[INFO] cloning repository JoshMcguigan/fizzbuzz-rs
[INFO] running `"git" "clone" "--bare" "git://github.com/JoshMcguigan/fizzbuzz-rs.git" "work/cache/sources/gh/JoshMcguigan/fizzbuzz-rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/JoshMcguigan/fizzbuzz-rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/JoshMcguigan/fizzbuzz-rs" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/JoshMcguigan/fizzbuzz-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/JoshMcguigan/fizzbuzz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JoshMcguigan/fizzbuzz-rs" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JoshMcguigan/fizzbuzz-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JoshMcguigan/fizzbuzz-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a112853d70f515e16e9b21a148d1941b16e46bdb
[INFO] sha for GitHub repo JoshMcguigan/fizzbuzz-rs: a112853d70f515e16e9b21a148d1941b16e46bdb
[INFO] validating manifest of JoshMcguigan/fizzbuzz-rs on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of JoshMcguigan/fizzbuzz-rs on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing JoshMcguigan/fizzbuzz-rs
[INFO] finished frobbing JoshMcguigan/fizzbuzz-rs
[INFO] frobbed toml for JoshMcguigan/fizzbuzz-rs written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/JoshMcguigan/fizzbuzz-rs/Cargo.toml
[INFO] started frobbing JoshMcguigan/fizzbuzz-rs
[INFO] finished frobbing JoshMcguigan/fizzbuzz-rs
[INFO] frobbed toml for JoshMcguigan/fizzbuzz-rs written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JoshMcguigan/fizzbuzz-rs/Cargo.toml
[INFO] crate JoshMcguigan/fizzbuzz-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking JoshMcguigan/fizzbuzz-rs against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-4/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/JoshMcguigan/fizzbuzz-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5d9081d32197caee05edc0f540c0af60ccc0a9d19f8fe133acdca53edb645377
[INFO] running `"docker" "start" "-a" "5d9081d32197caee05edc0f540c0af60ccc0a9d19f8fe133acdca53edb645377"`
[INFO] [stderr]     Checking fizzbuzz-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `FizzBuzzer`
[INFO] [stderr]  --> src/func.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct FizzBuzzer<FnFizz, FnBuzz, FnFizzBuzz, FnOther> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/func.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn new(fn_fizz: FnFizz, fn_buzz: FnBuzz, fn_fizzbuzz: FnFizzBuzz, fn_other: FnOther) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eval`
[INFO] [stderr]   --> src/func.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn eval(&self, num: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fizzbuzz`
[INFO] [stderr]   --> src/flexible.rs:2:1
[INFO] [stderr]    |
[INFO] [stderr] 2  | / fn fizzbuzz<'a, T>(nums: T)
[INFO] [stderr] 3  | |     where T: IntoIterator<Item = &'a u32>
[INFO] [stderr] 4  | | {
[INFO] [stderr] 5  | |     for num in nums {
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fizzbuzz_vec`
[INFO] [stderr]   --> src/flexible.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn fizzbuzz_vec(nums: &Vec<u32>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FizzBuzz`
[INFO] [stderr]  --> src/display.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct FizzBuzz(usize);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FizzBuzzer`
[INFO] [stderr]  --> src/iterator.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct FizzBuzzer {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/iterator.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn new(starting_value: u32, length: u32) -> Self {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "5d9081d32197caee05edc0f540c0af60ccc0a9d19f8fe133acdca53edb645377"`
[INFO] running `"docker" "rm" "-f" "5d9081d32197caee05edc0f540c0af60ccc0a9d19f8fe133acdca53edb645377"`
[INFO] [stdout] 5d9081d32197caee05edc0f540c0af60ccc0a9d19f8fe133acdca53edb645377