[INFO] fetching crate rs_observable 0.1.4...
[INFO] building rs_observable-0.1.4 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate rs_observable 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rs_observable 0.1.4
[INFO] finished tweaking crates.io crate rs_observable 0.1.4
[INFO] tweaked toml for crates.io crate rs_observable 0.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rs_observable 0.1.4 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 76 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a3fc0bd56477816b3453a7c2d3c584684bd0f2f98b0f7634bbf59d074813769
[INFO] running `Command { std: "docker" "start" "-a" "4a3fc0bd56477816b3453a7c2d3c584684bd0f2f98b0f7634bbf59d074813769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a3fc0bd56477816b3453a7c2d3c584684bd0f2f98b0f7634bbf59d074813769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a3fc0bd56477816b3453a7c2d3c584684bd0f2f98b0f7634bbf59d074813769", kill_on_drop: false }`
[INFO] [stdout] 4a3fc0bd56477816b3453a7c2d3c584684bd0f2f98b0f7634bbf59d074813769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d97d8a3d856595d8a86fcf3c43dc558f3a4d38402129434346349416e2ace3c
[INFO] running `Command { std: "docker" "start" "-a" "9d97d8a3d856595d8a86fcf3c43dc558f3a4d38402129434346349416e2ace3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling rs_observable v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::observed_value::ObservedValue`
[INFO] [stdout]   --> src/observed_value.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use crate::observed_value::ObservedValue;
[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 doc comment
[INFO] [stdout]   --> src/chobservable.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |           /// creates a new object
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 44 | /         ChObservable {
[INFO] [stdout] 45 | |             observers: Arc::new(Mutex::new(Vec::new())),
[INFO] [stdout] 46 | |             next_id: 1,
[INFO] [stdout] 47 | |         }
[INFO] [stdout]    | |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `notify` is never used
[INFO] [stdout]   --> src/observable.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Observer<T: Clone> {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn notify(&mut self, data: T);
[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 `ObservedValue` is never constructed
[INFO] [stdout]  --> src/observed_value.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct ObservedValue<T: Clone> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_value`, `reset_value`, `register`, and `unregister` are never used
[INFO] [stdout]   --> src/observed_value.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<T: Clone> ObservedValue<T> {
[INFO] [stdout]    | ------------------------------- associated items in this implementation
[INFO] [stdout] 15 |     /// Create a new instance
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn set_value(&mut self, v: &T) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn reset_value(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn register(&mut self, observer: Rc<RefCell<dyn Observer<Option<T>> + Send + Sync>>) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn unregister(&mut self, observer_id: u32) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StoredObserver` is never constructed
[INFO] [stdout]   --> src/observable.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct StoredObserver<T: Clone> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/observable.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: Clone> StoredObserver<T> {
[INFO] [stdout]    | -------------------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(id: u32, observer: Rc<RefCell<dyn Observer<T> + Send + Sync>>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Observable` is never constructed
[INFO] [stdout]   --> src/observable.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Observable<T: Clone> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `register`, `unregister`, `notify_observers`, and `notify_observers_borrowed` are never used
[INFO] [stdout]   --> src/observable.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<T: Clone> Observable<T> {
[INFO] [stdout]    | ---------------------------- associated items in this implementation
[INFO] [stdout] 36 |     /// Creates a new Observable object
[INFO] [stdout] 37 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn register(&mut self, observer: Rc<RefCell<dyn Observer<T> + Send + Sync>>) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn unregister(&mut self, observer_id: u32) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn notify_observers(&self, data: T) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn notify_observers_borrowed(&self, data: &T) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyString` is never constructed
[INFO] [stdout]   --> src/observed_value.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 |     struct MyString(String);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/observed_value.rs:86:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |     impl MyString {
[INFO] [stdout]    |     ------------- associated function in this implementation
[INFO] [stdout] 86 |         pub fn new(v: &str) -> MyString {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObserverString` is never constructed
[INFO] [stdout]    --> src/observed_value.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 |     struct ObserverString {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/observed_value.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 107 |     impl ObserverString {
[INFO] [stdout]     |     ------------------- associated function in this implementation
[INFO] [stdout] 108 |         pub fn new() -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.34s
[INFO] running `Command { std: "docker" "inspect" "9d97d8a3d856595d8a86fcf3c43dc558f3a4d38402129434346349416e2ace3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d97d8a3d856595d8a86fcf3c43dc558f3a4d38402129434346349416e2ace3c", kill_on_drop: false }`
[INFO] [stdout] 9d97d8a3d856595d8a86fcf3c43dc558f3a4d38402129434346349416e2ace3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40ccfdac854eaaeb87f4af76a477576e92a963cc7d69924d10b0a60bc50c9c18
[INFO] running `Command { std: "docker" "start" "-a" "40ccfdac854eaaeb87f4af76a477576e92a963cc7d69924d10b0a60bc50c9c18", kill_on_drop: false }`
[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling anstream v0.6.20
[INFO] [stderr]    Compiling rs_observable v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::observed_value::ObservedValue`
[INFO] [stdout]   --> src/observed_value.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     use crate::observed_value::ObservedValue;
[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 doc comment
[INFO] [stdout]   --> src/chobservable.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |           /// creates a new object
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 44 | /         ChObservable {
[INFO] [stdout] 45 | |             observers: Arc::new(Mutex::new(Vec::new())),
[INFO] [stdout] 46 | |             next_id: 1,
[INFO] [stdout] 47 | |         }
[INFO] [stdout]    | |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObservedValue` is never constructed
[INFO] [stdout]  --> src/observed_value.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct ObservedValue<T: Clone> {
[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 `MyString` is never constructed
[INFO] [stdout]   --> src/observed_value.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 |     struct MyString(String);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/observed_value.rs:86:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |     impl MyString {
[INFO] [stdout]    |     ------------- associated function in this implementation
[INFO] [stdout] 86 |         pub fn new(v: &str) -> MyString {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ObserverString` is never constructed
[INFO] [stdout]    --> src/observed_value.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 103 |     struct ObserverString {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/observed_value.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 107 |     impl ObserverString {
[INFO] [stdout]     |     ------------------- associated function in this implementation
[INFO] [stdout] 108 |         pub fn new() -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_value`, `reset_value`, `register`, and `unregister` are never used
[INFO] [stdout]   --> src/observed_value.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<T: Clone> ObservedValue<T> {
[INFO] [stdout]    | ------------------------------- associated items in this implementation
[INFO] [stdout] 15 |     /// Create a new instance
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn set_value(&mut self, v: &T) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn reset_value(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn register(&mut self, observer: Rc<RefCell<dyn Observer<Option<T>> + Send + Sync>>) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn unregister(&mut self, observer_id: u32) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `notify` is never used
[INFO] [stdout]   --> src/observable.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub trait Observer<T: Clone> {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 10 |     fn notify(&mut self, data: T);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StoredObserver` is never constructed
[INFO] [stdout]   --> src/observable.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct StoredObserver<T: Clone> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/observable.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: Clone> StoredObserver<T> {
[INFO] [stdout]    | -------------------------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(id: u32, observer: Rc<RefCell<dyn Observer<T> + Send + Sync>>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Observable` is never constructed
[INFO] [stdout]   --> src/observable.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Observable<T: Clone> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `register`, `unregister`, `notify_observers`, and `notify_observers_borrowed` are never used
[INFO] [stdout]   --> src/observable.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<T: Clone> Observable<T> {
[INFO] [stdout]    | ---------------------------- associated items in this implementation
[INFO] [stdout] 36 |     /// Creates a new Observable object
[INFO] [stdout] 37 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn register(&mut self, observer: Rc<RefCell<dyn Observer<T> + Send + Sync>>) -> u32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn unregister(&mut self, observer_id: u32) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     pub fn notify_observers(&self, data: T) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn notify_observers_borrowed(&self, data: &T) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling env_filter v0.1.3
[INFO] [stderr]    Compiling env_logger v0.11.8
[INFO] [stdout] warning: unused import: `crate::observable::Observable`
[INFO] [stdout]    --> src/observed_value.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         use crate::observable::Observable;
[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 doc comment
[INFO] [stdout]   --> src/chobservable.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |           /// creates a new object
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 44 | /         ChObservable {
[INFO] [stdout] 45 | |             observers: Arc::new(Mutex::new(Vec::new())),
[INFO] [stdout] 46 | |             next_id: 1,
[INFO] [stdout] 47 | |         }
[INFO] [stdout]    | |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `notify_observers_borrowed` is never used
[INFO] [stdout]   --> src/observable.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<T: Clone> Observable<T> {
[INFO] [stdout]    | ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn notify_observers_borrowed(&self, data: &T) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "40ccfdac854eaaeb87f4af76a477576e92a963cc7d69924d10b0a60bc50c9c18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ccfdac854eaaeb87f4af76a477576e92a963cc7d69924d10b0a60bc50c9c18", kill_on_drop: false }`
[INFO] [stdout] 40ccfdac854eaaeb87f4af76a477576e92a963cc7d69924d10b0a60bc50c9c18
