[INFO] cloning repository https://github.com/tracel-ai/burn-central-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tracel-ai/burn-central-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracel-ai%2Fburn-central-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracel-ai%2Fburn-central-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef3a0979b3e3ee3ccdea977f197b2a7b39dcb0f8
[INFO] documenting tracel-ai/burn-central-example 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%2Ftracel-ai%2Fburn-central-example" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/tracel-ai/burn-central-example
[INFO] finished tweaking git repo https://github.com/tracel-ai/burn-central-example
[INFO] tweaked toml for git repo https://github.com/tracel-ai/burn-central-example written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tracel-ai/burn-central-example 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/tracel-ai/burn-central-example 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] 63fc1f7092ccc5a0f1891d384c05a264bf3f342080c8551fed63fa86d656a54b
[INFO] running `Command { std: "docker" "start" "-a" "63fc1f7092ccc5a0f1891d384c05a264bf3f342080c8551fed63fa86d656a54b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63fc1f7092ccc5a0f1891d384c05a264bf3f342080c8551fed63fa86d656a54b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63fc1f7092ccc5a0f1891d384c05a264bf3f342080c8551fed63fa86d656a54b", kill_on_drop: false }`
[INFO] [stdout] 63fc1f7092ccc5a0f1891d384c05a264bf3f342080c8551fed63fa86d656a54b
[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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a07a0e0f3f294106d3b4047e2c48a439992c93624bab9879bfaa04e585903057
[INFO] running `Command { std: "docker" "start" "-a" "a07a0e0f3f294106d3b4047e2c48a439992c93624bab9879bfaa04e585903057", kill_on_drop: false }`
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[INFO] [stderr]    Compiling burn-central-macros v0.6.0
[INFO] [stderr]     Checking rustls-webpki v0.103.10
[INFO] [stderr]     Checking tokio-rustls v0.26.4
[INFO] [stderr]     Checking rustls-platform-verifier v0.6.2
[INFO] [stderr]     Checking hyper-rustls v0.27.7
[INFO] [stderr]     Checking reqwest v0.12.28
[INFO] [stderr]     Checking reqwest v0.13.2
[INFO] [stderr]     Checking burn-std v0.20.1
[INFO] [stderr]     Checking burn-central-client v0.6.1
[INFO] [stderr]     Checking burn-central-artifact v0.6.0
[INFO] [stderr]     Checking burn-backend v0.20.1
[INFO] [stderr]     Checking burn-dataset v0.20.1
[INFO] [stderr]     Checking burn-ir v0.20.1
[INFO] [stderr]     Checking burn-tensor v0.20.1
[INFO] [stderr]     Checking burn-autodiff v0.20.1
[INFO] [stderr]     Checking burn-vision v0.20.1
[INFO] [stderr]     Checking burn-core v0.20.1
[INFO] [stderr]     Checking burn-optim v0.20.1
[INFO] [stderr]     Checking burn-nn v0.20.1
[INFO] [stderr]     Checking burn-train v0.20.1
[INFO] [stderr]     Checking burn v0.20.1
[INFO] [stderr]     Checking burn-central-fleet v0.6.0
[INFO] [stderr]     Checking burn-central-experiment v0.6.0
[INFO] [stderr]     Checking burn-central-runtime v0.6.0
[INFO] [stderr]     Checking burn-central v0.6.0
[INFO] [stderr]  Documenting burn-central-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 17s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/burn_central_example/index.html
[INFO] running `Command { std: "docker" "inspect" "a07a0e0f3f294106d3b4047e2c48a439992c93624bab9879bfaa04e585903057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a07a0e0f3f294106d3b4047e2c48a439992c93624bab9879bfaa04e585903057", kill_on_drop: false }`
[INFO] [stdout] a07a0e0f3f294106d3b4047e2c48a439992c93624bab9879bfaa04e585903057
[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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3acb268c3c75b94b0f41a677c9f4c49e3db73bb1705727036206de6f753be132
[INFO] running `Command { std: "docker" "start" "-a" "3acb268c3c75b94b0f41a677c9f4c49e3db73bb1705727036206de6f753be132", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]     Checking quote v1.0.45
[INFO] [stderr]     Checking syn v2.0.117
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling darling_core v0.23.0
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling zerocopy-derive v0.8.47
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.6.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling derive-new v0.7.0
[INFO] [stderr]    Compiling equator-macro v0.4.2
[INFO] [stderr]    Compiling profiling-procmacros v1.0.17
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]     Checking tokio v1.50.0
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking profiling v1.0.17
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking equator v0.4.2
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling fax_derive v0.2.0
[INFO] [stderr]     Checking aligned-vec v0.6.4
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]    Compiling burn-derive v0.20.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking v_frame v0.3.9
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerocopy v0.8.47
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking qoi v0.4.1
[INFO] [stderr]     Checking av1-grain v0.2.5
[INFO] [stderr]     Checking av-scenechange v0.14.1
[INFO] [stderr]     Checking fax v0.2.6
[INFO] [stderr]     Checking tracing-subscriber v0.3.23
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling rstest_macros v0.26.1
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr] error: could not compile `tokio` (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 tokio --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.50.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --warn=unexpected_cfgs --check-cfg 'cfg(fuzzing)' --check-cfg 'cfg(loom)' --check-cfg 'cfg(mio_unsupported_force_poll_poll)' --check-cfg 'cfg(tokio_allow_from_blocking_fd)' --check-cfg 'cfg(tokio_internal_mt_counters)' --check-cfg 'cfg(tokio_no_parking_lot)' --check-cfg 'cfg(tokio_no_tuning_tests)' --check-cfg 'cfg(tokio_unstable)' --check-cfg 'cfg(target_os, values("cygwin"))' --cfg 'feature="bytes"' --cfg 'feature="default"' --cfg 'feature="io-util"' --cfg 'feature="libc"' --cfg 'feature="macros"' --cfg 'feature="mio"' --cfg 'feature="net"' --cfg 'feature="rt"' --cfg 'feature="socket2"' --cfg 'feature="sync"' --cfg 'feature="time"' --cfg 'feature="tokio-macros"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bytes", "default", "fs", "full", "io-std", "io-uring", "io-util", "libc", "macros", "mio", "net", "parking_lot", "process", "rt", "rt-multi-thread", "signal", "signal-hook-registry", "socket2", "sync", "taskdump", "test-util", "time", "tokio-macros", "tracing", "windows-sys"))' -C metadata=762a010cd6d10c8e -C extra-filename=-9a99ae60b4b9e676 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-363745c8aab0b500.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-ae5394283cf65e2b.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-920bada4e04c227e.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-835c1b1646f3479f.rmeta --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-b24f5009e3da9916.rmeta --extern tokio_macros=/opt/rustwide/target/debug/deps/libtokio_macros-36a153727f9d726e.so --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" "3acb268c3c75b94b0f41a677c9f4c49e3db73bb1705727036206de6f753be132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3acb268c3c75b94b0f41a677c9f4c49e3db73bb1705727036206de6f753be132", kill_on_drop: false }`
[INFO] [stdout] 3acb268c3c75b94b0f41a677c9f4c49e3db73bb1705727036206de6f753be132