Dec 12 03:22:24.059 INFO checking CollinValley/rust_practice against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:22:24.059 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 03:22:24.492 INFO [stdout] 0e65b03b815bc08a856c9f31c1e93ebd363d00850df5d1fa1971c3823649a999
Dec 12 03:22:24.494 INFO running `"docker" "start" "-a" "0e65b03b815bc08a856c9f31c1e93ebd363d00850df5d1fa1971c3823649a999"`
Dec 12 03:22:25.871 INFO [stderr] usermod: no changes
Dec 12 03:22:25.980 INFO [stderr]     Checking rust_practice v0.1.0 (/source)
Dec 12 03:22:27.040 INFO [stderr] warning: struct is never constructed: `Extrema`
Dec 12 03:22:27.040 INFO [stderr]    --> src/chapter_9.rs:157:1
Dec 12 03:22:27.040 INFO [stderr]     |
Dec 12 03:22:27.040 INFO [stderr] 157 | struct Extrema<'elt> {
Dec 12 03:22:27.040 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 12 03:22:27.040 INFO [stderr]     |
Dec 12 03:22:27.040 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 12 03:22:27.041 INFO [stderr] 
Dec 12 03:22:27.041 INFO [stderr] warning: function is never used: `find_extrema`
Dec 12 03:22:27.041 INFO [stderr]    --> src/chapter_9.rs:162:1
Dec 12 03:22:27.041 INFO [stderr]     |
Dec 12 03:22:27.041 INFO [stderr] 162 | fn find_extrema<'s>(slice: &'s [i32]) -> Extrema<'s> {
Dec 12 03:22:27.041 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:22:27.041 INFO [stderr] 
Dec 12 03:22:27.041 INFO [stderr] warning: function is never used: `say_hello`
Dec 12 03:22:27.041 INFO [stderr]  --> src/chapter_11.rs:6:1
Dec 12 03:22:27.041 INFO [stderr]   |
Dec 12 03:22:27.041 INFO [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
Dec 12 03:22:27.041 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:22:27.041 INFO [stderr] 
Dec 12 03:22:27.041 INFO [stderr] warning: function is never used: `min`
Dec 12 03:22:27.041 INFO [stderr]   --> src/chapter_11.rs:32:1
Dec 12 03:22:27.041 INFO [stderr]    |
Dec 12 03:22:27.041 INFO [stderr] 32 | fn min<T: Ord>(value1: T, value2: T) -> T {
Dec 12 03:22:27.041 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 03:22:27.041 INFO [stderr] 
Dec 12 03:22:27.041 INFO [stderr] warning: function is never used: `dot`
Dec 12 03:22:27.041 INFO [stderr]    --> src/chapter_11.rs:199:1
Dec 12 03:22:27.041 INFO [stderr]     |
Dec 12 03:22:27.041 INFO [stderr] 199 | / fn dot<N>(v1: &[N], v2: &[N]) -> N
Dec 12 03:22:27.041 INFO [stderr] 200 | |     where N: Add<Output=N> + Mul<Output=N> + Default + Copy
Dec 12 03:22:27.041 INFO [stderr] 201 | | {
Dec 12 03:22:27.041 INFO [stderr] 202 | |     let mut total = N::default(); //All numerical types default will equal 0
Dec 12 03:22:27.041 INFO [stderr] ...   |
Dec 12 03:22:27.041 INFO [stderr] 206 | |     total
Dec 12 03:22:27.041 INFO [stderr] 207 | | }
Dec 12 03:22:27.041 INFO [stderr]     | |_^
Dec 12 03:22:27.041 INFO [stderr] 
Dec 12 03:22:27.418 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
Dec 12 03:22:27.420 INFO [stderr] su: No module specific data is present
Dec 12 03:22:28.824 INFO running `"docker" "inspect" "0e65b03b815bc08a856c9f31c1e93ebd363d00850df5d1fa1971c3823649a999"`
Dec 12 03:22:29.170 INFO running `"docker" "rm" "-f" "0e65b03b815bc08a856c9f31c1e93ebd363d00850df5d1fa1971c3823649a999"`
Dec 12 03:22:29.444 INFO [stdout] 0e65b03b815bc08a856c9f31c1e93ebd363d00850df5d1fa1971c3823649a999