[INFO] fetching crate dusk-bls12_381-sign 0.1.0-rc.3...
[INFO] testing dusk-bls12_381-sign-0.1.0-rc.3 against 1.59.0 for beta-1.60-1
[INFO] extracting crate dusk-bls12_381-sign 0.1.0-rc.3 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate dusk-bls12_381-sign 0.1.0-rc.3 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dusk-bls12_381-sign 0.1.0-rc.3
[INFO] finished tweaking crates.io crate dusk-bls12_381-sign 0.1.0-rc.3
[INFO] tweaked toml for crates.io crate dusk-bls12_381-sign 0.1.0-rc.3 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba166867d23886d72ec4ec1f2766e23d59a330a12487107ec7ed8890a5714677
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba166867d23886d72ec4ec1f2766e23d59a330a12487107ec7ed8890a5714677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba166867d23886d72ec4ec1f2766e23d59a330a12487107ec7ed8890a5714677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba166867d23886d72ec4ec1f2766e23d59a330a12487107ec7ed8890a5714677", kill_on_drop: false }`
[INFO] [stdout] ba166867d23886d72ec4ec1f2766e23d59a330a12487107ec7ed8890a5714677
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2c04554afcce3793993d1f402db2564281bc34f9fab1669cd04e6c457d4564c6
[INFO] running `Command { std: "docker" "start" "-a" "2c04554afcce3793993d1f402db2564281bc34f9fab1669cd04e6c457d4564c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling crypto-common v0.1.3
[INFO] [stderr]    Compiling derive-hex v0.1.2
[INFO] [stderr]    Compiling digest v0.10.3
[INFO] [stderr]    Compiling blake2 v0.10.4
[INFO] [stderr]    Compiling dusk-bytes v0.1.5
[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/dusk-bytes-0.1.5/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(const_panic)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_panic` has been stable since 1.57.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dusk-bytes` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2c04554afcce3793993d1f402db2564281bc34f9fab1669cd04e6c457d4564c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c04554afcce3793993d1f402db2564281bc34f9fab1669cd04e6c457d4564c6", kill_on_drop: false }`
[INFO] [stdout] 2c04554afcce3793993d1f402db2564281bc34f9fab1669cd04e6c457d4564c6