[INFO] cloning repository https://github.com/rylev/hashmap-compare
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rylev/hashmap-compare" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylev%2Fhashmap-compare", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylev%2Fhashmap-compare'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 57c5a6f7acff01af9969ae949c08a1a6bae13e09
[INFO] testing rylev/hashmap-compare against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frylev%2Fhashmap-compare" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rylev/hashmap-compare 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 git repo https://github.com/rylev/hashmap-compare
[INFO] finished tweaking git repo https://github.com/rylev/hashmap-compare
[INFO] tweaked toml for git repo https://github.com/rylev/hashmap-compare written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/rylev/hashmap-compare already has a lockfile, it will not be regenerated
[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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 6ddfc00b2601c7c6793e1d54abddcb796a0d0530520c2b9f210d18a994ce2ff7
[INFO] running `Command { std: "docker" "start" "-a" "6ddfc00b2601c7c6793e1d54abddcb796a0d0530520c2b9f210d18a994ce2ff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ddfc00b2601c7c6793e1d54abddcb796a0d0530520c2b9f210d18a994ce2ff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ddfc00b2601c7c6793e1d54abddcb796a0d0530520c2b9f210d18a994ce2ff7", kill_on_drop: false }`
[INFO] [stdout] 6ddfc00b2601c7c6793e1d54abddcb796a0d0530520c2b9f210d18a994ce2ff7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e4a790a2b948ad68dccd523b01a969e32edb5d61a87df5d9ea96f15d5b7987d
[INFO] running `Command { std: "docker" "start" "-a" "6e4a790a2b948ad68dccd523b01a969e32edb5d61a87df5d9ea96f15d5b7987d", kill_on_drop: false }`
[INFO] [stderr]    Compiling hash-compare v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "6e4a790a2b948ad68dccd523b01a969e32edb5d61a87df5d9ea96f15d5b7987d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e4a790a2b948ad68dccd523b01a969e32edb5d61a87df5d9ea96f15d5b7987d", kill_on_drop: false }`
[INFO] [stdout] 6e4a790a2b948ad68dccd523b01a969e32edb5d61a87df5d9ea96f15d5b7987d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21e2b57e50f72e532c8216d1130fc8bfc22b738261668982b2477e971a671e84
[INFO] running `Command { std: "docker" "start" "-a" "21e2b57e50f72e532c8216d1130fc8bfc22b738261668982b2477e971a671e84", kill_on_drop: false }`
[INFO] [stderr]    Compiling hash-compare v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hash-compare` due to 2 previous errors
[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] running `Command { std: "docker" "inspect" "21e2b57e50f72e532c8216d1130fc8bfc22b738261668982b2477e971a671e84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21e2b57e50f72e532c8216d1130fc8bfc22b738261668982b2477e971a671e84", kill_on_drop: false }`
[INFO] [stdout] 21e2b57e50f72e532c8216d1130fc8bfc22b738261668982b2477e971a671e84