[INFO] cloning repository https://github.com/ZhangYan0001/rust_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZhangYan0001/rust_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhangYan0001%2Frust_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhangYan0001%2Frust_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e06beb3a522637e8d891932c15003debd5828f69
[INFO] checking ZhangYan0001/rust_test/e06beb3a522637e8d891932c15003debd5828f69 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhangYan0001%2Frust_test" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZhangYan0001/rust_test on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZhangYan0001/rust_test
[INFO] finished tweaking git repo https://github.com/ZhangYan0001/rust_test
[INFO] tweaked toml for git repo https://github.com/ZhangYan0001/rust_test written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ZhangYan0001/rust_test 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0d396e6df4cfac12a49b9c4456e0e73c9d81fb76bb685eff41a6deae6db033e
[INFO] running `Command { std: "docker" "start" "-a" "a0d396e6df4cfac12a49b9c4456e0e73c9d81fb76bb685eff41a6deae6db033e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0d396e6df4cfac12a49b9c4456e0e73c9d81fb76bb685eff41a6deae6db033e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0d396e6df4cfac12a49b9c4456e0e73c9d81fb76bb685eff41a6deae6db033e", kill_on_drop: false }`
[INFO] [stdout] a0d396e6df4cfac12a49b9c4456e0e73c9d81fb76bb685eff41a6deae6db033e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1957f55565469caaf0f63d18e15067c67232f50547ec5c9a4dfe52936cd297d8
[INFO] running `Command { std: "docker" "start" "-a" "1957f55565469caaf0f63d18e15067c67232f50547ec5c9a4dfe52936cd297d8", kill_on_drop: false }`
[INFO] [stderr]     Checking advance_rs_learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::vec::IntoIter`
[INFO] [stdout]    --> src/lib.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         use std::vec::IntoIter;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]    --> src/lib.rs:325:13
[INFO] [stdout]     |
[INFO] [stdout] 325 |         use std::cell::RefCell;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Cell`
[INFO] [stdout]    --> src/lib.rs:530:13
[INFO] [stdout]     |
[INFO] [stdout] 530 |         use std::cell::Cell;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]    --> src/lib.rs:531:13
[INFO] [stdout]     |
[INFO] [stdout] 531 |         use std::cell::RefCell;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Barrier`
[INFO] [stdout]    --> src/lib.rs:532:25
[INFO] [stdout]     |
[INFO] [stdout] 532 |         use std::sync::{Arc, Barrier};
[INFO] [stdout]     |                         ^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]    --> src/lib.rs:534:13
[INFO] [stdout]     |
[INFO] [stdout] 534 |         use std::time::Duration;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread_local::ThreadLocal`
[INFO] [stdout]    --> src/lib.rs:535:13
[INFO] [stdout]     |
[INFO] [stdout] 535 |         use thread_local::ThreadLocal;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::IntoIter`
[INFO] [stdout]    --> src/lib.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         use std::vec::IntoIter;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]   --> src/lib.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:343:17
[INFO] [stdout]     |
[INFO] [stdout] 343 |             let b = *a + 1;
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/lib.rs:418:17
[INFO] [stdout]     |
[INFO] [stdout] 418 |             let sum = *z + 1;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]    --> src/lib.rs:438:17
[INFO] [stdout]     |
[INFO] [stdout] 438 |             let v2 = *v + 1;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `query` and `value` are never read
[INFO] [stdout]   --> src/lib.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub struct Cache<T>
[INFO] [stdout]    |                    ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |             query: T,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 32 |             value: Option<u32>,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/lib.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | /         impl<T> Cache<T>
[INFO] [stdout] 36 | |         where
[INFO] [stdout] 37 | |             T: Fn(u32) -> u32,
[INFO] [stdout]    | |______________________________- associated items in this implementation
[INFO] [stdout] 38 |           {
[INFO] [stdout] 39 |               fn new(query: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |               fn value(&mut self, arg: u32) -> u32 {
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_once` is never used
[INFO] [stdout]   --> src/lib.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 86 |         fn fn_once<F>(func: F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_mut` is never used
[INFO] [stdout]   --> src/lib.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_fn` is never used
[INFO] [stdout]    --> src/lib.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_vec` is never used
[INFO] [stdout]    --> src/lib.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |         fn for_vec(vec: &mut Vec<i32>) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_vec` is never used
[INFO] [stdout]    --> src/lib.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |         fn iter_vec(vec: &mut Vec<i32>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diff_iters` is never used
[INFO] [stdout]    --> src/lib.rs:167:12
[INFO] [stdout]     |
[INFO] [stdout] 167 |         fn diff_iters() {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `consumer_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |         fn consumer_adapter() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:225:12
[INFO] [stdout]     |
[INFO] [stdout] 225 |         fn iterator_adapter() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_hash_map` is never used
[INFO] [stdout]    --> src/lib.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 235 |         fn collect_hash_map() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/lib.rs:243:16
[INFO] [stdout]     |
[INFO] [stdout] 243 |         struct Shoe {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |         fn closure_adapter(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]    --> src/lib.rs:257:16
[INFO] [stdout]     |
[INFO] [stdout] 257 |         struct Counter {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:262:16
[INFO] [stdout]     |
[INFO] [stdout] 261 |         impl Counter {
[INFO] [stdout]     |         ------------ associated function in this implementation
[INFO] [stdout] 262 |             fn new() -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `box_ex` is never used
[INFO] [stdout]    --> src/lib.rs:339:12
[INFO] [stdout]     |
[INFO] [stdout] 339 |         fn box_ex() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dered_ex` is never used
[INFO] [stdout]    --> src/lib.rs:411:12
[INFO] [stdout]     |
[INFO] [stdout] 411 |         fn dered_ex() {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:424:20
[INFO] [stdout]     |
[INFO] [stdout] 423 |             impl<T> MyBox<T> {
[INFO] [stdout]     |             ---------------- associated function in this implementation
[INFO] [stdout] 424 |                 fn new(x: T) -> MyBox<T> {
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rc_ex` is never used
[INFO] [stdout]    --> src/lib.rs:451:12
[INFO] [stdout]     |
[INFO] [stdout] 451 |         fn rc_ex() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_ex` is never used
[INFO] [stdout]    --> src/lib.rs:462:12
[INFO] [stdout]     |
[INFO] [stdout] 462 |         fn arc_ex() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cell_ex` is never used
[INFO] [stdout]    --> src/lib.rs:476:12
[INFO] [stdout]     |
[INFO] [stdout] 476 |         fn cell_ex() {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_thread` is never used
[INFO] [stdout]    --> src/lib.rs:582:12
[INFO] [stdout]     |
[INFO] [stdout] 582 |         fn move_thread() {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]   --> src/lib.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/lib.rs:314:24
[INFO] [stdout]     |
[INFO] [stdout] 314 |                 .map(|(idx, val)| val)
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:343:17
[INFO] [stdout]     |
[INFO] [stdout] 343 |             let b = *a + 1;
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/lib.rs:418:17
[INFO] [stdout]     |
[INFO] [stdout] 418 |             let sum = *z + 1;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]    --> src/lib.rs:438:17
[INFO] [stdout]     |
[INFO] [stdout] 438 |             let v2 = *v + 1;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `query` and `value` are never read
[INFO] [stdout]   --> src/lib.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub struct Cache<T>
[INFO] [stdout]    |                    ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |             query: T,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 32 |             value: Option<u32>,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/lib.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | /         impl<T> Cache<T>
[INFO] [stdout] 36 | |         where
[INFO] [stdout] 37 | |             T: Fn(u32) -> u32,
[INFO] [stdout]    | |______________________________- associated items in this implementation
[INFO] [stdout] 38 |           {
[INFO] [stdout] 39 |               fn new(query: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |               fn value(&mut self, arg: u32) -> u32 {
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_mut` is never used
[INFO] [stdout]   --> src/lib.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_fn` is never used
[INFO] [stdout]    --> src/lib.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_vec` is never used
[INFO] [stdout]    --> src/lib.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |         fn for_vec(vec: &mut Vec<i32>) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_vec` is never used
[INFO] [stdout]    --> src/lib.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |         fn iter_vec(vec: &mut Vec<i32>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diff_iters` is never used
[INFO] [stdout]    --> src/lib.rs:167:12
[INFO] [stdout]     |
[INFO] [stdout] 167 |         fn diff_iters() {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `consumer_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |         fn consumer_adapter() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:225:12
[INFO] [stdout]     |
[INFO] [stdout] 225 |         fn iterator_adapter() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_hash_map` is never used
[INFO] [stdout]    --> src/lib.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 235 |         fn collect_hash_map() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/lib.rs:243:16
[INFO] [stdout]     |
[INFO] [stdout] 243 |         struct Shoe {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |         fn closure_adapter(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `box_ex` is never used
[INFO] [stdout]    --> src/lib.rs:339:12
[INFO] [stdout]     |
[INFO] [stdout] 339 |         fn box_ex() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dered_ex` is never used
[INFO] [stdout]    --> src/lib.rs:411:12
[INFO] [stdout]     |
[INFO] [stdout] 411 |         fn dered_ex() {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:424:20
[INFO] [stdout]     |
[INFO] [stdout] 423 |             impl<T> MyBox<T> {
[INFO] [stdout]     |             ---------------- associated function in this implementation
[INFO] [stdout] 424 |                 fn new(x: T) -> MyBox<T> {
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rc_ex` is never used
[INFO] [stdout]    --> src/lib.rs:451:12
[INFO] [stdout]     |
[INFO] [stdout] 451 |         fn rc_ex() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_ex` is never used
[INFO] [stdout]    --> src/lib.rs:462:12
[INFO] [stdout]     |
[INFO] [stdout] 462 |         fn arc_ex() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cell_ex` is never used
[INFO] [stdout]    --> src/lib.rs:476:12
[INFO] [stdout]     |
[INFO] [stdout] 476 |         fn cell_ex() {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_thread` is never used
[INFO] [stdout]    --> src/lib.rs:582:12
[INFO] [stdout]     |
[INFO] [stdout] 582 |         fn move_thread() {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "1957f55565469caaf0f63d18e15067c67232f50547ec5c9a4dfe52936cd297d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1957f55565469caaf0f63d18e15067c67232f50547ec5c9a4dfe52936cd297d8", kill_on_drop: false }`
[INFO] [stdout] 1957f55565469caaf0f63d18e15067c67232f50547ec5c9a4dfe52936cd297d8