[INFO] cloning repository https://github.com/Handy-caT/rust-sandbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Handy-caT/rust-sandbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5227c276de64a54996885db9e53b7bd2400c6ec
[INFO] testing Handy-caT/rust-sandbox against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Handy-caT/rust-sandbox on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Handy-caT/rust-sandbox
[INFO] finished tweaking git repo https://github.com/Handy-caT/rust-sandbox
[INFO] tweaked toml for git repo https://github.com/Handy-caT/rust-sandbox written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Handy-caT/rust-sandbox 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded duration-str v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9748e0ca4c4c94bf0b4464671d7966624ae3f54fc9f5e0d485bcc7bbc016b605
[INFO] running `Command { std: "docker" "start" "-a" "9748e0ca4c4c94bf0b4464671d7966624ae3f54fc9f5e0d485bcc7bbc016b605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9748e0ca4c4c94bf0b4464671d7966624ae3f54fc9f5e0d485bcc7bbc016b605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9748e0ca4c4c94bf0b4464671d7966624ae3f54fc9f5e0d485bcc7bbc016b605", kill_on_drop: false }`
[INFO] [stdout] 9748e0ca4c4c94bf0b4464671d7966624ae3f54fc9f5e0d485bcc7bbc016b605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42e4cdb06bbcdab5a1ab55798ddd8e394873cbb0b88e5b407ae74a6c17a12176
[INFO] running `Command { std: "docker" "start" "-a" "42e4cdb06bbcdab5a1ab55798ddd8e394873cbb0b88e5b407ae74a6c17a12176", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
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[INFO] [stderr]    Compiling memchr v2.6.3
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[INFO] [stderr]    Compiling time-macros v0.2.14
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]    Compiling openssl v0.10.62
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling ucd-trie v0.1.6
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[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling base64ct v1.6.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling rust-ini v0.17.0
[INFO] [stderr]    Compiling chrono v0.4.31
[INFO] [stderr]    Compiling password-hash v0.5.0
[INFO] [stderr]    Compiling predicates-tree v1.0.9
[INFO] [stderr]    Compiling tempfile v3.9.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling blake2 v0.10.6
[INFO] [stderr]    Compiling crossbeam-queue v0.3.10
[INFO] [stderr]    Compiling crossbeam-channel v0.5.10
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling unarray v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.10
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling fragile v2.0.0
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling keccak v0.1.4
[INFO] [stderr]    Compiling downcast v0.11.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling crossbeam v0.8.3
[INFO] [stderr]    Compiling argon2 v0.5.2
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling rand_hc v0.3.2
[INFO] [stderr]    Compiling step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch)
[INFO] [stderr]    Compiling step_1_9 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_9_phantom)
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v1.9.5
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl DynamicUserRepository {
[INFO] [stdout]   | -------------------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace)
[INFO] [stderr]    Compiling step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_7_sized/src/create_user.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl CreateUser {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_3 v0.1.0 (/opt/rustwide/workdir/4_backend/4_3_api)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4 v0.1.0 (/opt/rustwide/workdir/4_backend)
[INFO] [stderr]    Compiling step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl)
[INFO] [stderr]    Compiling step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell)
[INFO] [stderr]    Compiling step_4_1 v0.1.0 (/opt/rustwide/workdir/4_backend/4_1_db)
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> 1_concepts/1_3_rc_cell/src/stack.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl<T> GlobalStack<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 9  |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn push(&self, t: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn pop(&self) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates v2.1.5
[INFO] [stderr]    Compiling step_1 v0.1.0 (/opt/rustwide/workdir/1_concepts)
[INFO] [stderr]    Compiling step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety)
[INFO] [stdout] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stdout]  --> 1_concepts/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out)
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_5 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_5_exhaustivity)
[INFO] [stdout] warning: associated items `new`, `pop_node_left`, and `length` are never used
[INFO] [stdout]    --> 1_concepts/src/doubly_linked_list.rs:19:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl<T> DoublyLinkedList<T> {
[INFO] [stdout]     | --------------------------- associated items in this implementation
[INFO] [stdout] 19  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn length(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 1_concepts/src/parallel_list.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> ParallelDoublyLinkedList<T> {
[INFO] [stdout]    | ----------------------------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/post.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Post<Status> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     status: Status
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Post` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delete` is never used
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/post.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl Post<Published> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 61 |     fn delete(self) -> Post<Deleted> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_6 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_6_sealing)
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_7 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_7_rand_crypto)
[INFO] [stderr]    Compiling step_4_2 v0.1.0 (/opt/rustwide/workdir/4_backend/4_2_http)
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy)
[INFO] [stderr]    Compiling step_3_5 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_5_collections)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem)
[INFO] [stdout] warning: variants `One`, `Two`, `Five`, `Ten`, `Twenty`, and `Fifty` are never constructed
[INFO] [stdout]  --> 2_idioms/src/coin/coin.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Coin {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     One(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     Two(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     Five(),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     Ten(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Twenty(),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Fifty(),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Coin` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coin {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     state: State,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `product` and `coins` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, State> ProductRequest<'a, State> {
[INFO] [stdout]    | ----------------------------------------- methods in this implementation
[INFO] [stdout] 12 |     pub fn product(&self) -> &Product<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn coins(&self) -> &[Coin] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `check_availability` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> ProductRequest<'a, Created> {
[INFO] [stdout]    | ------------------------------------ associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(product: Product<'a>, coins: Vec<Coin>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn check_availability(self) -> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `deny` and `check_payment` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    | ------------------------------------------------ methods in this implementation
[INFO] [stdout] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn check_payment(self) -> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `deny` and `accept` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    | ------------------------------------------- methods in this implementation
[INFO] [stdout] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn accept(self) -> ProductRequest<'a, Accepted> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/product.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl<'a> Product<'a> {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 24 |     pub fn new<S: Into<Cow<'a, str>>>(name: S, price: Price) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VendingMachine` is never constructed
[INFO] [stdout]   --> 2_idioms/src/machine/vending_machine.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct VendingMachine<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:24:12
[INFO] [stdout]     |
[INFO] [stdout] 23  | impl<'a> VendingMachine<'a> {
[INFO] [stdout]     | --------------------------- associated items in this implementation
[INFO] [stdout] 24  |     pub fn new(max_capacity: u8) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41  |     pub fn add_product(&mut self, product: Product<'a>, quantity: Quantity) -> Result<(), VendingError> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61  |     pub fn max_capacity(&self) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65  |     fn add_coins(&mut self, coins: &[Coin]) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     fn delete_coins(&mut self, coins: &[Coin]) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     fn add_coin_count(&mut self, coin: Coin, count: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |     fn check_availability(&self, product: &Product) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |     fn get_price_products(products: &HashMap<Product, (Price, Quantity)>, product: &Product<'a>) -> Result<Price, VendingError<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 92  |     pub fn get_price(&self, product: &Product<'a>) -> Result<Price, VendingError> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn get_products(&self) -> Vec<Product> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn give_product(&mut self, product: &Product<'a>) -> Result<(), VendingError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn buy_product(&mut self, product: &Product<'a>, coins: Vec<Coin>) -> Result<(Product<'a>, Vec<Coin>), (VendingError, Vec<Coin>)> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_sum` is never used
[INFO] [stdout]  --> 2_idioms/src/machine/change_counter.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn count_sum(coins: &[Coin]) -> u16 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_nearest` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/change_counter.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn find_nearest(purse: &HashMap<Coin, u8>, amount: u16) -> Option<Coin> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_counter` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/change_counter.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn change_counter(purse: &HashMap<Coin, u8>, change_amount: u16) -> Option<Vec<Coin>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ProductNotFound`, `NotEnoughMoney`, `BadPrice`, `NotEnoughChange`, and `NotEnoughCapacity` are never constructed
[INFO] [stdout]   --> 2_idioms/src/machine/error/vending_error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum VendingError<'a> {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 10 |     ProductNotFound(ProductNotFound<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     NotEnoughMoney(NotEnoughMoney<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     BadPrice(BadPrice<'a>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     NotEnoughChange(NotEnoughChange),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     NotEnoughCapacity(NotEnoughCapacity),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_money.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<'a> NotEnoughMoney<'a> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(price: u16, product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/bad_price.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<'a> BadPrice<'a> {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(price: u16, product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_capacity.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl NotEnoughCapacity {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(capacity: u16, needed: u16) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/product_not_found.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<'a> ProductNotFound<'a> {
[INFO] [stdout]    | ---------------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_change.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl NotEnoughChange {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 20 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `PasswordHash`
[INFO] [stdout]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stdout]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_8 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_8_thread_safety)
[INFO] [stdout] warning: unused imports: `OrdMap`, `Vector`
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OnlySend` is never constructed
[INFO] [stdout]  --> 1_concepts/1_8_thread_safety/src/types.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct OnlySend<T>
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct NotSyncNotSend<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get` are never used
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&self) -> &T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SyncAndSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct SyncAndSend {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct SyncAndNotSend {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 33 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SyncAndNotSend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_user` are never used
[INFO] [stdout]   --> 3_ecosystem/3_5_collections/src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl VecUserRepository {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn add_user(&mut self, user: User) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proptest v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling smart-default v0.7.1
[INFO] [stderr]    Compiling step_3_10 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_10_threads)
[INFO] [stdout] warning: unused variable: `handles`
[INFO] [stdout]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let handles = (0..2).map(|i| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling my_proc_macros_lib v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro/my_proc_macros_lib)
[INFO] [stderr]    Compiling step_1_5 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_5_convert_cast_deref)
[INFO] [stderr]    Compiling step_3_4 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_4_regex_parsing)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_that_use_str` is never used
[INFO] [stdout]   --> 1_concepts/1_5_convert_cast_deref/src/email_string.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn fn_that_use_str(s: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Random<T> {
[INFO] [stdout]   | ----------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `captures`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     Some(captures) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             input = input_next;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl RegexParser {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 61 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 199 | impl NomParser {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 200 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_2 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro)
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut map = btreemap! (
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio v1.32.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pest v2.7.6
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling pin-project v1.1.3
[INFO] [stderr]    Compiling clap v4.4.2
[INFO] [stderr]    Compiling step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow)
[INFO] [stderr]    Compiling pest_meta v2.7.6
[INFO] [stderr]    Compiling mockall v0.11.4
[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stderr]    Compiling step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.3.22
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling deranged v0.3.8
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling ron v0.7.1
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling json5 v0.4.1
[INFO] [stderr]    Compiling humantime-serde v1.1.1
[INFO] [stderr]    Compiling secrecy v0.8.0
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling serde_yaml v0.9.30
[INFO] [stderr]    Compiling time v0.3.28
[INFO] [stderr]    Compiling config v0.12.0
[INFO] [stderr]    Compiling step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/base_struct.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(x: i32, y: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Poll` that must be used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         self.poll(&mut cx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Poll` may be a `Pending` 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] 15 |         let _ = self.poll(&mut cx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling duration-str v0.5.1
[INFO] [stderr]    Compiling hyper v0.14.28
[INFO] [stderr]    Compiling step_3_6 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_6_serde)
[INFO] [stderr]    Compiling step_3_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_3_date_time)
[INFO] [stderr]    Compiling step_3_9 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_9_cmd_env_conf)
[INFO] [stdout] warning: constant `NOW` is never used
[INFO] [stdout]   --> 3_ecosystem/3_3_date_time/src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const NOW: &str = "2019-06-26";
[INFO] [stdout]    |       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_3_date_time/src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct User
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_birthdate`, `age`, and `is_adult` are never used
[INFO] [stdout]   --> 3_ecosystem/3_3_date_time/src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl User {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 19 |     fn with_birthdate(year: i32, month: u32, day: u32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn age(&self) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn is_adult(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Parser`
[INFO] [stdout]  --> 3_ecosystem/3_9_cmd_env_conf/src/main.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{arg, command, Parser, value_parser};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Date`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use time::{Date, OffsetDateTime};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml::value::Datetime`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use toml::value::Datetime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_8 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_8_log)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> 3_ecosystem/3_8_log/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.23
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_11 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_11_async)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.55s
[INFO] running `Command { std: "docker" "inspect" "42e4cdb06bbcdab5a1ab55798ddd8e394873cbb0b88e5b407ae74a6c17a12176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42e4cdb06bbcdab5a1ab55798ddd8e394873cbb0b88e5b407ae74a6c17a12176", kill_on_drop: false }`
[INFO] [stdout] 42e4cdb06bbcdab5a1ab55798ddd8e394873cbb0b88e5b407ae74a6c17a12176
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 722c952e37ad2171397a665cfa9849e488c20a22f1a43431aca04e38c64accb4
[INFO] running `Command { std: "docker" "start" "-a" "722c952e37ad2171397a665cfa9849e488c20a22f1a43431aca04e38c64accb4", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl DynamicUserRepository {
[INFO] [stdout]   | -------------------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized)
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_5 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_5_collections)
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_10 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_10_threads)
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_4 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_4_regex_parsing)
[INFO] [stderr]    Compiling step_1_5 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_5_convert_cast_deref)
[INFO] [stderr]    Compiling step_1_9 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_9_phantom)
[INFO] [stderr]    Compiling step_4 v0.1.0 (/opt/rustwide/workdir/4_backend)
[INFO] [stderr]    Compiling step_4_3 v0.1.0 (/opt/rustwide/workdir/4_backend/4_3_api)
[INFO] [stderr]    Compiling step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms)
[INFO] [stderr]    Compiling step_3_7 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_7_rand_crypto)
[INFO] [stderr]    Compiling step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl)
[INFO] [stderr]    Compiling step_1 v0.1.0 (/opt/rustwide/workdir/1_concepts)
[INFO] [stderr]    Compiling step_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem)
[INFO] [stderr]    Compiling step_1_8 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_8_thread_safety)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Random<T> {
[INFO] [stdout]   | ----------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handles`
[INFO] [stdout]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let handles = (0..2).map(|i| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OrdMap`, `Vector`
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `PasswordHash`
[INFO] [stdout]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stdout]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SyncAndNotSend`
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:42:34
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use crate::types::{OnlySend, SyncAndNotSend, SyncAndSend};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stdout]  --> 1_concepts/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]    --> 1_concepts/src/real_parallel_list.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     use std::thread::sleep;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `captures`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     Some(captures) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct NotSyncNotSend<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get` are never used
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&self) -> &T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct SyncAndNotSend {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 33 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SyncAndNotSend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             input = input_next;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:619:14
[INFO] [stdout]     |
[INFO] [stdout] 619 |         let (input, precision) = result.unwrap();
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]    --> 3_ecosystem/3_5_collections/src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let user2 = User {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `pop_node_left` is never used
[INFO] [stdout]   --> 1_concepts/src/doubly_linked_list.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> DoublyLinkedList<T> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coin {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     state: State,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deny` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deny` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         vending_machine.add_product(product, Quantity(5));
[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] 179 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         vending_machine.add_product(product, Quantity(5));
[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] 188 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |         vending_machine.add_product(product, Quantity(5));
[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] 202 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 235 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 248 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 259 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 259 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 284 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 305 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 327 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety)
[INFO] [stderr]    Compiling step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch)
[INFO] [stderr]    Compiling step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace)
[INFO] [stderr]    Compiling step_2_6 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_6_sealing)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_2 v0.1.0 (/opt/rustwide/workdir/4_backend/4_2_http)
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling step_2_5 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_5_exhaustivity)
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out)
[INFO] [stderr]    Compiling step_4_1 v0.1.0 (/opt/rustwide/workdir/4_backend/4_1_db)
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling my_proc_macros_lib v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro/my_proc_macros_lib)
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling smart-default v0.7.1
[INFO] [stderr]    Compiling step_3_2 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut map = btreemap! (
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling openssl v0.10.62
[INFO] [stderr]    Compiling tokio v1.32.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling pest v2.7.6
[INFO] [stderr]    Compiling pin-project v1.1.3
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling mockall v0.11.4
[INFO] [stderr]    Compiling step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v4.4.2
[INFO] [stderr]    Compiling step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow)
[INFO] [stderr]    Compiling pest_meta v2.7.6
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.3.22
[INFO] [stderr]    Compiling deranged v0.3.8
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling ron v0.7.1
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling json5 v0.4.1
[INFO] [stderr]    Compiling humantime-serde v1.1.1
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling secrecy v0.8.0
[INFO] [stderr]    Compiling serde_yaml v0.9.30
[INFO] [stderr]    Compiling config v0.12.0
[INFO] [stderr]    Compiling time v0.3.28
[INFO] [stderr]    Compiling step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin)
[INFO] [stdout] warning: unused import: `MutMeSomehow`
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:25:36
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use crate::pins::base_traits::{MutMeSomehow, SayHi};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/future.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut fut = MeasurableFuture {
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Poll` that must be used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         self.poll(&mut cx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Poll` may be a `Pending` 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] 15 |         let _ = self.poll(&mut cx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling duration-str v0.5.1
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling hyper v0.14.28
[INFO] [stderr]    Compiling step_3_6 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_6_serde)
[INFO] [stderr]    Compiling step_3_9 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_9_cmd_env_conf)
[INFO] [stderr]    Compiling step_3_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_3_date_time)
[INFO] [stdout] warning: unused import: `Parser`
[INFO] [stdout]  --> 3_ecosystem/3_9_cmd_env_conf/src/main.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{arg, command, Parser, value_parser};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Date`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use time::{Date, OffsetDateTime};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml::value::Datetime`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use toml::value::Datetime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_8 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_8_log)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> 3_ecosystem/3_8_log/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.23
[INFO] [stderr]    Compiling step_3_11 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_11_async)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 21.99s
[INFO] running `Command { std: "docker" "inspect" "722c952e37ad2171397a665cfa9849e488c20a22f1a43431aca04e38c64accb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "722c952e37ad2171397a665cfa9849e488c20a22f1a43431aca04e38c64accb4", kill_on_drop: false }`
[INFO] [stdout] 722c952e37ad2171397a665cfa9849e488c20a22f1a43431aca04e38c64accb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 54f1e42ef207a6eaacfd4a14a7c08a84d38a1ab96450c7788e950b296c51c268
[INFO] running `Command { std: "docker" "start" "-a" "54f1e42ef207a6eaacfd4a14a7c08a84d38a1ab96450c7788e950b296c51c268", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: unused import: `crate::user::User`
[INFO] [stderr]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::user::User;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | impl DynamicUserRepository {
[INFO] [stderr]   | -------------------------- associated function in this implementation
[INFO] [stderr] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `step_1_6` (lib) generated 2 warnings (run `cargo fix --lib -p step_1_6` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::any::TypeId;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stderr]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `step_2_6` (lib) generated 2 warnings (run `cargo fix --lib -p step_2_6` to apply 2 suggestions)
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 name,
[INFO] [stderr]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error`, `PasswordHash`
[INFO] [stderr]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stderr]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Parser`
[INFO] [stderr]  --> 3_ecosystem/3_9_cmd_env_conf/src/main.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 | use clap::{arg, command, Parser, value_parser};
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Date`
[INFO] [stderr]  --> 3_ecosystem/3_6_serde/src/debug.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | use time::{Date, OffsetDateTime};
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `toml::value::Datetime`
[INFO] [stderr]  --> 3_ecosystem/3_6_serde/src/debug.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use toml::value::Datetime;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handles`
[INFO] [stderr]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let handles = (0..2).map(|i| {
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MutMeSomehow`
[INFO] [stderr]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:25:36
[INFO] [stderr]    |
[INFO] [stderr] 25 |     use crate::pins::base_traits::{MutMeSomehow, SayHi};
[INFO] [stderr]    |                                    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> 1_concepts/1_2_box_pin/src/pins/future.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut fut = MeasurableFuture {
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Poll` that must be used
[INFO] [stderr]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         self.poll(&mut cx);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Poll` may be a `Pending` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let _ = self.poll(&mut cx);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> 3_ecosystem/3_8_log/src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OrdMap`, `Vector`
[INFO] [stderr]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]    --> 3_ecosystem/3_5_collections/src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let user2 = User {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut map = btreemap! (
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `step_2_5` (lib) generated 11 warnings (run `cargo fix --lib -p step_2_5` to apply 11 suggestions)
[INFO] [stderr] warning: `step_3_7` (bin "step_3_7" test) generated 1 warning (run `cargo fix --bin "step_3_7" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_9` (bin "step_3_9" test) generated 1 warning (run `cargo fix --bin "step_3_9" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_1` (bin "step_3_1" test) generated 1 warning (run `cargo fix --bin "step_3_1" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_6` (bin "step_3_6" test) generated 2 warnings (run `cargo fix --bin "step_3_6" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_3_10` (bin "step_3_10" test) generated 1 warning (run `cargo fix --bin "step_3_10" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_1_2` (bin "step_1_2" test) generated 3 warnings (run `cargo fix --bin "step_1_2" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_3_8` (bin "step_3_8" test) generated 1 warning (run `cargo fix --bin "step_3_8" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_5` (bin "step_3_5" test) generated 2 warnings (run `cargo fix --bin "step_3_5" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_3_2` (bin "step_3_2" test) generated 1 warning (run `cargo fix --bin "step_3_2" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `captures`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stderr]     |
[INFO] [stderr] 111 |                     Some(captures) => {
[INFO] [stderr]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     Err(err) => {
[INFO] [stderr]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stderr]     |
[INFO] [stderr] 294 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `input` is never read
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stderr]     |
[INFO] [stderr] 375 |             input = input_next;
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:619:14
[INFO] [stderr]     |
[INFO] [stderr] 619 |         let (input, precision) = result.unwrap();
[INFO] [stderr]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | impl<T> Random<T> {
[INFO] [stderr]   | ----------------- associated function in this implementation
[INFO] [stderr] 9 |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stderr]   |            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SyncAndNotSend`
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 42 |     use crate::types::{OnlySend, SyncAndNotSend, SyncAndSend};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct NotSyncNotSend<T> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `get` are never used
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stderr]    | -------------------------- associated items in this implementation
[INFO] [stderr] 15 |     fn new(value: T) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 21 |     fn get(&self) -> &T {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct SyncAndNotSend {
[INFO] [stderr]    |        -------------- field in this struct
[INFO] [stderr] 33 |     value: u32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SyncAndNotSend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stderr]  --> 1_concepts/src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]    --> 1_concepts/src/real_parallel_list.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     use std::thread::sleep;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `pop_node_left` is never used
[INFO] [stderr]   --> 1_concepts/src/doubly_linked_list.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<T> DoublyLinkedList<T> {
[INFO] [stderr]    | --------------------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 75 |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `step_3_4` (bin "step_3_4" test) generated 5 warnings (run `cargo fix --bin "step_3_4" --tests` to apply 4 suggestions)
[INFO] [stderr] warning: `step_1_5` (bin "step_1_5" test) generated 3 warnings (run `cargo fix --bin "step_1_5" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_1_8` (bin "step_1_8" test) generated 4 warnings (run `cargo fix --bin "step_1_8" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_2_5` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr] warning: `step_1_6` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `step_1` (bin "step_1" test) generated 4 warnings (run `cargo fix --bin "step_1" --tests` to apply 3 suggestions)
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl Coin {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `state` is never read
[INFO] [stderr]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stderr]   |            -------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 8 |     state: State,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `deny` is never used
[INFO] [stderr]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stderr]    | ------------------------------------------------ method in this implementation
[INFO] [stderr] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `deny` is never used
[INFO] [stderr]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stderr]    | ------------------------------------------- method in this implementation
[INFO] [stderr] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:179:9
[INFO] [stderr]     |
[INFO] [stderr] 179 |         vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         vending_machine.add_product(product, Quantity(5));
[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] 188 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:202:9
[INFO] [stderr]     |
[INFO] [stderr] 202 |         vending_machine.add_product(product, Quantity(5));
[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] 202 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 235 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:248:9
[INFO] [stderr]     |
[INFO] [stderr] 248 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 248 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:259:9
[INFO] [stderr]     |
[INFO] [stderr] 259 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 259 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 284 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:305:9
[INFO] [stderr]     |
[INFO] [stderr] 305 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 305 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 327 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `step_2` (bin "step_2" test) generated 13 warnings
[INFO] [stderr] warning: `step_2_6` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/my_proc_macros_lib-cf6677d45ec03dd8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-051ef53a5d310816)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1-0b70e1f69e906278)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_get ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_new ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_new_head ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_clear ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_pop_head ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_pop_tail ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_push ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_update_head ... ok
[INFO] [stdout] test list_node::tests::test_list_node ... ok
[INFO] [stdout] test parallel_list::tests::test_parallel_doubly_linked_list ... ok
[INFO] [stdout] test parallel_list::tests::test_parallel_doubly_linked_list_push ... ok
[INFO] [stdout] test parallel_list::tests::test_parallel_doubly_linked_list_push_parallel ... ok
[INFO] [stdout] test parallel_node::tests::test_parallel_node ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_pop ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_push ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_push_parallel ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_pop_parallel ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_many ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_1-a855c8a90b9965a6)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test structs::point::tests::test_point_copy ... ok
[INFO] [stdout] test structs::point::tests::test_point_default ... ok
[INFO] [stdout] test structs::point::tests::test_point_new ... ok
[INFO] [stdout] test structs::point::tests::test_point_clone ... ok
[INFO] [stdout] test structs::polyline::tests::test_polyline_clone ... ok
[INFO] [stdout] test structs::polyline::tests::test_polyline_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_2-6f301e79dba71f1c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test pins::generic::t_pin::tests::test_point_hi ... ok
[INFO] [stdout] test pins::future::tests::test_future ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_3-0f4a3a61d186f74d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test stack::tests::test_global_stack ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_4-75be901e23343f68)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_5-cab3b65d4831149c)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test email_string::tests::test_email_string_borrow ... ok
[INFO] [stdout] test email_string::tests::test_email_string_as_ref ... ok
[INFO] [stdout] test email_string::tests::test_email_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_1_6-b63abe50b439faff)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test dynamic::tests::test_user_repository ... ok
[INFO] [stdout] test r#static::tests::test_user_repository ... ok
[INFO] [stdout] test user::tests::test_user ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_7-55e5ec8d01e25e59)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test user_command_handler::tests::test_user_repository ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_8-d38641aa5bec7823)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test types::tests::test_only_send ... ok
[INFO] [stdout] test types::tests::test_sync_and_send ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_9-807b5ce0d7b6fadb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2-b48b15f19663e204)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test machine::change_counter::tests::test_change_counter ... ok
[INFO] [stdout] test machine::change_counter::tests::test_find_nearest ... ok
[INFO] [stdout] test machine::change_counter::tests::test_change_counter_no_change ... ok
[INFO] [stdout] test machine::change_counter::tests::test_change_counter_little ... ok
[INFO] [stdout] test machine::change_counter::tests::test_find_nearest_none ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_coin_count ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_coins ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_product ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_product_bad_price ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_product_not_enough_capacity ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_buy_product_no_product ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_buy_product_ok ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_delete_coins ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_buy_product_ok_more_coins ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_check_availability ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_get_price ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_get_products ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_1-8f06c033934d0b2c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test post::tests::test_post_actions_allow ... ok
[INFO] [stdout] test post::tests::test_post_actions_deny ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_2-e1833896d5257632)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_3-2b8e736313e33b1b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_4-288333d2afa10593)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test server_spec::bind::test_error ... ok
[INFO] [stdout] test server_spec::bind::sets_provided_address_to_server ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_2_5-604ada966cc41cbf)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_2_6-3a8b0256c3b905bf)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3-21233ac5258f8e9c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_1-453582bcb9653ea1)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::test_get_guess_number_not_a_number ... ok
[INFO] [stdout] test tests::test_get_guess_number_negative_number ... ok
[INFO] [stdout] test tests::test_guess_loop_bigger ... ok
[INFO] [stdout] test tests::test_guess_loop_not_a_number ... ok
[INFO] [stdout] test tests::test_guess_loop_equal ... ok
[INFO] [stdout] test tests::test_guess_loop_smaller ... ok
[INFO] [stdout] test tests::test_get_guess_number_positive_number ... ok
[INFO] [stdout] test tests::test_get_secret_number_positive_number ... ok
[INFO] [stdout] test tests::test_get_secret_number_negative_number - should panic ... ok
[INFO] [stdout] test tests::test_get_secret_number_not_a_number - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_10-c4c0b83ff0659ac6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_11-20caac10b9244df6)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_2-3de394c2009884a1)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_3-bed90fd7553269d0)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test age_spec::counts_age ... ok
[INFO] [stdout] test age_spec::adult_check ... ok
[INFO] [stdout] test age_spec::zero_if_birthdate_in_future ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_4-ce8bb31c30bc0be9)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test spec::test_parse_align_nom ... ok
[INFO] [stdout] test spec::test_parse_grid_nom ... ok
[INFO] [stdout] test spec::test_parse_nom_full ... ok
[INFO] [stdout] test spec::test_parse_sign_nom ... ok
[INFO] [stdout] test spec::test_parse_regex_argument ... ok
[INFO] [stdout] test spec::parses_sign ... ok
[INFO] [stdout] test spec::parses_precision ... ok
[INFO] [stdout] test spec::test_parse_regex_sign ... ok
[INFO] [stdout] test spec::test_parse_regex_identifier ... ok
[INFO] [stdout] test spec::test_parse_regex_integer ... ok
[INFO] [stdout] test spec::test_parse_regex_precision ... ok
[INFO] [stdout] test spec::test_parse_regex_count ... ok
[INFO] [stdout] test spec::test_parse_regex_full ... ok
[INFO] [stdout] test spec::parses_width ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_5-ed4082ddf1c22f64)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::test_user_repo_get_by_id_not_exists ... ok
[INFO] [stdout] test tests::test_user_repo_get_by_id_exists ... ok
[INFO] [stdout] test tests::test_user_repo_get_by_ids_exist ... ok
[INFO] [stdout] test tests::test_user_repo_search_contain_nickname_exist ... ok
[INFO] [stdout] test tests::test_user_repo_new ... ok
[INFO] [stdout] test tests::test_user_repo_search_contain_nickname_not_exist ... ok
[INFO] [stdout] test tests::test_user_repo_get_by_ids_not_exist ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_6-cd00843f2e8cf0fe)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test gift::tests::gift_parse ... ok
[INFO] [stdout] test private_tariff::tests::private_tariff_parse ... ok
[INFO] [stdout] test debug::tests::debug_parse ... ok
[INFO] [stdout] test public_tariff::tests::public_tariff_parse ... ok
[INFO] [stdout] test request::tests::type_parse ... ok
[INFO] [stdout] test request::tests::request_parse ... ok
[INFO] [stdout] test stream::tests::stream_parse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_7-86b4b73885286833)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_8-917496d1dead4e22)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_9-326db4faea657bf7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4-674367e37dc16067)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4_1-de986de37659b84a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4_2-b91742c3681201bd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4_3-9b9b4099154f38e7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests my_proc_macros_lib
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests step_1_6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests step_2_5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests step_2_6
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_error.rs - my_error::MyError (line 14) - compile fail ... ok
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt (line 23) - compile fail ... ok
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format (line 44) ... FAILED
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format_with (line 72) ... FAILED
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_error.rs - my_error::MyError::source (line 38) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format (line 44) stdout ----
[INFO] [stdout] error[E0599]: no method named `format` found for struct `std::slice::Iter` in the current scope
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/my_iterator_ext.rs:50:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     format!("{:.2}", data.iter().format(", ")),
[INFO] [stdout]   |                                  ^^^^^^ method not found in `Iter<'_, {float}>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format_with (line 72) stdout ----
[INFO] [stdout] error[E0599]: no method named `format_with` found for struct `std::slice::Iter` in the current scope
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/my_iterator_ext.rs:77:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | let data_formatter = data.iter().format_with(", ", |elt, f| f(&format_args!("{:.2}", elt)));
[INFO] [stdout]   |                                  ^^^^^^^^^^^ method not found in `Iter<'_, {float}>`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `format_with` found for struct `std::slice::Iter` in the current scope
[INFO] [stdout]   --> 2_idioms/2_6_sealing/src/my_iterator_ext.rs:84:38
[INFO] [stdout]    |
[INFO] [stdout] 15 | let matrix_formatter = matrix.iter().format_with("\n", |row, f| {
[INFO] [stdout]    |                        --------------^^^^^^^^^^^ method not found in `Iter<'_, [{float}; 3]>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format (line 44)
[INFO] [stdout]     2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format_with (line 72)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `-p step_2_6 --doc`
[INFO] running `Command { std: "docker" "inspect" "54f1e42ef207a6eaacfd4a14a7c08a84d38a1ab96450c7788e950b296c51c268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54f1e42ef207a6eaacfd4a14a7c08a84d38a1ab96450c7788e950b296c51c268", kill_on_drop: false }`
[INFO] [stdout] 54f1e42ef207a6eaacfd4a14a7c08a84d38a1ab96450c7788e950b296c51c268
[INFO] testing Handy-caT/rust-sandbox against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHandy-caT%2Frust-sandbox" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Handy-caT/rust-sandbox on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Handy-caT/rust-sandbox
[INFO] finished tweaking git repo https://github.com/Handy-caT/rust-sandbox
[INFO] tweaked toml for git repo https://github.com/Handy-caT/rust-sandbox written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Handy-caT/rust-sandbox 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2301c6ed881b44e722246841394f85c80fc40dfa965ee7e662fe71c3879bfcc
[INFO] running `Command { std: "docker" "start" "-a" "e2301c6ed881b44e722246841394f85c80fc40dfa965ee7e662fe71c3879bfcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2301c6ed881b44e722246841394f85c80fc40dfa965ee7e662fe71c3879bfcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2301c6ed881b44e722246841394f85c80fc40dfa965ee7e662fe71c3879bfcc", kill_on_drop: false }`
[INFO] [stdout] e2301c6ed881b44e722246841394f85c80fc40dfa965ee7e662fe71c3879bfcc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 141a56a3e9386261cc41ee40acea992ad0d818999e7f395a3ebe0a12b5056f90
[INFO] running `Command { std: "docker" "start" "-a" "141a56a3e9386261cc41ee40acea992ad0d818999e7f395a3ebe0a12b5056f90", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling memchr v2.6.3
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling tracing-core v0.1.31
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling pkg-config v0.3.28
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling bitflags v2.4.1
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling time-core v0.1.1
[INFO] [stderr]    Compiling time-macros v0.2.14
[INFO] [stderr]    Compiling openssl v0.10.62
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling aho-corasick v1.0.5
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling http v0.2.11
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.2
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.14
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling clap_lex v0.5.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling anstream v0.5.0
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.17
[INFO] [stderr]    Compiling linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling ahash v0.4.8
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.4
[INFO] [stderr]    Compiling clap_builder v4.4.2
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling predicates-core v1.0.6
[INFO] [stderr]    Compiling winnow v0.5.32
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling rust_decimal v1.33.1
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling socket2 v0.5.3
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling mio v0.8.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling regex-automata v0.3.8
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling termtree v0.4.1
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling base64ct v1.6.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling iana-time-zone v0.1.59
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling openssl-sys v0.9.98
[INFO] [stderr]    Compiling password-hash v0.5.0
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling chrono v0.4.31
[INFO] [stderr]    Compiling dlv-list v0.2.3
[INFO] [stderr]    Compiling sized-chunks v0.6.5
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling tempfile v3.9.0
[INFO] [stderr]    Compiling ordered-multimap v0.3.1
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling predicates-tree v1.0.9
[INFO] [stderr]    Compiling rust-ini v0.17.0
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling blake2 v0.10.6
[INFO] [stderr]    Compiling crossbeam-channel v0.5.10
[INFO] [stderr]    Compiling crossbeam-queue v0.3.10
[INFO] [stderr]    Compiling tracing-log v0.1.3
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling fragile v2.0.0
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling downcast v0.11.0
[INFO] [stderr]    Compiling cpufeatures v0.2.12
[INFO] [stderr]    Compiling keccak v0.1.4
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.10
[INFO] [stderr]    Compiling zeroize v1.7.0
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling unarray v0.1.4
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling argon2 v0.5.2
[INFO] [stderr]    Compiling crossbeam v0.8.3
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling rand_hc v0.3.2
[INFO] [stderr]    Compiling regex v1.9.5
[INFO] [stderr]    Compiling step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch)
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_9 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_9_phantom)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl DynamicUserRepository {
[INFO] [stdout]   | -------------------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_1 v0.1.0 (/opt/rustwide/workdir/4_backend/4_1_db)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_7_sized/src/create_user.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl CreateUser {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4 v0.1.0 (/opt/rustwide/workdir/4_backend)
[INFO] [stderr]    Compiling step_2_6 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_6_sealing)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates v2.1.5
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_2 v0.1.0 (/opt/rustwide/workdir/4_backend/4_2_http)
[INFO] [stderr]    Compiling step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms)
[INFO] [stderr]    Compiling step_1_8 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_8_thread_safety)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_5 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_5_exhaustivity)
[INFO] [stdout] warning: struct `OnlySend` is never constructed
[INFO] [stdout]  --> 1_concepts/1_8_thread_safety/src/types.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct OnlySend<T>
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct NotSyncNotSend<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get` are never used
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&self) -> &T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SyncAndSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct SyncAndSend {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct SyncAndNotSend {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 33 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SyncAndNotSend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `One`, `Two`, `Five`, `Ten`, `Twenty`, and `Fifty` are never constructed
[INFO] [stdout]  --> 2_idioms/src/coin/coin.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Coin {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 3 |     One(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     Two(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     Five(),
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     Ten(),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Twenty(),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Fifty(),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Coin` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coin {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     state: State,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `product` and `coins` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a, State> ProductRequest<'a, State> {
[INFO] [stdout]    | ----------------------------------------- methods in this implementation
[INFO] [stdout] 12 |     pub fn product(&self) -> &Product<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn coins(&self) -> &[Coin] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `check_availability` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl<'a> ProductRequest<'a, Created> {
[INFO] [stdout]    | ------------------------------------ associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(product: Product<'a>, coins: Vec<Coin>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn check_availability(self) -> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `deny` and `check_payment` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    | ------------------------------------------------ methods in this implementation
[INFO] [stdout] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn check_payment(self) -> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `deny` and `accept` are never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    | ------------------------------------------- methods in this implementation
[INFO] [stdout] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn accept(self) -> ProductRequest<'a, Accepted> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/product.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl<'a> Product<'a> {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 24 |     pub fn new<S: Into<Cow<'a, str>>>(name: S, price: Price) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VendingMachine` is never constructed
[INFO] [stdout]   --> 2_idioms/src/machine/vending_machine.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct VendingMachine<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:24:12
[INFO] [stdout]     |
[INFO] [stdout] 23  | impl<'a> VendingMachine<'a> {
[INFO] [stdout]     | --------------------------- associated items in this implementation
[INFO] [stdout] 24  |     pub fn new(max_capacity: u8) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41  |     pub fn add_product(&mut self, product: Product<'a>, quantity: Quantity) -> Result<(), VendingError> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61  |     pub fn max_capacity(&self) -> u8 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65  |     fn add_coins(&mut self, coins: &[Coin]) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72  |     fn delete_coins(&mut self, coins: &[Coin]) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     fn add_coin_count(&mut self, coin: Coin, count: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84  |     fn check_availability(&self, product: &Product) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 88  |     fn get_price_products(products: &HashMap<Product, (Price, Quantity)>, product: &Product<'a>) -> Result<Price, VendingError<'a>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 92  |     pub fn get_price(&self, product: &Product<'a>) -> Result<Price, VendingError> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 96  |     pub fn get_products(&self) -> Vec<Product> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     fn give_product(&mut self, product: &Product<'a>) -> Result<(), VendingError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn buy_product(&mut self, product: &Product<'a>, coins: Vec<Coin>) -> Result<(Product<'a>, Vec<Coin>), (VendingError, Vec<Coin>)> {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_sum` is never used
[INFO] [stdout]  --> 2_idioms/src/machine/change_counter.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn count_sum(coins: &[Coin]) -> u16 {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_nearest` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/change_counter.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn find_nearest(purse: &HashMap<Coin, u8>, amount: u16) -> Option<Coin> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `change_counter` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/change_counter.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn change_counter(purse: &HashMap<Coin, u8>, change_amount: u16) -> Option<Vec<Coin>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ProductNotFound`, `NotEnoughMoney`, `BadPrice`, `NotEnoughChange`, and `NotEnoughCapacity` are never constructed
[INFO] [stdout]   --> 2_idioms/src/machine/error/vending_error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum VendingError<'a> {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 10 |     ProductNotFound(ProductNotFound<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     NotEnoughMoney(NotEnoughMoney<'a>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     BadPrice(BadPrice<'a>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 13 |     NotEnoughChange(NotEnoughChange),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     NotEnoughCapacity(NotEnoughCapacity),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_money.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl<'a> NotEnoughMoney<'a> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn new(price: u16, product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/bad_price.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<'a> BadPrice<'a> {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(price: u16, product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_capacity.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl NotEnoughCapacity {
[INFO] [stdout]    | ---------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(capacity: u16, needed: u16) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/product_not_found.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<'a> ProductNotFound<'a> {
[INFO] [stdout]    | ---------------------------- associated function in this implementation
[INFO] [stdout] 23 |     pub fn new(product: Product<'a>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/error/not_enough_change.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl NotEnoughChange {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 20 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem)
[INFO] [stderr]    Compiling step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy)
[INFO] [stderr]    Compiling step_3_7 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_7_rand_crypto)
[INFO] [stderr]    Compiling step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell)
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl)
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out)
[INFO] [stdout] warning: associated items `new`, `push`, and `pop` are never used
[INFO] [stdout]   --> 1_concepts/1_3_rc_cell/src/stack.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl<T> GlobalStack<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 9  |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn push(&self, t: T) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn pop(&self) -> Option<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `PasswordHash`
[INFO] [stdout]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stdout]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_3 v0.1.0 (/opt/rustwide/workdir/4_backend/4_3_api)
[INFO] [stderr]    Compiling step_1 v0.1.0 (/opt/rustwide/workdir/1_concepts)
[INFO] [stdout] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stdout]  --> 1_concepts/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety)
[INFO] [stdout] warning: associated items `new`, `pop_node_left`, and `length` are never used
[INFO] [stdout]    --> 1_concepts/src/doubly_linked_list.rs:19:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl<T> DoublyLinkedList<T> {
[INFO] [stdout]     | --------------------------- associated items in this implementation
[INFO] [stdout] 19  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 107 |     pub fn length(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 1_concepts/src/parallel_list.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<T> ParallelDoublyLinkedList<T> {
[INFO] [stdout]    | ----------------------------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace)
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/post.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Post<Status> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     status: Status
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Post` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delete` is never used
[INFO] [stdout]   --> 2_idioms/2_1_type_safety/src/post.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl Post<Published> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 61 |     fn delete(self) -> Post<Deleted> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_5 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_5_collections)
[INFO] [stdout] warning: unused imports: `OrdMap`, `Vector`
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `add_user` are never used
[INFO] [stdout]   --> 3_ecosystem/3_5_collections/src/main.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl VecUserRepository {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn add_user(&mut self, user: User) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proptest v1.4.0
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling smart-default v0.7.1
[INFO] [stderr]    Compiling my_proc_macros_lib v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro/my_proc_macros_lib)
[INFO] [stderr]    Compiling step_3_2 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro)
[INFO] [stderr]    Compiling step_3_10 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_10_threads)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut map = btreemap! (
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handles`
[INFO] [stdout]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let handles = (0..2).map(|i| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_4 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_4_regex_parsing)
[INFO] [stdout] warning: unused variable: `captures`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     Some(captures) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             input = input_next;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 3_ecosystem/3_4_regex_parsing/src/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl RegexParser {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 61 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 199 | impl NomParser {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 200 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_5 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_5_convert_cast_deref)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_that_use_str` is never used
[INFO] [stdout]   --> 1_concepts/1_5_convert_cast_deref/src/email_string.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn fn_that_use_str(s: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Random<T> {
[INFO] [stdout]   | ----------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio v1.32.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pest v2.7.6
[INFO] [stderr]    Compiling pin-project v1.1.3
[INFO] [stderr]    Compiling clap v4.4.2
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow)
[INFO] [stderr]    Compiling pest_meta v2.7.6
[INFO] [stderr]    Compiling mockall v0.11.4
[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stderr]    Compiling step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling deranged v0.3.8
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling h2 v0.3.22
[INFO] [stderr]    Compiling json5 v0.4.1
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling ron v0.7.1
[INFO] [stderr]    Compiling humantime-serde v1.1.1
[INFO] [stderr]    Compiling secrecy v0.8.0
[INFO] [stderr]    Compiling serde_yaml v0.9.30
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling time v0.3.28
[INFO] [stderr]    Compiling config v0.12.0
[INFO] [stderr]    Compiling step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/base_struct.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Point {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(x: i32, y: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Poll` that must be used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         self.poll(&mut cx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Poll` may be a `Pending` 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] 15 |         let _ = self.poll(&mut cx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling duration-str v0.5.1
[INFO] [stderr]    Compiling hyper v0.14.28
[INFO] [stderr]    Compiling step_3_9 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_9_cmd_env_conf)
[INFO] [stderr]    Compiling step_3_6 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_6_serde)
[INFO] [stderr]    Compiling step_3_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_3_date_time)
[INFO] [stdout] warning: constant `NOW` is never used
[INFO] [stdout]   --> 3_ecosystem/3_3_date_time/src/main.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const NOW: &str = "2019-06-26";
[INFO] [stdout]    |       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]   --> 3_ecosystem/3_3_date_time/src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct User
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `with_birthdate`, `age`, and `is_adult` are never used
[INFO] [stdout]   --> 3_ecosystem/3_3_date_time/src/main.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl User {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 19 |     fn with_birthdate(year: i32, month: u32, day: u32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn age(&self) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn is_adult(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Parser`
[INFO] [stdout]  --> 3_ecosystem/3_9_cmd_env_conf/src/main.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{arg, command, Parser, value_parser};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Date`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use time::{Date, OffsetDateTime};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml::value::Datetime`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use toml::value::Datetime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_8 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_8_log)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> 3_ecosystem/3_8_log/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.23
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_11 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_11_async)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.35s
[INFO] running `Command { std: "docker" "inspect" "141a56a3e9386261cc41ee40acea992ad0d818999e7f395a3ebe0a12b5056f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141a56a3e9386261cc41ee40acea992ad0d818999e7f395a3ebe0a12b5056f90", kill_on_drop: false }`
[INFO] [stdout] 141a56a3e9386261cc41ee40acea992ad0d818999e7f395a3ebe0a12b5056f90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b3061540269191064a0383826208141509c452b7ffd8ff82a405796a8e532b4
[INFO] running `Command { std: "docker" "start" "-a" "4b3061540269191064a0383826208141509c452b7ffd8ff82a405796a8e532b4", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl DynamicUserRepository {
[INFO] [stdout]   | -------------------------- associated function in this implementation
[INFO] [stdout] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_5 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_5_collections)
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_10 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_10_threads)
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_7 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_7_sized)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_4 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_4_regex_parsing)
[INFO] [stderr]    Compiling step_1_9 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_9_phantom)
[INFO] [stderr]    Compiling step_1_5 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_5_convert_cast_deref)
[INFO] [stderr]    Compiling step_2_4 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_4_generic_in_type_out)
[INFO] [stderr]    Compiling step_2_6 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_6_sealing)
[INFO] [stderr]    Compiling step_1 v0.1.0 (/opt/rustwide/workdir/1_concepts)
[INFO] [stderr]    Compiling step_3_7 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_7_rand_crypto)
[INFO] [stderr]    Compiling step_2_5 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_5_exhaustivity)
[INFO] [stderr]    Compiling step_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem)
[INFO] [stderr]    Compiling step_1_8 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_8_thread_safety)
[INFO] [stderr]    Compiling step_1_3 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_3_rc_cell)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::TypeId`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::TypeId;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_6 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_6_dispatch)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl<T> Random<T> {
[INFO] [stdout]   | ----------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `handles`
[INFO] [stdout]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let handles = (0..2).map(|i| {
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stdout]  --> 1_concepts/src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]    --> 1_concepts/src/real_parallel_list.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     use std::thread::sleep;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OrdMap`, `Vector`
[INFO] [stdout]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `captures`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     Some(captures) => {
[INFO] [stdout]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     Err(err) => {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stdout]     |
[INFO] [stdout] 294 |             Err(err) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stdout]     |
[INFO] [stdout] 375 |             input = input_next;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SyncAndNotSend`
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:42:34
[INFO] [stdout]    |
[INFO] [stdout] 42 |     use crate::types::{OnlySend, SyncAndNotSend, SyncAndSend};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 name,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stdout]    |
[INFO] [stdout] 63 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:619:14
[INFO] [stdout]     |
[INFO] [stdout] 619 |         let (input, precision) = result.unwrap();
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 user_id,
[INFO] [stdout]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `at`
[INFO] [stdout]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 at
[INFO] [stdout]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct NotSyncNotSend<T> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `get` are never used
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stdout]    | -------------------------- associated items in this implementation
[INFO] [stdout] 15 |     fn new(value: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn get(&self) -> &T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]   --> 1_concepts/1_8_thread_safety/src/types.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct SyncAndNotSend {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 33 |     value: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SyncAndNotSend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `PasswordHash`
[INFO] [stdout]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stdout]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user2`
[INFO] [stdout]    --> 3_ecosystem/3_5_collections/src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let user2 = User {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::user::User`
[INFO] [stdout]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::user::User;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `pop_node_left` is never used
[INFO] [stdout]   --> 1_concepts/src/doubly_linked_list.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> DoublyLinkedList<T> {
[INFO] [stdout]    | --------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_3 v0.1.0 (/opt/rustwide/workdir/4_backend/4_3_api)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_4_1 v0.1.0 (/opt/rustwide/workdir/4_backend/4_1_db)
[INFO] [stderr]    Compiling step_2_3 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_3_bound_impl)
[INFO] [stderr]    Compiling step_2_2 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_2_mem_replace)
[INFO] [stderr]    Compiling step_4_2 v0.1.0 (/opt/rustwide/workdir/4_backend/4_2_http)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_2_1 v0.1.0 (/opt/rustwide/workdir/2_idioms/2_1_type_safety)
[INFO] [stderr]    Compiling step_4 v0.1.0 (/opt/rustwide/workdir/4_backend)
[INFO] [stderr]    Compiling step_2 v0.1.0 (/opt/rustwide/workdir/2_idioms)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Coin {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 8 |     state: State,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deny` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stdout]    | ------------------------------------------------ method in this implementation
[INFO] [stdout] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `deny` is never used
[INFO] [stdout]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stdout]    | ------------------------------------------- method in this implementation
[INFO] [stdout] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         vending_machine.add_product(product, Quantity(5));
[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] 179 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         vending_machine.add_product(product, Quantity(5));
[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] 188 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:202:9
[INFO] [stdout]     |
[INFO] [stdout] 202 |         vending_machine.add_product(product, Quantity(5));
[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] 202 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 235 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 235 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:248:9
[INFO] [stdout]     |
[INFO] [stdout] 248 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 248 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:259:9
[INFO] [stdout]     |
[INFO] [stdout] 259 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 259 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:284:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 284 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:305:9
[INFO] [stdout]     |
[INFO] [stdout] 305 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 305 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> 2_idioms/src/machine/vending_machine.rs:327:9
[INFO] [stdout]     |
[INFO] [stdout] 327 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 327 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_1_1 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_1_default_clone_copy)
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]    Compiling serde_derive v1.0.194
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]    Compiling my_proc_macros_lib v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro/my_proc_macros_lib)
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]    Compiling smart-default v0.7.1
[INFO] [stderr]    Compiling step_3_2 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_2_macro)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut map = btreemap! (
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling openssl v0.10.62
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio v1.32.0
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling pin-project v1.1.3
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling pest v2.7.6
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling mockall v0.11.4
[INFO] [stderr]    Compiling step_3_1 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_1_testing)
[INFO] [stderr]    Compiling clap v4.4.2
[INFO] [stderr]    Compiling step_1_4 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_4_cow)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pest_meta v2.7.6
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling pest_generator v2.7.6
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling pest_derive v2.7.6
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling deranged v0.3.8
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]    Compiling serde_spanned v0.6.5
[INFO] [stderr]    Compiling toml_datetime v0.6.5
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling ron v0.7.1
[INFO] [stderr]    Compiling tracing-serde v0.1.3
[INFO] [stderr]    Compiling json5 v0.4.1
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling serde_yaml v0.9.30
[INFO] [stderr]    Compiling secrecy v0.8.0
[INFO] [stderr]    Compiling humantime-serde v1.1.1
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling h2 v0.3.22
[INFO] [stderr]    Compiling time v0.3.28
[INFO] [stderr]    Compiling config v0.12.0
[INFO] [stderr]    Compiling step_1_2 v0.1.0 (/opt/rustwide/workdir/1_concepts/1_2_box_pin)
[INFO] [stdout] warning: unused import: `MutMeSomehow`
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:25:36
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use crate::pins::base_traits::{MutMeSomehow, SayHi};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml v0.7.8
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/future.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let mut fut = MeasurableFuture {
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Poll` that must be used
[INFO] [stdout]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |         self.poll(&mut cx);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Poll` may be a `Pending` 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] 15 |         let _ = self.poll(&mut cx);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling duration-str v0.5.1
[INFO] [stderr]    Compiling tracing-subscriber v0.3.17
[INFO] [stderr]    Compiling step_3_6 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_6_serde)
[INFO] [stderr]    Compiling step_3_9 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_9_cmd_env_conf)
[INFO] [stderr]    Compiling step_3_3 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_3_date_time)
[INFO] [stdout] warning: unused import: `Date`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use time::{Date, OffsetDateTime};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml::value::Datetime`
[INFO] [stdout]  --> 3_ecosystem/3_6_serde/src/debug.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use toml::value::Datetime;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Parser`
[INFO] [stdout]  --> 3_ecosystem/3_9_cmd_env_conf/src/main.rs:4:26
[INFO] [stdout]   |
[INFO] [stdout] 4 | use clap::{arg, command, Parser, value_parser};
[INFO] [stdout]   |                          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper v0.14.28
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling step_3_8 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_8_log)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> 3_ecosystem/3_8_log/src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.23
[INFO] [stderr]    Compiling step_3_11 v0.1.0 (/opt/rustwide/workdir/3_ecosystem/3_11_async)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 19.27s
[INFO] running `Command { std: "docker" "inspect" "4b3061540269191064a0383826208141509c452b7ffd8ff82a405796a8e532b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b3061540269191064a0383826208141509c452b7ffd8ff82a405796a8e532b4", kill_on_drop: false }`
[INFO] [stdout] 4b3061540269191064a0383826208141509c452b7ffd8ff82a405796a8e532b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ba36455646fdf6e5ae98edfabf780f8fba6e91386be442f107feab59590b2402
[INFO] running `Command { std: "docker" "start" "-a" "ba36455646fdf6e5ae98edfabf780f8fba6e91386be442f107feab59590b2402", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: unused import: `crate::user::User`
[INFO] [stderr]  --> 1_concepts/1_6_dispatch/src/storage.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::user::User;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> 1_concepts/1_6_dispatch/src/dynamic.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | impl DynamicUserRepository {
[INFO] [stderr]   | -------------------------- associated function in this implementation
[INFO] [stderr] 9 |     fn new(storage: Box<dyn Storage<u64, User>>) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `step_1_6` (lib) generated 2 warnings (run `cargo fix --lib -p step_1_6` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:36:17
[INFO] [stderr]    |
[INFO] [stderr] 36 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:37:17
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:49:17
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 name,
[INFO] [stderr]    |                 ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:50:17
[INFO] [stderr]    |
[INFO] [stderr] 50 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:51:17
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:73:17
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user_id`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:85:17
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 user_id,
[INFO] [stderr]    |                 ^^^^^^^ help: try ignoring the field: `user_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `at`
[INFO] [stderr]   --> 2_idioms/2_5_exhaustivity/src/lib.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 at
[INFO] [stderr]    |                 ^^ help: try ignoring the field: `at: _`
[INFO] [stderr] 
[INFO] [stderr] warning: `step_2_5` (lib) generated 11 warnings (run `cargo fix --lib -p step_2_5` to apply 11 suggestions)
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]  --> 2_idioms/2_6_sealing/src/lib.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::any::TypeId;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Debug`, `Display`, `Formatter`
[INFO] [stderr]  --> 2_idioms/2_6_sealing/src/lib.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fmt::{Debug, Display, Formatter};
[INFO] [stderr]   |                ^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handles`
[INFO] [stderr]   --> 3_ecosystem/3_10_threads/src/main.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     let handles = (0..2).map(|i| {
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handles`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Date`
[INFO] [stderr]  --> 3_ecosystem/3_6_serde/src/debug.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | use time::{Date, OffsetDateTime};
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `toml::value::Datetime`
[INFO] [stderr]  --> 3_ecosystem/3_6_serde/src/debug.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use toml::value::Datetime;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> 3_ecosystem/3_1_testing/src/main.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let mut guess = getter.get_guess_number();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> 3_ecosystem/3_8_log/src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Parser`
[INFO] [stderr]  --> 3_ecosystem/3_9_cmd_env_conf/src/main.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 | use clap::{arg, command, Parser, value_parser};
[INFO] [stderr]   |                          ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Error`, `PasswordHash`
[INFO] [stderr]  --> 3_ecosystem/3_7_rand_crypto/src/main.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use argon2::{Argon2, Error, PasswordHash, PasswordHasher};
[INFO] [stderr]   |                      ^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OrdMap`, `Vector`
[INFO] [stderr]  --> 3_ecosystem/3_5_collections/src/main.rs:2:19
[INFO] [stderr]   |
[INFO] [stderr] 2 | use im::{HashMap, OrdMap, Vector};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user2`
[INFO] [stderr]    --> 3_ecosystem/3_5_collections/src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let user2 = User {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MutMeSomehow`
[INFO] [stderr]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:25:36
[INFO] [stderr]    |
[INFO] [stderr] 25 |     use crate::pins::base_traits::{MutMeSomehow, SayHi};
[INFO] [stderr]    |                                    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> 1_concepts/1_2_box_pin/src/pins/future.rs:41:13
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let mut fut = MeasurableFuture {
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Poll` that must be used
[INFO] [stderr]   --> 1_concepts/1_2_box_pin/src/pins/generic/t_pin.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         self.poll(&mut cx);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Poll` may be a `Pending` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let _ = self.poll(&mut cx);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> 3_ecosystem/3_2_macro/src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut map = btreemap! (
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `step_2_6` (lib) generated 2 warnings (run `cargo fix --lib -p step_2_6` to apply 2 suggestions)
[INFO] [stderr] warning: `step_3_10` (bin "step_3_10" test) generated 1 warning (run `cargo fix --bin "step_3_10" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_6` (bin "step_3_6" test) generated 2 warnings (run `cargo fix --bin "step_3_6" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_3_1` (bin "step_3_1" test) generated 1 warning (run `cargo fix --bin "step_3_1" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_8` (bin "step_3_8" test) generated 1 warning (run `cargo fix --bin "step_3_8" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_9` (bin "step_3_9" test) generated 1 warning (run `cargo fix --bin "step_3_9" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_7` (bin "step_3_7" test) generated 1 warning (run `cargo fix --bin "step_3_7" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_3_5` (bin "step_3_5" test) generated 2 warnings (run `cargo fix --bin "step_3_5" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_1_2` (bin "step_1_2" test) generated 3 warnings (run `cargo fix --bin "step_1_2" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_3_2` (bin "step_3_2" test) generated 1 warning (run `cargo fix --bin "step_3_2" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: unused variable: `captures`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:111:26
[INFO] [stderr]     |
[INFO] [stderr] 111 |                     Some(captures) => {
[INFO] [stderr]     |                          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_captures`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:262:25
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     Err(err) => {
[INFO] [stderr]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:294:17
[INFO] [stderr]     |
[INFO] [stderr] 294 |             Err(err) => {
[INFO] [stderr]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `input` is never read
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:375:13
[INFO] [stderr]     |
[INFO] [stderr] 375 |             input = input_next;
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> 3_ecosystem/3_4_regex_parsing/src/main.rs:619:14
[INFO] [stderr]     |
[INFO] [stderr] 619 |         let (input, precision) = result.unwrap();
[INFO] [stderr]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]  --> 1_concepts/1_5_convert_cast_deref/src/random_t.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | impl<T> Random<T> {
[INFO] [stderr]   | ----------------- associated function in this implementation
[INFO] [stderr] 9 |     pub fn new(a: T, b: T, c: T) -> Self {
[INFO] [stderr]   |            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> 2_idioms/src/coin/coin.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl Coin {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] 12 |     pub fn new(value: u16) -> Option<Self> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `state` is never read
[INFO] [stderr]  --> 2_idioms/src/machine/request/product_request.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct ProductRequest<'a, State> {
[INFO] [stderr]   |            -------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 8 |     state: State,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `deny` is never used
[INFO] [stderr]   --> 2_idioms/src/machine/request/product_request.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl<'a> ProductRequest<'a, CheckedAvailability> {
[INFO] [stderr]    | ------------------------------------------------ method in this implementation
[INFO] [stderr] 36 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `deny` is never used
[INFO] [stderr]   --> 2_idioms/src/machine/request/product_request.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 45 | impl<'a> ProductRequest<'a, CheckedPayment> {
[INFO] [stderr]    | ------------------------------------------- method in this implementation
[INFO] [stderr] 46 |     pub fn deny(self) -> ProductRequest<'a, Denied> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:179:9
[INFO] [stderr]     |
[INFO] [stderr] 179 |         vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 179 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         vending_machine.add_product(product, Quantity(5));
[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] 188 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:202:9
[INFO] [stderr]     |
[INFO] [stderr] 202 |         vending_machine.add_product(product, Quantity(5));
[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] 202 |         let _ = vending_machine.add_product(product, Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:235:9
[INFO] [stderr]     |
[INFO] [stderr] 235 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 235 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:248:9
[INFO] [stderr]     |
[INFO] [stderr] 248 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 248 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:259:9
[INFO] [stderr]     |
[INFO] [stderr] 259 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 259 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:284:9
[INFO] [stderr]     |
[INFO] [stderr] 284 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 284 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:305:9
[INFO] [stderr]     |
[INFO] [stderr] 305 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 305 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> 2_idioms/src/machine/vending_machine.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |         vending_machine.add_product(product.clone(), Quantity(5));
[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] 327 |         let _ = vending_machine.add_product(product.clone(), Quantity(5));
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::doubly_linked_list::DoublyLinkedList`
[INFO] [stderr]  --> 1_concepts/src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::doubly_linked_list::DoublyLinkedList;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]    --> 1_concepts/src/real_parallel_list.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     use std::thread::sleep;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]   --> 1_concepts/src/real_parallel_list.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |         let tail = self.tail.lock().unwrap();
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `pop_node_left` is never used
[INFO] [stderr]   --> 1_concepts/src/doubly_linked_list.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl<T> DoublyLinkedList<T> {
[INFO] [stderr]    | --------------------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 75 |     fn pop_node_left(node_right: Node<T>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `step_3_4` (bin "step_3_4" test) generated 5 warnings (run `cargo fix --bin "step_3_4" --tests` to apply 4 suggestions)
[INFO] [stderr] warning: `step_1_5` (bin "step_1_5" test) generated 3 warnings (run `cargo fix --bin "step_1_5" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `step_2` (bin "step_2" test) generated 13 warnings
[INFO] [stderr] warning: `step_1` (bin "step_1" test) generated 4 warnings (run `cargo fix --bin "step_1" --tests` to apply 3 suggestions)
[INFO] [stderr] warning: `step_2_6` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: unused import: `SyncAndNotSend`
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 42 |     use crate::types::{OnlySend, SyncAndNotSend, SyncAndSend};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `NotSyncNotSend` is never constructed
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct NotSyncNotSend<T> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `get` are never used
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | impl <T> NotSyncNotSend<T> {
[INFO] [stderr]    | -------------------------- associated items in this implementation
[INFO] [stderr] 15 |     fn new(value: T) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 21 |     fn get(&self) -> &T {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]   --> 1_concepts/1_8_thread_safety/src/types.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | struct SyncAndNotSend {
[INFO] [stderr]    |        -------------- field in this struct
[INFO] [stderr] 33 |     value: u32,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `SyncAndNotSend` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: `step_2_5` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr] warning: `step_1_8` (bin "step_1_8" test) generated 4 warnings (run `cargo fix --bin "step_1_8" --tests` to apply 1 suggestion)
[INFO] [stderr] warning: `step_1_6` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/my_proc_macros_lib-cec8caaa0dcbbb1b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-5990bfbcd87d697d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1-ce26423422f3fd48)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_new ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_get ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_clear ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_pop_head ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_new_head ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_pop_tail ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_push ... ok
[INFO] [stdout] test doubly_linked_list::tests::test_doubly_linked_list_update_head ... ok
[INFO] [stdout] test list_node::tests::test_list_node ... ok
[INFO] [stdout] test parallel_list::tests::test_parallel_doubly_linked_list ... ok
[INFO] [stdout] test parallel_list::tests::test_parallel_doubly_linked_list_push ... ok
[INFO] [stdout] test parallel_node::tests::test_parallel_node ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_pop ... ok
[INFO] [stdout] test parallel_list::tests::test_parallel_doubly_linked_list_push_parallel ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_push ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_push_parallel ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_pop_parallel ... ok
[INFO] [stdout] test real_parallel_list::tests::test_parallel_doubly_linked_list_many ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_1-cfcd3c7ed661cfdc)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test structs::point::tests::test_point_new ... ok
[INFO] [stdout] test structs::point::tests::test_point_clone ... ok
[INFO] [stdout] test structs::point::tests::test_point_default ... ok
[INFO] [stdout] test structs::polyline::tests::test_polyline_clone ... ok
[INFO] [stdout] test structs::point::tests::test_point_copy ... ok
[INFO] [stdout] test structs::polyline::tests::test_polyline_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_2-814fbd0b0c67f16c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test pins::generic::t_pin::tests::test_point_hi ... ok
[INFO] [stdout] test pins::future::tests::test_future ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_3-207bc69681191e44)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test stack::tests::test_global_stack ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_4-2e5be580246ecf3f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_5-a041eeb111b08e0c)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test email_string::tests::test_email_string_as_ref ... ok
[INFO] [stdout] test email_string::tests::test_email_string_borrow ... ok
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_1_6-6c7d8ec45cd9bb2f)
[INFO] [stdout] test email_string::tests::test_email_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test user::tests::test_user ... ok
[INFO] [stdout] test r#static::tests::test_user_repository ... ok
[INFO] [stdout] test dynamic::tests::test_user_repository ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_7-be7fbf55a6cfee41)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test user_command_handler::tests::test_user_repository ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_8-215f591e80941894)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test types::tests::test_only_send ... ok
[INFO] [stdout] test types::tests::test_sync_and_send ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_1_9-b940f634198555a8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2-7c458583ad0b4159)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test machine::vending_machine::tests::test_add_product_not_enough_capacity ... ok
[INFO] [stdout] test machine::change_counter::tests::test_change_counter_little ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_get_products ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_get_price ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_product ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_check_availability ... ok
[INFO] [stdout] test machine::change_counter::tests::test_find_nearest_none ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_coin_count ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_buy_product_ok ... ok
[INFO] [stdout] test machine::change_counter::tests::test_change_counter_no_change ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_new ... ok
[INFO] [stdout] test machine::change_counter::tests::test_change_counter ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_delete_coins ... ok
[INFO] [stdout] test machine::change_counter::tests::test_find_nearest ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_coins ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_add_product_bad_price ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_buy_product_ok_more_coins ... ok
[INFO] [stdout] test machine::vending_machine::tests::test_buy_product_no_product ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_1-b0b57fb05b33ff93)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test post::tests::test_post_actions_deny ... ok
[INFO] [stdout] test post::tests::test_post_actions_allow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_2-ec02890f52fc3784)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_3-4fc5d2fcd02c6161)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_2_4-91da4a753c4cc43f)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test server_spec::bind::sets_provided_address_to_server ... ok
[INFO] [stdout] test server_spec::bind::test_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_2_5-bf359eff77943e5f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_2_6-ee7d2efb1d5d16e8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3-212f373d9c8da7e0)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_1-dcd12b2461c25834)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::test_guess_loop_equal ... ok
[INFO] [stdout] test tests::test_guess_loop_not_a_number ... ok
[INFO] [stdout] test tests::test_get_guess_number_positive_number ... ok
[INFO] [stdout] test tests::test_get_guess_number_not_a_number ... ok
[INFO] [stdout] test tests::test_guess_loop_bigger ... ok
[INFO] [stdout] test tests::test_get_guess_number_negative_number ... ok
[INFO] [stdout] test tests::test_guess_loop_smaller ... ok
[INFO] [stdout] test tests::test_get_secret_number_positive_number ... ok
[INFO] [stdout] test tests::test_get_secret_number_negative_number - should panic ... ok
[INFO] [stdout] test tests::test_get_secret_number_not_a_number - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_10-758cfee2eda02ae9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_11-72498663dddb2339)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_2-954869955bc1ea46)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_3-f70107087ce75d79)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test age_spec::counts_age ... ok
[INFO] [stdout] test age_spec::adult_check ... ok
[INFO] [stdout] test age_spec::zero_if_birthdate_in_future ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_4-e8d72871b1274650)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test spec::test_parse_regex_sign ... ok
[INFO] [stdout] test spec::test_parse_nom_full ... ok
[INFO] [stdout] test spec::test_parse_sign_nom ... ok
[INFO] [stdout] test spec::test_parse_align_nom ... ok
[INFO] [stdout] test spec::test_parse_grid_nom ... ok
[INFO] [stdout] test spec::test_parse_regex_integer ... ok
[INFO] [stdout] test spec::parses_precision ... ok
[INFO] [stdout] test spec::test_parse_regex_precision ... ok
[INFO] [stdout] test spec::parses_width ... ok
[INFO] [stdout] test spec::test_parse_regex_count ... ok
[INFO] [stdout] test spec::parses_sign ... ok
[INFO] [stdout] test spec::test_parse_regex_full ... ok
[INFO] [stdout] test spec::test_parse_regex_argument ... ok
[INFO] [stdout] test spec::test_parse_regex_identifier ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_5-55700bc3b1aab5cf)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::test_user_repo_get_by_id_not_exists ... ok
[INFO] [stdout] test tests::test_user_repo_get_by_id_exists ... ok
[INFO] [stdout] test tests::test_user_repo_get_by_ids_exist ... ok
[INFO] [stdout] test tests::test_user_repo_get_by_ids_not_exist ... ok
[INFO] [stdout] test tests::test_user_repo_new ... ok
[INFO] [stdout] test tests::test_user_repo_search_contain_nickname_not_exist ... ok
[INFO] [stdout] test tests::test_user_repo_search_contain_nickname_exist ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_6-0d6da56fbbb23d00)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test request::tests::type_parse ... ok
[INFO] [stdout] test debug::tests::debug_parse ... ok
[INFO] [stdout] test request::tests::request_parse ... ok
[INFO] [stdout] test gift::tests::gift_parse ... ok
[INFO] [stdout] test stream::tests::stream_parse ... ok
[INFO] [stdout] test private_tariff::tests::private_tariff_parse ... ok
[INFO] [stdout] test public_tariff::tests::public_tariff_parse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_7-e57f91e9966901b8)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_8-c3ef3a3b65384a9c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_3_9-6bca250642b191b8)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4-f487fea383ef44e0)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4_1-963135e4b300172c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4_2-b3f9835ee41054ec)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/step_4_3-5ae9edf7d2d2b38b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests my_proc_macros_lib
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests step_1_6
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests step_2_5
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests step_2_6
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_error.rs - my_error::MyError (line 14) - compile fail ... ok
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt (line 23) - compile fail ... ok
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format (line 44) ... FAILED
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format_with (line 72) ... FAILED
[INFO] [stdout] test 2_idioms/2_6_sealing/src/my_error.rs - my_error::MyError::source (line 38) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format (line 44) stdout ----
[INFO] [stdout] error[E0599]: no method named `format` found for struct `std::slice::Iter` in the current scope
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/my_iterator_ext.rs:50:34
[INFO] [stdout]   |
[INFO] [stdout] 9 |     format!("{:.2}", data.iter().format(", ")),
[INFO] [stdout]   |                                  ^^^^^^ method not found in `Iter<'_, {float}>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- 2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format_with (line 72) stdout ----
[INFO] [stdout] error[E0599]: no method named `format_with` found for struct `std::slice::Iter` in the current scope
[INFO] [stdout]  --> 2_idioms/2_6_sealing/src/my_iterator_ext.rs:77:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | let data_formatter = data.iter().format_with(", ", |elt, f| f(&format_args!("{:.2}", elt)));
[INFO] [stdout]   |                                  ^^^^^^^^^^^ method not found in `Iter<'_, {float}>`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `format_with` found for struct `std::slice::Iter` in the current scope
[INFO] [stdout]   --> 2_idioms/2_6_sealing/src/my_iterator_ext.rs:84:38
[INFO] [stdout]    |
[INFO] [stdout] 15 | let matrix_formatter = matrix.iter().format_with("\n", |row, f| {
[INFO] [stdout]    |                        --------------^^^^^^^^^^^ method not found in `Iter<'_, [{float}; 3]>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format (line 44)
[INFO] [stdout]     2_idioms/2_6_sealing/src/my_iterator_ext.rs - my_iterator_ext::MyIteratorExt::format_with (line 72)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `-p step_2_6 --doc`
[INFO] running `Command { std: "docker" "inspect" "ba36455646fdf6e5ae98edfabf780f8fba6e91386be442f107feab59590b2402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba36455646fdf6e5ae98edfabf780f8fba6e91386be442f107feab59590b2402", kill_on_drop: false }`
[INFO] [stdout] ba36455646fdf6e5ae98edfabf780f8fba6e91386be442f107feab59590b2402
