[INFO] fetching crate rust-rel8 0.1.4...
[INFO] testing rust-rel8-0.1.4 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rust-rel8 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rust-rel8 0.1.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rust-rel8 0.1.4
[INFO] tweaked toml for crates.io crate rust-rel8 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-rel8 0.1.4 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 rust-rel8 0.1.4 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] a2129e31b57f52f65cce4f52458bb9c6f8439815f9374fe6a15f36333d5388ab
[INFO] running `Command { std: "docker" "start" "-a" "a2129e31b57f52f65cce4f52458bb9c6f8439815f9374fe6a15f36333d5388ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2129e31b57f52f65cce4f52458bb9c6f8439815f9374fe6a15f36333d5388ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2129e31b57f52f65cce4f52458bb9c6f8439815f9374fe6a15f36333d5388ab", kill_on_drop: false }`
[INFO] [stdout] a2129e31b57f52f65cce4f52458bb9c6f8439815f9374fe6a15f36333d5388ab
[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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fc1a8e4cfd1b0324af91de454aa4a0b5ddead37219c3f474e1917e06bbd2456
[INFO] running `Command { std: "docker" "start" "-a" "0fc1a8e4cfd1b0324af91de454aa4a0b5ddead37219c3f474e1917e06bbd2456", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling zmij v1.0.15
[INFO] [stderr]    Compiling tinystr v0.8.2
[INFO] [stderr]    Compiling zerotrie v0.2.3
[INFO] [stderr]    Compiling potential_utf v0.1.4
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling crc-catalog v2.4.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling tinyvec v1.10.0
[INFO] [stderr]    Compiling crc v3.4.0
[INFO] [stderr]    Compiling icu_locale_core v2.1.1
[INFO] [stderr]    Compiling icu_collections v2.1.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling hashlink v0.10.0
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.18
[INFO] [stderr]    Compiling unicode-properties v0.1.4
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling home v0.5.12
[INFO] [stderr]    Compiling whoami v1.6.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.25
[INFO] [stderr]    Compiling dotenvy v0.15.7
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling icu_provider v2.1.1
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling icu_properties v2.1.2
[INFO] [stderr]    Compiling icu_normalizer v2.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling hkdf v0.12.4
[INFO] [stderr]    Compiling md-5 v0.10.6
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling darling_core v0.23.0
[INFO] [stderr]    Compiling type-equalities v0.3.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling stringprep v0.1.5
[INFO] [stderr]    Compiling inherent v1.0.13
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling sea-query v1.0.0-rc.29
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling variadics_please v1.1.0
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling sqlx-core v0.8.6
[INFO] [stderr]    Compiling darling_macro v0.23.0
[INFO] [stderr]    Compiling darling v0.23.0
[INFO] [stderr]    Compiling rust-rel8-derive v0.1.1
[INFO] [stderr]    Compiling cps v0.2.3
[INFO] [stderr]    Compiling perfect-derive v0.1.5
[INFO] [stderr]    Compiling sqlx-postgres v0.8.6
[INFO] [stderr]    Compiling sqlx-macros-core v0.8.6
[INFO] [stderr]    Compiling sqlx-macros v0.8.6
[INFO] [stderr]    Compiling sqlx v0.8.6
[INFO] [stderr]    Compiling sea-query-sqlx v0.8.0-rc.11
[INFO] [stderr]    Compiling rust-rel8 v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unboxed_closures)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-rel8` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0fc1a8e4cfd1b0324af91de454aa4a0b5ddead37219c3f474e1917e06bbd2456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc1a8e4cfd1b0324af91de454aa4a0b5ddead37219c3f474e1917e06bbd2456", kill_on_drop: false }`
[INFO] [stdout] 0fc1a8e4cfd1b0324af91de454aa4a0b5ddead37219c3f474e1917e06bbd2456
