Dec 12 13:11:42.097 INFO checking hrm_interpreter-0.2.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 13:11:42.097 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 13:11:42.596 INFO [stdout] 9622c663e26ba8782469b93e3db358627f04ba3701c157e799e34e6da934c9bb
Dec 12 13:11:42.602 INFO running `"docker" "start" "-a" "9622c663e26ba8782469b93e3db358627f04ba3701c157e799e34e6da934c9bb"`
Dec 12 13:11:44.084 INFO [stderr] usermod: no changes
Dec 12 13:11:44.216 INFO [stderr]     Checking hrm_interpreter v0.2.0 (/source)
Dec 12 13:11:45.848 INFO [stderr] warning: method is never used: `new`
Dec 12 13:11:45.848 INFO [stderr]   --> src/json.rs:43:5
Dec 12 13:11:45.848 INFO [stderr]    |
Dec 12 13:11:45.848 INFO [stderr] 43 |     fn new(operation: String, operand: Option<JsonOperand>) -> Self {
Dec 12 13:11:45.848 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:11:45.848 INFO [stderr]    |
Dec 12 13:11:45.848 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 13:11:45.848 INFO [stderr] 
Dec 12 13:11:45.848 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:11:45.848 INFO [stderr]    --> src/json.rs:240:9
Dec 12 13:11:45.848 INFO [stderr]     |
Dec 12 13:11:45.848 INFO [stderr] 240 |         file.write(raw_state.as_bytes());
Dec 12 13:11:45.848 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:11:45.848 INFO [stderr]     |
Dec 12 13:11:45.848 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 13:11:45.848 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:11:45.848 INFO [stderr] 
Dec 12 13:11:45.848 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:11:45.848 INFO [stderr]    --> src/json.rs:242:9
Dec 12 13:11:45.848 INFO [stderr]     |
Dec 12 13:11:45.848 INFO [stderr] 242 |         file.write(b"\n");
Dec 12 13:11:45.848 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Dec 12 13:11:45.848 INFO [stderr]     |
Dec 12 13:11:45.848 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:11:45.848 INFO [stderr] 
Dec 12 13:11:46.084 INFO [stderr] warning: unused variable: `operation`
Dec 12 13:11:46.084 INFO [stderr]    --> src/operators/add.rs:257:7
Dec 12 13:11:46.084 INFO [stderr]     |
Dec 12 13:11:46.084 INFO [stderr] 257 |         let operation = AddOp{cell: Location::Cell(0)};
Dec 12 13:11:46.084 INFO [stderr]     |             ^^^^^^^^^ help: consider using `_operation` instead
Dec 12 13:11:46.084 INFO [stderr]     |
Dec 12 13:11:46.084 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 12 13:11:46.084 INFO [stderr] 
Dec 12 13:11:46.272 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:11:46.272 INFO [stderr]    --> src/json.rs:240:9
Dec 12 13:11:46.272 INFO [stderr]     |
Dec 12 13:11:46.272 INFO [stderr] 240 |         file.write(raw_state.as_bytes());
Dec 12 13:11:46.272 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 13:11:46.272 INFO [stderr]     |
Dec 12 13:11:46.272 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 12 13:11:46.272 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:11:46.272 INFO [stderr] 
Dec 12 13:11:46.272 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 13:11:46.272 INFO [stderr]    --> src/json.rs:242:9
Dec 12 13:11:46.272 INFO [stderr]     |
Dec 12 13:11:46.272 INFO [stderr] 242 |         file.write(b"\n");
Dec 12 13:11:46.272 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^
Dec 12 13:11:46.272 INFO [stderr]     |
Dec 12 13:11:46.273 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 13:11:46.273 INFO [stderr] 
Dec 12 13:11:49.648 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.54s
Dec 12 13:11:49.649 INFO [stderr] su: No module specific data is present
Dec 12 13:11:49.907 INFO running `"docker" "inspect" "9622c663e26ba8782469b93e3db358627f04ba3701c157e799e34e6da934c9bb"`
Dec 12 13:11:49.971 INFO running `"docker" "rm" "-f" "9622c663e26ba8782469b93e3db358627f04ba3701c157e799e34e6da934c9bb"`
Dec 12 13:11:50.166 INFO [stdout] 9622c663e26ba8782469b93e3db358627f04ba3701c157e799e34e6da934c9bb