[INFO] cloning repository https://github.com/ash-z01/rust-notes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ash-z01/rust-notes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fash-z01%2Frust-notes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fash-z01%2Frust-notes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4571f1eb6bbfc8206751be1fc5ff8020625bee6
[INFO] checking ash-z01/rust-notes against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fash-z01%2Frust-notes" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ash-z01/rust-notes on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ash-z01/rust-notes
[INFO] finished tweaking git repo https://github.com/ash-z01/rust-notes
[INFO] tweaked toml for git repo https://github.com/ash-z01/rust-notes written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ash-z01/rust-notes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 58ca169832b1575baa92c88aafdef0f2a176b6c8b0a10bbf054c5311f88c70cb
[INFO] running `Command { std: "docker" "start" "-a" "58ca169832b1575baa92c88aafdef0f2a176b6c8b0a10bbf054c5311f88c70cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58ca169832b1575baa92c88aafdef0f2a176b6c8b0a10bbf054c5311f88c70cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58ca169832b1575baa92c88aafdef0f2a176b6c8b0a10bbf054c5311f88c70cb", kill_on_drop: false }`
[INFO] [stdout] 58ca169832b1575baa92c88aafdef0f2a176b6c8b0a10bbf054c5311f88c70cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c42bec6ef1d52b6287715dc0ba471ebdbe65b00459d994d4de6ffa12532220a7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c42bec6ef1d52b6287715dc0ba471ebdbe65b00459d994d4de6ffa12532220a7", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-utils v0.8.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking rustprimer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/feature/fet.rs:125:26
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn paramBefore<T: Trait>(x: T) {}
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/feature/fet.rs:127:15
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn paramAfter(x: impl Trait) {}
[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/mtypes/mstr.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x = "static";
[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/mtypes/mstr.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let x: &'static str = "Hello";
[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/mymacro/mymacro.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let x = 3;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] ...
[INFO] [stdout] 72 |     foo!();
[INFO] [stdout]    |     ------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pm/pattern.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let (x, s) = tuple; // String类型并未实现Copy, 所以tuple被整体move掉了
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/pm/pattern.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let (x, s) = tuple; // String类型并未实现Copy, 所以tuple被整体move掉了
[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/pm/pattern.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let (x, _) = tuple; // 忽略String类型，i32实现了Copy , tuple 不会被 move
[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/feature/fet.rs:125:26
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn paramBefore<T: Trait>(x: T) {}
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/feature/fet.rs:127:15
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn paramAfter(x: impl Trait) {}
[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/mtypes/mstr.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x = "static";
[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/mtypes/mstr.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let x: &'static str = "Hello";
[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/mymacro/mymacro.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let x = 3;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] ...
[INFO] [stdout] 72 |     foo!();
[INFO] [stdout]    |     ------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/pm/pattern.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let (x, s) = tuple; // String类型并未实现Copy, 所以tuple被整体move掉了
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/pm/pattern.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let (x, s) = tuple; // String类型并未实现Copy, 所以tuple被整体move掉了
[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/pm/pattern.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let (x, _) = tuple; // 忽略String类型，i32实现了Copy , tuple 不会被 move
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/primeval_point/primeval.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | unsafe fn danger_will_robinson() {
[INFO] [stdout]    | -------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 38 |     unsafe {
[INFO] [stdout]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `file_double_verbose`
[INFO] [stdout]   --> src/error/opterr.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn file_double_verbose<P: AsRef<Path>>(file_path: P) -> Result<i32, CliError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/feature/fet.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     x: f64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/feature/fet.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     y: f64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> src/feature/fet.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn foo<T: Debug>(s: T) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo1`
[INFO] [stdout]   --> src/feature/fet.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn foo1<T: Debug + Clone>(s: T) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo2`
[INFO] [stdout]   --> src/feature/fet.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn foo2<T: Clone, K: Clone + Debug>(x: T, y: K) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo2_where`
[INFO] [stdout]   --> src/feature/fet.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn foo2_where<T, K>(x: T, y: K)
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fooTraitBefore`
[INFO] [stdout]    --> src/feature/fet.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn fooTraitBefore() -> Box<dyn Trait> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fooTraitAfter`
[INFO] [stdout]    --> src/feature/fet.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn fooTraitAfter() -> impl Trait {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closureBefore`
[INFO] [stdout]    --> src/feature/fet.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn closureBefore() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closureAfter`
[INFO] [stdout]    --> src/feature/fet.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn closureAfter() -> impl Fn(i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `paramBefore`
[INFO] [stdout]    --> src/feature/fet.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn paramBefore<T: Trait>(x: T) {}
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `paramAfter`
[INFO] [stdout]    --> src/feature/fet.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn paramAfter(x: impl Trait) {}
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `diverging`
[INFO] [stdout]   --> src/function/returns.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn diverging() -> ! {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `A`
[INFO] [stdout]   --> src/mtypes/compound.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct A {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `B`
[INFO] [stdout]   --> src/mtypes/compound.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct B(i32, u16, bool);
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `D`
[INFO] [stdout]   --> src/mtypes/compound.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct D;
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `C`
[INFO] [stdout]   --> src/mtypes/compound.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct C {}
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> src/mtypes/compound.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/mtypes/compound.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn new(name: &str) -> Person {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `greeting`
[INFO] [stdout]   --> src/mtypes/compound.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn greeting(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Direction`
[INFO] [stdout]   --> src/mtypes/compound.rs:81:6
[INFO] [stdout]    |
[INFO] [stdout] 81 | enum Direction {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Special`
[INFO] [stdout]   --> src/mtypes/compound.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     Special(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `East`
[INFO] [stdout]  --> src/pm/matching.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     East,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `West`
[INFO] [stdout]  --> src/pm/matching.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     West,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `North`
[INFO] [stdout]  --> src/pm/matching.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     North,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `danger_will_robinson`
[INFO] [stdout]   --> src/primeval_point/primeval.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | unsafe fn danger_will_robinson() {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_from_stdin`
[INFO] [stdout]   --> src/stdio/stdio.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn read_from_stdin(buf: &mut String) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_to_stdout1`
[INFO] [stdout]   --> src/stdio/stdio.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn write_to_stdout1(buf: &[u8]) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `input_number`
[INFO] [stdout]   --> src/stdio/stdio.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn input_number() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `input_number_macro`
[INFO] [stdout]   --> src/stdio/stdio.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn input_number_macro() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     s.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     x.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     y.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     x.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     y.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fooTraitBefore` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn fooTraitBefore() -> Box<dyn Trait> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `foo_trait_before`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fooTraitAfter` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn fooTraitAfter() -> impl Trait {
[INFO] [stdout]     |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `foo_trait_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closureBefore` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn closureBefore() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `closure_before`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closureAfter` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn closureAfter() -> impl Fn(i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `closure_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `paramBefore` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn paramBefore<T: Trait>(x: T) {}
[INFO] [stdout]     |    ^^^^^^^^^^^ help: convert the identifier to snake case: `param_before`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `paramAfter` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn paramAfter(x: impl Trait) {}
[INFO] [stdout]     |    ^^^^^^^^^^ help: convert the identifier to snake case: `param_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/primeval_point/primeval.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | unsafe fn danger_will_robinson() {
[INFO] [stdout]    | -------------------------------- because it's nested under this `unsafe` fn
[INFO] [stdout] ...
[INFO] [stdout] 38 |     unsafe {
[INFO] [stdout]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `file_double_verbose`
[INFO] [stdout]   --> src/error/opterr.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn file_double_verbose<P: AsRef<Path>>(file_path: P) -> Result<i32, CliError> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> src/feature/fet.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     x: f64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `y`
[INFO] [stdout]   --> src/feature/fet.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     y: f64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo`
[INFO] [stdout]   --> src/feature/fet.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn foo<T: Debug>(s: T) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo1`
[INFO] [stdout]   --> src/feature/fet.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn foo1<T: Debug + Clone>(s: T) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo2`
[INFO] [stdout]   --> src/feature/fet.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn foo2<T: Clone, K: Clone + Debug>(x: T, y: K) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `foo2_where`
[INFO] [stdout]   --> src/feature/fet.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn foo2_where<T, K>(x: T, y: K)
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fooTraitBefore`
[INFO] [stdout]    --> src/feature/fet.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn fooTraitBefore() -> Box<dyn Trait> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fooTraitAfter`
[INFO] [stdout]    --> src/feature/fet.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn fooTraitAfter() -> impl Trait {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closureBefore`
[INFO] [stdout]    --> src/feature/fet.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn closureBefore() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `closureAfter`
[INFO] [stdout]    --> src/feature/fet.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn closureAfter() -> impl Fn(i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `paramBefore`
[INFO] [stdout]    --> src/feature/fet.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn paramBefore<T: Trait>(x: T) {}
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `paramAfter`
[INFO] [stdout]    --> src/feature/fet.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn paramAfter(x: impl Trait) {}
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `diverging`
[INFO] [stdout]   --> src/function/returns.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn diverging() -> ! {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `A`
[INFO] [stdout]   --> src/mtypes/compound.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct A {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `B`
[INFO] [stdout]   --> src/mtypes/compound.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct B(i32, u16, bool);
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `D`
[INFO] [stdout]   --> src/mtypes/compound.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct D;
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `C`
[INFO] [stdout]   --> src/mtypes/compound.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct C {}
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> src/mtypes/compound.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Person {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/mtypes/compound.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn new(name: &str) -> Person {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `greeting`
[INFO] [stdout]   --> src/mtypes/compound.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn greeting(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Direction`
[INFO] [stdout]   --> src/mtypes/compound.rs:81:6
[INFO] [stdout]    |
[INFO] [stdout] 81 | enum Direction {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Special`
[INFO] [stdout]   --> src/mtypes/compound.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     Special(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `East`
[INFO] [stdout]  --> src/pm/matching.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     East,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `West`
[INFO] [stdout]  --> src/pm/matching.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     West,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `North`
[INFO] [stdout]  --> src/pm/matching.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     North,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `danger_will_robinson`
[INFO] [stdout]   --> src/primeval_point/primeval.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | unsafe fn danger_will_robinson() {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_from_stdin`
[INFO] [stdout]   --> src/stdio/stdio.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn read_from_stdin(buf: &mut String) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_to_stdout1`
[INFO] [stdout]   --> src/stdio/stdio.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn write_to_stdout1(buf: &[u8]) -> io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `input_number`
[INFO] [stdout]   --> src/stdio/stdio.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn input_number() {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `input_number_macro`
[INFO] [stdout]   --> src/stdio/stdio.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn input_number_macro() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     s.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     x.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     y.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     x.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `clone` that must be used
[INFO] [stdout]   --> src/feature/fet.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     y.clone();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fooTraitBefore` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn fooTraitBefore() -> Box<dyn Trait> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `foo_trait_before`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fooTraitAfter` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn fooTraitAfter() -> impl Trait {
[INFO] [stdout]     |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `foo_trait_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closureBefore` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn closureBefore() -> Box<dyn Fn(i32) -> i32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^ help: convert the identifier to snake case: `closure_before`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closureAfter` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn closureAfter() -> impl Fn(i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^ help: convert the identifier to snake case: `closure_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `paramBefore` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn paramBefore<T: Trait>(x: T) {}
[INFO] [stdout]     |    ^^^^^^^^^^^ help: convert the identifier to snake case: `param_before`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `paramAfter` should have a snake case name
[INFO] [stdout]    --> src/feature/fet.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn paramAfter(x: impl Trait) {}
[INFO] [stdout]     |    ^^^^^^^^^^ help: convert the identifier to snake case: `param_after`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `Command { std: "docker" "inspect" "c42bec6ef1d52b6287715dc0ba471ebdbe65b00459d994d4de6ffa12532220a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c42bec6ef1d52b6287715dc0ba471ebdbe65b00459d994d4de6ffa12532220a7", kill_on_drop: false }`
[INFO] [stdout] c42bec6ef1d52b6287715dc0ba471ebdbe65b00459d994d4de6ffa12532220a7