[INFO] cloning repository https://github.com/SarthakMakhija/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SarthakMakhija/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarthakMakhija%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarthakMakhija%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c17111474bda3bad7e5601da1158be35aa2540ce
[INFO] testing SarthakMakhija/learning-rust against 1.93.0 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSarthakMakhija%2Flearning-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SarthakMakhija/learning-rust
[INFO] finished tweaking git repo https://github.com/SarthakMakhija/learning-rust
[INFO] tweaked toml for git repo https://github.com/SarthakMakhija/learning-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SarthakMakhija/learning-rust on toolchain 1.93.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.93.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SarthakMakhija/learning-rust 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" "+1.93.0" "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]   |
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded tonic-build v0.8.2
[INFO] [stderr]   Downloaded prost-build v0.11.2
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2ecc6e846baea5a38d32a3e433b355ecd50e8cfe4352ccf7e20eabe861dfbd6
[INFO] running `Command { std: "docker" "start" "-a" "d2ecc6e846baea5a38d32a3e433b355ecd50e8cfe4352ccf7e20eabe861dfbd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2ecc6e846baea5a38d32a3e433b355ecd50e8cfe4352ccf7e20eabe861dfbd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2ecc6e846baea5a38d32a3e433b355ecd50e8cfe4352ccf7e20eabe861dfbd6", kill_on_drop: false }`
[INFO] [stdout] d2ecc6e846baea5a38d32a3e433b355ecd50e8cfe4352ccf7e20eabe861dfbd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b20693f7214d806d498d61437df3a4b95b9c139d3618de74158a731596e748d
[INFO] running `Command { std: "docker" "start" "-a" "4b20693f7214d806d498d61437df3a4b95b9c139d3618de74158a731596e748d", 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]   |
[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
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[INFO] [stderr]    Compiling grpc v0.1.0 (/opt/rustwide/workdir/grpc)
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[INFO] [stderr]    Compiling tokio-stream v0.1.11
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[INFO] [stderr]    Compiling language v0.1.0 (/opt/rustwide/workdir/language)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> language/src/singular_update_queue/singular_update_queue.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> language/src/cache/expiry.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> language/src/cache/evicting_worker.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `RwLock`
[INFO] [stdout]  --> language/src/cache/evicting_worker.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::{Arc, RwLock};
[INFO] [stdout]   |                 ^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expiry` and `ValueRef`
[INFO] [stdout]  --> language/src/cache/evicting_worker.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::cache::expiry::{Expiry, ValueRef};
[INFO] [stdout]   |                            ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Employees` is never constructed
[INFO] [stdout]  --> language/src/employees.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Employees {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Employee` is never constructed
[INFO] [stdout]  --> language/src/employees.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Employee {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_employees`, `find_by`, `find_by_predicate`, and `add` are never used
[INFO] [stdout]   --> language/src/employees.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Employees {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 13 |     fn new_employees() -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn find_by(&self, id: u16) -> Option<&Employee> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn find_by_predicate<F>(&self, predicate: F) -> Option<&Employee>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn add(&mut self, employee: Employee) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Employees` is never constructed
[INFO] [stdout]  --> language/src/lifetime.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Employees<'b> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Employee` is never constructed
[INFO] [stdout]  --> language/src/lifetime.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Employee<'a> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new_employees`, `find_by`, and `add` are never used
[INFO] [stdout]   --> language/src/lifetime.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'a> Employees<'a> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 12 |     fn new_employees() -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn find_by(&self, id: u16) -> Option<&Employee> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn add(&mut self, employee: Employee<'a>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> language/src/basic_error_handling.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn parse(inputs: Vec<&str>) -> Result<Vec<u64>, ParseIntError> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `OperationId` is never used
[INFO] [stdout]  --> language/src/closure.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum OperationId {
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ArithmeticFunction` is never used
[INFO] [stdout]  --> language/src/closure.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type ArithmeticFunction = Box<dyn Fn(u32, u32) -> u32>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArithmeticOperations` is never constructed
[INFO] [stdout]   --> language/src/closure.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct ArithmeticOperations {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add`, and `execute` are never used
[INFO] [stdout]   --> language/src/closure.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl ArithmeticOperations {
[INFO] [stdout]    | ------------------------- associated items in this implementation
[INFO] [stdout] 16 |     fn new() -> ArithmeticOperations {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn add<C>(&mut self, operation: OperationId, code: C)
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn execute(&self, operation_by_id: OperationId, a: u32, b: u32) -> Option<u32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodePointer` is never used
[INFO] [stdout]  --> language/src/linked_list.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | type NodePointer = Box<LinkedListNode>;
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedList` is never constructed
[INFO] [stdout]  --> language/src/linked_list.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct LinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LinkedListNode` is never constructed
[INFO] [stdout]  --> language/src/linked_list.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct LinkedListNode {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `append`, `has`, and `count` are never used
[INFO] [stdout]   --> language/src/linked_list.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl LinkedList {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 13 |     fn new() -> LinkedList {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn append(&mut self, key: i64) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn has(&self, key: i64) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn count(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `append`, `has`, and `count` are never used
[INFO] [stdout]   --> language/src/linked_list.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl LinkedListNode {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 33 |     fn append(&mut self, key: i64) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn has(&self, key: i64) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn count(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_of` is never used
[INFO] [stdout]  --> language/src/concurrency/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn sum_of(chunk: Vec<u64>) -> u64 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sequential_sum_of` is never used
[INFO] [stdout]  --> language/src/concurrency/sequential_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn sequential_sum_of(chunk: Vec<u64>) -> u64 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONCURRENCY_FACTOR` is never used
[INFO] [stdout]  --> language/src/concurrency/async_sum.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const CONCURRENCY_FACTOR: usize = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]  --> language/src/concurrency/async_sum.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | async fn sum(input: Vec<u64>) -> u64 {
[INFO] [stdout]   |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrent_sum` is never used
[INFO] [stdout]   --> language/src/concurrency/async_sum.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | async fn concurrent_sum(input: Vec<u64>) -> Vec<JoinHandle<u64>> {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> language/src/concurrency/async_sum.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn divide(input: &Vec<u64>, chunk_size: usize) -> Vec<Vec<u64>> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONCURRENCY_FACTOR` is never used
[INFO] [stdout]  --> language/src/concurrency/concurrent_sum.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const CONCURRENCY_FACTOR: usize = 10;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum` is never used
[INFO] [stdout]  --> language/src/concurrency/concurrent_sum.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn sum(input: Vec<u64>) -> u64 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concurrent_sum` is never used
[INFO] [stdout]   --> language/src/concurrency/concurrent_sum.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn concurrent_sum(input: Vec<u64>) -> Vec<JoinHandle<u64>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide` is never used
[INFO] [stdout]   --> language/src/concurrency/concurrent_sum.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn divide(input: &Vec<u64>, chunk_size: usize) -> Vec<Vec<u64>> {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Storage` is never used
[INFO] [stdout]  --> language/src/singular_update_queue/singular_update_queue.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | type Storage = Arc<RwLock<HashMap<String, String>>>;
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `CommandHandler` is never used
[INFO] [stdout]  --> language/src/singular_update_queue/singular_update_queue.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | trait CommandHandler: Send + Sync {
[INFO] [stdout]   |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InMemoryStorageHandler` is never constructed
[INFO] [stdout]   --> language/src/singular_update_queue/singular_update_queue.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct InMemoryStorageHandler {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SingularUpdateQueue` is never constructed
[INFO] [stdout]   --> language/src/singular_update_queue/singular_update_queue.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct SingularUpdateQueue {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Command` is never used
[INFO] [stdout]   --> language/src/singular_update_queue/singular_update_queue.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum Command {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_respond_back` is never used
[INFO] [stdout]   --> language/src/singular_update_queue/singular_update_queue.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Command {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 52 |     fn get_respond_back(&self) -> Sender<Status> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> language/src/singular_update_queue/singular_update_queue.rs:65:6
[INFO] [stdout]    |
[INFO] [stdout] 65 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `init`, `spin_receiver`, and `execute` are never used
[INFO] [stdout]   --> language/src/singular_update_queue/singular_update_queue.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl SingularUpdateQueue {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 70 |     fn init(handler: Arc<dyn CommandHandler>) -> SingularUpdateQueue {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn spin_receiver(handler: Arc<dyn CommandHandler>) -> SingularUpdateQueue {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn execute(&self, command: Command) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Storage` is never used
[INFO] [stdout]  --> language/src/singular_update_queue/async_singular_update_queue.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | type Storage = Arc<RwLock<HashMap<String, String>>>;
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsyncSingularUpdateQueue` is never constructed
[INFO] [stdout]  --> language/src/singular_update_queue/async_singular_update_queue.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct AsyncSingularUpdateQueue {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Command` is never used
[INFO] [stdout]   --> language/src/singular_update_queue/async_singular_update_queue.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Command {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Status` is never used
[INFO] [stdout]   --> language/src/singular_update_queue/async_singular_update_queue.rs:27:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum Status {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `init`, `spin_receiver`, and `execute` are never used
[INFO] [stdout]   --> language/src/singular_update_queue/async_singular_update_queue.rs:32:14
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl AsyncSingularUpdateQueue {
[INFO] [stdout]    | ----------------------------- associated items in this implementation
[INFO] [stdout] 32 |     async fn init(storage: Storage) -> AsyncSingularUpdateQueue {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn spin_receiver(storage: Storage) -> AsyncSingularUpdateQueue {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     async fn execute(&self, command: Command) {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ShardedLockedStorage` is never used
[INFO] [stdout]  --> language/src/cache/evicting_cache.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub(crate) type ShardedLockedStorage = Arc<Vec<RwLock<HashMap<String, Arc<ValueRef>>>>>;
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `BucketIndex` is never used
[INFO] [stdout]   --> language/src/cache/evicting_cache.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub(crate) type BucketIndex = usize;
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EvictingCache` is never constructed
[INFO] [stdout]   --> language/src/cache/evicting_cache.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct EvictingCache {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `put`, `put_with_expiry`, `get`, and `index_of` are never used
[INFO] [stdout]   --> language/src/cache/evicting_cache.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl EvictingCache {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 18 |     fn new(buckets: usize) -> EvictingCache {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn put(&mut self, key: String, value: String) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn put_with_expiry(&mut self, key: String, value: String, expiry: Expiry) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get(&self, key: String) -> Option<Arc<ValueRef>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn index_of(&self, key: &String) -> BucketIndex {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ValueRef` is never constructed
[INFO] [stdout]  --> language/src/cache/expiry.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ValueRef {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `value`, and `has_expired` are never used
[INFO] [stdout]   --> language/src/cache/expiry.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl ValueRef {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new(value: String, expiry: Expiry) -> ValueRef {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn value(&self) -> &String {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn has_expired(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Expiry` is never constructed
[INFO] [stdout]   --> language/src/cache/expiry.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Expiry {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `never`, `immediate`, and `after_seconds` are never used
[INFO] [stdout]   --> language/src/cache/expiry.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Expiry {
[INFO] [stdout]    | ----------- associated functions in this implementation
[INFO] [stdout] 36 |     pub fn never() -> Expiry {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub(crate) fn immediate() -> Expiry {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn after_seconds(time: u64) -> Expiry {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EvictingWorker` is never constructed
[INFO] [stdout]  --> language/src/cache/evicting_worker.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct EvictingWorker {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `SLEEP_FOR_SECONDS`, `run`, `run_from`, and `evict` are never used
[INFO] [stdout]   --> language/src/cache/evicting_worker.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl EvictingWorker {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 16 |     const SLEEP_FOR_SECONDS: Duration = Duration::from_micros(5);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |
[INFO] [stdout] 18 |     fn run(buckets: usize, storage: ShardedLockedStorage) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn run_from(buckets: usize, current_bucket: BucketIndex, storage: ShardedLockedStorage) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn evict(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> language/src/lifetime.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn find_by(&self, id: u16) -> Option<&Employee> {
[INFO] [stdout]    |                ^^^^^                     ^^^^^^^^^
[INFO] [stdout]    |                |                         ||
[INFO] [stdout]    |                |                         |the same lifetime is hidden here
[INFO] [stdout]    |                |                         the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn find_by(&self, id: u16) -> Option<&Employee<'_>> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hyper v0.14.23
[INFO] [stderr]    Compiling hyper-timeout v0.4.1
[INFO] [stderr]    Compiling axum v0.5.17
[INFO] [stderr]    Compiling tonic v0.8.2
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]  --> grpc/src/greetings_server.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> grpc/src/greetings_server.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::mpsc`
[INFO] [stdout]  --> grpc/src/greetings_server.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use tokio::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tonic::transport::Server`
[INFO] [stdout]  --> grpc/src/greetings_server.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tonic::transport::Server;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::greetings_server::mod_greetings::greetings_client::GreetingsClient`
[INFO] [stdout]  --> grpc/src/greetings_server.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::greetings_server::mod_greetings::greetings_client::GreetingsClient;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::greetings_server::mod_greetings::greetings_server::GreetingsServer`
[INFO] [stdout]   --> grpc/src/greetings_server.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::greetings_server::mod_greetings::greetings_server::GreetingsServer;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DefaultGreetingsServer` is never constructed
[INFO] [stdout]   --> grpc/src/greetings_server.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct DefaultGreetingsServer {}
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.17s
[INFO] running `Command { std: "docker" "inspect" "4b20693f7214d806d498d61437df3a4b95b9c139d3618de74158a731596e748d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b20693f7214d806d498d61437df3a4b95b9c139d3618de74158a731596e748d", kill_on_drop: false }`
[INFO] [stdout] 4b20693f7214d806d498d61437df3a4b95b9c139d3618de74158a731596e748d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f08e0177b1c48c541e30fee8e959d16501c7f9d2132214bce74da043c44ba6f2
[INFO] running `Command { std: "docker" "start" "-a" "f08e0177b1c48c541e30fee8e959d16501c7f9d2132214bce74da043c44ba6f2", 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]   |
[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 language v0.1.0 (/opt/rustwide/workdir/language)
[INFO] [stderr]    Compiling grpc v0.1.0 (/opt/rustwide/workdir/grpc)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> language/src/lifetime.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn find_by(&self, id: u16) -> Option<&Employee> {
[INFO] [stdout]    |                ^^^^^                     ^^^^^^^^^
[INFO] [stdout]    |                |                         ||
[INFO] [stdout]    |                |                         |the same lifetime is hidden here
[INFO] [stdout]    |                |                         the same lifetime is elided here
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn find_by(&self, id: u16) -> Option<&Employee<'_>> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.08s
[INFO] running `Command { std: "docker" "inspect" "f08e0177b1c48c541e30fee8e959d16501c7f9d2132214bce74da043c44ba6f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f08e0177b1c48c541e30fee8e959d16501c7f9d2132214bce74da043c44ba6f2", kill_on_drop: false }`
[INFO] [stdout] f08e0177b1c48c541e30fee8e959d16501c7f9d2132214bce74da043c44ba6f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9692fa1cce3676bec8ebd337f2d55815a3d6c0abcc6c037a8477145c9b8d2672
[INFO] running `Command { std: "docker" "start" "-a" "9692fa1cce3676bec8ebd337f2d55815a3d6c0abcc6c037a8477145c9b8d2672", 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]   |
[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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> language/src/lifetime.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn find_by(&self, id: u16) -> Option<&Employee> {
[INFO] [stderr]    |                ^^^^^                     ^^^^^^^^^
[INFO] [stderr]    |                |                         ||
[INFO] [stderr]    |                |                         |the same lifetime is hidden here
[INFO] [stderr]    |                |                         the same lifetime is elided here
[INFO] [stderr]    |                the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn find_by(&self, id: u16) -> Option<&Employee<'_>> {
[INFO] [stderr]    |                                                   ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `language` (bin "language" test) generated 1 warning (run `cargo fix --bin "language" -p language --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/grpc-da15236b3bae2e34)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test greetings_server::tests::test_greetings ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/language-e4ee08b2f548743f)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test basic_error_handling::tests::test_failed_parse ... ok
[INFO] [stdout] test basic_error_handling::tests::test_successful_parse ... ok
[INFO] [stdout] test cache::evicting_cache::tests::test_get_value_by_an_expired_value_of_key ... ok
[INFO] [stdout] test cache::evicting_cache::tests::test_get_value_by_an_existing_key ... ok
[INFO] [stdout] test cache::expiry::tests::test_a_non_expiry_with_an_expiring_value ... ok
[INFO] [stdout] test cache::expiry::tests::test_a_non_expiry_with_a_never_expiring_value ... ok
[INFO] [stdout] test closure::tests::test_execute_addition ... ok
[INFO] [stdout] test closure::tests::test_execute_multiplication ... ok
[INFO] [stdout] test employees::tests::test_find_employees_by_salary_gt ... ok
[INFO] [stdout] test employees::tests::test_find_employees_by_existing_id_2 ... ok
[INFO] [stdout] test lifetime::tests::test_find_employees_by_existing_id_1 ... ok
[INFO] [stdout] test linked_list::tests::test_add_and_ensure_a_key_is_present ... ok
[INFO] [stdout] test employees::tests::test_find_employees_by_a_non_existing_id ... ok
[INFO] [stdout] test lifetime::tests::test_find_employees_by_a_non_existing_id ... ok
[INFO] [stdout] test lifetime::tests::test_find_employees_by_existing_id_2 ... ok
[INFO] [stdout] test singular_update_queue::async_singular_update_queue::tests::test_get_with_insert_by_a_single_task ... ok
[INFO] [stdout] test singular_update_queue::async_singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks ... ok
[INFO] [stdout] test linked_list::tests::test_add_and_count_for_single_key ... ok
[INFO] [stdout] test singular_update_queue::async_singular_update_queue::tests::test_get_with_insert_by_multiple_tasks ... ok
[INFO] [stdout] test linked_list::tests::test_add_and_check_for_a_missing_key ... ok
[INFO] [stdout] test singular_update_queue::singular_update_queue::tests::test_get_with_insert_by_a_single_task ... ok
[INFO] [stdout] test concurrency::sequential_sum::tests::test_sequential_sum ... ok
[INFO] [stdout] test linked_list::tests::test_add_and_count_for_keys ... ok
[INFO] [stdout] test employees::tests::test_find_employees_by_existing_id_1 ... ok
[INFO] [stdout] test cache::evicting_cache::tests::test_get_value_by_an_non_existing_key ... ok
[INFO] [stdout] test singular_update_queue::singular_update_queue::tests::test_get_with_insert_by_multiple_tasks ... ok
[INFO] [stdout] test singular_update_queue::singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks ... FAILED
[INFO] [stdout] test concurrency::async_sum::tests::test_async_sum ... ok
[INFO] [stdout] test cache::expiry::tests::test_an_expiry ... ok
[INFO] [stdout] test cache::evicting_worker::tests::test_eviction ... ok
[INFO] [stdout] test concurrency::concurrent_sum::tests::test_concurrent_sum ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- singular_update_queue::singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'singular_update_queue::singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks' (58) panicked at language/src/singular_update_queue/singular_update_queue.rs:206:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: None
[INFO] [stdout]  right: Some("value1")
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x58671b6c1bc2 - std::backtrace_rs::backtrace::libunwind::trace::h90e89fac33585832
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x58671b6c1bc2 - std::backtrace_rs::backtrace::trace_unsynchronized::heebcf2380a8e7359
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x58671b6c1bc2 - std::sys::backtrace::_print_fmt::hdf3e2a22d2f810db
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x58671b6c1bc2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hac1d885928ba8582
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x58671b6d2b27 - core::fmt::rt::Argument::fmt::h6901eb7c19abebe8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x58671b6d2b27 - core::fmt::write::h83ebb4d32483be9e
[INFO] [stdout]    6:     0x58671b690116 - std::io::default_write_fmt::h751a79cdae495f10
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x58671b690116 - std::io::Write::write_fmt::h9ef514f8700ff7b2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x58671b6a0c79 - std::sys::backtrace::BacktraceLock::print::hcc2e1a3ac996c911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x58671b6a0c79 - std::panicking::default_hook::{{closure}}::h8e9c4d1276f0925f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x58671b6a0b11 - std::panicking::default_hook::h2b2078d38b534dfb
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x58671b5be56e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h39d051e7dedac6a7
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x58671b5be56e - test::test_main_with_exit_callback::{{closure}}::h4b005fe75814c302
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x58671b6a0fa2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd426070722c13cbf
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x58671b6a0fa2 - std::panicking::panic_with_hook::h39b739724e701bfd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x58671b6a0d38 - std::panicking::panic_handler::{{closure}}::he540c4833054e458
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x58671b69bef9 - std::sys::backtrace::__rust_end_short_backtrace::hfa179d89deec8aed
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x58671b684e7d - __rustc[d131491b17107b07]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x58671b6da30c - core::panicking::panic_fmt::ha564519d657d9c46
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x58671b6da1c3 - core::panicking::assert_failed_inner::h6fc38e43be639d33
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:439:17
[INFO] [stdout]   20:     0x58671b52e44c - core::panicking::assert_failed::h0860b3d2fc48c50a
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:394:5
[INFO] [stdout]   21:     0x58671b50d64d - language::singular_update_queue::singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks::hb5f0b6f637a1232a
[INFO] [stdout]                                at /opt/rustwide/workdir/language/src/singular_update_queue/singular_update_queue.rs:206:9
[INFO] [stdout]   22:     0x58671b50d7a7 - language::singular_update_queue::singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks::{{closure}}::h1e6c1b12a219ea1e
[INFO] [stdout]                                at /opt/rustwide/workdir/language/src/singular_update_queue/singular_update_queue.rs:168:59
[INFO] [stdout]   23:     0x58671b526966 - core::ops::function::FnOnce::call_once::hb5bce91080832d1d
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x58671b5be39b - core::ops::function::FnOnce::call_once::h0217b30cfdee2e67
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x58671b5be39b - test::__rust_begin_short_backtrace::h6d98714a1e28f556
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x58671b5d1d2a - test::run_test_in_process::{{closure}}::he2c70d2634d3a3cc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x58671b5d1d2a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40a0a825bcf17fdd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x58671b5d1d2a - std::panicking::catch_unwind::do_call::h6c8eb5dd6e7b5975
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x58671b5d1d2a - std::panicking::catch_unwind::h55455eac2972ad1e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x58671b5d1d2a - std::panic::catch_unwind::h0025465150a5e558
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x58671b5d1d2a - test::run_test_in_process::hb61e682f9b630fbc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x58671b5d1d2a - test::run_test::{{closure}}::hc2c2a7a38ab176e2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x58671b5abfc4 - test::run_test::{{closure}}::ha91867b85cd2a911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x58671b5abfc4 - std::sys::backtrace::__rust_begin_short_backtrace::ha00a9fe02049c339
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   35:     0x58671b5af8f2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd629fba9153dfb55
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   36:     0x58671b5af8f2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4189018816a5c5d9
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x58671b5af8f2 - std::panicking::catch_unwind::do_call::hf9fcdbca3c2e9877
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x58671b5af8f2 - std::panicking::catch_unwind::h97b92d88631c7c64
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x58671b5af8f2 - std::panic::catch_unwind::ha77cdbb68e725e5e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x58671b5af8f2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h511f05bc1a132253
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   41:     0x58671b5af8f2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6b68b31e9b685cb8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x58671b69757f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h22a27d165e4e871d
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x58671b69757f - std::sys::thread::unix::Thread::new::thread_start::h45cc87bb053add0f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x757527425aa4 - <unknown>
[INFO] [stdout]   45:     0x7575274b2a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     singular_update_queue::singular_update_queue::tests::test_get_with_insert_and_delete_by_multiple_tasks
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 30 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 9.26s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p language --bin language`
[INFO] running `Command { std: "docker" "inspect" "9692fa1cce3676bec8ebd337f2d55815a3d6c0abcc6c037a8477145c9b8d2672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9692fa1cce3676bec8ebd337f2d55815a3d6c0abcc6c037a8477145c9b8d2672", kill_on_drop: false }`
[INFO] [stdout] 9692fa1cce3676bec8ebd337f2d55815a3d6c0abcc6c037a8477145c9b8d2672
