Dec 12 02:06:51.063 INFO checking JoshMcguigan/fizzbuzz-rs against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 02:06:51.063 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 02:06:51.529 INFO [stdout] fddf2a0363842641ce62560eb2351fb59b05ac19c30750a3e045a023ed6d0deb
Dec 12 02:06:51.531 INFO running `"docker" "start" "-a" "fddf2a0363842641ce62560eb2351fb59b05ac19c30750a3e045a023ed6d0deb"`
Dec 12 02:06:53.637 INFO [stderr] usermod: no changes
Dec 12 02:06:53.716 INFO [stderr]     Checking fizzbuzz-rs v0.1.0 (/source)
Dec 12 02:06:54.692 INFO [stderr] warning: struct is never constructed: `FizzBuzzer`
Dec 12 02:06:54.693 INFO [stderr]  --> src/func.rs:1:1
Dec 12 02:06:54.693 INFO [stderr]   |
Dec 12 02:06:54.693 INFO [stderr] 1 | struct FizzBuzzer<FnFizz, FnBuzz, FnFizzBuzz, FnOther> {
Dec 12 02:06:54.693 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.696 INFO [stderr]   |
Dec 12 02:06:54.696 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 02:06:54.696 INFO [stderr] 
Dec 12 02:06:54.704 INFO [stderr] warning: method is never used: `new`
Dec 12 02:06:54.704 INFO [stderr]   --> src/func.rs:15:5
Dec 12 02:06:54.704 INFO [stderr]    |
Dec 12 02:06:54.704 INFO [stderr] 15 |     fn new(fn_fizz: FnFizz, fn_buzz: FnBuzz, fn_fizzbuzz: FnFizzBuzz, fn_other: FnOther) -> Self {
Dec 12 02:06:54.704 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.704 INFO [stderr] 
Dec 12 02:06:54.704 INFO [stderr] warning: method is never used: `eval`
Dec 12 02:06:54.704 INFO [stderr]   --> src/func.rs:19:5
Dec 12 02:06:54.704 INFO [stderr]    |
Dec 12 02:06:54.704 INFO [stderr] 19 |     fn eval(&self, num: u32) {
Dec 12 02:06:54.704 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.704 INFO [stderr] 
Dec 12 02:06:54.704 INFO [stderr] warning: function is never used: `fizzbuzz`
Dec 12 02:06:54.704 INFO [stderr]   --> src/flexible.rs:2:1
Dec 12 02:06:54.704 INFO [stderr]    |
Dec 12 02:06:54.704 INFO [stderr] 2  | / fn fizzbuzz<'a, T>(nums: T)
Dec 12 02:06:54.704 INFO [stderr] 3  | |     where T: IntoIterator<Item = &'a u32>
Dec 12 02:06:54.704 INFO [stderr] 4  | | {
Dec 12 02:06:54.704 INFO [stderr] 5  | |     for num in nums {
Dec 12 02:06:54.704 INFO [stderr] ...  |
Dec 12 02:06:54.704 INFO [stderr] 15 | |     }
Dec 12 02:06:54.704 INFO [stderr] 16 | | }
Dec 12 02:06:54.704 INFO [stderr]    | |_^
Dec 12 02:06:54.704 INFO [stderr] 
Dec 12 02:06:54.704 INFO [stderr] warning: function is never used: `fizzbuzz_vec`
Dec 12 02:06:54.704 INFO [stderr]   --> src/flexible.rs:18:1
Dec 12 02:06:54.704 INFO [stderr]    |
Dec 12 02:06:54.704 INFO [stderr] 18 | fn fizzbuzz_vec(nums: &Vec<u32>) {
Dec 12 02:06:54.704 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.704 INFO [stderr] 
Dec 12 02:06:54.704 INFO [stderr] warning: struct is never constructed: `FizzBuzz`
Dec 12 02:06:54.704 INFO [stderr]  --> src/display.rs:5:1
Dec 12 02:06:54.704 INFO [stderr]   |
Dec 12 02:06:54.704 INFO [stderr] 5 | struct FizzBuzz(usize);
Dec 12 02:06:54.708 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.708 INFO [stderr] 
Dec 12 02:06:54.708 INFO [stderr] warning: struct is never constructed: `FizzBuzzer`
Dec 12 02:06:54.708 INFO [stderr]  --> src/iterator.rs:1:1
Dec 12 02:06:54.708 INFO [stderr]   |
Dec 12 02:06:54.708 INFO [stderr] 1 | struct FizzBuzzer {
Dec 12 02:06:54.708 INFO [stderr]   | ^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.708 INFO [stderr] 
Dec 12 02:06:54.708 INFO [stderr] warning: method is never used: `new`
Dec 12 02:06:54.708 INFO [stderr]  --> src/iterator.rs:7:5
Dec 12 02:06:54.708 INFO [stderr]   |
Dec 12 02:06:54.708 INFO [stderr] 7 |     fn new(starting_value: u32, length: u32) -> Self {
Dec 12 02:06:54.708 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:06:54.708 INFO [stderr] 
Dec 12 02:06:54.737 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
Dec 12 02:06:54.744 INFO [stderr] su: No module specific data is present
Dec 12 02:06:56.132 INFO running `"docker" "inspect" "fddf2a0363842641ce62560eb2351fb59b05ac19c30750a3e045a023ed6d0deb"`
Dec 12 02:06:56.374 INFO running `"docker" "rm" "-f" "fddf2a0363842641ce62560eb2351fb59b05ac19c30750a3e045a023ed6d0deb"`
Dec 12 02:06:56.704 INFO [stdout] fddf2a0363842641ce62560eb2351fb59b05ac19c30750a3e045a023ed6d0deb