[INFO] cloning repository https://github.com/phjorgensen/rust-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phjorgensen/rust-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphjorgensen%2Frust-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphjorgensen%2Frust-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7634600d3b8ecc0f1ffb62baacc27a484fa0ae7f
[INFO] building phjorgensen/rust-experiments against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphjorgensen%2Frust-experiments" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/phjorgensen/rust-experiments on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/phjorgensen/rust-experiments
[INFO] finished tweaking git repo https://github.com/phjorgensen/rust-experiments
[INFO] tweaked toml for git repo https://github.com/phjorgensen/rust-experiments written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/phjorgensen/rust-experiments 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 333803ff007eab5af25165f4868d4f439c1e9837e91c897c82441fb69eb2c436
[INFO] running `Command { std: "docker" "start" "-a" "333803ff007eab5af25165f4868d4f439c1e9837e91c897c82441fb69eb2c436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "333803ff007eab5af25165f4868d4f439c1e9837e91c897c82441fb69eb2c436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "333803ff007eab5af25165f4868d4f439c1e9837e91c897c82441fb69eb2c436", kill_on_drop: false }`
[INFO] [stdout] 333803ff007eab5af25165f4868d4f439c1e9837e91c897c82441fb69eb2c436
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7d730b16e1d14e69190e2cbf23a38184fa76713878511f79a2de8b65fb9c20a
[INFO] running `Command { std: "docker" "start" "-a" "d7d730b16e1d14e69190e2cbf23a38184fa76713878511f79a2de8b65fb9c20a", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling rust-typescript v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rust::add_one`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rust::add_one;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::borrow_checker`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rust::borrow_checker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::enums`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rust::enums;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::iterator`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rust::iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::optional`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rust::optional;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::optional_exersice`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rust::optional_exersice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::read_file`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rust::read_file;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::read_numbers`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rust::read_numbers;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `age` and `name` are never read
[INFO] [stdout]  --> src/rust/optional.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Custom {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 2 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     name: String,
[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/rust/optional.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     String(String),
[INFO] [stdout]   |     ------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[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 |     String(()),
[INFO] [stdout]   |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Number` and `MyCustom` are never constructed
[INFO] [stdout]  --> src/rust/optional.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Item {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 7 |     Number(usize),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     String(String),
[INFO] [stdout] 9 |     MyCustom(Custom),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ensure_number` is never used
[INFO] [stdout]   --> src/rust/optional.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn ensure_number(num: Option<usize>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_number` is never used
[INFO] [stdout]   --> src/rust/optional.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn handle_number(num: Option<usize>) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]  --> src/rust/borrow_checker.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Item {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_one` is never used
[INFO] [stdout]   --> src/rust/borrow_checker.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_one(item: &mut Item) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_all` is never used
[INFO] [stdout]   --> src/rust/borrow_checker.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn print_all(items: &Vec<Item>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_count` is never used
[INFO] [stdout]   --> src/rust/borrow_checker.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn add_to_count(mut item: Item, amount: usize) -> Item {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `collides` is never used
[INFO] [stdout]  --> src/rust/traits/shapes/collisions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Collidable<T> {
[INFO] [stdout]   |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4 |     fn collides(&self, others: &[T]) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     traits::main();
[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] 30 |     let _ = traits::main();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "d7d730b16e1d14e69190e2cbf23a38184fa76713878511f79a2de8b65fb9c20a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7d730b16e1d14e69190e2cbf23a38184fa76713878511f79a2de8b65fb9c20a", kill_on_drop: false }`
[INFO] [stdout] d7d730b16e1d14e69190e2cbf23a38184fa76713878511f79a2de8b65fb9c20a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35f34c0f1229fb9d5f355359e54541e7ff2744d804f81edcc26bd0f63ed3ce70
[INFO] running `Command { std: "docker" "start" "-a" "35f34c0f1229fb9d5f355359e54541e7ff2744d804f81edcc26bd0f63ed3ce70", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-typescript v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rust::add_one`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rust::add_one;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::borrow_checker`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rust::borrow_checker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::enums`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rust::enums;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::iterator`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rust::iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::optional`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rust::optional;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::optional_exersice`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rust::optional_exersice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::read_file`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rust::read_file;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rust::read_numbers`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rust::read_numbers;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `age` and `name` are never read
[INFO] [stdout]  --> src/rust/optional.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Custom {
[INFO] [stdout]   |        ------ fields in this struct
[INFO] [stdout] 2 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 3 |     name: String,
[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/rust/optional.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     String(String),
[INFO] [stdout]   |     ------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[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 |     String(()),
[INFO] [stdout]   |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Number` and `MyCustom` are never constructed
[INFO] [stdout]  --> src/rust/optional.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Item {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 7 |     Number(usize),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     String(String),
[INFO] [stdout] 9 |     MyCustom(Custom),
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ensure_number` is never used
[INFO] [stdout]   --> src/rust/optional.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn ensure_number(num: Option<usize>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_number` is never used
[INFO] [stdout]   --> src/rust/optional.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn handle_number(num: Option<usize>) -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]  --> src/rust/borrow_checker.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Item {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_one` is never used
[INFO] [stdout]   --> src/rust/borrow_checker.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn add_one(item: &mut Item) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_all` is never used
[INFO] [stdout]   --> src/rust/borrow_checker.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn print_all(items: &Vec<Item>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_to_count` is never used
[INFO] [stdout]   --> src/rust/borrow_checker.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn add_to_count(mut item: Item, amount: usize) -> Item {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `collides` is never used
[INFO] [stdout]  --> src/rust/traits/shapes/collisions.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Collidable<T> {
[INFO] [stdout]   |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 4 |     fn collides(&self, others: &[T]) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     traits::main();
[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] 30 |     let _ = traits::main();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "35f34c0f1229fb9d5f355359e54541e7ff2744d804f81edcc26bd0f63ed3ce70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f34c0f1229fb9d5f355359e54541e7ff2744d804f81edcc26bd0f63ed3ce70", kill_on_drop: false }`
[INFO] [stdout] 35f34c0f1229fb9d5f355359e54541e7ff2744d804f81edcc26bd0f63ed3ce70