[INFO] fetching crate muta-protocol 0.1.0-alpha.1... [INFO] testing muta-protocol-0.1.0-alpha.1 against beta-2022-04-10 for beta-1.61-1 [INFO] extracting crate muta-protocol 0.1.0-alpha.1 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate muta-protocol 0.1.0-alpha.1 on toolchain beta-2022-04-10 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate muta-protocol 0.1.0-alpha.1 [INFO] finished tweaking crates.io crate muta-protocol 0.1.0-alpha.1 [INFO] tweaked toml for crates.io crate muta-protocol 0.1.0-alpha.1 written to /workspace/builds/worker-6/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] df4f6a730c628006c37574688bc7e887a9c870ad131684684dd2ef2a12acfcab [INFO] running `Command { std: "docker" "start" "-a" "df4f6a730c628006c37574688bc7e887a9c870ad131684684dd2ef2a12acfcab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "df4f6a730c628006c37574688bc7e887a9c870ad131684684dd2ef2a12acfcab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df4f6a730c628006c37574688bc7e887a9c870ad131684684dd2ef2a12acfcab", kill_on_drop: false }` [INFO] [stdout] df4f6a730c628006c37574688bc7e887a9c870ad131684684dd2ef2a12acfcab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 799a149774fc35680dfca571ba4bcb8637a99ded19888767c92689274840797d [INFO] running `Command { std: "docker" "start" "-a" "799a149774fc35680dfca571ba4bcb8637a99ded19888767c92689274840797d", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.91 [INFO] [stderr] Compiling libc v0.2.123 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Compiling rustc-hex v2.1.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling heapsize v0.4.2 [INFO] [stderr] Compiling crunchy v0.1.6 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Compiling tiny-keccak v2.0.2 [INFO] [stderr] Compiling anyhow v1.0.56 [INFO] [stderr] Compiling futures-sink v0.3.21 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling hashbrown v0.3.1 [INFO] [stderr] Compiling creep v0.1.1 [INFO] [stderr] Compiling json v0.12.4 [INFO] [stderr] Compiling hex v0.3.2 [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-bigint v0.2.6 [INFO] [stderr] Compiling lock_api v0.2.0 [INFO] [stderr] Compiling rlp v0.4.6 [INFO] [stderr] Compiling itertools v0.8.2 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling rand_jitter v0.1.4 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling rand_hc v0.1.0 [INFO] [stderr] Compiling rand_isaac v0.1.1 [INFO] [stderr] Compiling rand_xorshift v0.1.1 [INFO] [stderr] Compiling impl-rlp v0.2.1 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling tiny-keccak v1.5.0 [INFO] [stderr] Compiling smallvec v0.6.14 [INFO] [stderr] Compiling uint v0.4.1 [INFO] [stderr] Compiling hasher v0.1.4 [INFO] [stderr] Compiling parking_lot_core v0.5.0 [INFO] [stderr] Compiling parking_lot v0.8.0 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling fixed-hash v0.2.5 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling fixed-hash v0.5.2 [INFO] [stderr] Compiling derive_more v0.15.0 [INFO] [stderr] Compiling serde_derive v1.0.136 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling prost-derive v0.6.1 [INFO] [stderr] Compiling async-trait v0.1.53 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling prost v0.6.1 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Compiling futures-executor v0.3.21 [INFO] [stderr] Compiling futures v0.3.21 [INFO] [stderr] Compiling ethereum-types-serialize v0.2.2 [INFO] [stderr] Compiling impl-serde v0.2.3 [INFO] [stderr] Compiling bincode v1.3.3 [INFO] [stderr] Compiling serde_json v1.0.79 [INFO] [stderr] Compiling ethbloom v0.5.3 [INFO] [stderr] Compiling ethbloom v0.8.1 [INFO] [stderr] Compiling ethereum-types v0.4.2 [INFO] [stderr] Compiling rlp v0.3.0 [INFO] [stderr] Compiling cita_trie v2.0.0 [INFO] [stderr] Compiling muta-protocol v0.1.0-alpha.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![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 `muta-protocol` due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "799a149774fc35680dfca571ba4bcb8637a99ded19888767c92689274840797d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "799a149774fc35680dfca571ba4bcb8637a99ded19888767c92689274840797d", kill_on_drop: false }` [INFO] [stdout] 799a149774fc35680dfca571ba4bcb8637a99ded19888767c92689274840797d