[INFO] cloning repository https://github.com/simonegiacomelli/rust-pairing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simonegiacomelli/rust-pairing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimonegiacomelli%2Frust-pairing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimonegiacomelli%2Frust-pairing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d3b121792238cfda5653b7f7b6ef8305f85fbe5
[INFO] testing simonegiacomelli/rust-pairing against 1.85.0 for beta-1.86-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimonegiacomelli%2Frust-pairing" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/simonegiacomelli/rust-pairing on toolchain 1.85.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.85.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/simonegiacomelli/rust-pairing
[INFO] finished tweaking git repo https://github.com/simonegiacomelli/rust-pairing
[INFO] tweaked toml for git repo https://github.com/simonegiacomelli/rust-pairing written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/simonegiacomelli/rust-pairing 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" "+1.85.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/lifetime2.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let i = ImportantExcerpt {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]  --> src/bin/lifetime2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct ImportantExcerpt<'a> {
[INFO] [stdout]   |        ---------------- field in this struct
[INFO] [stdout] 2 |     part: &'a str,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `level` is never used
[INFO] [stdout]  --> src/bin/lifetime2.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]   | ----------------------------- method in this implementation
[INFO] [stdout] 6 |     fn level(&self) -> i32 {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `announce_and_return_part` is never used
[INFO] [stdout]   --> src/bin/lifetime2.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- method in this implementation
[INFO] [stdout] 12 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/bin/display.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn x(x: impl Display) {}
[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/bin/display.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn y(x: impl Debug) {}
[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/bin/display.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn z(x: impl ToString) {}
[INFO] [stdout]   |      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `x` is never used
[INFO] [stdout]  --> src/bin/display.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn x(x: impl Display) {}
[INFO] [stdout]   |    ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `y` is never used
[INFO] [stdout]  --> src/bin/display.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn y(x: impl Debug) {}
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `unwrap_or` is never used
[INFO] [stdout]  --> src/bin/match.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Option1<T> {
[INFO] [stdout]   | ------------------ method in this implementation
[INFO] [stdout] 7 |     fn unwrap_or(self, other: T) -> T {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `z` is never used
[INFO] [stdout]  --> src/bin/display.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn z(x: impl ToString) {}
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/bin/methods_inner_context.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   | --------- move the `impl` block outside of this function `main`
[INFO] [stdout] ...
[INFO] [stdout] 6 |     impl Point {
[INFO] [stdout]   |     ^^^^^-----
[INFO] [stdout]   |          |
[INFO] [stdout]   |          `Point` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `z` are never read
[INFO] [stdout]  --> src/bin/destructuring_struct.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 2 |     x: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 3 |     y: i32,
[INFO] [stdout] 4 |     z: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/bin/if_unit.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x = true;
[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 import: `std::fs`
[INFO] [stdout]  --> src/bin/serde.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/ref_cycle.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout]   |     ---- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[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] 8 |     Cons((), RefCell<Rc<List>>),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/bin/serde.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/serde.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let data = "Some data!";
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/bin/serde.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let size = r.read_to_string(&mut str);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `debug` is never used
[INFO] [stdout]   --> src/bin/serde.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     impl Pippo {
[INFO] [stdout]    |     ---------- associated function in this implementation
[INFO] [stdout] 34 |         fn debug() -> String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> src/bin/unit.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     x + 1;
[INFO] [stdout]   |     ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let _ = x + 1;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `user1` is never read
[INFO] [stdout]   --> src/bin/struct_mut.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     user1 = User {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `active`, `username`, and `sign_in_count` are never read
[INFO] [stdout]  --> src/bin/struct_mut.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 2 |     active: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout] 5 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Unit` is never constructed
[INFO] [stdout]  --> src/bin/struct.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     struct Unit;
[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/bin/enum.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 |     enum WebEvent { WELoad(bool), WEClick(MouseClick), WEKeys(KeyPress) }
[INFO] [stdout]    |                     ------ ^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WebEvent` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 14 |     enum WebEvent { WELoad(()), WEClick(MouseClick), WEKeys(KeyPress) }
[INFO] [stdout]    |                            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bin/enum.rs:14:43
[INFO] [stdout]    |
[INFO] [stdout] 14 |     enum WebEvent { WELoad(bool), WEClick(MouseClick), WEKeys(KeyPress) }
[INFO] [stdout]    |                                   ------- ^^^^^^^^^^
[INFO] [stdout]    |                                   |
[INFO] [stdout]    |                                   field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WebEvent` 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] 14 |     enum WebEvent { WELoad(bool), WEClick(()), WEKeys(KeyPress) }
[INFO] [stdout]    |                                           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bin/enum.rs:14:63
[INFO] [stdout]    |
[INFO] [stdout] 14 |     enum WebEvent { WELoad(bool), WEClick(MouseClick), WEKeys(KeyPress) }
[INFO] [stdout]    |                                                        ------ ^^^^^^^^
[INFO] [stdout]    |                                                        |
[INFO] [stdout]    |                                                        field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WebEvent` 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] 14 |     enum WebEvent { WELoad(bool), WEClick(MouseClick), WEKeys(()) }
[INFO] [stdout]    |                                                               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `result` is assigned to, but never used
[INFO] [stdout]  --> src/bin/lifetime.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let result;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_result` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/bin/lifetime.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         result = longest(string1.as_str(), string2.as_str());
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s2`
[INFO] [stdout]   --> src/bin/string.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let s2 = s1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/bin/macro.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let v = vec1![1,2,3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example_1`
[INFO] [stdout]   --> src/bin/fn_trait.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let example_1 = double_then_f(5, |n| n + 1);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example_2`
[INFO] [stdout]   --> src/bin/fn_trait.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let example_2 = double_then_f(5, |n| n + dynamic_value);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example_3`
[INFO] [stdout]   --> src/bin/fn_trait.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let example_3 = double_then_f(5, move |n| n + h.x);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::type_name`
[INFO] [stdout]  --> src/bin/sqlx_testbed.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::type_name;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sqlx::mysql::MySqlPoolOptions`
[INFO] [stdout]  --> src/bin/sqlx_testbed.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sqlx::mysql::MySqlPoolOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MIGRATOR` is never used
[INFO] [stdout]   --> src/bin/sqlx_testbed.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | static MIGRATOR: Migrator = sqlx::migrate!();
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/bin/fn_move.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/bin/fn_move.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/drop.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let c = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/bin/drop.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/bin/rc_strong_count.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/rc_strong_count.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/bin/rc_strong_count.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons((), ()),
[INFO] [stdout]   |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sqlx::mysql::MySqlPoolOptions`
[INFO] [stdout]  --> src/bin/sqlx_migrate.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sqlx::mysql::MySqlPoolOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MIGRATOR` is never used
[INFO] [stdout]  --> src/bin/sqlx_migrate.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | static MIGRATOR: Migrator = sqlx::migrate!();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/bin/file.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/bin/file.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |         Ok(f) => { println!("Ok") }
[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 import: `std::collections::HashMap`
[INFO] [stdout]  --> src/bin/arc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/bin/arc.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]  --> src/bin/modules.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct Breakfast {
[INFO] [stdout]   |                --------- field in this struct
[INFO] [stdout] 3 |         pub toast: String,
[INFO] [stdout] 4 |         seasonal_fruit: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i1`
[INFO] [stdout]  --> src/bin/ref_cell_panic.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let i1 = ref_cell.borrow();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i1`
[INFO] [stdout]  --> src/bin/ref_cell_panic.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let i1 = ref_cell.borrow();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]  --> src/bin/ref_cell_panic.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let m = ref_cell.borrow_mut();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/replace.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = "Hello foo!";
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/bin/rc.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/rc.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/bin/rc.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons((), ()),
[INFO] [stdout]   |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/bin/arc_mutex.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]  --> src/bin/borrow.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let r1 = &mut s;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]  --> src/bin/borrow.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let r2 = &mut s;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]  --> src/bin/methods.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Rectangle {
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 8 |     fn area(&self) -> u32 {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/spawn.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     th.join();
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _ = th.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] running `Command { std: "docker" "inspect" "407104787f82d6767cde2b460616fe315bef8d0ac348a1db04356479cd16edd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "407104787f82d6767cde2b460616fe315bef8d0ac348a1db04356479cd16edd2", kill_on_drop: false }`
[INFO] [stdout] 407104787f82d6767cde2b460616fe315bef8d0ac348a1db04356479cd16edd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a82034e011f99546891c90c502f8a11c6422ce119236a7733e506d2f9618efef
[INFO] running `Command { std: "docker" "start" "-a" "a82034e011f99546891c90c502f8a11c6422ce119236a7733e506d2f9618efef", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-pairing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]   --> src/properties.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use std::iter::Map;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]  --> src/bin/fn_move.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Rectangle` is never constructed
[INFO] [stdout]  --> src/bin/fn_move.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Rectangle {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> src/bin/unit.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     x + 1;
[INFO] [stdout]   |     ^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let _ = x + 1;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `seasonal_fruit` is never read
[INFO] [stdout]  --> src/bin/modules.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub struct Breakfast {
[INFO] [stdout]   |                --------- field in this struct
[INFO] [stdout] 3 |         pub toast: String,
[INFO] [stdout] 4 |         seasonal_fruit: String,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/bin/replace.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut s = "Hello foo!";
[INFO] [stdout]   |         ----^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sqlx::mysql::MySqlPoolOptions`
[INFO] [stdout]  --> src/bin/sqlx_migrate.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sqlx::mysql::MySqlPoolOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MIGRATOR` is never used
[INFO] [stdout]  --> src/bin/sqlx_migrate.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | static MIGRATOR: Migrator = sqlx::migrate!();
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/lifetime2.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let i = ImportantExcerpt {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `part` is never read
[INFO] [stdout]  --> src/bin/lifetime2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct ImportantExcerpt<'a> {
[INFO] [stdout]   |        ---------------- field in this struct
[INFO] [stdout] 2 |     part: &'a str,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `level` is never used
[INFO] [stdout]  --> src/bin/lifetime2.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]   | ----------------------------- method in this implementation
[INFO] [stdout] 6 |     fn level(&self) -> i32 {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `announce_and_return_part` is never used
[INFO] [stdout]   --> src/bin/lifetime2.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stdout]    | ----------------------------- method in this implementation
[INFO] [stdout] 12 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]  --> src/bin/borrow.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let r1 = &mut s;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]  --> src/bin/borrow.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let r2 = &mut s;
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/spawn.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     th.join();
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let _ = th.join();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `result` is assigned to, but never used
[INFO] [stdout]  --> src/bin/lifetime.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let result;
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_result` instead
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]  --> src/bin/lifetime.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |         result = longest(string1.as_str(), string2.as_str());
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/bin/arc_mutex.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/bin/file.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]  --> src/bin/file.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |         Ok(f) => { println!("Ok") }
[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: `s2`
[INFO] [stdout]   --> src/bin/string.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let s2 = s1;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/bin/arc.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/bin/arc.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::type_name`
[INFO] [stdout]  --> src/bin/sqlx_testbed.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::type_name;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sqlx::mysql::MySqlPoolOptions`
[INFO] [stdout]  --> src/bin/sqlx_testbed.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sqlx::mysql::MySqlPoolOptions;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `MIGRATOR` is never used
[INFO] [stdout]   --> src/bin/sqlx_testbed.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | static MIGRATOR: Migrator = sqlx::migrate!();
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example_1`
[INFO] [stdout]   --> src/bin/fn_trait.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let example_1 = double_then_f(5, |n| n + 1);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example_2`
[INFO] [stdout]   --> src/bin/fn_trait.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let example_2 = double_then_f(5, |n| n + dynamic_value);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `example_3`
[INFO] [stdout]   --> src/bin/fn_trait.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let example_3 = double_then_f(5, move |n| n + h.x);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/bin/ref_cycle.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stdout]   |     ---- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[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] 8 |     Cons((), RefCell<Rc<List>>),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/bin/serde.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/bin/serde.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{File, OpenOptions};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/serde.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let data = "Some data!";
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]   --> src/bin/serde.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let size = r.read_to_string(&mut str);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `unwrap_or` is never used
[INFO] [stdout]  --> src/bin/match.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> Option1<T> {
[INFO] [stdout]   | ------------------ method in this implementation
[INFO] [stdout] 7 |     fn unwrap_or(self, other: T) -> T {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i1`
[INFO] [stdout]  --> src/bin/ref_cell_panic.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let i1 = ref_cell.borrow();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i1`
[INFO] [stdout]  --> src/bin/ref_cell_panic.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let i1 = ref_cell.borrow();
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]  --> src/bin/ref_cell_panic.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let m = ref_cell.borrow_mut();
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/bin/methods_inner_context.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   | --------- move the `impl` block outside of this function `main`
[INFO] [stdout] ...
[INFO] [stdout] 6 |     impl Point {
[INFO] [stdout]   |     ^^^^^-----
[INFO] [stdout]   |          |
[INFO] [stdout]   |          `Point` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/bin/rc.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/rc.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/bin/rc.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons((), ()),
[INFO] [stdout]   |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `x` and `z` are never read
[INFO] [stdout]  --> src/bin/destructuring_struct.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Point {
[INFO] [stdout]   |        ----- fields in this struct
[INFO] [stdout] 2 |     x: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout] 3 |     y: i32,
[INFO] [stdout] 4 |     z: i32,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `area` is never used
[INFO] [stdout]  --> src/bin/methods.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | impl Rectangle {
[INFO] [stdout]   | -------------- method in this implementation
[INFO] [stdout] 8 |     fn area(&self) -> u32 {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `user1` is never read
[INFO] [stdout]   --> src/bin/struct_mut.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     user1 = User {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `active`, `username`, and `sign_in_count` are never read
[INFO] [stdout]  --> src/bin/struct_mut.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct User {
[INFO] [stdout]   |        ---- fields in this struct
[INFO] [stdout] 2 |     active: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     username: String,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 4 |     email: String,
[INFO] [stdout] 5 |     sign_in_count: u64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/bin/rc_strong_count.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/rc_strong_count.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]  --> src/bin/macro.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let v = vec1![1,2,3];
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/bin/rc_strong_count.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Cons((), ()),
[INFO] [stdout]   |          ~~  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/bin/display.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn x(x: impl Display) {}
[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/bin/display.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn y(x: impl Debug) {}
[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/bin/display.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn z(x: impl ToString) {}
[INFO] [stdout]   |      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `x` is never used
[INFO] [stdout]  --> src/bin/display.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn x(x: impl Display) {}
[INFO] [stdout]   |    ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `y` is never used
[INFO] [stdout]  --> src/bin/display.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn y(x: impl Debug) {}
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `z` is never used
[INFO] [stdout]  --> src/bin/display.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn z(x: impl ToString) {}
[INFO] [stdout]   |    ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/bin/drop.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let c = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> src/bin/drop.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/bin/if_unit.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x = true;
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.99s
[INFO] running `Command { std: "docker" "inspect" "a82034e011f99546891c90c502f8a11c6422ce119236a7733e506d2f9618efef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a82034e011f99546891c90c502f8a11c6422ce119236a7733e506d2f9618efef", kill_on_drop: false }`
[INFO] [stdout] a82034e011f99546891c90c502f8a11c6422ce119236a7733e506d2f9618efef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc9d3a54b9be72c8f1c23b0f8b53adaa59554a3ccd5a046a2763402a0725533e
[INFO] running `Command { std: "docker" "start" "-a" "cc9d3a54b9be72c8f1c23b0f8b53adaa59554a3ccd5a046a2763402a0725533e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::iter::Map`
[INFO] [stderr]  --> src/properties.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::iter::Map;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Map`
[INFO] [stderr]   --> src/properties.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     use std::iter::Map;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (lib) generated 1 warning (run `cargo fix --lib -p rust-pairing` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-pairing` (lib test) generated 2 warnings (1 duplicate) (run `cargo fix --lib -p rust-pairing --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `example_1`
[INFO] [stderr]   --> src/bin/fn_trait.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let example_1 = double_then_f(5, |n| n + 1);
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `example_2`
[INFO] [stderr]   --> src/bin/fn_trait.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let example_2 = double_then_f(5, |n| n + dynamic_value);
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `example_3`
[INFO] [stderr]   --> src/bin/fn_trait.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let example_3 = double_then_f(5, move |n| n + h.x);
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_example_3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/bin/arc_mutex.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "fn_trait" test) generated 3 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "arc_mutex" test) generated 1 warning (run `cargo fix --bin "arc_mutex" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/bin/if_unit.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let x = true;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bin/spawn.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     th.join();
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let _ = th.join();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/replace.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut s = "Hello foo!";
[INFO] [stderr]   |         ----^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sqlx::mysql::MySqlPoolOptions`
[INFO] [stderr]  --> src/bin/sqlx_migrate.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use sqlx::mysql::MySqlPoolOptions;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static `MIGRATOR` is never used
[INFO] [stderr]  --> src/bin/sqlx_migrate.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | static MIGRATOR: Migrator = sqlx::migrate!();
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::type_name`
[INFO] [stderr]  --> src/bin/sqlx_testbed.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::any::type_name;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sqlx::mysql::MySqlPoolOptions`
[INFO] [stderr]  --> src/bin/sqlx_testbed.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use sqlx::mysql::MySqlPoolOptions;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static `MIGRATOR` is never used
[INFO] [stderr]   --> src/bin/sqlx_testbed.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | static MIGRATOR: Migrator = sqlx::migrate!();
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "if_unit" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "spawn" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "replace" test) generated 1 warning (run `cargo fix --bin "replace" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-pairing` (bin "sqlx_migrate" test) generated 2 warnings (run `cargo fix --bin "sqlx_migrate" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-pairing` (bin "sqlx_testbed" test) generated 3 warnings (run `cargo fix --bin "sqlx_testbed" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]  --> src/bin/unit.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     x + 1;
[INFO] [stderr]   |     ^^^^^ the arithmetic operation produces a value
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let _ = x + 1;
[INFO] [stderr]   |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `user1` is never read
[INFO] [stderr]   --> src/bin/struct_mut.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     user1 = User {
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `active`, `username`, and `sign_in_count` are never read
[INFO] [stderr]  --> src/bin/struct_mut.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct User {
[INFO] [stderr]   |        ---- fields in this struct
[INFO] [stderr] 2 |     active: bool,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 3 |     username: String,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 4 |     email: String,
[INFO] [stderr] 5 |     sign_in_count: u64,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]  --> src/bin/fn_move.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::ops::Add;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Rectangle` is never constructed
[INFO] [stderr]  --> src/bin/fn_move.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Rectangle {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stderr]  --> src/bin/methods_inner_context.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   | --------- move the `impl` block outside of this function `main`
[INFO] [stderr] ...
[INFO] [stderr] 6 |     impl Point {
[INFO] [stderr]   |     ^^^^^-----
[INFO] [stderr]   |          |
[INFO] [stderr]   |          `Point` is not local
[INFO] [stderr]   |
[INFO] [stderr]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stderr]   = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/bin/arc.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]  --> src/bin/arc.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "unit" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "struct_mut" test) generated 2 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "fn_move" test) generated 2 warnings (run `cargo fix --bin "fn_move" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-pairing` (bin "methods_inner_context" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "arc" test) generated 2 warnings (run `cargo fix --bin "arc" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: unused variable: `r1`
[INFO] [stderr]  --> src/bin/borrow.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let r1 = &mut s;
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r2`
[INFO] [stderr]  --> src/bin/borrow.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let r2 = &mut s;
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/bin/serde.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/bin/serde.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::{File, OpenOptions};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/bin/serde.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let data = "Some data!";
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/bin/serde.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let size = r.read_to_string(&mut str);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: method `area` is never used
[INFO] [stderr]  --> src/bin/methods.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | impl Rectangle {
[INFO] [stderr]   | -------------- method in this implementation
[INFO] [stderr] 8 |     fn area(&self) -> u32 {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s2`
[INFO] [stderr]   --> src/bin/string.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let s2 = s1;
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "borrow" test) generated 2 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "serde" test) generated 4 warnings (run `cargo fix --bin "serde" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `rust-pairing` (bin "methods" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "string" test) generated 1 warning
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]  --> src/bin/macro.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let v = vec1![1,2,3];
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/bin/file.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::{File, OpenOptions};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]  --> src/bin/file.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 |         Ok(f) => { println!("Ok") }
[INFO] [stderr]   |            ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `seasonal_fruit` is never read
[INFO] [stderr]  --> src/bin/modules.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     pub struct Breakfast {
[INFO] [stderr]   |                --------- field in this struct
[INFO] [stderr] 3 |         pub toast: String,
[INFO] [stderr] 4 |         seasonal_fruit: String,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/bin/rc_strong_count.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/bin/rc_strong_count.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let c = Cons(4, Rc::clone(&a));
[INFO] [stderr]    |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]  --> src/bin/rc_strong_count.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Cons(i32, Rc<List>),
[INFO] [stderr]   |     ---- ^^^  ^^^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     fields in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Cons((), ()),
[INFO] [stderr]   |          ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "macro" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "file" test) generated 2 warnings (run `cargo fix --bin "file" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-pairing` (bin "modules" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "rc_strong_count" test) generated 3 warnings
[INFO] [stderr] warning: unused variable: `i1`
[INFO] [stderr]  --> src/bin/ref_cell_panic.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let i1 = ref_cell.borrow();
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i1`
[INFO] [stderr]  --> src/bin/ref_cell_panic.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let i1 = ref_cell.borrow();
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_i1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `m`
[INFO] [stderr]  --> src/bin/ref_cell_panic.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let m = ref_cell.borrow_mut();
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `result` is assigned to, but never used
[INFO] [stderr]  --> src/bin/lifetime.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let result;
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider using `_result` instead
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]  --> src/bin/lifetime.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |         result = longest(string1.as_str(), string2.as_str());
[INFO] [stderr]   |         ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/bin/drop.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let c = CustomSmartPointer {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]   --> src/bin/drop.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let d = CustomSmartPointer {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: method `unwrap_or` is never used
[INFO] [stderr]  --> src/bin/match.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl<T> Option1<T> {
[INFO] [stderr]   | ------------------ method in this implementation
[INFO] [stderr] 7 |     fn unwrap_or(self, other: T) -> T {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "ref_cell_panic" test) generated 3 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "lifetime" test) generated 2 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "drop" test) generated 2 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "match" test) generated 1 warning
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/bin/display.rs:5:6
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn x(x: impl Display) {}
[INFO] [stderr]   |      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/bin/display.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn y(x: impl Debug) {}
[INFO] [stderr]   |      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/bin/display.rs:9:6
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn z(x: impl ToString) {}
[INFO] [stderr]   |      ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: function `x` is never used
[INFO] [stderr]  --> src/bin/display.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn x(x: impl Display) {}
[INFO] [stderr]   |    ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `y` is never used
[INFO] [stderr]  --> src/bin/display.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn y(x: impl Debug) {}
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `z` is never used
[INFO] [stderr]  --> src/bin/display.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn z(x: impl ToString) {}
[INFO] [stderr]   |    ^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `x` and `z` are never read
[INFO] [stderr]  --> src/bin/destructuring_struct.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Point {
[INFO] [stderr]   |        ----- fields in this struct
[INFO] [stderr] 2 |     x: i32,
[INFO] [stderr]   |     ^
[INFO] [stderr] 3 |     y: i32,
[INFO] [stderr] 4 |     z: i32,
[INFO] [stderr]   |     ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/bin/lifetime2.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let i = ImportantExcerpt {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `part` is never read
[INFO] [stderr]  --> src/bin/lifetime2.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct ImportantExcerpt<'a> {
[INFO] [stderr]   |        ---------------- field in this struct
[INFO] [stderr] 2 |     part: &'a str,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `level` is never used
[INFO] [stderr]  --> src/bin/lifetime2.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stderr]   | ----------------------------- method in this implementation
[INFO] [stderr] 6 |     fn level(&self) -> i32 {
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `announce_and_return_part` is never used
[INFO] [stderr]   --> src/bin/lifetime2.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl<'a> ImportantExcerpt<'a> {
[INFO] [stderr]    | ----------------------------- method in this implementation
[INFO] [stderr] 12 |     fn announce_and_return_part(&self, announcement: &str) -> &str {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]  --> src/bin/ref_cycle.rs:8:10
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Cons(i32, RefCell<Rc<List>>),
[INFO] [stderr]   |     ---- ^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Cons((), RefCell<Rc<List>>),
[INFO] [stderr]   |          ~~
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/bin/rc.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let b = Cons(3, Rc::clone(&a));
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/bin/rc.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let c = Cons(4, Rc::clone(&a));
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]  --> src/bin/rc.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Cons(i32, Rc<List>),
[INFO] [stderr]   |     ---- ^^^  ^^^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     fields in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Cons((), ()),
[INFO] [stderr]   |          ~~  ~~
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-pairing` (bin "display" test) generated 6 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "destructuring_struct" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "lifetime2" test) generated 4 warnings
[INFO] [stderr] warning: `rust-pairing` (bin "ref_cycle" test) generated 1 warning
[INFO] [stderr] warning: `rust-pairing` (bin "rc" test) generated 3 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_pairing-1f6a8af07e5e0c1c)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test properties::test::test ... ok
[INFO] [stdout] test properties::test::test_empty_lines ... ok
[INFO] [stdout] test properties::test::test_without_equal ... ok
[INFO] [stdout] test properties::test::test_eq_blank ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/arc.rs (/opt/rustwide/target/debug/deps/arc-31b504819772023f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/arc_mutex.rs (/opt/rustwide/target/debug/deps/arc_mutex-541fb7cc3092f85b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/array.rs (/opt/rustwide/target/debug/deps/array-843ae9f2afbc78b0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/borrow.rs (/opt/rustwide/target/debug/deps/borrow-cd30fb16fa8ba208)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests src/bin/box2.rs (/opt/rustwide/target/debug/deps/box2-4ddf18e9d3921def)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/chars.rs (/opt/rustwide/target/debug/deps/chars-93f6a7e50ea308e0)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/destructuring_struct.rs (/opt/rustwide/target/debug/deps/destructuring_struct-a86285bb882f07c3)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/display.rs (/opt/rustwide/target/debug/deps/display-5690b520c5295a0a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/drop.rs (/opt/rustwide/target/debug/deps/drop-cb4d18028551ef7b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/drop_early.rs (/opt/rustwide/target/debug/deps/drop_early-be87c595266cb72a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/enum.rs (/opt/rustwide/target/debug/deps/enum-361e82f8b120420e)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/file.rs (/opt/rustwide/target/debug/deps/file-ce887a9a9d827ed3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/fn_match.rs (/opt/rustwide/target/debug/deps/fn_match-763fd1d30966031c)
[INFO] [stderr]      Running unittests src/bin/fn_move.rs (/opt/rustwide/target/debug/deps/fn_move-f9f9422372c67ee7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/fn_mut.rs (/opt/rustwide/target/debug/deps/fn_mut-0887827a7d28007f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/fn_trait.rs (/opt/rustwide/target/debug/deps/fn_trait-fa6f8d9ed6490288)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/for_in.rs (/opt/rustwide/target/debug/deps/for_in-1b96829d2d345f8c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/if_let.rs (/opt/rustwide/target/debug/deps/if_let-bdf794a80a9725de)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/if_unit.rs (/opt/rustwide/target/debug/deps/if_unit-37cb404a3dd2d135)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ip_parse.rs (/opt/rustwide/target/debug/deps/ip_parse-72ea54a1bff3f449)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/lifetime.rs (/opt/rustwide/target/debug/deps/lifetime-4936769052110e06)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/lifetime2.rs (/opt/rustwide/target/debug/deps/lifetime2-5a934220041a3889)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/loop.rs (/opt/rustwide/target/debug/deps/loop-900e46eb2938db03)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/macro.rs (/opt/rustwide/target/debug/deps/macro-7009d24bfdb3d157)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/match.rs (/opt/rustwide/target/debug/deps/match-8a9fcae3f098f2a3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/match_guard.rs (/opt/rustwide/target/debug/deps/match_guard-c44a3d4036369ec5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/methods.rs (/opt/rustwide/target/debug/deps/methods-0cce049208b7703f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/methods_inner_context.rs (/opt/rustwide/target/debug/deps/methods_inner_context-36e78e1294ffb58f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/methods_mut.rs (/opt/rustwide/target/debug/deps/methods_mut-0c9be45e776f312c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/modules.rs (/opt/rustwide/target/debug/deps/modules-45cd3db830e02e24)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/mpsc.rs (/opt/rustwide/target/debug/deps/mpsc-44d4afb894fe0002)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/mut_string.rs (/opt/rustwide/target/debug/deps/mut_string-ce65be97a532521f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests src/bin/mutex.rs (/opt/rustwide/target/debug/deps/mutex-3031fb56c285a962)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/panic.rs (/opt/rustwide/target/debug/deps/panic-c39d696bc24ef744)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/pattern_binding.rs (/opt/rustwide/target/debug/deps/pattern_binding-5418c4f50c448a71)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/rc.rs (/opt/rustwide/target/debug/deps/rc-7b7110b4ed5d0fcb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/rc_strong_count.rs (/opt/rustwide/target/debug/deps/rc_strong_count-c5f1f47a5f8423a4)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ref_cell_panic.rs (/opt/rustwide/target/debug/deps/ref_cell_panic-32ccb283ebfbb6df)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/ref_cycle.rs (/opt/rustwide/target/debug/deps/ref_cycle-970a694816946d4c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/replace.rs (/opt/rustwide/target/debug/deps/replace-2884625dbdee50e2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_pairing-4e39b578d9e9b13d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_in_root ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_in_root stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::test_in_root' panicked at src/main.rs:6:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 4
[INFO] [stdout]  right: 5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x61ee2c92832a - std::backtrace_rs::backtrace::libunwind::trace::h88deb10bd0145eb8
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
[INFO] [stdout]    1:     0x61ee2c92832a - std::backtrace_rs::backtrace::trace_unsynchronized::he1036f5481c14dff
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x61ee2c92832a - std::sys::backtrace::_print_fmt::hecc345b6e70c4b20
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x61ee2c92832a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::he089f96442833f67
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x61ee2c94dcb3 - core::fmt::rt::Argument::fmt::h1f77cded99c71a14
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/fmt/rt.rs:177:76
[INFO] [stdout]    5:     0x61ee2c94dcb3 - core::fmt::write::h2f210ed4c94745cb
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/fmt/mod.rs:1440:21
[INFO] [stdout]    6:     0x61ee2c925443 - std::io::Write::write_fmt::he723b56f7e0bd522
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/io/mod.rs:1887:15
[INFO] [stdout]    7:     0x61ee2c928172 - std::sys::backtrace::BacktraceLock::print::h810fbd31421329e6
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    8:     0x61ee2c929860 - std::panicking::default_hook::{{closure}}::hbaad47ed9dc6356d
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:295:22
[INFO] [stdout]    9:     0x61ee2c9295fd - std::panicking::default_hook::h24e207139139d40a
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:319:9
[INFO] [stdout]   10:     0x61ee2c8f3383 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h63353c459bb27956
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   11:     0x61ee2c8f3383 - test::test_main::{{closure}}::hd5af4d6c4e32fe08
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/test/src/lib.rs:134:21
[INFO] [stdout]   12:     0x61ee2c92a093 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3af32c23caf5c679
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   13:     0x61ee2c92a093 - std::panicking::rust_panic_with_hook::ha9131beeb2ddc506
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:836:13
[INFO] [stdout]   14:     0x61ee2c929d6a - std::panicking::begin_panic_handler::{{closure}}::h1bba0eaeb6da506f
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:701:13
[INFO] [stdout]   15:     0x61ee2c928829 - std::sys::backtrace::__rust_end_short_backtrace::h1d1ca3eade483f4c
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   16:     0x61ee2c9299fd - rust_begin_unwind
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:692:5
[INFO] [stdout]   17:     0x61ee2c8b8c30 - core::panicking::panic_fmt::h896a0727a1a943f9
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panicking.rs:75:14
[INFO] [stdout]   18:     0x61ee2c8b8f52 - core::panicking::assert_failed_inner::ha51bf8fa7906dee4
[INFO] [stdout]   19:     0x61ee2c8b74c2 - core::panicking::assert_failed::h61f85fb0f9cdc36d
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panicking.rs:364:5
[INFO] [stdout]   20:     0x61ee2c8b9fe5 - rust_pairing::tests::test_in_root::he58f3aa440bd9de9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:6:9
[INFO] [stdout]   21:     0x61ee2c8b9f47 - rust_pairing::tests::test_in_root::{{closure}}::hf6bd664077451b6a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:4:22
[INFO] [stdout]   22:     0x61ee2c8b98a6 - core::ops::function::FnOnce::call_once::he3d29e71d3ef66a5
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x61ee2c8f8b2b - core::ops::function::FnOnce::call_once::h8acc80b5a33ff319
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x61ee2c8f8b2b - test::__rust_begin_short_backtrace::h52b6da716ad42b7d
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/test/src/lib.rs:632:18
[INFO] [stdout]   25:     0x61ee2c8f7a63 - test::run_test_in_process::{{closure}}::h2580047890abbefe
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/test/src/lib.rs:655:60
[INFO] [stdout]   26:     0x61ee2c8f7a63 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h936f8c89d0a99c40
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x61ee2c8f7a63 - std::panicking::try::do_call::h868682cc368697f9
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:584:40
[INFO] [stdout]   28:     0x61ee2c8f7a63 - std::panicking::try::h0356ffc38cbb5501
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:547:19
[INFO] [stdout]   29:     0x61ee2c8f7a63 - std::panic::catch_unwind::h74edf102a3082536
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panic.rs:358:14
[INFO] [stdout]   30:     0x61ee2c8f7a63 - test::run_test_in_process::hc27d69576b7224e4
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/test/src/lib.rs:655:27
[INFO] [stdout]   31:     0x61ee2c8f7a63 - test::run_test::{{closure}}::h9f3bfaf910429adb
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/test/src/lib.rs:576:43
[INFO] [stdout]   32:     0x61ee2c8bb795 - test::run_test::{{closure}}::h3d537cdce8ec5816
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/test/src/lib.rs:606:41
[INFO] [stdout]   33:     0x61ee2c8bb795 - std::sys::backtrace::__rust_begin_short_backtrace::hb51d9a6c67ec382d
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x61ee2c8bf1d6 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5738f3abb9603fe6
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/thread/mod.rs:564:17
[INFO] [stdout]   35:     0x61ee2c8bf1d6 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h5e9f4b56e45e8108
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x61ee2c8bf1d6 - std::panicking::try::do_call::ha36db853b2f34e23
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:584:40
[INFO] [stdout]   37:     0x61ee2c8bf1d6 - std::panicking::try::h57e1aa33a0efb1be
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panicking.rs:547:19
[INFO] [stdout]   38:     0x61ee2c8bf1d6 - std::panic::catch_unwind::hdb71a6103024936e
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/panic.rs:358:14
[INFO] [stdout]   39:     0x61ee2c8bf1d6 - std::thread::Builder::spawn_unchecked_::{{closure}}::h8caa22218f423ab1
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/thread/mod.rs:562:30
[INFO] [stdout]   40:     0x61ee2c8bf1d6 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb3b44780e9c053e5
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x61ee2c92defb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2649f14f1b1c150d
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/alloc/src/boxed.rs:1993:9
[INFO] [stdout]   42:     0x61ee2c92defb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb2ade58cb34e1bc4
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/alloc/src/boxed.rs:1993:9
[INFO] [stdout]   43:     0x61ee2c92defb - std::sys::pal::unix::thread::Thread::new::thread_start::ha07e360225fa3528
[INFO] [stdout]                                at /rustc/4d91de4e48198da2e33413efdcd9cd2cc0c46688/library/std/src/sys/pal/unix/thread.rs:106:17
[INFO] [stdout]   44:     0x79dd2cc1aac3 - <unknown>
[INFO] [stdout]   45:     0x79dd2ccaba04 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_in_root
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rust-pairing`
[INFO] running `Command { std: "docker" "inspect" "cc9d3a54b9be72c8f1c23b0f8b53adaa59554a3ccd5a046a2763402a0725533e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc9d3a54b9be72c8f1c23b0f8b53adaa59554a3ccd5a046a2763402a0725533e", kill_on_drop: false }`
[INFO] [stdout] cc9d3a54b9be72c8f1c23b0f8b53adaa59554a3ccd5a046a2763402a0725533e
