[INFO] fetching crate lightstream 0.1.0...
[INFO] testing lightstream-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate lightstream 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate lightstream 0.1.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate lightstream 0.1.0
[INFO] tweaked toml for crates.io crate lightstream 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lightstream 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lightstream 0.1.0 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.0
[INFO] [stderr]   Downloaded cc v1.2.35
[INFO] [stderr]   Downloaded minarrow v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37f0417385491c970062b45f4efd604d1a089128655d2b133fbaaa137e2f8ada
[INFO] running `Command { std: "docker" "start" "-a" "37f0417385491c970062b45f4efd604d1a089128655d2b133fbaaa137e2f8ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37f0417385491c970062b45f4efd604d1a089128655d2b133fbaaa137e2f8ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f0417385491c970062b45f4efd604d1a089128655d2b133fbaaa137e2f8ada", kill_on_drop: false }`
[INFO] [stdout] 37f0417385491c970062b45f4efd604d1a089128655d2b133fbaaa137e2f8ada
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbd450fac9fb806003d2e9257f8829b7e99f04efa309588f1b83dd3f5006dc5e
[INFO] running `Command { std: "docker" "start" "-a" "fbd450fac9fb806003d2e9257f8829b7e99f04efa309588f1b83dd3f5006dc5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling minarrow v0.2.1
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.105
[INFO] [stderr]    Compiling flatbuffers v25.2.10
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/minarrow-0.2.1/src/lib.rs:83:1
[INFO] [stdout]    |
[INFO] [stdout] 83 | #![feature(allocator_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/minarrow-0.2.1/src/lib.rs:84:1
[INFO] [stdout]    |
[INFO] [stdout] 84 | #![feature(slice_ptr_get)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/minarrow-0.2.1/src/lib.rs:85:1
[INFO] [stdout]    |
[INFO] [stdout] 85 | #![feature(portable_simd)]
[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 `minarrow` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fbd450fac9fb806003d2e9257f8829b7e99f04efa309588f1b83dd3f5006dc5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbd450fac9fb806003d2e9257f8829b7e99f04efa309588f1b83dd3f5006dc5e", kill_on_drop: false }`
[INFO] [stdout] fbd450fac9fb806003d2e9257f8829b7e99f04efa309588f1b83dd3f5006dc5e