[INFO] fetching crate lcpc-ligero-pc 0.1.1...
[INFO] testing lcpc-ligero-pc-0.1.1 against 1.69.0 for beta-1.70-1
[INFO] extracting crate lcpc-ligero-pc 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate lcpc-ligero-pc 0.1.1 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lcpc-ligero-pc 0.1.1
[INFO] finished tweaking crates.io crate lcpc-ligero-pc 0.1.1
[INFO] tweaked toml for crates.io crate lcpc-ligero-pc 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ff-derive-num v0.2.0
[INFO] [stderr]   Downloaded ff_derive v0.12.1
[INFO] [stderr]   Downloaded addchain v0.2.0
[INFO] [stderr]   Downloaded lcpc-2d v0.1.1
[INFO] [stderr]   Downloaded fffft v0.4.1
[INFO] [stderr]   Downloaded lcpc-test-fields v0.1.1
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a1efa750e4e802fc49e54f48d088970a046e9f722dcb7f19e3d89c7f75fa88d
[INFO] running `Command { std: "docker" "start" "-a" "7a1efa750e4e802fc49e54f48d088970a046e9f722dcb7f19e3d89c7f75fa88d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a1efa750e4e802fc49e54f48d088970a046e9f722dcb7f19e3d89c7f75fa88d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a1efa750e4e802fc49e54f48d088970a046e9f722dcb7f19e3d89c7f75fa88d", kill_on_drop: false }`
[INFO] [stdout] 7a1efa750e4e802fc49e54f48d088970a046e9f722dcb7f19e3d89c7f75fa88d
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7832da406c3663116f270fad9f42ef978d1cefc14580d0673e9dc42e098fa227
[INFO] running `Command { std: "docker" "start" "-a" "7832da406c3663116f270fad9f42ef978d1cefc14580d0673e9dc42e098fa227", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling addchain v0.2.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling ff_derive v0.12.1
[INFO] [stderr]    Compiling zeroize v1.6.0
[INFO] [stderr]    Compiling merlin v2.0.1
[INFO] [stderr]    Compiling ff v0.12.1
[INFO] [stderr]    Compiling fffft v0.4.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fffft-0.4.1/src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(test)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fffft` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7832da406c3663116f270fad9f42ef978d1cefc14580d0673e9dc42e098fa227", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7832da406c3663116f270fad9f42ef978d1cefc14580d0673e9dc42e098fa227", kill_on_drop: false }`
[INFO] [stdout] 7832da406c3663116f270fad9f42ef978d1cefc14580d0673e9dc42e098fa227
