Dec 18 07:02:27.953 INFO checking JoshMcguigan/fizzbuzz-rs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 07:02:27.953 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/JoshMcguigan/fizzbuzz-rs:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 07:02:28.280 INFO [stdout] e4f5c86781313519c5cbd28b867bdb2c2179f3e99f858966dac548936b20e5e3
Dec 18 07:02:28.288 INFO running `"docker" "start" "-a" "e4f5c86781313519c5cbd28b867bdb2c2179f3e99f858966dac548936b20e5e3"`
Dec 18 07:02:29.241 INFO [stderr]     Checking fizzbuzz-rs v0.1.0 (/opt/crater/workdir)
Dec 18 07:02:29.628 INFO [stderr] warning: struct is never constructed: `FizzBuzzer`
Dec 18 07:02:29.628 INFO [stderr]  --> src/func.rs:1:1
Dec 18 07:02:29.628 INFO [stderr]   |
Dec 18 07:02:29.628 INFO [stderr] 1 | struct FizzBuzzer<FnFizz, FnBuzz, FnFizzBuzz, FnOther> {
Dec 18 07:02:29.628 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.628 INFO [stderr]   |
Dec 18 07:02:29.628 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 07:02:29.628 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: method is never used: `new`
Dec 18 07:02:29.629 INFO [stderr]   --> src/func.rs:15:5
Dec 18 07:02:29.629 INFO [stderr]    |
Dec 18 07:02:29.629 INFO [stderr] 15 |     fn new(fn_fizz: FnFizz, fn_buzz: FnBuzz, fn_fizzbuzz: FnFizzBuzz, fn_other: FnOther) -> Self {
Dec 18 07:02:29.629 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: method is never used: `eval`
Dec 18 07:02:29.629 INFO [stderr]   --> src/func.rs:19:5
Dec 18 07:02:29.629 INFO [stderr]    |
Dec 18 07:02:29.629 INFO [stderr] 19 |     fn eval(&self, num: u32) {
Dec 18 07:02:29.629 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: function is never used: `fizzbuzz`
Dec 18 07:02:29.629 INFO [stderr]   --> src/flexible.rs:2:1
Dec 18 07:02:29.629 INFO [stderr]    |
Dec 18 07:02:29.629 INFO [stderr] 2  | / fn fizzbuzz<'a, T>(nums: T)
Dec 18 07:02:29.629 INFO [stderr] 3  | |     where T: IntoIterator<Item = &'a u32>
Dec 18 07:02:29.629 INFO [stderr] 4  | | {
Dec 18 07:02:29.629 INFO [stderr] 5  | |     for num in nums {
Dec 18 07:02:29.629 INFO [stderr] ...  |
Dec 18 07:02:29.629 INFO [stderr] 15 | |     }
Dec 18 07:02:29.629 INFO [stderr] 16 | | }
Dec 18 07:02:29.629 INFO [stderr]    | |_^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: function is never used: `fizzbuzz_vec`
Dec 18 07:02:29.629 INFO [stderr]   --> src/flexible.rs:18:1
Dec 18 07:02:29.629 INFO [stderr]    |
Dec 18 07:02:29.629 INFO [stderr] 18 | fn fizzbuzz_vec(nums: &Vec<u32>) {
Dec 18 07:02:29.629 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: struct is never constructed: `FizzBuzz`
Dec 18 07:02:29.629 INFO [stderr]  --> src/display.rs:5:1
Dec 18 07:02:29.629 INFO [stderr]   |
Dec 18 07:02:29.629 INFO [stderr] 5 | struct FizzBuzz(usize);
Dec 18 07:02:29.629 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: struct is never constructed: `FizzBuzzer`
Dec 18 07:02:29.629 INFO [stderr]  --> src/iterator.rs:1:1
Dec 18 07:02:29.629 INFO [stderr]   |
Dec 18 07:02:29.629 INFO [stderr] 1 | struct FizzBuzzer {
Dec 18 07:02:29.629 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.629 INFO [stderr] warning: method is never used: `new`
Dec 18 07:02:29.629 INFO [stderr]  --> src/iterator.rs:7:5
Dec 18 07:02:29.629 INFO [stderr]   |
Dec 18 07:02:29.629 INFO [stderr] 7 |     fn new(starting_value: u32, length: u32) -> Self {
Dec 18 07:02:29.629 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:02:29.629 INFO [stderr] 
Dec 18 07:02:29.765 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Dec 18 07:02:30.623 INFO running `"docker" "inspect" "e4f5c86781313519c5cbd28b867bdb2c2179f3e99f858966dac548936b20e5e3"`
Dec 18 07:02:30.842 INFO running `"docker" "rm" "-f" "e4f5c86781313519c5cbd28b867bdb2c2179f3e99f858966dac548936b20e5e3"`
Dec 18 07:02:31.024 INFO [stdout] e4f5c86781313519c5cbd28b867bdb2c2179f3e99f858966dac548936b20e5e3