[INFO] fetching crate mb_rand 0.2.0...
[INFO] checking mb_rand-0.2.0 against 1.95.0 for pr-155915
[INFO] extracting crate mb_rand 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate mb_rand 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mb_rand 0.2.0
[INFO] tweaked toml for crates.io crate mb_rand 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mb_rand 0.2.0 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] crate crates.io crate mb_rand 0.2.0 already has a lockfile, it will not be regenerated
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d88abb1c07a3151b2a6cc21f5f3d4331322631f6f0e7a642360592fb52ab23db
[INFO] running `Command { std: "docker" "start" "-a" "d88abb1c07a3151b2a6cc21f5f3d4331322631f6f0e7a642360592fb52ab23db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d88abb1c07a3151b2a6cc21f5f3d4331322631f6f0e7a642360592fb52ab23db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d88abb1c07a3151b2a6cc21f5f3d4331322631f6f0e7a642360592fb52ab23db", kill_on_drop: false }`
[INFO] [stdout] d88abb1c07a3151b2a6cc21f5f3d4331322631f6f0e7a642360592fb52ab23db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b92f06d58ebe24130b93073063e90622d2f4bcd6cf92a2e375067f85dfbddf1
[INFO] running `Command { std: "docker" "start" "-a" "6b92f06d58ebe24130b93073063e90622d2f4bcd6cf92a2e375067f85dfbddf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling mb_rand v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: mb_rand@0.2.0: This crate requires libbsd on Linux. Install it with your package manager (e.g., 'apt install libbsd-dev' on Debian/Ubuntu).
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> benches/benchmark.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: mb_rand@0.2.0: This crate requires libbsd on Linux. Install it with your package manager (e.g., 'apt install libbsd-dev' on Debian/Ubuntu).
[INFO] [stderr] error: could not compile `mb_rand` (bench "benchmark") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6b92f06d58ebe24130b93073063e90622d2f4bcd6cf92a2e375067f85dfbddf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b92f06d58ebe24130b93073063e90622d2f4bcd6cf92a2e375067f85dfbddf1", kill_on_drop: false }`
[INFO] [stdout] 6b92f06d58ebe24130b93073063e90622d2f4bcd6cf92a2e375067f85dfbddf1
