'feature="libloading"' --cfg 'feature="loaded"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("debug", "default", "libloading", "linked", "loaded"))' -C metadata=7a55309b7286972c -C extra-filename=-55ce878ac026a9fd --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libloading=/opt/rustwide/target/debug/deps/liblibloading-01e6539a2cb5d08e.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "15b4ff50fa8107a185fe18bf2c2cce64209578678a7175be46e4dcdb09273865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15b4ff50fa8107a185fe18bf2c2cce64209578678a7175be46e4dcdb09273865", kill_on_drop: false }`
[INFO] [stdout] 15b4ff50fa8107a185fe18bf2c2cce64209578678a7175be46e4dcdb09273865