[INFO] cloning repository https://github.com/inblack67/Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/inblack67/Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finblack67%2FRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finblack67%2FRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37146a31e78cae8dfb5c7cfad503a141f13deab8
[INFO] checking inblack67/Rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finblack67%2FRust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/inblack67/Rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/inblack67/Rust
[INFO] finished tweaking git repo https://github.com/inblack67/Rust
[INFO] tweaked toml for git repo https://github.com/inblack67/Rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/inblack67/Rust 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a82b48876dc5606ae78e775776e5d8dfc9040c5059e289947c13ebb74b8158e
[INFO] running `Command { std: "docker" "start" "-a" "8a82b48876dc5606ae78e775776e5d8dfc9040c5059e289947c13ebb74b8158e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a82b48876dc5606ae78e775776e5d8dfc9040c5059e289947c13ebb74b8158e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a82b48876dc5606ae78e775776e5d8dfc9040c5059e289947c13ebb74b8158e", kill_on_drop: false }`
[INFO] [stdout] 8a82b48876dc5606ae78e775776e5d8dfc9040c5059e289947c13ebb74b8158e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27faa71c37184f6454c4be3b33bcc5a73341858510692ec9364c4b02b645e04f
[INFO] running `Command { std: "docker" "start" "-a" "27faa71c37184f6454c4be3b33bcc5a73341858510692ec9364c4b02b645e04f", kill_on_drop: false }`
[INFO] [stderr]     Checking Rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/error_handling.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f = match f {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f = File::open("text.txt").unwrap(); // unwraps to data
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let f = File::open("text.txt").expect("Could not open file"); // unwraps to data or panics with the provided error
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/error_handling.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f = match f {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let s = Square { x: 1 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let s = Square { x: "hello" };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let s = Square { x: true };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f = File::open("text.txt").unwrap(); // unwraps to data
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let f = File::open("text.txt").expect("Could not open file"); // unwraps to data or panics with the provided error
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/lifetimes.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let s: &'static str = "static life"; // will live until the entire duration of the program
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let s = Square { x: 1 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let s = Square { x: "hello" };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let s = Square { x: true };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/lifetimes.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let s: &'static str = "static life"; // will live until the entire duration of the program
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/vectors.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let x: Vec<i32> = vec![1, 2, 3]; // resizable array => length not known at compile time
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/enums.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 10 |     x: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     y: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/enums.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout]    |     -- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(()), // tuple of point struct
[INFO] [stdout]    |        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DOWN`, `LEFT`, and `RIGHT` are never constructed
[INFO] [stdout]   --> src/enums.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout] 16 |     DOWN(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     LEFT(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     RIGHT(Point),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DownKey`, `LeftKey`, and `RightKey` are never constructed
[INFO] [stdout]   --> src/enums.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum Keys {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 23 |     UpKey(String),
[INFO] [stdout] 24 |     DownKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     LeftKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     RightKey(String),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files` is never used
[INFO] [stdout]  --> src/error_handling.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn play_with_files() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files_2` is never used
[INFO] [stdout]   --> src/error_handling.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn play_with_files_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exit` is never used
[INFO] [stdout]   --> src/error_handling.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn exit(x: Option<i32>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `p` is never used
[INFO] [stdout]  --> src/generics.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn p<T: fmt::Debug>(x: T) {
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]  --> src/generics.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Square<T> {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 9 |     x: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/generics.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<T> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `item` is never used
[INFO] [stdout]   --> src/generics.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> A<T> {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn item(&self) -> &T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `M` is never constructed
[INFO] [stdout]   --> src/generics.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct M<U, V> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pr` is never used
[INFO] [stdout]  --> src/lifetimes.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn pr<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/lifetimes.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<'a, 'b> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_TIMERS` is never used
[INFO] [stdout]  --> src/mpsc.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const NUM_TIMERS: usize = 24; // usize => architechture dependent => 32bit or 64bit
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `timer` is never used
[INFO] [stdout]  --> src/mpsc.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn timer(d: usize, tx: mpsc::Sender<usize>) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/mpsc.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Iterator` is never used
[INFO] [stdout]  --> src/my_iterators.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Iterator {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyOption` is never used
[INFO] [stdout]  --> src/options.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum MyOption<T> {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]  --> src/result_enum.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Result<T, E> {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `B` is never constructed
[INFO] [stdout]   --> src/traits.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct B(u32);
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(f64),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(f64),
[INFO] [stdout]   |     --- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(()),
[INFO] [stdout]   |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(String),
[INFO] [stdout]   |     ---- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/vectors.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let x: Vec<i32> = vec![1, 2, 3]; // resizable array => length not known at compile time
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/enums.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 10 |     x: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     y: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/enums.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout]    |     -- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(()), // tuple of point struct
[INFO] [stdout]    |        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DOWN`, `LEFT`, and `RIGHT` are never constructed
[INFO] [stdout]   --> src/enums.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout] 16 |     DOWN(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     LEFT(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     RIGHT(Point),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DownKey`, `LeftKey`, and `RightKey` are never constructed
[INFO] [stdout]   --> src/enums.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum Keys {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 23 |     UpKey(String),
[INFO] [stdout] 24 |     DownKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     LeftKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     RightKey(String),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files` is never used
[INFO] [stdout]  --> src/error_handling.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn play_with_files() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files_2` is never used
[INFO] [stdout]   --> src/error_handling.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn play_with_files_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exit` is never used
[INFO] [stdout]   --> src/error_handling.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn exit(x: Option<i32>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `p` is never used
[INFO] [stdout]  --> src/generics.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn p<T: fmt::Debug>(x: T) {
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]  --> src/generics.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Square<T> {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 9 |     x: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/generics.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<T> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `item` is never used
[INFO] [stdout]   --> src/generics.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> A<T> {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn item(&self) -> &T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `M` is never constructed
[INFO] [stdout]   --> src/generics.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct M<U, V> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pr` is never used
[INFO] [stdout]  --> src/lifetimes.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn pr<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/lifetimes.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<'a, 'b> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_TIMERS` is never used
[INFO] [stdout]  --> src/mpsc.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const NUM_TIMERS: usize = 24; // usize => architechture dependent => 32bit or 64bit
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `timer` is never used
[INFO] [stdout]  --> src/mpsc.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn timer(d: usize, tx: mpsc::Sender<usize>) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/mpsc.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Iterator` is never used
[INFO] [stdout]  --> src/my_iterators.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Iterator {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyOption` is never used
[INFO] [stdout]  --> src/options.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum MyOption<T> {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]  --> src/result_enum.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Result<T, E> {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `B` is never constructed
[INFO] [stdout]   --> src/traits.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct B(u32);
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(f64),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(f64),
[INFO] [stdout]   |     --- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(()),
[INFO] [stdout]   |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(String),
[INFO] [stdout]   |     ---- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "27faa71c37184f6454c4be3b33bcc5a73341858510692ec9364c4b02b645e04f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27faa71c37184f6454c4be3b33bcc5a73341858510692ec9364c4b02b645e04f", kill_on_drop: false }`
[INFO] [stdout] 27faa71c37184f6454c4be3b33bcc5a73341858510692ec9364c4b02b645e04f
[INFO] checking inblack67/Rust against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finblack67%2FRust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/inblack67/Rust on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/inblack67/Rust
[INFO] finished tweaking git repo https://github.com/inblack67/Rust
[INFO] tweaked toml for git repo https://github.com/inblack67/Rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/inblack67/Rust 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 687c6e0faad9d561c2740060689a0d4c7fb604ab98a99893655e6b7ef0f14f9c
[INFO] running `Command { std: "docker" "start" "-a" "687c6e0faad9d561c2740060689a0d4c7fb604ab98a99893655e6b7ef0f14f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "687c6e0faad9d561c2740060689a0d4c7fb604ab98a99893655e6b7ef0f14f9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "687c6e0faad9d561c2740060689a0d4c7fb604ab98a99893655e6b7ef0f14f9c", kill_on_drop: false }`
[INFO] [stdout] 687c6e0faad9d561c2740060689a0d4c7fb604ab98a99893655e6b7ef0f14f9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75e1661423d2ff95aa3e1589738205aad8ab63f1ba313592947fff8359aca05c
[INFO] running `Command { std: "docker" "start" "-a" "75e1661423d2ff95aa3e1589738205aad8ab63f1ba313592947fff8359aca05c", kill_on_drop: false }`
[INFO] [stderr]     Checking Rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/error_handling.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f = match f {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f = File::open("text.txt").unwrap(); // unwraps to data
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let f = File::open("text.txt").expect("Could not open file"); // unwraps to data or panics with the provided error
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/error_handling.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let f = match f {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let f = File::open("text.txt").unwrap(); // unwraps to data
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/error_handling.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let f = File::open("text.txt").expect("Could not open file"); // unwraps to data or panics with the provided error
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let s = Square { x: 1 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let s = Square { x: "hello" };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let s = Square { x: true };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let s = Square { x: 1 };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:29:6
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let s = Square { x: "hello" };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/generics.rs:30:6
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let s = Square { x: true };
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/lifetimes.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let s: &'static str = "static life"; // will live until the entire duration of the program
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/lifetimes.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let s: &'static str = "static life"; // will live until the entire duration of the program
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/vectors.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let x: Vec<i32> = vec![1, 2, 3]; // resizable array => length not known at compile time
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/vectors.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let x: Vec<i32> = vec![1, 2, 3]; // resizable array => length not known at compile time
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/enums.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 10 |     x: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     y: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/enums.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout]    |     -- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(()), // tuple of point struct
[INFO] [stdout]    |        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DOWN`, `LEFT`, and `RIGHT` are never constructed
[INFO] [stdout]   --> src/enums.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout] 16 |     DOWN(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     LEFT(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     RIGHT(Point),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DownKey`, `LeftKey`, and `RightKey` are never constructed
[INFO] [stdout]   --> src/enums.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum Keys {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 23 |     UpKey(String),
[INFO] [stdout] 24 |     DownKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     LeftKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     RightKey(String),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files` is never used
[INFO] [stdout]  --> src/error_handling.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn play_with_files() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files_2` is never used
[INFO] [stdout]   --> src/error_handling.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn play_with_files_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exit` is never used
[INFO] [stdout]   --> src/error_handling.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn exit(x: Option<i32>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `p` is never used
[INFO] [stdout]  --> src/generics.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn p<T: fmt::Debug>(x: T) {
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]  --> src/generics.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Square<T> {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 9 |     x: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/generics.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<T> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `item` is never used
[INFO] [stdout]   --> src/generics.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> A<T> {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn item(&self) -> &T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `M` is never constructed
[INFO] [stdout]   --> src/generics.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct M<U, V> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pr` is never used
[INFO] [stdout]  --> src/lifetimes.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn pr<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/lifetimes.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<'a, 'b> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_TIMERS` is never used
[INFO] [stdout]  --> src/mpsc.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const NUM_TIMERS: usize = 24; // usize => architechture dependent => 32bit or 64bit
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `timer` is never used
[INFO] [stdout]  --> src/mpsc.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn timer(d: usize, tx: mpsc::Sender<usize>) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/mpsc.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Iterator` is never used
[INFO] [stdout]  --> src/my_iterators.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Iterator {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyOption` is never used
[INFO] [stdout]  --> src/options.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum MyOption<T> {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]  --> src/result_enum.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Result<T, E> {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `B` is never constructed
[INFO] [stdout]   --> src/traits.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct B(u32);
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(f64),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(f64),
[INFO] [stdout]   |     --- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(()),
[INFO] [stdout]   |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `y` are never read
[INFO] [stdout]   --> src/enums.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Point {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 10 |     x: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout] 11 |     y: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(String),
[INFO] [stdout]   |     ---- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/enums.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout]    |     -- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 15 |     UP(()), // tuple of point struct
[INFO] [stdout]    |        ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/mutex_and_channel.rs:9:16
[INFO] [stdout]    |
[INFO] [stdout] 8  |   fn producer(tx: mpsc::SyncSender<usize>) -> thread::JoinHandle<()> {
[INFO] [stdout]    |               --------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 9  |       thread::spawn(move || {
[INFO] [stdout]    |  ___________________^
[INFO] [stdout] 10 | |         for i in 1..100 {
[INFO] [stdout] 11 | |             tx.send(i).unwrap();
[INFO] [stdout] 12 | |         }
[INFO] [stdout] 13 | |     })
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DOWN`, `LEFT`, and `RIGHT` are never constructed
[INFO] [stdout]   --> src/enums.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Direction {
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 15 |     UP(Point), // tuple of point struct
[INFO] [stdout] 16 |     DOWN(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     LEFT(Point),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 18 |     RIGHT(Point),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DownKey`, `LeftKey`, and `RightKey` are never constructed
[INFO] [stdout]   --> src/enums.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum Keys {
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 23 |     UpKey(String),
[INFO] [stdout] 24 |     DownKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 25 |     LeftKey(String),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 26 |     RightKey(String),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keys` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files` is never used
[INFO] [stdout]  --> src/error_handling.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn play_with_files() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_with_files_2` is never used
[INFO] [stdout]   --> src/error_handling.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn play_with_files_2() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `exit` is never used
[INFO] [stdout]   --> src/error_handling.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn exit(x: Option<i32>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `p` is never used
[INFO] [stdout]  --> src/generics.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn p<T: fmt::Debug>(x: T) {
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]  --> src/generics.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Square<T> {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 9 |     x: T,
[INFO] [stdout]   |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/generics.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<T> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `item` is never used
[INFO] [stdout]   --> src/generics.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> A<T> {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 17 |     fn item(&self) -> &T {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `M` is never constructed
[INFO] [stdout]   --> src/generics.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct M<U, V> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `pr` is never used
[INFO] [stdout]  --> src/lifetimes.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn pr<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |    ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `A` is never constructed
[INFO] [stdout]   --> src/lifetimes.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct A<'a, 'b> {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_TIMERS` is never used
[INFO] [stdout]  --> src/mpsc.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const NUM_TIMERS: usize = 24; // usize => architechture dependent => 32bit or 64bit
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `timer` is never used
[INFO] [stdout]  --> src/mpsc.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn timer(d: usize, tx: mpsc::Sender<usize>) {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/mpsc.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Iterator` is never used
[INFO] [stdout]  --> src/my_iterators.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Iterator {
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `MyOption` is never used
[INFO] [stdout]  --> src/options.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum MyOption<T> {
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]  --> src/result_enum.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum Result<T, E> {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `B` is never constructed
[INFO] [stdout]   --> src/traits.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct B(u32);
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(f64),
[INFO] [stdout]   |     ----- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Float(()),
[INFO] [stdout]   |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(f64),
[INFO] [stdout]   |     --- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Int(()),
[INFO] [stdout]   |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/vectors.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(String),
[INFO] [stdout]   |     ---- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `GenericVector` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Text(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/mutex_and_channel.rs:9:16
[INFO] [stdout]    |
[INFO] [stdout] 8  |   fn producer(tx: mpsc::SyncSender<usize>) -> thread::JoinHandle<()> {
[INFO] [stdout]    |               --------------------------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 9  |       thread::spawn(move || {
[INFO] [stdout]    |  ___________________^
[INFO] [stdout] 10 | |         for i in 1..100 {
[INFO] [stdout] 11 | |             tx.send(i).unwrap();
[INFO] [stdout] 12 | |         }
[INFO] [stdout] 13 | |     })
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `Rust` (bin "Rust" test) due to 2 previous errors; 32 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `Rust` (bin "Rust") due to 2 previous errors; 32 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "75e1661423d2ff95aa3e1589738205aad8ab63f1ba313592947fff8359aca05c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75e1661423d2ff95aa3e1589738205aad8ab63f1ba313592947fff8359aca05c", kill_on_drop: false }`
[INFO] [stdout] 75e1661423d2ff95aa3e1589738205aad8ab63f1ba313592947fff8359aca05c