[INFO] fetching crate nuit 0.2.0...
[INFO] testing nuit-0.2.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate nuit 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate nuit 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate nuit 0.2.0
[INFO] tweaked toml for crates.io crate nuit 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nuit 0.2.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nuit 0.2.0 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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 459206be193f5a9d4b497c69f907bdb97385e29f021c1f5da28aa933697acc7b
[INFO] running `Command { std: "docker" "start" "-a" "459206be193f5a9d4b497c69f907bdb97385e29f021c1f5da28aa933697acc7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "459206be193f5a9d4b497c69f907bdb97385e29f021c1f5da28aa933697acc7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "459206be193f5a9d4b497c69f907bdb97385e29f021c1f5da28aa933697acc7b", kill_on_drop: false }`
[INFO] [stdout] 459206be193f5a9d4b497c69f907bdb97385e29f021c1f5da28aa933697acc7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 728131573b0fbd0d5a7855eccc5417e47039d93adf143e18b2c507ac4b13bd2e
[INFO] running `Command { std: "docker" "start" "-a" "728131573b0fbd0d5a7855eccc5417e47039d93adf143e18b2c507ac4b13bd2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling gio v0.20.1
[INFO] [stderr]    Compiling futures-io v0.3.30
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling ref-cast v1.0.23
[INFO] [stderr]    Compiling cfg-expr v0.16.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling field-offset v0.3.6
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling ref-cast-impl v1.0.23
[INFO] [stderr]    Compiling nuit-derive v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nuit-derive-0.2.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nuit-derive` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "728131573b0fbd0d5a7855eccc5417e47039d93adf143e18b2c507ac4b13bd2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "728131573b0fbd0d5a7855eccc5417e47039d93adf143e18b2c507ac4b13bd2e", kill_on_drop: false }`
[INFO] [stdout] 728131573b0fbd0d5a7855eccc5417e47039d93adf143e18b2c507ac4b13bd2e
