Dec 11 15:24:26.696 INFO checking kk1fff/backprop against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 15:24:26.696 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 11 15:24:26.958 INFO [stdout] 16d8cdb63cc167a7df8973c67745d412ca52e58a4ce0ee246cee8533e5177297
Dec 11 15:24:26.962 INFO running `"docker" "start" "-a" "16d8cdb63cc167a7df8973c67745d412ca52e58a4ce0ee246cee8533e5177297"`
Dec 11 15:24:27.612 INFO [stderr] usermod: no changes
Dec 11 15:24:27.652 INFO [stderr]     Checking backprop v0.1.0 (/source)
Dec 11 15:24:28.036 INFO [stderr] warning: field is never used: `name`
Dec 11 15:24:28.036 INFO [stderr]   --> src/main.rs:46:5
Dec 11 15:24:28.036 INFO [stderr]    |
Dec 11 15:24:28.036 INFO [stderr] 46 |     name: String,
Dec 11 15:24:28.036 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 15:24:28.036 INFO [stderr]    |
Dec 11 15:24:28.036 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 15:24:28.036 INFO [stderr] 
Dec 11 15:24:28.036 INFO [stderr] warning: field is never used: `name`
Dec 11 15:24:28.036 INFO [stderr]   --> src/main.rs:93:5
Dec 11 15:24:28.036 INFO [stderr]    |
Dec 11 15:24:28.036 INFO [stderr] 93 |     name: String,
Dec 11 15:24:28.036 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 15:24:28.036 INFO [stderr] 
Dec 11 15:24:28.036 INFO [stderr] warning: field is never used: `op_set`
Dec 11 15:24:28.036 INFO [stderr]   --> src/main.rs:94:5
Dec 11 15:24:28.036 INFO [stderr]    |
Dec 11 15:24:28.037 INFO [stderr] 94 |     op_set: HashSet<String>,
Dec 11 15:24:28.037 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:28.037 INFO [stderr] 
Dec 11 15:24:28.088 INFO [stderr] warning: field is never used: `name`
Dec 11 15:24:28.088 INFO [stderr]   --> src/main.rs:46:5
Dec 11 15:24:28.088 INFO [stderr]    |
Dec 11 15:24:28.088 INFO [stderr] 46 |     name: String,
Dec 11 15:24:28.088 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 15:24:28.088 INFO [stderr]    |
Dec 11 15:24:28.088 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 15:24:28.088 INFO [stderr] 
Dec 11 15:24:28.088 INFO [stderr] warning: field is never used: `name`
Dec 11 15:24:28.088 INFO [stderr]   --> src/main.rs:93:5
Dec 11 15:24:28.088 INFO [stderr]    |
Dec 11 15:24:28.088 INFO [stderr] 93 |     name: String,
Dec 11 15:24:28.088 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 11 15:24:28.088 INFO [stderr] 
Dec 11 15:24:28.088 INFO [stderr] warning: field is never used: `op_set`
Dec 11 15:24:28.088 INFO [stderr]   --> src/main.rs:94:5
Dec 11 15:24:28.088 INFO [stderr]    |
Dec 11 15:24:28.088 INFO [stderr] 94 |     op_set: HashSet<String>,
Dec 11 15:24:28.088 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:24:28.096 INFO [stderr] 
Dec 11 15:24:28.128 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 11 15:24:28.132 INFO [stderr] su: No module specific data is present
Dec 11 15:24:28.705 INFO running `"docker" "inspect" "16d8cdb63cc167a7df8973c67745d412ca52e58a4ce0ee246cee8533e5177297"`
Dec 11 15:24:28.890 INFO running `"docker" "rm" "-f" "16d8cdb63cc167a7df8973c67745d412ca52e58a4ce0ee246cee8533e5177297"`
Dec 11 15:24:29.280 INFO [stdout] 16d8cdb63cc167a7df8973c67745d412ca52e58a4ce0ee246cee8533e5177297