[INFO] fetching crate halfpoint_rs 0.1.0...
[INFO] checking halfpoint_rs-0.1.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate halfpoint_rs 0.1.0 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate halfpoint_rs 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate halfpoint_rs 0.1.0
[INFO] finished tweaking crates.io crate halfpoint_rs 0.1.0
[INFO] tweaked toml for crates.io crate halfpoint_rs 0.1.0 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9740779e736a55a349aa19a7980eeee1801144103cf77b8f03224ab5aa121d67
[INFO] running `Command { std: "docker" "start" "-a" "9740779e736a55a349aa19a7980eeee1801144103cf77b8f03224ab5aa121d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9740779e736a55a349aa19a7980eeee1801144103cf77b8f03224ab5aa121d67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9740779e736a55a349aa19a7980eeee1801144103cf77b8f03224ab5aa121d67", kill_on_drop: false }`
[INFO] [stdout] 9740779e736a55a349aa19a7980eeee1801144103cf77b8f03224ab5aa121d67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3fd1f3b3625ca421db47561930653a4d4b44d4b9f354a22f4b720f0ea3f4a21
[INFO] running `Command { std: "docker" "start" "-a" "c3fd1f3b3625ca421db47561930653a4d4b44d4b9f354a22f4b720f0ea3f4a21", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling halfpoint_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[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 `halfpoint_rs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c3fd1f3b3625ca421db47561930653a4d4b44d4b9f354a22f4b720f0ea3f4a21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3fd1f3b3625ca421db47561930653a4d4b44d4b9f354a22f4b720f0ea3f4a21", kill_on_drop: false }`
[INFO] [stdout] c3fd1f3b3625ca421db47561930653a4d4b44d4b9f354a22f4b720f0ea3f4a21
