Dec 17 19:37:42.012 INFO checking mike706574/rust-json-file-deserialization-example against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:37:42.012 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mike706574/rust-json-file-deserialization-example:/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 17 19:37:42.390 INFO [stdout] c0f1a5b1def5f11afbb621d1d6a0f3ecca013ce242807ad7fef017a8caba03d5
Dec 17 19:37:42.394 INFO running `"docker" "start" "-a" "c0f1a5b1def5f11afbb621d1d6a0f3ecca013ce242807ad7fef017a8caba03d5"`
Dec 17 19:37:44.000 INFO [stderr]     Checking serde_json v1.0.2
Dec 17 19:37:44.022 INFO [stderr]    Compiling serde_derive v1.0.10
Dec 17 19:37:51.403 INFO [stderr]     Checking foo v0.1.0 (/opt/crater/workdir)
Dec 17 19:37:51.944 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:51.944 INFO [stderr]   --> src/main.rs:26:5
Dec 17 19:37:51.944 INFO [stderr]    |
Dec 17 19:37:51.944 INFO [stderr] 26 |     example();
Dec 17 19:37:51.944 INFO [stderr]    |     ^^^^^^^^^^
Dec 17 19:37:51.944 INFO [stderr]    |
Dec 17 19:37:51.944 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:37:51.944 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:51.944 INFO [stderr] 
Dec 17 19:37:51.980 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:51.980 INFO [stderr]   --> src/main.rs:26:5
Dec 17 19:37:51.980 INFO [stderr]    |
Dec 17 19:37:51.980 INFO [stderr] 26 |     example();
Dec 17 19:37:51.980 INFO [stderr]    |     ^^^^^^^^^^
Dec 17 19:37:51.980 INFO [stderr]    |
Dec 17 19:37:51.980 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:37:51.980 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:51.980 INFO [stderr] 
Dec 17 19:37:52.019 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.06s
Dec 17 19:37:53.016 INFO running `"docker" "inspect" "c0f1a5b1def5f11afbb621d1d6a0f3ecca013ce242807ad7fef017a8caba03d5"`
Dec 17 19:37:53.362 INFO running `"docker" "rm" "-f" "c0f1a5b1def5f11afbb621d1d6a0f3ecca013ce242807ad7fef017a8caba03d5"`
Dec 17 19:37:53.742 INFO [stdout] c0f1a5b1def5f11afbb621d1d6a0f3ecca013ce242807ad7fef017a8caba03d5