Dec 18 08:06:32.913 INFO checking CollinValley/rust_practice against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 08:06:32.914 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/CollinValley/rust_practice:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:06:33.377 INFO [stdout] 6f4a192e2d6d30d72427394d62deb62e0dc9af005a93396d92a01691cd2bfff4
Dec 18 08:06:33.379 INFO running `"docker" "start" "-a" "6f4a192e2d6d30d72427394d62deb62e0dc9af005a93396d92a01691cd2bfff4"`
Dec 18 08:06:35.105 INFO [stderr]     Checking num-integer v0.1.39
Dec 18 08:06:35.116 INFO [stderr]     Checking num-complex v0.2.1
Dec 18 08:06:35.988 INFO [stderr]     Checking num-bigint v0.2.1
Dec 18 08:06:35.988 INFO [stderr]     Checking num-iter v0.1.37
Dec 18 08:06:38.055 INFO [stderr]     Checking num-rational v0.2.1
Dec 18 08:06:38.879 INFO [stderr]     Checking num v0.2.0
Dec 18 08:06:39.132 INFO [stderr]     Checking rust_practice v0.1.0 (/opt/crater/workdir)
Dec 18 08:06:39.681 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
Dec 18 08:06:39.681 INFO [stderr]   --> src/chapter_10.rs:84:23
Dec 18 08:06:39.681 INFO [stderr]    |
Dec 18 08:06:39.681 INFO [stderr] 84 |         self.plural().trim_right_matches('s')
Dec 18 08:06:39.681 INFO [stderr]    |                       ^^^^^^^^^^^^^^^^^^
Dec 18 08:06:39.681 INFO [stderr]    |
Dec 18 08:06:39.681 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 08:06:39.681 INFO [stderr] 
Dec 18 08:06:39.803 INFO [stderr] warning: struct is never constructed: `Extrema`
Dec 18 08:06:39.803 INFO [stderr]    --> src/chapter_9.rs:157:1
Dec 18 08:06:39.804 INFO [stderr]     |
Dec 18 08:06:39.804 INFO [stderr] 157 | struct Extrema<'elt> {
Dec 18 08:06:39.804 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:39.804 INFO [stderr]     |
Dec 18 08:06:39.805 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 08:06:39.805 INFO [stderr] 
Dec 18 08:06:39.805 INFO [stderr] warning: function is never used: `find_extrema`
Dec 18 08:06:39.805 INFO [stderr]    --> src/chapter_9.rs:162:1
Dec 18 08:06:39.805 INFO [stderr]     |
Dec 18 08:06:39.806 INFO [stderr] 162 | fn find_extrema<'s>(slice: &'s [i32]) -> Extrema<'s> {
Dec 18 08:06:39.806 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:39.806 INFO [stderr] 
Dec 18 08:06:39.807 INFO [stderr] warning: function is never used: `say_hello`
Dec 18 08:06:39.807 INFO [stderr]  --> src/chapter_11.rs:6:1
Dec 18 08:06:39.807 INFO [stderr]   |
Dec 18 08:06:39.807 INFO [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
Dec 18 08:06:39.808 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:39.808 INFO [stderr] 
Dec 18 08:06:39.808 INFO [stderr] warning: function is never used: `min`
Dec 18 08:06:39.808 INFO [stderr]   --> src/chapter_11.rs:32:1
Dec 18 08:06:39.809 INFO [stderr]    |
Dec 18 08:06:39.809 INFO [stderr] 32 | fn min<T: Ord>(value1: T, value2: T) -> T {
Dec 18 08:06:39.809 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:06:39.809 INFO [stderr] 
Dec 18 08:06:39.810 INFO [stderr] warning: function is never used: `dot`
Dec 18 08:06:39.810 INFO [stderr]    --> src/chapter_11.rs:199:1
Dec 18 08:06:39.810 INFO [stderr]     |
Dec 18 08:06:39.810 INFO [stderr] 199 | / fn dot<N>(v1: &[N], v2: &[N]) -> N
Dec 18 08:06:39.811 INFO [stderr] 200 | |     where N: Add<Output=N> + Mul<Output=N> + Default + Copy
Dec 18 08:06:39.811 INFO [stderr] 201 | | {
Dec 18 08:06:39.811 INFO [stderr] 202 | |     let mut total = N::default(); //All numerical types default will equal 0
Dec 18 08:06:39.811 INFO [stderr] ...   |
Dec 18 08:06:39.812 INFO [stderr] 206 | |     total
Dec 18 08:06:39.812 INFO [stderr] 207 | | }
Dec 18 08:06:39.812 INFO [stderr]     | |_^
Dec 18 08:06:39.812 INFO [stderr] 
Dec 18 08:06:39.916 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
Dec 18 08:06:39.917 INFO [stderr]   --> src/chapter_10.rs:84:23
Dec 18 08:06:39.917 INFO [stderr]    |
Dec 18 08:06:39.917 INFO [stderr] 84 |         self.plural().trim_right_matches('s')
Dec 18 08:06:39.917 INFO [stderr]    |                       ^^^^^^^^^^^^^^^^^^
Dec 18 08:06:39.918 INFO [stderr]    |
Dec 18 08:06:39.918 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 08:06:39.918 INFO [stderr] 
Dec 18 08:06:40.221 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.20s
Dec 18 08:06:41.129 INFO running `"docker" "inspect" "6f4a192e2d6d30d72427394d62deb62e0dc9af005a93396d92a01691cd2bfff4"`
Dec 18 08:06:41.374 INFO running `"docker" "rm" "-f" "6f4a192e2d6d30d72427394d62deb62e0dc9af005a93396d92a01691cd2bfff4"`
Dec 18 08:06:41.634 INFO [stdout] 6f4a192e2d6d30d72427394d62deb62e0dc9af005a93396d92a01691cd2bfff4