[INFO] cloning repository https://github.com/open-spaced-repetition/fsrs-optimizer-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/open-spaced-repetition/fsrs-optimizer-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-spaced-repetition%2Ffsrs-optimizer-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-spaced-repetition%2Ffsrs-optimizer-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d22b53b34b7e8dcbc54c33878a082d636f8cae53
[INFO] testing open-spaced-repetition/fsrs-optimizer-rs/d22b53b34b7e8dcbc54c33878a082d636f8cae53 against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopen-spaced-repetition%2Ffsrs-optimizer-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/open-spaced-repetition/fsrs-optimizer-rs
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/open-spaced-repetition/fsrs-optimizer-rs
[INFO] tweaked toml for git repo https://github.com/open-spaced-repetition/fsrs-optimizer-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/open-spaced-repetition/fsrs-optimizer-rs on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/open-spaced-repetition/fsrs-optimizer-rs 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" "+1ef7943ee607160a564655b6596f83670ef95df5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded priority-queue v2.7.0
[INFO] [stderr]   Downloaded macerator-macros v0.1.1
[INFO] [stderr]   Downloaded unty v0.0.4
[INFO] [stderr]   Downloaded burn-ir v0.17.1
[INFO] [stderr]   Downloaded r2d2_sqlite v0.27.0
[INFO] [stderr]   Downloaded cubecl-macros-internal v0.5.0
[INFO] [stderr]   Downloaded cubecl-cuda v0.5.0
[INFO] [stderr]   Downloaded burn-wgpu v0.17.1
[INFO] [stderr]   Downloaded burn-cuda v0.17.1
[INFO] [stderr]   Downloaded gix-fs v0.15.0
[INFO] [stderr]   Downloaded burn-candle v0.17.1
[INFO] [stderr]   Downloaded burn-autodiff v0.17.1
[INFO] [stderr]   Downloaded cubecl-cpp v0.5.0
[INFO] [stderr]   Downloaded bincode v2.0.1
[INFO] [stderr]   Downloaded burn-core v0.17.1
[INFO] [stderr]   Downloaded cubecl-linalg v0.5.0
[INFO] [stderr]   Downloaded burn-dataset v0.17.1
[INFO] [stderr]   Downloaded burn-tensor v0.17.1
[INFO] [stderr]   Downloaded clap_builder v4.5.36
[INFO] [stderr]   Downloaded wgpu v25.0.0
[INFO] [stderr]   Downloaded candle-core v0.8.4
[INFO] [stderr]   Downloaded rusqlite v0.34.0
[INFO] [stderr]   Downloaded burn-train v0.17.1
[INFO] [stderr]   Downloaded burn-cubecl v0.17.1
[INFO] [stderr]   Downloaded wgpu-core v25.0.1
[INFO] [stderr]   Downloaded cubecl-core v0.5.0
[INFO] [stderr]   Downloaded wgpu-types v25.0.0
[INFO] [stderr]   Downloaded burn v0.17.1
[INFO] [stderr]   Downloaded cubecl-macros v0.5.0
[INFO] [stderr]   Downloaded cubecl-hip-sys v6.4.0
[INFO] [stderr]   Downloaded wgpu-hal v25.0.1
[INFO] [stderr]   Downloaded cubecl-wgpu v0.5.0
[INFO] [stderr]   Downloaded burn-ndarray v0.17.1
[INFO] [stderr]   Downloaded rstest_macros v0.25.0
[INFO] [stderr]   Downloaded rstest v0.25.0
[INFO] [stderr]   Downloaded cubecl-common v0.5.0
[INFO] [stderr]   Downloaded cubecl-runtime v0.5.0
[INFO] [stderr]   Downloaded cubecl v0.5.0
[INFO] [stderr]   Downloaded criterion v0.7.0
[INFO] [stderr]   Downloaded snafu v0.8.9
[INFO] [stderr]   Downloaded burn-router v0.17.1
[INFO] [stderr]   Downloaded gix-features v0.42.1
[INFO] [stderr]   Downloaded gix-validate v0.10.0
[INFO] [stderr]   Downloaded gix-path v0.10.17
[INFO] [stderr]   Downloaded macerator v0.2.6
[INFO] [stderr]   Downloaded cubecl-reduce v0.5.0
[INFO] [stderr]   Downloaded naga v25.0.1
[INFO] [stderr]   Downloaded cubecl-ir v0.5.0
[INFO] [stderr]   Downloaded clap v4.5.36
[INFO] [stderr]   Downloaded burn-rocm v0.17.1
[INFO] [stderr]   Downloaded chrono-tz v0.10.4
[INFO] [stderr]   Downloaded csv v1.4.0
[INFO] [stderr]   Downloaded gix-tempfile v17.1.0
[INFO] [stderr]   Downloaded serde_rusqlite v0.38.0
[INFO] [stderr]   Downloaded bytesize v1.3.3
[INFO] [stderr]   Downloaded wgpu-core-deps-apple v25.0.0
[INFO] [stderr]   Downloaded criterion-plot v0.6.0
[INFO] [stderr]   Downloaded snafu-derive v0.8.9
[INFO] [stderr]   Downloaded cubecl-hip v0.5.0
[INFO] [stderr]   Downloaded burn-common v0.17.1
[INFO] [stderr]   Downloaded cubecl-std v0.5.0
[INFO] [stderr]   Downloaded gix-utils v0.3.0
[INFO] [stderr]   Downloaded burn-derive v0.17.1
[INFO] [stderr]   Downloaded wgpu-core-deps-emscripten v25.0.0
[INFO] [stderr]   Downloaded wgpu-core-deps-windows-linux-android v25.0.0
[INFO] [stderr]   Downloaded cudarc v0.13.9
[INFO] [stderr]   Downloaded libsqlite3-sys v0.32.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55e222e1589b91319f2f13bc8a5085b4e63079901170959dcef578a6f6c0c8ec
[INFO] running `Command { std: "docker" "start" "-a" "55e222e1589b91319f2f13bc8a5085b4e63079901170959dcef578a6f6c0c8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55e222e1589b91319f2f13bc8a5085b4e63079901170959dcef578a6f6c0c8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55e222e1589b91319f2f13bc8a5085b4e63079901170959dcef578a6f6c0c8ec", kill_on_drop: false }`
[INFO] [stdout] 55e222e1589b91319f2f13bc8a5085b4e63079901170959dcef578a6f6c0c8ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+1ef7943ee607160a564655b6596f83670ef95df5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17fede51c9fc53e9fa4008cdf0fbd051e2cd8ec3a1b8a1e4b81d06909df8893b
[INFO] running `Command { std: "docker" "start" "-a" "17fede51c9fc53e9fa4008cdf0fbd051e2cd8ec3a1b8a1e4b81d06909df8893b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling cubecl-common v0.5.0
[INFO] [stderr]    Compiling embassy-futures v0.1.1
[INFO] [stderr]    Compiling futures-lite v2.6.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling portable-atomic v1.11.0
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling colored v3.0.0
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling rustix v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling deranged v0.4.0
[INFO] [stderr]    Compiling rstest_macros v0.25.0
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling thread-tree v0.3.3
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling rmp v0.8.14
[INFO] [stderr]    Compiling toml_edit v0.22.24
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling time-core v0.1.4
[INFO] [stderr]    Compiling miniz_oxide v0.8.8
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling time v0.3.41
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling unty v0.0.4
[INFO] [stderr]    Compiling burn-ndarray v0.17.1
[INFO] [stderr]    Compiling rand_distr v0.5.1
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling nvml-wrapper-sys v0.8.0
[INFO] [stderr]    Compiling flate2 v1.1.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling tempfile v3.19.1
[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/1ef7943ee607160a564655b6596f83670ef95df5/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.100/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"' --cfg 'feature="visit"' --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", "test", "visit", "visit-mut"))' -C metadata=14e7b4967feb2c97 -C extra-filename=-f420a3fb38c91c84 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-09040b10b620fa15.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-bff949ffe258c67d.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-b3925cc8f83e9ac1.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "17fede51c9fc53e9fa4008cdf0fbd051e2cd8ec3a1b8a1e4b81d06909df8893b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17fede51c9fc53e9fa4008cdf0fbd051e2cd8ec3a1b8a1e4b81d06909df8893b", kill_on_drop: false }`
[INFO] [stdout] 17fede51c9fc53e9fa4008cdf0fbd051e2cd8ec3a1b8a1e4b81d06909df8893b