Nov 28 14:06:05.589 INFO checking CollinValley/rust_practice against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 14:06:05.590 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 14:06:06.009 INFO [stdout] d77ac0ee6e8c27df77da1c8d3f06883375b4369307e2538eec3155940bd10b33
Nov 28 14:06:06.014 INFO running `"docker" "start" "-a" "d77ac0ee6e8c27df77da1c8d3f06883375b4369307e2538eec3155940bd10b33"`
Nov 28 14:06:07.776 INFO [stderr] usermod: no changes
Nov 28 14:06:07.848 INFO [stderr]     Checking rust_practice v0.1.0 (/source)
Nov 28 14:06:08.582 INFO [stderr] warning: struct is never constructed: `Extrema`
Nov 28 14:06:08.582 INFO [stderr]    --> src/chapter_9.rs:157:1
Nov 28 14:06:08.583 INFO [stderr]     |
Nov 28 14:06:08.584 INFO [stderr] 157 | struct Extrema<'elt> {
Nov 28 14:06:08.584 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Nov 28 14:06:08.585 INFO [stderr]     |
Nov 28 14:06:08.586 INFO [stderr]     = note: #[warn(dead_code)] on by default
Nov 28 14:06:08.586 INFO [stderr] 
Nov 28 14:06:08.587 INFO [stderr] warning: function is never used: `find_extrema`
Nov 28 14:06:08.587 INFO [stderr]    --> src/chapter_9.rs:162:1
Nov 28 14:06:08.588 INFO [stderr]     |
Nov 28 14:06:08.589 INFO [stderr] 162 | fn find_extrema<'s>(slice: &'s [i32]) -> Extrema<'s> {
Nov 28 14:06:08.589 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:06:08.590 INFO [stderr] 
Nov 28 14:06:08.590 INFO [stderr] warning: function is never used: `say_hello`
Nov 28 14:06:08.591 INFO [stderr]  --> src/chapter_11.rs:6:1
Nov 28 14:06:08.592 INFO [stderr]   |
Nov 28 14:06:08.592 INFO [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
Nov 28 14:06:08.593 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:06:08.593 INFO [stderr] 
Nov 28 14:06:08.594 INFO [stderr] warning: function is never used: `min`
Nov 28 14:06:08.594 INFO [stderr]   --> src/chapter_11.rs:32:1
Nov 28 14:06:08.594 INFO [stderr]    |
Nov 28 14:06:08.594 INFO [stderr] 32 | fn min<T: Ord>(value1: T, value2: T) -> T {
Nov 28 14:06:08.594 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:06:08.595 INFO [stderr] 
Nov 28 14:06:08.595 INFO [stderr] warning: function is never used: `dot`
Nov 28 14:06:08.595 INFO [stderr]    --> src/chapter_11.rs:199:1
Nov 28 14:06:08.595 INFO [stderr]     |
Nov 28 14:06:08.595 INFO [stderr] 199 | / fn dot<N>(v1: &[N], v2: &[N]) -> N
Nov 28 14:06:08.595 INFO [stderr] 200 | |     where N: Add<Output=N> + Mul<Output=N> + Default + Copy
Nov 28 14:06:08.595 INFO [stderr] 201 | | {
Nov 28 14:06:08.595 INFO [stderr] 202 | |     let mut total = N::default(); //All numerical types default will equal 0
Nov 28 14:06:08.595 INFO [stderr] ...   |
Nov 28 14:06:08.595 INFO [stderr] 206 | |     total
Nov 28 14:06:08.595 INFO [stderr] 207 | | }
Nov 28 14:06:08.595 INFO [stderr]     | |_^
Nov 28 14:06:08.600 INFO [stderr] 
Nov 28 14:06:09.091 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Nov 28 14:06:09.100 INFO [stderr] su: No module specific data is present
Nov 28 14:06:10.588 INFO running `"docker" "inspect" "d77ac0ee6e8c27df77da1c8d3f06883375b4369307e2538eec3155940bd10b33"`
Nov 28 14:06:10.924 INFO running `"docker" "rm" "-f" "d77ac0ee6e8c27df77da1c8d3f06883375b4369307e2538eec3155940bd10b33"`
Nov 28 14:06:11.212 INFO [stdout] d77ac0ee6e8c27df77da1c8d3f06883375b4369307e2538eec3155940bd10b33