Nov 28 12:51:47.463 INFO checking JoshMcguigan/fizzbuzz-rs against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 12:51:47.465 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-2/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 28 12:51:47.939 INFO [stdout] 4e09dea46c8a8c3f4c9d7470844889ec506369ad044a5c4b36d427b59bb0d4de
Nov 28 12:51:47.949 INFO running `"docker" "start" "-a" "4e09dea46c8a8c3f4c9d7470844889ec506369ad044a5c4b36d427b59bb0d4de"`
Nov 28 12:51:49.471 INFO [stderr] usermod: no changes
Nov 28 12:51:49.524 INFO [stderr]     Checking fizzbuzz-rs v0.1.0 (/source)
Nov 28 12:51:50.584 INFO [stderr] warning: struct is never constructed: `FizzBuzzer`
Nov 28 12:51:50.584 INFO [stderr]  --> src/func.rs:1:1
Nov 28 12:51:50.584 INFO [stderr]   |
Nov 28 12:51:50.584 INFO [stderr] 1 | struct FizzBuzzer<FnFizz, FnBuzz, FnFizzBuzz, FnOther> {
Nov 28 12:51:50.584 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.584 INFO [stderr]   |
Nov 28 12:51:50.584 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 12:51:50.584 INFO [stderr] 
Nov 28 12:51:50.585 INFO [stderr] warning: method is never used: `new`
Nov 28 12:51:50.585 INFO [stderr]   --> src/func.rs:15:5
Nov 28 12:51:50.585 INFO [stderr]    |
Nov 28 12:51:50.585 INFO [stderr] 15 |     fn new(fn_fizz: FnFizz, fn_buzz: FnBuzz, fn_fizzbuzz: FnFizzBuzz, fn_other: FnOther) -> Self {
Nov 28 12:51:50.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.586 INFO [stderr] warning: method is never used: `eval`
Nov 28 12:51:50.586 INFO [stderr]   --> src/func.rs:19:5
Nov 28 12:51:50.586 INFO [stderr]    |
Nov 28 12:51:50.586 INFO [stderr] 19 |     fn eval(&self, num: u32) {
Nov 28 12:51:50.586 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.586 INFO [stderr] warning: function is never used: `fizzbuzz`
Nov 28 12:51:50.586 INFO [stderr]   --> src/flexible.rs:2:1
Nov 28 12:51:50.586 INFO [stderr]    |
Nov 28 12:51:50.586 INFO [stderr] 2  | / fn fizzbuzz<'a, T>(nums: T)
Nov 28 12:51:50.586 INFO [stderr] 3  | |     where T: IntoIterator<Item = &'a u32>
Nov 28 12:51:50.586 INFO [stderr] 4  | | {
Nov 28 12:51:50.586 INFO [stderr] 5  | |     for num in nums {
Nov 28 12:51:50.586 INFO [stderr] ...  |
Nov 28 12:51:50.586 INFO [stderr] 15 | |     }
Nov 28 12:51:50.586 INFO [stderr] 16 | | }
Nov 28 12:51:50.586 INFO [stderr]    | |_^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.586 INFO [stderr] warning: function is never used: `fizzbuzz_vec`
Nov 28 12:51:50.586 INFO [stderr]   --> src/flexible.rs:18:1
Nov 28 12:51:50.586 INFO [stderr]    |
Nov 28 12:51:50.586 INFO [stderr] 18 | fn fizzbuzz_vec(nums: &Vec<u32>) {
Nov 28 12:51:50.586 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.586 INFO [stderr] warning: struct is never constructed: `FizzBuzz`
Nov 28 12:51:50.586 INFO [stderr]  --> src/display.rs:5:1
Nov 28 12:51:50.586 INFO [stderr]   |
Nov 28 12:51:50.586 INFO [stderr] 5 | struct FizzBuzz(usize);
Nov 28 12:51:50.586 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.586 INFO [stderr] warning: struct is never constructed: `FizzBuzzer`
Nov 28 12:51:50.586 INFO [stderr]  --> src/iterator.rs:1:1
Nov 28 12:51:50.586 INFO [stderr]   |
Nov 28 12:51:50.586 INFO [stderr] 1 | struct FizzBuzzer {
Nov 28 12:51:50.586 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.586 INFO [stderr] warning: method is never used: `new`
Nov 28 12:51:50.586 INFO [stderr]  --> src/iterator.rs:7:5
Nov 28 12:51:50.586 INFO [stderr]   |
Nov 28 12:51:50.586 INFO [stderr] 7 |     fn new(starting_value: u32, length: u32) -> Self {
Nov 28 12:51:50.586 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 12:51:50.586 INFO [stderr] 
Nov 28 12:51:50.748 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
Nov 28 12:51:50.750 INFO [stderr] su: No module specific data is present
Nov 28 12:51:51.742 INFO running `"docker" "inspect" "4e09dea46c8a8c3f4c9d7470844889ec506369ad044a5c4b36d427b59bb0d4de"`
Nov 28 12:51:52.177 INFO running `"docker" "rm" "-f" "4e09dea46c8a8c3f4c9d7470844889ec506369ad044a5c4b36d427b59bb0d4de"`
Nov 28 12:51:52.581 INFO [stdout] 4e09dea46c8a8c3f4c9d7470844889ec506369ad044a5c4b36d427b59bb0d4de