Nov 29 23:59:12.082 INFO checking kk1fff/backprop against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 29 23:59:12.082 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-5/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 29 23:59:12.522 INFO [stdout] 21c5159626301abf6733c47d66e586e239272a5756ef43efddeb911f3c00f234
Nov 29 23:59:12.524 INFO running `"docker" "start" "-a" "21c5159626301abf6733c47d66e586e239272a5756ef43efddeb911f3c00f234"`
Nov 29 23:59:13.756 INFO [stderr] usermod: no changes
Nov 29 23:59:13.848 INFO [stderr]     Checking backprop v0.1.0 (/source)
Nov 29 23:59:14.286 INFO [stderr] warning: field is never used: `name`
Nov 29 23:59:14.286 INFO [stderr]   --> src/main.rs:46:5
Nov 29 23:59:14.286 INFO [stderr]    |
Nov 29 23:59:14.286 INFO [stderr] 46 |     name: String,
Nov 29 23:59:14.286 INFO [stderr]    |     ^^^^^^^^^^^^
Nov 29 23:59:14.286 INFO [stderr]    |
Nov 29 23:59:14.286 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 29 23:59:14.286 INFO [stderr] 
Nov 29 23:59:14.286 INFO [stderr] warning: field is never used: `name`
Nov 29 23:59:14.287 INFO [stderr]   --> src/main.rs:93:5
Nov 29 23:59:14.287 INFO [stderr]    |
Nov 29 23:59:14.287 INFO [stderr] 93 |     name: String,
Nov 29 23:59:14.287 INFO [stderr]    |     ^^^^^^^^^^^^
Nov 29 23:59:14.287 INFO [stderr] 
Nov 29 23:59:14.287 INFO [stderr] warning: field is never used: `op_set`
Nov 29 23:59:14.287 INFO [stderr]   --> src/main.rs:94:5
Nov 29 23:59:14.287 INFO [stderr]    |
Nov 29 23:59:14.287 INFO [stderr] 94 |     op_set: HashSet<String>,
Nov 29 23:59:14.287 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 23:59:14.287 INFO [stderr] 
Nov 29 23:59:14.320 INFO [stderr] warning: field is never used: `name`
Nov 29 23:59:14.320 INFO [stderr]   --> src/main.rs:46:5
Nov 29 23:59:14.320 INFO [stderr]    |
Nov 29 23:59:14.320 INFO [stderr] 46 |     name: String,
Nov 29 23:59:14.320 INFO [stderr]    |     ^^^^^^^^^^^^
Nov 29 23:59:14.320 INFO [stderr]    |
Nov 29 23:59:14.320 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 29 23:59:14.320 INFO [stderr] 
Nov 29 23:59:14.320 INFO [stderr] warning: field is never used: `name`
Nov 29 23:59:14.320 INFO [stderr]   --> src/main.rs:93:5
Nov 29 23:59:14.320 INFO [stderr]    |
Nov 29 23:59:14.320 INFO [stderr] 93 |     name: String,
Nov 29 23:59:14.320 INFO [stderr]    |     ^^^^^^^^^^^^
Nov 29 23:59:14.320 INFO [stderr] 
Nov 29 23:59:14.320 INFO [stderr] warning: field is never used: `op_set`
Nov 29 23:59:14.320 INFO [stderr]   --> src/main.rs:94:5
Nov 29 23:59:14.320 INFO [stderr]    |
Nov 29 23:59:14.320 INFO [stderr] 94 |     op_set: HashSet<String>,
Nov 29 23:59:14.320 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 23:59:14.320 INFO [stderr] 
Nov 29 23:59:14.351 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Nov 29 23:59:14.356 INFO [stderr] su: No module specific data is present
Nov 29 23:59:14.781 INFO running `"docker" "inspect" "21c5159626301abf6733c47d66e586e239272a5756ef43efddeb911f3c00f234"`
Nov 29 23:59:14.950 INFO running `"docker" "rm" "-f" "21c5159626301abf6733c47d66e586e239272a5756ef43efddeb911f3c00f234"`
Nov 29 23:59:15.082 INFO [stdout] 21c5159626301abf6733c47d66e586e239272a5756ef43efddeb911f3c00f234