[INFO] fetching crate quadboard 0.1.0...
[INFO] testing quadboard-0.1.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate quadboard 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate quadboard 0.1.0
[INFO] finished tweaking crates.io crate quadboard 0.1.0
[INFO] tweaked toml for crates.io crate quadboard 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate quadboard 0.1.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding halfling v0.4.1 (available: v0.8.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded halfling v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41e99d0b31ec151a661a08eb21428e45dd68898d00bdecea0a998a3c8ead6805
[INFO] running `Command { std: "docker" "start" "-a" "41e99d0b31ec151a661a08eb21428e45dd68898d00bdecea0a998a3c8ead6805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41e99d0b31ec151a661a08eb21428e45dd68898d00bdecea0a998a3c8ead6805", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41e99d0b31ec151a661a08eb21428e45dd68898d00bdecea0a998a3c8ead6805", kill_on_drop: false }`
[INFO] [stdout] 41e99d0b31ec151a661a08eb21428e45dd68898d00bdecea0a998a3c8ead6805
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2eb06e92b24528b822ff7dbc2bd658d59d365a5f640c7b79805323ebcc47a1a7
[INFO] running `Command { std: "docker" "start" "-a" "2eb06e92b24528b822ff7dbc2bd658d59d365a5f640c7b79805323ebcc47a1a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling halfling v0.4.1
[INFO] [stderr]    Compiling quadboard v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![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 `quadboard` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2eb06e92b24528b822ff7dbc2bd658d59d365a5f640c7b79805323ebcc47a1a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eb06e92b24528b822ff7dbc2bd658d59d365a5f640c7b79805323ebcc47a1a7", kill_on_drop: false }`
[INFO] [stdout] 2eb06e92b24528b822ff7dbc2bd658d59d365a5f640c7b79805323ebcc47a1a7
