Dec 18 15:34:12.674 INFO checking graph-0.0.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 15:34:12.674 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/graph/0.0.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 15:34:12.976 INFO [stdout] cbd5d8846d4b419958765473e67df44def2bac39284e7da1109db9197795f6f6
Dec 18 15:34:12.978 INFO running `"docker" "start" "-a" "cbd5d8846d4b419958765473e67df44def2bac39284e7da1109db9197795f6f6"`
Dec 18 15:34:14.015 INFO [stderr]     Checking graph v0.0.2 (/opt/crater/workdir)
Dec 18 15:34:14.304 INFO [stderr] warning: struct is never constructed: `Node`
Dec 18 15:34:14.304 INFO [stderr]  --> src/lib.rs:1:1
Dec 18 15:34:14.304 INFO [stderr]   |
Dec 18 15:34:14.304 INFO [stderr] 1 | struct Node;
Dec 18 15:34:14.304 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 15:34:14.304 INFO [stderr]   |
Dec 18 15:34:14.304 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 15:34:14.304 INFO [stderr] 
Dec 18 15:34:14.304 INFO [stderr] warning: struct is never constructed: `Edge`
Dec 18 15:34:14.304 INFO [stderr]  --> src/lib.rs:3:1
Dec 18 15:34:14.304 INFO [stderr]   |
Dec 18 15:34:14.304 INFO [stderr] 3 | struct Edge;
Dec 18 15:34:14.304 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 15:34:14.304 INFO [stderr] 
Dec 18 15:34:14.304 INFO [stderr] warning: struct is never constructed: `Graph`
Dec 18 15:34:14.304 INFO [stderr]  --> src/lib.rs:5:1
Dec 18 15:34:14.304 INFO [stderr]   |
Dec 18 15:34:14.304 INFO [stderr] 5 | struct Graph;
Dec 18 15:34:14.304 INFO [stderr]   | ^^^^^^^^^^^^^
Dec 18 15:34:14.304 INFO [stderr] 
Dec 18 15:34:14.408 INFO [stderr] warning: struct is never constructed: `Node`
Dec 18 15:34:14.408 INFO [stderr]  --> src/lib.rs:1:1
Dec 18 15:34:14.408 INFO [stderr]   |
Dec 18 15:34:14.408 INFO [stderr] 1 | struct Node;
Dec 18 15:34:14.408 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 15:34:14.408 INFO [stderr]   |
Dec 18 15:34:14.408 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 15:34:14.408 INFO [stderr] 
Dec 18 15:34:14.408 INFO [stderr] warning: struct is never constructed: `Edge`
Dec 18 15:34:14.408 INFO [stderr]  --> src/lib.rs:3:1
Dec 18 15:34:14.408 INFO [stderr]   |
Dec 18 15:34:14.408 INFO [stderr] 3 | struct Edge;
Dec 18 15:34:14.408 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 15:34:14.408 INFO [stderr] 
Dec 18 15:34:14.409 INFO [stderr] warning: struct is never constructed: `Graph`
Dec 18 15:34:14.409 INFO [stderr]  --> src/lib.rs:5:1
Dec 18 15:34:14.409 INFO [stderr]   |
Dec 18 15:34:14.409 INFO [stderr] 5 | struct Graph;
Dec 18 15:34:14.409 INFO [stderr]   | ^^^^^^^^^^^^^
Dec 18 15:34:14.409 INFO [stderr] 
Dec 18 15:34:14.432 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Dec 18 15:34:14.902 INFO running `"docker" "inspect" "cbd5d8846d4b419958765473e67df44def2bac39284e7da1109db9197795f6f6"`
Dec 18 15:34:15.042 INFO running `"docker" "rm" "-f" "cbd5d8846d4b419958765473e67df44def2bac39284e7da1109db9197795f6f6"`
Dec 18 15:34:15.241 INFO [stdout] cbd5d8846d4b419958765473e67df44def2bac39284e7da1109db9197795f6f6