[INFO] fetching crate euka 0.0.1...
[INFO] checking euka-0.0.1 against master#893fadd11a52aa26fc19c67ee1b79f03d6a1bed3 for pr-77153
[INFO] extracting crate euka 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate euka 0.0.1 on toolchain 893fadd11a52aa26fc19c67ee1b79f03d6a1bed3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate euka 0.0.1
[INFO] finished tweaking crates.io crate euka 0.0.1
[INFO] tweaked toml for crates.io crate euka 0.0.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78868b2f21954208fef3b6b22b910c760989ab985846c7ac18843fe73ae178aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "78868b2f21954208fef3b6b22b910c760989ab985846c7ac18843fe73ae178aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78868b2f21954208fef3b6b22b910c760989ab985846c7ac18843fe73ae178aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78868b2f21954208fef3b6b22b910c760989ab985846c7ac18843fe73ae178aa", kill_on_drop: false }`
[INFO] [stdout] 78868b2f21954208fef3b6b22b910c760989ab985846c7ac18843fe73ae178aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d765a7bcf1ed4e66a6c17ad01e3647f90e92246b387f6e105f34e0786d7d35ad
[INFO] running `Command { std: "docker" "start" "-a" "d765a7bcf1ed4e66a6c17ad01e3647f90e92246b387f6e105f34e0786d7d35ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking blake2b_simd v0.5.10
[INFO] [stderr]    Compiling clear_on_drop v0.2.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]     Checking rayon v1.4.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling zeroize_derive v0.10.0
[INFO] [stderr]     Checking zeroize v0.10.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling curve25519-dalek v1.2.4
[INFO] [stderr]     Checking mohan v0.0.24
[INFO] [stderr]     Checking euka v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Hashable`
[INFO] [stdout]  --> src/euka_tree.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Hashable
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hashable`
[INFO] [stdout]  --> src/euka_tree.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Hashable
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.83s
[INFO] running `Command { std: "docker" "inspect" "d765a7bcf1ed4e66a6c17ad01e3647f90e92246b387f6e105f34e0786d7d35ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d765a7bcf1ed4e66a6c17ad01e3647f90e92246b387f6e105f34e0786d7d35ad", kill_on_drop: false }`
[INFO] [stdout] d765a7bcf1ed4e66a6c17ad01e3647f90e92246b387f6e105f34e0786d7d35ad