[INFO] cloning repository https://github.com/daniel-konoplanski/the_rust_programming_language
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daniel-konoplanski/the_rust_programming_language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-konoplanski%2Fthe_rust_programming_language", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-konoplanski%2Fthe_rust_programming_language'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1b84536b8ef08531edbb737bec53d313dd43e81
[INFO] testing daniel-konoplanski/the_rust_programming_language against 1.94.0 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaniel-konoplanski%2Fthe_rust_programming_language" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/daniel-konoplanski/the_rust_programming_language
[INFO] finished tweaking git repo https://github.com/daniel-konoplanski/the_rust_programming_language
[INFO] tweaked toml for git repo https://github.com/daniel-konoplanski/the_rust_programming_language written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/daniel-konoplanski/the_rust_programming_language on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/daniel-konoplanski/the_rust_programming_language 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" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.103
[INFO] [stderr]   Downloaded syn v2.0.110
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27a4f2077214f64d0c3c574beb1dde4bfec3ad29fa3273dce8d5a5448cbfa495
[INFO] running `Command { std: "docker" "start" "-a" "27a4f2077214f64d0c3c574beb1dde4bfec3ad29fa3273dce8d5a5448cbfa495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27a4f2077214f64d0c3c574beb1dde4bfec3ad29fa3273dce8d5a5448cbfa495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27a4f2077214f64d0c3c574beb1dde4bfec3ad29fa3273dce8d5a5448cbfa495", kill_on_drop: false }`
[INFO] [stdout] 27a4f2077214f64d0c3c574beb1dde4bfec3ad29fa3273dce8d5a5448cbfa495
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efdd87033987f575c80e98cdabffc6830f8c98672b8c515e1bf232dcfdc1c7b3
[INFO] running `Command { std: "docker" "start" "-a" "efdd87033987f575c80e98cdabffc6830f8c98672b8c515e1bf232dcfdc1c7b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling department v0.1.0 (/opt/rustwide/workdir/department)
[INFO] [stderr]    Compiling pattern_matching v0.1.0 (/opt/rustwide/workdir/pattern_matching)
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir/variables)
[INFO] [stderr]    Compiling collections v0.1.0 (/opt/rustwide/workdir/collections)
[INFO] [stderr]    Compiling result v0.1.0 (/opt/rustwide/workdir/result)
[INFO] [stderr]    Compiling ref_lifetimes v0.1.0 (/opt/rustwide/workdir/ref_lifetimes)
[INFO] [stderr]    Compiling tuples v0.1.0 (/opt/rustwide/workdir/tuples)
[INFO] [stderr]    Compiling generics2 v0.1.0 (/opt/rustwide/workdir/generics2)
[INFO] [stderr]    Compiling data_types v0.1.0 (/opt/rustwide/workdir/data_types)
[INFO] [stderr]    Compiling strings v0.1.0 (/opt/rustwide/workdir/strings)
[INFO] [stderr]    Compiling structs v0.1.0 (/opt/rustwide/workdir/structs)
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir/hello_world)
[INFO] [stderr]    Compiling generics v0.1.0 (/opt/rustwide/workdir/generics)
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> pattern_matching/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `width` is never used
[INFO] [stdout]   --> structs/src/main.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Rectangle
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn width(&self) -> u32
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> data_types/src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let x = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> data_types/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let y: i32 = 1_000_000;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> data_types/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let c = 'z';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> data_types/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let z: char = 'ℤ';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isThisCalled` should have a snake case name
[INFO] [stdout]   --> data_types/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let isThisCalled: bool = false;
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `is_this_called`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]  --> pattern_matching/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum UsState
[INFO] [stdout]   |      ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Alaska,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> pattern_matching/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Coin
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg_str`
[INFO] [stdout]  --> strings/src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let msg_str = greeting_msg.to_string();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg_str`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> strings/src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let s3 = s1 + &s2; // note s1 has been moved here and can no longer be used
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> strings/src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let s = format!("{s1}-{s2}-{}", &s3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `int_point`
[INFO] [stdout]   --> generics/src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let int_point = Point { x: 5, y: 7 };
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_int_point`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write` and `error`
[INFO] [stdout]  --> result/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 |     io::{Read, Write},
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling enums v0.1.0 (/opt/rustwide/workdir/enums)
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> result/src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let greeting_file = match greeting_file_result {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> result/src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let greeting_file = File::open("hello.txt").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> result/src/main.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let greeting_file =
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> result/src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     read_username_from_file();
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let _ = read_username_from_file();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> result/src/main.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     read_username_from_file2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let _ = read_username_from_file2();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]    Compiling median v0.1.0 (/opt/rustwide/workdir/median)
[INFO] [stderr]    Compiling slices v0.1.0 (/opt/rustwide/workdir/slices)
[INFO] [stderr]    Compiling traits v0.1.0 (/opt/rustwide/workdir/traits)
[INFO] [stdout] warning: unused variable: `third`
[INFO] [stdout]   --> collections/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let third = &vec2[2];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_third`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hashmap v0.1.0 (/opt/rustwide/workdir/hashmap)
[INFO] [stdout] warning: unused variable: `some_var2`
[INFO] [stdout]   --> collections/src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let some_var2 = 33;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling panic v0.1.0 (/opt/rustwide/workdir/panic)
[INFO] [stdout] warning: unused variable: `some_var1`
[INFO] [stdout]   --> collections/src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let some_var1 = "a";
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pig_latin v0.1.0 (/opt/rustwide/workdir/pig_latin)
[INFO] [stdout] warning: unused variable: `some_var2`
[INFO] [stdout]   --> collections/src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let some_var2 = "b";
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `thirdO` should have a snake case name
[INFO] [stdout]   --> collections/src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let thirdO = vec2.get(2);
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `third_o`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::array`
[INFO] [stdout]  --> slices/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::array;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mode` is never used
[INFO] [stdout]   --> median/src/main.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn mode(vec: &[i32]) -> i32
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> traits/src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 46 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hello_world_cargo v0.1.0 (/opt/rustwide/workdir/hello_world_cargo)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> hashmap/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]   --> enums/src/main.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let message = Message::Move { x: 4, y: 5 };
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> enums/src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     V4((u8, u8, u8, u8)),
[INFO] [stdout]   |     -- ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 4 -     V4((u8, u8, u8, u8)),
[INFO] [stdout] 4 +     V4(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `V6` is never constructed
[INFO] [stdout]  --> enums/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum IpAddrKind
[INFO] [stdout]   |      ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 5 |     V6(String),
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit` and `ChangeColor` are never constructed
[INFO] [stdout]   --> enums/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Message
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division` is never used
[INFO] [stdout]   --> enums/src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn division(number: i32) -> Option<u32>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.36s
[INFO] running `Command { std: "docker" "inspect" "efdd87033987f575c80e98cdabffc6830f8c98672b8c515e1bf232dcfdc1c7b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efdd87033987f575c80e98cdabffc6830f8c98672b8c515e1bf232dcfdc1c7b3", kill_on_drop: false }`
[INFO] [stdout] efdd87033987f575c80e98cdabffc6830f8c98672b8c515e1bf232dcfdc1c7b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a4de8e647890015a3005e4fec25cb8420691b0b03d791ff49eca5a20f4f56e9
[INFO] running `Command { std: "docker" "start" "-a" "9a4de8e647890015a3005e4fec25cb8420691b0b03d791ff49eca5a20f4f56e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling result v0.1.0 (/opt/rustwide/workdir/result)
[INFO] [stderr]    Compiling panic v0.1.0 (/opt/rustwide/workdir/panic)
[INFO] [stderr]    Compiling ref_lifetimes v0.1.0 (/opt/rustwide/workdir/ref_lifetimes)
[INFO] [stderr]    Compiling enums v0.1.0 (/opt/rustwide/workdir/enums)
[INFO] [stderr]    Compiling strings v0.1.0 (/opt/rustwide/workdir/strings)
[INFO] [stderr]    Compiling generics v0.1.0 (/opt/rustwide/workdir/generics)
[INFO] [stderr]    Compiling collections v0.1.0 (/opt/rustwide/workdir/collections)
[INFO] [stderr]    Compiling data_types v0.1.0 (/opt/rustwide/workdir/data_types)
[INFO] [stderr]    Compiling generics2 v0.1.0 (/opt/rustwide/workdir/generics2)
[INFO] [stderr]    Compiling pig_latin v0.1.0 (/opt/rustwide/workdir/pig_latin)
[INFO] [stderr]    Compiling slices v0.1.0 (/opt/rustwide/workdir/slices)
[INFO] [stderr]    Compiling tuples v0.1.0 (/opt/rustwide/workdir/tuples)
[INFO] [stderr]    Compiling hashmap v0.1.0 (/opt/rustwide/workdir/hashmap)
[INFO] [stderr]    Compiling department v0.1.0 (/opt/rustwide/workdir/department)
[INFO] [stderr]    Compiling pattern_matching v0.1.0 (/opt/rustwide/workdir/pattern_matching)
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stdout] warning: unused imports: `Write` and `error`
[INFO] [stdout]  --> result/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 |     io::{Read, Write},
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> hashmap/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg_str`
[INFO] [stdout]  --> strings/src/main.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let msg_str = greeting_msg.to_string();
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg_str`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s3`
[INFO] [stdout]   --> strings/src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let s3 = s1 + &s2; // note s1 has been moved here and can no longer be used
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> strings/src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let s = format!("{s1}-{s2}-{}", &s3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::num`
[INFO] [stdout]  --> pattern_matching/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::num;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `int_point`
[INFO] [stdout]   --> generics/src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let int_point = Point { x: 5, y: 7 };
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_int_point`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> result/src/main.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let greeting_file = match greeting_file_result {
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> data_types/src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let x = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> result/src/main.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let greeting_file = File::open("hello.txt").unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `greeting_file`
[INFO] [stdout]   --> result/src/main.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let greeting_file =
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]  --> data_types/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let y: i32 = 1_000_000;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> data_types/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let c = 'z';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]   --> data_types/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let z: char = 'ℤ';
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::array`
[INFO] [stdout]  --> slices/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::array;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `isThisCalled` should have a snake case name
[INFO] [stdout]   --> data_types/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let isThisCalled: bool = false;
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `is_this_called`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alaska` is never constructed
[INFO] [stdout]  --> pattern_matching/src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum UsState
[INFO] [stdout]   |      ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Alaska,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stdout]   --> pattern_matching/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Coin
[INFO] [stdout]    |      ---- variants in this enum
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     Penny,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 13 |     Nickel,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 14 |     Dime,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> result/src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     read_username_from_file();
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let _ = read_username_from_file();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> result/src/main.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 |     read_username_from_file2();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let _ = read_username_from_file2();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]   --> enums/src/main.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let message = Message::Move { x: 4, y: 5 };
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> enums/src/main.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 |     V4((u8, u8, u8, u8)),
[INFO] [stdout]   |     -- ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 4 -     V4((u8, u8, u8, u8)),
[INFO] [stdout] 4 +     V4(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `V6` is never constructed
[INFO] [stdout]  --> enums/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum IpAddrKind
[INFO] [stdout]   |      ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 5 |     V6(String),
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit` and `ChangeColor` are never constructed
[INFO] [stdout]   --> enums/src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum Message
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 11 | {
[INFO] [stdout] 12 |     Quit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     ChangeColor(i32, i32, i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division` is never used
[INFO] [stdout]   --> enums/src/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn division(number: i32) -> Option<u32>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `third`
[INFO] [stdout]   --> collections/src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let third = &vec2[2];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_third`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_var2`
[INFO] [stdout]   --> collections/src/main.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let some_var2 = 33;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_var1`
[INFO] [stdout]   --> collections/src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let some_var1 = "a";
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `some_var2`
[INFO] [stdout]   --> collections/src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let some_var2 = "b";
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `thirdO` should have a snake case name
[INFO] [stdout]   --> collections/src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let thirdO = vec2.get(2);
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case: `third_o`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hello_world_cargo v0.1.0 (/opt/rustwide/workdir/hello_world_cargo)
[INFO] [stderr]    Compiling adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir/hello_world)
[INFO] [stderr]    Compiling structs v0.1.0 (/opt/rustwide/workdir/structs)
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir/variables)
[INFO] [stderr]    Compiling median v0.1.0 (/opt/rustwide/workdir/median)
[INFO] [stderr]    Compiling traits v0.1.0 (/opt/rustwide/workdir/traits)
[INFO] [stdout] warning: function `mode` is never used
[INFO] [stdout]   --> median/src/main.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn mode(vec: &[i32]) -> i32
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `width` is never used
[INFO] [stdout]   --> structs/src/main.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Rectangle
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn width(&self) -> u32
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> traits/src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<T> Pair<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 46 |     fn new(x: T, y: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "9a4de8e647890015a3005e4fec25cb8420691b0b03d791ff49eca5a20f4f56e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a4de8e647890015a3005e4fec25cb8420691b0b03d791ff49eca5a20f4f56e9", kill_on_drop: false }`
[INFO] [stdout] 9a4de8e647890015a3005e4fec25cb8420691b0b03d791ff49eca5a20f4f56e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 18e2071c060a641d702dbde636517eeb6de1ed2a8c2bab731123802e24d1e0eb
[INFO] running `Command { std: "docker" "start" "-a" "18e2071c060a641d702dbde636517eeb6de1ed2a8c2bab731123802e24d1e0eb", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `third`
[INFO] [stdout] 
[INFO] [stderr]   --> collections/src/main.rs:12:9
[INFO] [stdout] running 2 tests
[INFO] [stderr]    |
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr] 12 |     let third = &vec2[2];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_third`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_var2`
[INFO] [stderr]   --> collections/src/main.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let some_var2 = 33;
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_var1`
[INFO] [stderr]   --> collections/src/main.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let some_var1 = "a";
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `some_var2`
[INFO] [stderr]   --> collections/src/main.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let some_var2 = "b";
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_some_var2`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `thirdO` should have a snake case name
[INFO] [stderr]   --> collections/src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let thirdO = vec2.get(2);
[INFO] [stderr]    |         ^^^^^^ help: convert the identifier to snake case: `third_o`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::array`
[INFO] [stderr]  --> slices/src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::array;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::num`
[INFO] [stderr]  --> pattern_matching/src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::num;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Alaska` is never constructed
[INFO] [stderr]  --> pattern_matching/src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | enum UsState
[INFO] [stderr]   |      ------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 7 |     Alaska,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Penny`, `Nickel`, and `Dime` are never constructed
[INFO] [stderr]   --> pattern_matching/src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | enum Coin
[INFO] [stderr]    |      ---- variants in this enum
[INFO] [stderr] 11 | {
[INFO] [stderr] 12 |     Penny,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 13 |     Nickel,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 14 |     Dime,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> hashmap/src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg_str`
[INFO] [stderr]  --> strings/src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let msg_str = greeting_msg.to_string();
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_msg_str`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s3`
[INFO] [stderr]   --> strings/src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let s3 = s1 + &s2; // note s1 has been moved here and can no longer be used
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> strings/src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let s = format!("{s1}-{s2}-{}", &s3);
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: method `width` is never used
[INFO] [stderr]   --> structs/src/main.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr]  8 | impl Rectangle
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 15 |     fn width(&self) -> u32
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write` and `error`
[INFO] [stderr]  --> result/src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     error,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 5 |     io::{Read, Write},
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> result/src/main.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let greeting_file = match greeting_file_result {
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> result/src/main.rs:52:9
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let greeting_file = File::open("hello.txt").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `greeting_file`
[INFO] [stderr]   --> result/src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let greeting_file =
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_greeting_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> result/src/main.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     read_username_from_file();
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let _ = read_username_from_file();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> result/src/main.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     read_username_from_file2();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let _ = read_username_from_file2();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> data_types/src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let x = 5;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]  --> data_types/src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let y: i32 = 1_000_000;
[INFO] [stderr]   |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> data_types/src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let c = 'z';
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> data_types/src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let z: char = 'ℤ';
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `isThisCalled` should have a snake case name
[INFO] [stderr]   --> data_types/src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let isThisCalled: bool = false;
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `is_this_called`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `collections` (bin "collections" test) generated 5 warnings (run `cargo fix --bin "collections" -p collections --tests` to apply 4 suggestions)
[INFO] [stderr] warning: `slices` (bin "slices" test) generated 1 warning (run `cargo fix --bin "slices" -p slices --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `pattern_matching` (bin "pattern_matching" test) generated 3 warnings (run `cargo fix --bin "pattern_matching" -p pattern_matching --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `hashmap` (bin "hashmap" test) generated 1 warning (run `cargo fix --bin "hashmap" -p hashmap --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `strings` (bin "strings" test) generated 3 warnings (run `cargo fix --bin "strings" -p strings --tests` to apply 3 suggestions)
[INFO] [stderr] warning: `structs` (bin "structs" test) generated 1 warning
[INFO] [stderr] warning: `result` (bin "result" test) generated 6 warnings (run `cargo fix --bin "result" -p result --tests` to apply 4 suggestions)
[INFO] [stderr] warning: `data_types` (bin "data_types" test) generated 5 warnings (run `cargo fix --bin "data_types" -p data_types --tests` to apply 4 suggestions)
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> traits/src/main.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl<T> Pair<T> {
[INFO] [stderr]    | --------------- associated function in this implementation
[INFO] [stderr] 46 |     fn new(x: T, y: T) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `message`
[INFO] [stderr]   --> enums/src/main.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let message = Message::Move { x: 4, y: 5 };
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_message`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]  --> enums/src/main.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 |     V4((u8, u8, u8, u8)),
[INFO] [stderr]   |     -- ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |     |
[INFO] [stderr]   |     field in this variant
[INFO] [stderr]   |
[INFO] [stderr]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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] 4 -     V4((u8, u8, u8, u8)),
[INFO] [stderr] 4 +     V4(()),
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] warning: variant `V6` is never constructed
[INFO] [stderr]  --> enums/src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | enum IpAddrKind
[INFO] [stderr]   |      ---------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 5 |     V6(String),
[INFO] [stderr]   |     ^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Quit` and `ChangeColor` are never constructed
[INFO] [stderr]   --> enums/src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | enum Message
[INFO] [stderr]    |      ------- variants in this enum
[INFO] [stderr] 11 | {
[INFO] [stderr] 12 |     Quit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 19 |     ChangeColor(i32, i32, i32),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `division` is never used
[INFO] [stderr]   --> enums/src/main.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn division(number: i32) -> Option<u32>
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `int_point`
[INFO] [stderr]   --> generics/src/main.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let int_point = Point { x: 5, y: 7 };
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_int_point`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `mode` is never used
[INFO] [stderr]   --> median/src/main.rs:19:4
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn mode(vec: &[i32]) -> i32
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `traits` (bin "traits" test) generated 1 warning
[INFO] [stderr] warning: `enums` (bin "enums" test) generated 5 warnings (run `cargo fix --bin "enums" -p enums --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `generics` (bin "generics" test) generated 1 warning (run `cargo fix --bin "generics" -p generics --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `median` (bin "median" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/adder-a3429d253fcc1091)
[INFO] [stdout] test tests::it_fails ... FAILED
[INFO] [stderr] error: test failed, to rerun pass `-p adder --lib`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::it_fails stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::it_fails' (24) panicked at adder/src/lib.rs:18:9:
[INFO] [stdout] Addition operation failed!
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x63da5ec786e2 - std::backtrace_rs::backtrace::libunwind::trace::hff358a60abf734fc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x63da5ec786e2 - std::backtrace_rs::backtrace::trace_unsynchronized::h3b121f916dd95ec6
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x63da5ec786e2 - std::sys::backtrace::_print_fmt::hde0a62ded68798e9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x63da5ec786e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h93773fc827e3113d
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x63da5ec8873a - core::fmt::rt::Argument::fmt::h01eff69902dad97f
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x63da5ec8873a - core::fmt::write::hed7b5c73d82ecb7c
[INFO] [stdout]    6:     0x63da5ec47426 - std::io::default_write_fmt::h2f696ff5b8bbaa4b
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x63da5ec47426 - std::io::Write::write_fmt::h5e66814db8a9cfce
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x63da5ec57bc9 - std::sys::backtrace::BacktraceLock::print::h8b1d6fcc5a56d1a3
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x63da5ec57bc9 - std::panicking::default_hook::{{closure}}::h2be84df4f189ae36
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x63da5ec57a61 - std::panicking::default_hook::hf0ea8939246f43a9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x63da5ec1c10e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h02d35e3888986252
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x63da5ec1c10e - test::test_main_with_exit_callback::{{closure}}::h939640a27d647173
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x63da5ec57e42 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hc9df09ff391af3e7
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x63da5ec57e42 - std::panicking::panic_with_hook::hb4bd9ac1123582a0
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x63da5ec57cba - std::panicking::panic_handler::{{closure}}::hde00dd15f5637fe2
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x63da5ec53219 - std::sys::backtrace::__rust_end_short_backtrace::hb72197fa777c1785
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x63da5ec3c25d - __rustc[4425a7e20b4c8619]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x63da5ec8fa4c - core::panicking::panic_fmt::ha59b517dd231f4da
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x63da5ebfceec - adder::tests::it_fails::h6bb9346aeb94e19c
[INFO] [stdout]                                at /opt/rustwide/workdir/adder/src/lib.rs:18:9
[INFO] [stdout]   20:     0x63da5ebfcf07 - adder::tests::it_fails::{{closure}}::h9917c2e5650b0ff5
[INFO] [stdout]                                at /opt/rustwide/workdir/adder/src/lib.rs:16:18
[INFO] [stdout]   21:     0x63da5ebfc796 - core::ops::function::FnOnce::call_once::h506d5157ab0ced57
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x63da5ec1becb - core::ops::function::FnOnce::call_once::hddb3cd395c36bfbb
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x63da5ec1becb - test::__rust_begin_short_backtrace::h0b6a7601d9750bfa
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:663:18
[INFO] [stdout]   24:     0x63da5ec2f8da - test::run_test_in_process::{{closure}}::h444209903f00b347
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:686:74
[INFO] [stdout]   25:     0x63da5ec2f8da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfb3ba8f46e537649
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   26:     0x63da5ec2f8da - std::panicking::catch_unwind::do_call::h1672a45911fcf9dc
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stdout]   27:     0x63da5ec2f8da - std::panicking::catch_unwind::h0fadaee22787a6dd
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x63da5ec2f8da - std::panic::catch_unwind::hc47ad190f2c8e188
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x63da5ec2f8da - test::run_test_in_process::hcd7faaf934f29999
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:686:27
[INFO] [stdout]   30:     0x63da5ec2f8da - test::run_test::{{closure}}::hddc4550da4871867
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:607:43
[INFO] [stdout]   31:     0x63da5ec09d34 - test::run_test::{{closure}}::h98ae26689f13ed94
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/test/src/lib.rs:637:41
[INFO] [stdout]   32:     0x63da5ec09d34 - std::sys::backtrace::__rust_begin_short_backtrace::h3ec4d1f21ad44588
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   33:     0x63da5ec0d6d2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd8bf2c73d479939f
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   34:     0x63da5ec0d6d2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h3b4248f358af2491
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   35:     0x63da5ec0d6d2 - std::panicking::catch_unwind::do_call::hda10a64f4b8daebe
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:581:40
[INFO] [stdout]   36:     0x63da5ec0d6d2 - std::panicking::catch_unwind::h659e5ee8336ec8c7
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panicking.rs:544:19
[INFO] [stdout]   37:     0x63da5ec0d6d2 - std::panic::catch_unwind::h9d4d66a538912c18
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x63da5ec0d6d2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h7557906bb51d79f1
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   39:     0x63da5ec0d6d2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h9e460d1d7fc83d35
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x63da5ec4e4af - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h61282da819d64ea9
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   41:     0x63da5ec4e4af - std::sys::thread::unix::Thread::new::thread_start::h982f9ea829d1b5fb
[INFO] [stdout]                                at /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   42:     0x7310506bfaa4 - <unknown>
[INFO] [stdout]   43:     0x73105074ca64 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::it_fails
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "18e2071c060a641d702dbde636517eeb6de1ed2a8c2bab731123802e24d1e0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e2071c060a641d702dbde636517eeb6de1ed2a8c2bab731123802e24d1e0eb", kill_on_drop: false }`
[INFO] [stdout] 18e2071c060a641d702dbde636517eeb6de1ed2a8c2bab731123802e24d1e0eb
