[INFO] cloning repository https://github.com/grkw/gratie
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grkw/gratie" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrkw%2Fgratie", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrkw%2Fgratie'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1af341e192c607d5e39ab8e47781045b75c85fd9
[INFO] building grkw/gratie against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrkw%2Fgratie" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/grkw/gratie
[INFO] finished tweaking git repo https://github.com/grkw/gratie
[INFO] tweaked toml for git repo https://github.com/grkw/gratie written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/grkw/gratie on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/grkw/gratie 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d09c153e75603b7c2dcb0c347089ca5b70af7562910be8ba8348c08bb5ef4c97
[INFO] running `Command { std: "docker" "start" "-a" "d09c153e75603b7c2dcb0c347089ca5b70af7562910be8ba8348c08bb5ef4c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d09c153e75603b7c2dcb0c347089ca5b70af7562910be8ba8348c08bb5ef4c97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d09c153e75603b7c2dcb0c347089ca5b70af7562910be8ba8348c08bb5ef4c97", kill_on_drop: false }`
[INFO] [stdout] d09c153e75603b7c2dcb0c347089ca5b70af7562910be8ba8348c08bb5ef4c97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 900f490da69320734a14f69de9bd1f9e2dfb7662ce938fd25438c09cb5a706e8
[INFO] running `Command { std: "docker" "start" "-a" "900f490da69320734a14f69de9bd1f9e2dfb7662ce938fd25438c09cb5a706e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.89
[INFO] [stderr]    Compiling libc v0.2.167
[INFO] [stderr]    Compiling anyhow v1.0.93
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling rustix v0.38.42
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling fid-rs v0.1.1
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling av1-grain v0.2.3
[INFO] [stderr]    Compiling louds-rs v0.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling smawk v0.3.2
[INFO] [stderr]    Compiling thiserror v2.0.3
[INFO] [stderr]    Compiling unicode-linebreak v0.1.5
[INFO] [stderr]    Compiling clap_lex v0.7.3
[INFO] [stderr]    Compiling textwrap v0.15.2
[INFO] [stderr]    Compiling trie-rs v0.1.1
[INFO] [stderr]    Compiling clap_builder v4.5.21
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling shell-words v1.1.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling nix v0.23.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling fd-lock v3.0.13
[INFO] [stderr]    Compiling rustyline-derive v0.6.0
[INFO] [stderr]    Compiling rustyline v9.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling profiling-procmacros v1.0.16
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling thiserror-impl v2.0.3
[INFO] [stderr]    Compiling profiling v1.0.16
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling easy-repl v0.2.1
[INFO] [stderr]    Compiling clap v4.5.21
[INFO] [stderr]    Compiling ravif v0.11.11
[INFO] [stderr]    Compiling image v0.25.5
[INFO] [stderr]    Compiling gratie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::thread::current`
[INFO] [stdout]  --> src/interpreter.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::thread::current;
[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: `image::codecs::qoi`
[INFO] [stdout]  --> src/stack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::codecs::qoi;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stack::Stack`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use stack::Stack; // Brings the `Stack` struct into scope, so you can use `Stack` directly without needing to prefix it with `stack::`.
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `init_color`
[INFO] [stdout]   --> src/interpreter.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let init_color = grid.get_color(init_pos);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_init_color`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_char`
[INFO] [stdout]    --> src/stack.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn read_in(&mut self, is_char: bool) {
[INFO] [stdout]     |                               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_char`
[INFO] [stdout]    --> src/stack.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn write_out(&mut self, is_char: bool) {
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_rgb` is never used
[INFO] [stdout]   --> src/grid.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Color {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub(crate) fn get_rgb(e: &Color) -> Option<[u8; 3]> {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print` and `generate_image` are never used
[INFO] [stdout]    --> src/grid.rs:99:19
[INFO] [stdout]     |
[INFO] [stdout]  91 | impl Grid {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  99 |     pub(crate) fn print(&self) {
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     pub(crate) fn generate_image(&self, fname: &str, scale_factor: usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pos` is never read
[INFO] [stdout]   --> src/interpreter.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) struct Interpreter {
[INFO] [stdout]    |                   ----------- field in this struct
[INFO] [stdout] 15 |     pos: CodelIndex,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Interpreter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `step` is never used
[INFO] [stdout]   --> src/interpreter.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Interpreter {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn step() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/stack.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T: Integer + Copy + Debug> Stack<T> {
[INFO] [stdout]    | ---------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "900f490da69320734a14f69de9bd1f9e2dfb7662ce938fd25438c09cb5a706e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "900f490da69320734a14f69de9bd1f9e2dfb7662ce938fd25438c09cb5a706e8", kill_on_drop: false }`
[INFO] [stdout] 900f490da69320734a14f69de9bd1f9e2dfb7662ce938fd25438c09cb5a706e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6030a671511e3f87be90d019eca5202993a88e2dd94560c085e1561e3c6a7b1d
[INFO] running `Command { std: "docker" "start" "-a" "6030a671511e3f87be90d019eca5202993a88e2dd94560c085e1561e3c6a7b1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling gratie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Color`
[INFO] [stdout]    --> src/grid.rs:203:23
[INFO] [stdout]     |
[INFO] [stdout] 203 |     use crate::grid::{Color, Grid};
[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 imports: `io`, `path::PathBuf`, and `self`
[INFO] [stdout]    --> src/grid.rs:207:14
[INFO] [stdout]     |
[INFO] [stdout] 207 |         fs::{self, File},
[INFO] [stdout]     |              ^^^^
[INFO] [stdout] 208 |         io,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 209 |         path::PathBuf,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::current`
[INFO] [stdout]  --> src/interpreter.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::thread::current;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]    --> src/parsers.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         io,
[INFO] [stdout]     |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `image::codecs::qoi`
[INFO] [stdout]  --> src/stack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::codecs::qoi;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stack::Stack`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use stack::Stack; // Brings the `Stack` struct into scope, so you can use `Stack` directly without needing to prefix it with `stack::`.
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_char`
[INFO] [stdout]    --> src/stack.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn read_in(&mut self, is_char: bool) {
[INFO] [stdout]     |                               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_char`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parsers.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut paths = fs::read_dir(INVALID_TESTS_DIR)
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_char`
[INFO] [stdout]    --> src/stack.rs:111:33
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn write_out(&mut self, is_char: bool) {
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_char`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parsers.rs:151:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |         let mut paths = fs::read_dir(VALID_TESTS_DIR)
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `init_color`
[INFO] [stdout]   --> src/interpreter.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let init_color = grid.get_color(init_pos);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_init_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/grid.rs:99:19
[INFO] [stdout]    |
[INFO] [stdout] 91 | impl Grid {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 99 |     pub(crate) fn print(&self) {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pos` is never read
[INFO] [stdout]   --> src/interpreter.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) struct Interpreter {
[INFO] [stdout]    |                   ----------- field in this struct
[INFO] [stdout] 15 |     pos: CodelIndex,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Interpreter` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `step` is never used
[INFO] [stdout]   --> src/interpreter.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Interpreter {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn step() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/stack.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T: Integer + Copy + Debug> Stack<T> {
[INFO] [stdout]    | ---------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "6030a671511e3f87be90d019eca5202993a88e2dd94560c085e1561e3c6a7b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6030a671511e3f87be90d019eca5202993a88e2dd94560c085e1561e3c6a7b1d", kill_on_drop: false }`
[INFO] [stdout] 6030a671511e3f87be90d019eca5202993a88e2dd94560c085e1561e3c6a7b1d