[INFO] fetching crate hexe 0.0.5...
[INFO] extracting crate hexe 0.0.5 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/hexe/0.0.5
[INFO] extracting crate hexe 0.0.5 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/hexe/0.0.5
[INFO] validating manifest of hexe-0.0.5 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hexe-0.0.5 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hexe-0.0.5
[INFO] finished frobbing hexe-0.0.5
[INFO] frobbed toml for hexe-0.0.5 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/hexe/0.0.5/Cargo.toml
[INFO] started frobbing hexe-0.0.5
[INFO] finished frobbing hexe-0.0.5
[INFO] frobbed toml for hexe-0.0.5 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/hexe/0.0.5/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hexe_core v0.0.5
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking hexe-0.0.5 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/hexe/0.0.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fdd9cc11a3bc2323cb414f4099cf6b856a230f395ec4b28299f9fc2b5f155b47
[INFO] running `"docker" "start" "-a" "fdd9cc11a3bc2323cb414f4099cf6b856a230f395ec4b28299f9fc2b5f155b47"`
[INFO] [stderr]     Checking uncon v1.1.0
[INFO] [stderr]    Compiling uncon_derive v1.1.1
[INFO] [stderr]     Checking hexe_core v0.0.5
[INFO] [stderr]     Checking hexe v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]   --> src/position/mod.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let src = mv.src();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_src`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dst`
[INFO] [stderr]   --> src/position/mod.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let dst = mv.dst();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_dst`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]   --> src/position/mod.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let src = mv.src();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_src`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dst`
[INFO] [stderr]   --> src/position/mod.rs:93:13
[INFO] [stderr]    |
[INFO] [stderr] 93 |         let dst = mv.dst();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_dst`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `position`
[INFO] [stderr]   --> src/engine/mod.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     position: Position,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `num_threads`
[INFO] [stderr]    --> src/engine/mod.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     num_threads: u32,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `position`
[INFO] [stderr]   --> src/engine/mod.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     position: Position,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `num_threads`
[INFO] [stderr]    --> src/engine/mod.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     num_threads: u32,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.57s
[INFO] running `"docker" "inspect" "fdd9cc11a3bc2323cb414f4099cf6b856a230f395ec4b28299f9fc2b5f155b47"`
[INFO] running `"docker" "rm" "-f" "fdd9cc11a3bc2323cb414f4099cf6b856a230f395ec4b28299f9fc2b5f155b47"`
[INFO] [stdout] fdd9cc11a3bc2323cb414f4099cf6b856a230f395ec4b28299f9fc2b5f155b47