[INFO] fetching crate small-rngs 0.0.1...
[INFO] checking small-rngs-0.0.1 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate small-rngs 0.0.1 into /workspace/builds/worker-56/source
[INFO] validating manifest of crates.io crate small-rngs 0.0.1 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate small-rngs 0.0.1
[INFO] finished tweaking crates.io crate small-rngs 0.0.1
[INFO] tweaked toml for crates.io crate small-rngs 0.0.1 written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d21978da3684a2ed0dc4b6cf0ac65eeb26c1dfde62eb12c8e32759a504f5feb
[INFO] running `Command { std: "docker" "start" "-a" "3d21978da3684a2ed0dc4b6cf0ac65eeb26c1dfde62eb12c8e32759a504f5feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d21978da3684a2ed0dc4b6cf0ac65eeb26c1dfde62eb12c8e32759a504f5feb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d21978da3684a2ed0dc4b6cf0ac65eeb26c1dfde62eb12c8e32759a504f5feb", kill_on_drop: false }`
[INFO] [stdout] 3d21978da3684a2ed0dc4b6cf0ac65eeb26c1dfde62eb12c8e32759a504f5feb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3871a51868bb631a269a6a2328d5c6c89f5165bd6a792b5b5e139f302a08582
[INFO] running `Command { std: "docker" "start" "-a" "b3871a51868bb631a269a6a2328d5c6c89f5165bd6a792b5b5e139f302a08582", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]     Checking small-rngs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/generators.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![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 `small-rngs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b3871a51868bb631a269a6a2328d5c6c89f5165bd6a792b5b5e139f302a08582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3871a51868bb631a269a6a2328d5c6c89f5165bd6a792b5b5e139f302a08582", kill_on_drop: false }`
[INFO] [stdout] b3871a51868bb631a269a6a2328d5c6c89f5165bd6a792b5b5e139f302a08582
