[INFO] cloning repository https://github.com/nickx720/iteratorsrust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nickx720/iteratorsrust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fiteratorsrust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fiteratorsrust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bb14a7ca1c8d651d8861239bb2ca420f0de338cf
[INFO] testing nickx720/iteratorsrust_playground against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fiteratorsrust_playground" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nickx720/iteratorsrust_playground on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nickx720/iteratorsrust_playground
[INFO] finished tweaking git repo https://github.com/nickx720/iteratorsrust_playground
[INFO] tweaked toml for git repo https://github.com/nickx720/iteratorsrust_playground written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/nickx720/iteratorsrust_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15cf0c2f0b2758f80ffa9ebed969c93feb7ba47d432c07035ed6d59a8fc1ee40
[INFO] running `Command { std: "docker" "start" "-a" "15cf0c2f0b2758f80ffa9ebed969c93feb7ba47d432c07035ed6d59a8fc1ee40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15cf0c2f0b2758f80ffa9ebed969c93feb7ba47d432c07035ed6d59a8fc1ee40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15cf0c2f0b2758f80ffa9ebed969c93feb7ba47d432c07035ed6d59a8fc1ee40", kill_on_drop: false }`
[INFO] [stdout] 15cf0c2f0b2758f80ffa9ebed969c93feb7ba47d432c07035ed6d59a8fc1ee40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a63dd0fb100e5f51849cedf938c6e3cdc8f9c825cd3f78463bd780632781d38
[INFO] running `Command { std: "docker" "start" "-a" "0a63dd0fb100e5f51849cedf938c6e3cdc8f9c825cd3f78463bd780632781d38", kill_on_drop: false }`
[INFO] [stderr]    Compiling iterators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `Test_P` should have an upper camel case name
[INFO] [stdout]   --> src/self-referential/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Test_P {
[INFO] [stdout]    |        ^^^^^^ help: convert the identifier to upper camel case: `TestP`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/self-referential/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let a = Me::new(Rc::clone(&holder), "a");
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/self-referential/main.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let b = Me::new(Rc::clone(&holder), "b");
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Leaf`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Leaf(Item),
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Children`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Children(Vec<Node<Item>>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse`
[INFO] [stdout]  --> src/main.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn traverse(&self, f: impl Fn(&It)) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/self-referential/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Me` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/self-referential/main.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/self-referential/main.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     value: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Test_P` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/self-referential/main.rs:92:10
[INFO] [stdout]    |
[INFO] [stdout] 92 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pointer_to_value`
[INFO] [stdout]   --> src/self-referential/main.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pointer_to_value: *const String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Test_P` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/self-referential/main.rs:92:10
[INFO] [stdout]    |
[INFO] [stdout] 92 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/self-referential/main.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn new(txt: &str) -> Pin<Box<Self>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "0a63dd0fb100e5f51849cedf938c6e3cdc8f9c825cd3f78463bd780632781d38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a63dd0fb100e5f51849cedf938c6e3cdc8f9c825cd3f78463bd780632781d38", kill_on_drop: false }`
[INFO] [stdout] 0a63dd0fb100e5f51849cedf938c6e3cdc8f9c825cd3f78463bd780632781d38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40385b7a1aaa9a475439ce4610ef71ebb8c72a30bac3153fb2bb7c63401a7bb7
[INFO] running `Command { std: "docker" "start" "-a" "40385b7a1aaa9a475439ce4610ef71ebb8c72a30bac3153fb2bb7c63401a7bb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling iterators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `Test_P` should have an upper camel case name
[INFO] [stdout]   --> src/self-referential/main.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Test_P {
[INFO] [stdout]    |        ^^^^^^ help: convert the identifier to upper camel case: `TestP`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:249:9
[INFO] [stdout]     |
[INFO] [stdout] 249 |     let mut tree = Node::Children(vec![
[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: associated function is never used: `traverse`
[INFO] [stdout]  --> src/main.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn traverse(&self, f: impl Fn(&It)) {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/self-referential/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let a = Me::new(Rc::clone(&holder), "a");
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/self-referential/main.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |     let b = Me::new(Rc::clone(&holder), "b");
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/self-referential/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Me` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/self-referential/main.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/self-referential/main.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 94 |     value: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Test_P` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/self-referential/main.rs:92:10
[INFO] [stdout]    |
[INFO] [stdout] 92 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pointer_to_value`
[INFO] [stdout]   --> src/self-referential/main.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pointer_to_value: *const String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Test_P` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/self-referential/main.rs:92:10
[INFO] [stdout]    |
[INFO] [stdout] 92 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/self-referential/main.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn new(txt: &str) -> Pin<Box<Self>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/iterators-4902d08bb0dffa6f)
[INFO] [stderr]   Executable unittests src/self-referential/main.rs (/opt/rustwide/target/debug/deps/selfreference-e88f6e98ca1390ac)
[INFO] running `Command { std: "docker" "inspect" "40385b7a1aaa9a475439ce4610ef71ebb8c72a30bac3153fb2bb7c63401a7bb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40385b7a1aaa9a475439ce4610ef71ebb8c72a30bac3153fb2bb7c63401a7bb7", kill_on_drop: false }`
[INFO] [stdout] 40385b7a1aaa9a475439ce4610ef71ebb8c72a30bac3153fb2bb7c63401a7bb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6d9827c272ef3fb56abb4bf2e7a62a43312c67405ba1b6b8faedd4344aa6d3e9
[INFO] running `Command { std: "docker" "start" "-a" "6d9827c272ef3fb56abb4bf2e7a62a43312c67405ba1b6b8faedd4344aa6d3e9", kill_on_drop: false }`
[INFO] [stderr] warning: type `Test_P` should have an upper camel case name
[INFO] [stderr]   --> src/self-referential/main.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 | struct Test_P {
[INFO] [stderr]    |        ^^^^^^ help: convert the identifier to upper camel case: `TestP`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/self-referential/main.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 143 |     let a = Me::new(Rc::clone(&holder), "a");
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/self-referential/main.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |     let b = Me::new(Rc::clone(&holder), "b");
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `name`
[INFO] [stderr]   --> src/self-referential/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Me` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/self-referential/main.rs:24:10
[INFO] [stderr]    |
[INFO] [stderr] 24 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `value`
[INFO] [stderr]   --> src/self-referential/main.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 |     value: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Test_P` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/self-referential/main.rs:92:10
[INFO] [stderr]    |
[INFO] [stderr] 92 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pointer_to_value`
[INFO] [stderr]   --> src/self-referential/main.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pointer_to_value: *const String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Test_P` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/self-referential/main.rs:92:10
[INFO] [stderr]    |
[INFO] [stderr] 92 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/self-referential/main.rs:100:8
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn new(txt: &str) -> Pin<Box<Self>> {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `iterators` (bin "selfreference" test) generated 7 warnings
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:249:9
[INFO] [stderr]     |
[INFO] [stderr] 249 |     let mut tree = Node::Children(vec![
[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: associated function is never used: `traverse`
[INFO] [stderr]  --> src/main.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn traverse(&self, f: impl Fn(&It)) {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `iterators` (bin "iterators" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/iterators-4902d08bb0dffa6f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_borrowing_for_loop ... ok
[INFO] [stdout] test test_borrowing_for_node_loop ... ok
[INFO] [stdout] test test_borrowing_iter ... ok
[INFO] [stdout] test test_borrowing_mut_for_node_loop ... ok
[INFO] [stdout] test test_borrowing_mut_node_iter ... ok
[INFO] [stdout] test test_borrowing_node_iter ... 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/self-referential/main.rs (/opt/rustwide/target/debug/deps/selfreference-e88f6e98ca1390ac)
[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] running `Command { std: "docker" "inspect" "6d9827c272ef3fb56abb4bf2e7a62a43312c67405ba1b6b8faedd4344aa6d3e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d9827c272ef3fb56abb4bf2e7a62a43312c67405ba1b6b8faedd4344aa6d3e9", kill_on_drop: false }`
[INFO] [stdout] 6d9827c272ef3fb56abb4bf2e7a62a43312c67405ba1b6b8faedd4344aa6d3e9