[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] checking phjorgensen/rust-experiments against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphjorgensen%2Frust-experiments" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/phjorgensen/rust-experiments on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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-7-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b728c2373717f5142670476ef2a1c3db923dfc09864af7e2f9b232cc1cc9d19a
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[INFO] running `Command { std: "docker" "inspect" "b728c2373717f5142670476ef2a1c3db923dfc09864af7e2f9b232cc1cc9d19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b728c2373717f5142670476ef2a1c3db923dfc09864af7e2f9b232cc1cc9d19a", kill_on_drop: false }`
[INFO] [stdout] b728c2373717f5142670476ef2a1c3db923dfc09864af7e2f9b232cc1cc9d19a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3b9ff6684e241a57b025de76edbadd37addf4242caafc2febc8cb80927a01e8
[INFO] running `Command { std: "docker" "start" "-a" "a3b9ff6684e241a57b025de76edbadd37addf4242caafc2febc8cb80927a01e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking 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::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::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: 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] [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: 19 warnings emitted
[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] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "a3b9ff6684e241a57b025de76edbadd37addf4242caafc2febc8cb80927a01e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b9ff6684e241a57b025de76edbadd37addf4242caafc2febc8cb80927a01e8", kill_on_drop: false }`
[INFO] [stdout] a3b9ff6684e241a57b025de76edbadd37addf4242caafc2febc8cb80927a01e8