Dec 19 15:09:17.225 INFO checking jit-y/diff_json against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:09:17.225 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/jit-y/diff_json:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:09:17.851 INFO [stdout] a45c6669f43f798028327ca270262940800b9644041918f46f8a8253a18d3a4e
Dec 19 15:09:17.853 INFO running `"docker" "start" "-a" "a45c6669f43f798028327ca270262940800b9644041918f46f8a8253a18d3a4e"`
Dec 19 15:09:20.496 INFO [stderr]     Checking diff_json v0.1.0 (/opt/crater/workdir)
Dec 19 15:09:20.860 INFO [stderr] warning: struct is never constructed: `JSONPrettier`
Dec 19 15:09:20.860 INFO [stderr]  --> src/prettier.rs:4:1
Dec 19 15:09:20.860 INFO [stderr]   |
Dec 19 15:09:20.860 INFO [stderr] 4 | struct JSONPrettier {
Dec 19 15:09:20.860 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 19 15:09:20.860 INFO [stderr]   |
Dec 19 15:09:20.860 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 15:09:20.860 INFO [stderr] 
Dec 19 15:09:20.860 INFO [stderr] warning: method is never used: `to_pretty`
Dec 19 15:09:20.860 INFO [stderr]  --> src/prettier.rs:9:5
Dec 19 15:09:20.860 INFO [stderr]   |
Dec 19 15:09:20.860 INFO [stderr] 9 |     pub fn to_pretty() {
Dec 19 15:09:20.860 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 15:09:20.860 INFO [stderr] 
Dec 19 15:09:21.064 INFO [stderr] warning: struct is never constructed: `JSONPrettier`
Dec 19 15:09:21.064 INFO [stderr]  --> src/prettier.rs:4:1
Dec 19 15:09:21.064 INFO [stderr]   |
Dec 19 15:09:21.064 INFO [stderr] 4 | struct JSONPrettier {
Dec 19 15:09:21.064 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^
Dec 19 15:09:21.064 INFO [stderr]   |
Dec 19 15:09:21.064 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 15:09:21.064 INFO [stderr] 
Dec 19 15:09:21.064 INFO [stderr] warning: method is never used: `to_pretty`
Dec 19 15:09:21.064 INFO [stderr]  --> src/prettier.rs:9:5
Dec 19 15:09:21.064 INFO [stderr]   |
Dec 19 15:09:21.064 INFO [stderr] 9 |     pub fn to_pretty() {
Dec 19 15:09:21.064 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 15:09:21.064 INFO [stderr] 
Dec 19 15:09:21.532 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
Dec 19 15:09:22.586 INFO running `"docker" "inspect" "a45c6669f43f798028327ca270262940800b9644041918f46f8a8253a18d3a4e"`
Dec 19 15:09:22.952 INFO running `"docker" "rm" "-f" "a45c6669f43f798028327ca270262940800b9644041918f46f8a8253a18d3a4e"`
Dec 19 15:09:23.284 INFO [stdout] a45c6669f43f798028327ca270262940800b9644041918f46f8a8253a18d3a4e