[INFO] cloning repository https://github.com/henry0715-dev/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/henry0715-dev/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenry0715-dev%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenry0715-dev%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19e4855e6a5af7172e7fea008a378db4c735d564
[INFO] building henry0715-dev/playground against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhenry0715-dev%2Fplayground" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/henry0715-dev/playground on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/henry0715-dev/playground
[INFO] finished tweaking git repo https://github.com/henry0715-dev/playground
[INFO] tweaked toml for git repo https://github.com/henry0715-dev/playground written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/henry0715-dev/playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c43de7d25898fd6b092f384cd5207deed9fc3e7aacd370efa606e838f03d0485
[INFO] running `Command { std: "docker" "start" "-a" "c43de7d25898fd6b092f384cd5207deed9fc3e7aacd370efa606e838f03d0485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c43de7d25898fd6b092f384cd5207deed9fc3e7aacd370efa606e838f03d0485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c43de7d25898fd6b092f384cd5207deed9fc3e7aacd370efa606e838f03d0485", kill_on_drop: false }`
[INFO] [stdout] c43de7d25898fd6b092f384cd5207deed9fc3e7aacd370efa606e838f03d0485
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c0332dac719e41af6f585806a931416af654499be15245d272ef9c3575e98e4
[INFO] running `Command { std: "docker" "start" "-a" "3c0332dac719e41af6f585806a931416af654499be15245d272ef9c3575e98e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling zerocopy v0.8.0-alpha.6
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.9.0-alpha.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0-alpha.1
[INFO] [stderr]    Compiling rand v0.9.0-alpha.1
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/example1/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area` and `can_hold` are never used
[INFO] [stdout]   --> src/example1/mod.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Rectangle {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 9  |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]   --> src/example1/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn test1() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SpreadsheetCell` is never used
[INFO] [stdout]  --> src/example2/mod.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum SpreadsheetCell {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]  --> src/example2/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn test2() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_1` is never used
[INFO] [stdout]  --> src/example3/ex3.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test3_1() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_2` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test3_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_3` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn test3_3() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_4` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn test3_4() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_5` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn test3_5() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_number` is never used
[INFO] [stdout]  --> src/example4/ex4.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn largest_number(number_list: &[i32]) -> &i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]   --> src/example4/ex4.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn largest<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test4_1` is never used
[INFO] [stdout]   --> src/example4/ex4.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn test4_1() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test4_2` is never used
[INFO] [stdout]   --> src/example4/ex4.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn test4_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/example4/ex4_struct.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point<T, U> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mixup` is never used
[INFO] [stdout]  --> src/example4/ex4_struct.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<X1, Y1> Point<X1, Y1> {
[INFO] [stdout]   | -------------------------- method in this implementation
[INFO] [stdout] 9 |     fn mixup<X2, Y2>(self, other: Point<X2, Y2>) -> Point<X1, Y2> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_struct` is never used
[INFO] [stdout]   --> src/example4/ex4_struct.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn test_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_mixup` is never used
[INFO] [stdout]   --> src/example4/ex4_struct.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn test_mixup() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]  --> src/example5/ex5.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Summary {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticle` is never constructed
[INFO] [stdout]  --> src/example5/ex5.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct NewsArticle {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tweet` is never constructed
[INFO] [stdout]   --> src/example5/ex5.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Tweet {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test5_1` is never used
[INFO] [stdout]   --> src/example5/ex5.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn test5_1() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `SummaryTitle` is never used
[INFO] [stdout]  --> src/example5/ex5_2.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait SummaryTitle {
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticleTitle` is never constructed
[INFO] [stdout]  --> src/example5/ex5_2.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct NewsArticleTitle {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TweetTitle` is never constructed
[INFO] [stdout]   --> src/example5/ex5_2.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct TweetTitle {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn notify(item: &impl SummaryTitle) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarize` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn returns_summarize() -> impl SummaryTitle {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_2` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn test_2() {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_3` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn test_3() {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.25s
[INFO] running `Command { std: "docker" "inspect" "3c0332dac719e41af6f585806a931416af654499be15245d272ef9c3575e98e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c0332dac719e41af6f585806a931416af654499be15245d272ef9c3575e98e4", kill_on_drop: false }`
[INFO] [stdout] 3c0332dac719e41af6f585806a931416af654499be15245d272ef9c3575e98e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae2af4d807c008d8b1b4ff285351ca485b1f02d5daca6c937c804930137252b6
[INFO] running `Command { std: "docker" "start" "-a" "ae2af4d807c008d8b1b4ff285351ca485b1f02d5daca6c937c804930137252b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/example1/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `area` and `can_hold` are never used
[INFO] [stdout]   --> src/example1/mod.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Rectangle {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 9  |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn can_hold(&self, other: &Rectangle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test1` is never used
[INFO] [stdout]   --> src/example1/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn test1() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SpreadsheetCell` is never used
[INFO] [stdout]  --> src/example2/mod.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum SpreadsheetCell {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test2` is never used
[INFO] [stdout]  --> src/example2/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn test2() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_1` is never used
[INFO] [stdout]  --> src/example3/ex3.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test3_1() {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_2` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn test3_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_3` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn test3_3() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_4` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn test3_4() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test3_5` is never used
[INFO] [stdout]   --> src/example3/ex3.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn test3_5() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest_number` is never used
[INFO] [stdout]  --> src/example4/ex4.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn largest_number(number_list: &[i32]) -> &i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]   --> src/example4/ex4.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn largest<T: PartialOrd>(list: &[T]) -> &T {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test4_1` is never used
[INFO] [stdout]   --> src/example4/ex4.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn test4_1() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test4_2` is never used
[INFO] [stdout]   --> src/example4/ex4.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn test4_2() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/example4/ex4_struct.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Point<T, U> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mixup` is never used
[INFO] [stdout]  --> src/example4/ex4_struct.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<X1, Y1> Point<X1, Y1> {
[INFO] [stdout]   | -------------------------- method in this implementation
[INFO] [stdout] 9 |     fn mixup<X2, Y2>(self, other: Point<X2, Y2>) -> Point<X1, Y2> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_struct` is never used
[INFO] [stdout]   --> src/example4/ex4_struct.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn test_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_mixup` is never used
[INFO] [stdout]   --> src/example4/ex4_struct.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn test_mixup() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]  --> src/example5/ex5.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Summary {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticle` is never constructed
[INFO] [stdout]  --> src/example5/ex5.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct NewsArticle {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tweet` is never constructed
[INFO] [stdout]   --> src/example5/ex5.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Tweet {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test5_1` is never used
[INFO] [stdout]   --> src/example5/ex5.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn test5_1() {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `SummaryTitle` is never used
[INFO] [stdout]  --> src/example5/ex5_2.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait SummaryTitle {
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NewsArticleTitle` is never constructed
[INFO] [stdout]  --> src/example5/ex5_2.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct NewsArticleTitle {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TweetTitle` is never constructed
[INFO] [stdout]   --> src/example5/ex5_2.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct TweetTitle {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn notify(item: &impl SummaryTitle) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `returns_summarize` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn returns_summarize() -> impl SummaryTitle {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn test() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_2` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn test_2() {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_3` is never used
[INFO] [stdout]   --> src/example5/ex5_2.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn test_3() {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "ae2af4d807c008d8b1b4ff285351ca485b1f02d5daca6c937c804930137252b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae2af4d807c008d8b1b4ff285351ca485b1f02d5daca6c937c804930137252b6", kill_on_drop: false }`
[INFO] [stdout] ae2af4d807c008d8b1b4ff285351ca485b1f02d5daca6c937c804930137252b6