[INFO] fetching crate research 0.1.22...
[INFO] testing research-0.1.22 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate research 0.1.22 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate research 0.1.22
[INFO] finished tweaking crates.io crate research 0.1.22
[INFO] tweaked toml for crates.io crate research 0.1.22 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate research 0.1.22 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 crates.io crate research 0.1.22 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-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] 2e88bb9c489bcd596fad19b4048033edadf152c3c23e4069c3889d10fb06512c
[INFO] running `Command { std: "docker" "start" "-a" "2e88bb9c489bcd596fad19b4048033edadf152c3c23e4069c3889d10fb06512c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e88bb9c489bcd596fad19b4048033edadf152c3c23e4069c3889d10fb06512c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e88bb9c489bcd596fad19b4048033edadf152c3c23e4069c3889d10fb06512c", kill_on_drop: false }`
[INFO] [stdout] 2e88bb9c489bcd596fad19b4048033edadf152c3c23e4069c3889d10fb06512c
[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] 23fbacd5415bab793541841e4df08e32ba959fd6de625b608f87e065b522b5b0
[INFO] running `Command { std: "docker" "start" "-a" "23fbacd5415bab793541841e4df08e32ba959fd6de625b608f87e065b522b5b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling litemap v0.7.4
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling bytes v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling foldhash v0.1.4
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling cc v1.2.14
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.0
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling serde_json v1.0.139
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling event-listener v5.4.0
[INFO] [stderr]    Compiling http v1.2.0
[INFO] [stderr]    Compiling crc v3.2.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.6
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling hashlink v0.10.0
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling tokio v1.43.0
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling winnow v0.7.3
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling flume v0.11.1
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling sailfish-compiler v0.9.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling dtoa v1.0.9
[INFO] [stderr]    Compiling openssl-probe v0.1.6
[INFO] [stderr]    Compiling openssl-sys v0.9.106
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling dtoa-short v0.3.5
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling dotenvy v0.15.7
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling phf v0.10.1
[INFO] [stderr]    Compiling servo_arc v0.3.0
[INFO] [stderr]    Compiling sailfish v0.9.0
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling rustls-pki-types v1.11.0
[INFO] [stderr]    Compiling clap_builder v4.5.30
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr] error: could not compile `futures-util` (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 futures_util --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-0.3.31/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 --warn=unreachable_pub --warn=unexpected_cfgs --warn=single_use_lifetimes --warn=rust_2018_idioms --warn=missing_debug_implementations --check-cfg 'cfg(futures_sanitizer)' --cfg 'feature="alloc"' --cfg 'feature="futures-io"' --cfg 'feature="futures-sink"' --cfg 'feature="io"' --cfg 'feature="memchr"' --cfg 'feature="sink"' --cfg 'feature="slab"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "async-await", "async-await-macro", "bilock", "cfg-target-has-atomic", "channel", "compat", "default", "futures-channel", "futures-io", "futures-macro", "futures-sink", "futures_01", "io", "io-compat", "memchr", "portable-atomic", "sink", "slab", "std", "tokio-io", "unstable", "write-all-vectored"))' -C metadata=e4a9055824b0cdfd -C extra-filename=-41507541635681b2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-5b72dc92615109c0.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-258036931af483fb.rmeta --extern futures_sink=/opt/rustwide/target/debug/deps/libfutures_sink-f27e4d8b6e8d65ae.rmeta --extern futures_task=/opt/rustwide/target/debug/deps/libfutures_task-95d34631e5fd30be.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-b178a40a7718f9bf.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-63e0d9d6cb6ec6cf.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-e0a199353c6bf870.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-2e4cb246cb0324b8.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" "23fbacd5415bab793541841e4df08e32ba959fd6de625b608f87e065b522b5b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23fbacd5415bab793541841e4df08e32ba959fd6de625b608f87e065b522b5b0", kill_on_drop: false }`
[INFO] [stdout] 23fbacd5415bab793541841e4df08e32ba959fd6de625b608f87e065b522b5b0