[INFO] cloning repository https://github.com/roackb2/rust_hello_world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/roackb2/rust_hello_world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froackb2%2Frust_hello_world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froackb2%2Frust_hello_world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1278126b3ebdb74560058615d4ed67646b7e8e87
[INFO] testing roackb2/rust_hello_world against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Froackb2%2Frust_hello_world" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/roackb2/rust_hello_world on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/roackb2/rust_hello_world
[INFO] finished tweaking git repo https://github.com/roackb2/rust_hello_world
[INFO] tweaked toml for git repo https://github.com/roackb2/rust_hello_world written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/roackb2/rust_hello_world already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.release.paic
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5dcaa74c829583afe3b8dd112489357e09f415368cf16cadda07583d0355b0d
[INFO] running `Command { std: "docker" "start" "-a" "f5dcaa74c829583afe3b8dd112489357e09f415368cf16cadda07583d0355b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5dcaa74c829583afe3b8dd112489357e09f415368cf16cadda07583d0355b0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5dcaa74c829583afe3b8dd112489357e09f415368cf16cadda07583d0355b0d", kill_on_drop: false }`
[INFO] [stdout] f5dcaa74c829583afe3b8dd112489357e09f415368cf16cadda07583d0355b0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7623cd788dfeb783cd3315f090156b338ba5289a1185478986b929331c0b32a2
[INFO] running `Command { std: "docker" "start" "-a" "7623cd788dfeb783cd3315f090156b338ba5289a1185478986b929331c0b32a2", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.release.paic
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling rust_hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::node::Node`
[INFO] [stdout]  --> src/bst/b_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::node::Node`
[INFO] [stdout]  --> src/bst/b_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::linked_list::test_list`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::linked_list::test_list;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/playground/error_handling.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Err(err) => panic!("Failed to read")
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/merkle_tree/node.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `txn`
[INFO] [stdout]   --> src/merkle_tree/node.rs:87:28
[INFO] [stdout]    |
[INFO] [stdout] 87 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_txn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/merkle_tree/node.rs:117:18
[INFO] [stdout]     |
[INFO] [stdout] 117 |       Node::Leaf(leaf) => (),
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/merkle_tree/utils.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/linked_list/list.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(value: i32) -> List {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/playground/collections.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |   let mut v = 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: variable does not need to be mutable
[INFO] [stdout]   --> src/merkle_tree/utils.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |   let mut state = DefaultHasher::new();
[INFO] [stdout]    |       ----^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `list::Node` in public interface (error E0446)
[INFO] [stdout]   --> src/linked_list/list.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |   More(Box<Node>)
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_list`
[INFO] [stdout]  --> src/linked_list/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test_list() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]  --> src/playground/structs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Color (i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Empty`
[INFO] [stdout]  --> src/playground/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Empty;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `direction`
[INFO] [stdout]   --> src/playground/enums.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   direction: TransferDirection,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Transaction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[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: `amount`
[INFO] [stdout]   --> src/playground/enums.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |   amount: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `attendant`
[INFO] [stdout]   --> src/playground/enums.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   attendant: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `direction`
[INFO] [stdout]   --> src/playground/enums.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   direction: TransferDirection,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `due_date`
[INFO] [stdout]   --> src/playground/enums.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   due_date: Date
[INFO] [stdout]    |   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `document_id`
[INFO] [stdout]   --> src/playground/enums.rs:39:3
[INFO] [stdout]    |
[INFO] [stdout] 39 |   document_id: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[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: `content`
[INFO] [stdout]   --> src/playground/enums.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   content: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[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: variant is never constructed: `Noop`
[INFO] [stdout]   --> src/playground/enums.rs:58:3
[INFO] [stdout]    |
[INFO] [stdout] 58 |   Noop,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Transfer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[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: `event_name`
[INFO] [stdout]  --> src/playground/collections.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   event_name: String,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `NotifyPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/playground/collections.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[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: `content`
[INFO] [stdout]   --> src/playground/collections.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   content: String
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `StreamPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/collections.rs:8:10
[INFO] [stdout]    |
[INFO] [stdout] 8  | #[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: function is never used: `read_file_simple`
[INFO] [stdout]  --> src/playground/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file_simple(path: &str) -> Result<String, io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `collect`
[INFO] [stdout]   --> src/bst/b_tree.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |   pub fn collect(
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `CollectCb`
[INFO] [stdout]  --> src/bst/types.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type CollectCb<T> = fn(&Node<T>, &mut Vec<T>);
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `collect`
[INFO] [stdout]   --> src/bst/node.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |   pub fn collect(
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `collect`
[INFO] [stdout]   --> src/bst/link.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |   pub fn collect(
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `TraverseCb`
[INFO] [stdout]  --> src/merkle_tree/node.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type TraverseCb = fn(&Node) -> bool;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/merkle_tree/node.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_child_hash`
[INFO] [stdout]   --> src/merkle_tree/node.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn get_child_hash(left: u64, right: u64) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> src/merkle_tree/node.rs:78:10
[INFO] [stdout]    |
[INFO] [stdout] 78 |   pub fn is_full(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Internal`
[INFO] [stdout]   --> src/merkle_tree/node.rs:96:3
[INFO] [stdout]    |
[INFO] [stdout] 96 |   Internal(Box<InternalNode>),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/merkle_tree/node.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[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: `insert`
[INFO] [stdout]    --> src/merkle_tree/node.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]    --> src/merkle_tree/node.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 |   pub fn is_full(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse`
[INFO] [stdout]    --> src/merkle_tree/node.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 |   pub fn traverse(&self, pre_cb: TraverseCb, in_cb: TraverseCb, post_cb: TraverseCb) {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_str_hash`
[INFO] [stdout]   --> src/merkle_tree/utils.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `List`
[INFO] [stdout]  --> src/linked_list/list.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct List {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/linked_list/list.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Link`
[INFO] [stdout]   --> src/linked_list/list.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Link {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/linked_list/list.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(value: i32) -> List {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.25s
[INFO] running `Command { std: "docker" "inspect" "7623cd788dfeb783cd3315f090156b338ba5289a1185478986b929331c0b32a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7623cd788dfeb783cd3315f090156b338ba5289a1185478986b929331c0b32a2", kill_on_drop: false }`
[INFO] [stdout] 7623cd788dfeb783cd3315f090156b338ba5289a1185478986b929331c0b32a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b76e50da43cc35c53a2d7fdfd67596efa87d38c4cd2f5c0f18443e5ebaa6305
[INFO] running `Command { std: "docker" "start" "-a" "0b76e50da43cc35c53a2d7fdfd67596efa87d38c4cd2f5c0f18443e5ebaa6305", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.release.paic
[INFO] [stderr]    Compiling rust_hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::node::Node`
[INFO] [stdout]  --> src/bst/b_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::node::Node`
[INFO] [stdout]  --> src/bst/b_tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::node::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::linked_list::test_list`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::linked_list::test_list;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/playground/error_handling.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Err(err) => panic!("Failed to read")
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/merkle_tree/node.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `txn`
[INFO] [stdout]   --> src/merkle_tree/node.rs:87:28
[INFO] [stdout]    |
[INFO] [stdout] 87 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_txn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/merkle_tree/node.rs:117:18
[INFO] [stdout]     |
[INFO] [stdout] 117 |       Node::Leaf(leaf) => (),
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/merkle_tree/utils.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/linked_list/list.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(value: i32) -> List {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/playground/collections.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |   let mut v = 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: variable does not need to be mutable
[INFO] [stdout]   --> src/merkle_tree/utils.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |   let mut state = DefaultHasher::new();
[INFO] [stdout]    |       ----^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `list::Node` in public interface (error E0446)
[INFO] [stdout]   --> src/linked_list/list.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |   More(Box<Node>)
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_list`
[INFO] [stdout]  --> src/linked_list/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test_list() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]  --> src/playground/structs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Color (i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Empty`
[INFO] [stdout]  --> src/playground/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Empty;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `direction`
[INFO] [stdout]   --> src/playground/enums.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   direction: TransferDirection,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Transaction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[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: `amount`
[INFO] [stdout]   --> src/playground/enums.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |   amount: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `attendant`
[INFO] [stdout]   --> src/playground/enums.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   attendant: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `direction`
[INFO] [stdout]   --> src/playground/enums.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   direction: TransferDirection,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `due_date`
[INFO] [stdout]   --> src/playground/enums.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   due_date: Date
[INFO] [stdout]    |   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `document_id`
[INFO] [stdout]   --> src/playground/enums.rs:39:3
[INFO] [stdout]    |
[INFO] [stdout] 39 |   document_id: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[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: `content`
[INFO] [stdout]   --> src/playground/enums.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   content: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[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: variant is never constructed: `Noop`
[INFO] [stdout]   --> src/playground/enums.rs:58:3
[INFO] [stdout]    |
[INFO] [stdout] 58 |   Noop,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Transfer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[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: `event_name`
[INFO] [stdout]  --> src/playground/collections.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   event_name: String,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `NotifyPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/playground/collections.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[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: `content`
[INFO] [stdout]   --> src/playground/collections.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   content: String
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `StreamPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/collections.rs:8:10
[INFO] [stdout]    |
[INFO] [stdout] 8  | #[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: function is never used: `read_file_simple`
[INFO] [stdout]  --> src/playground/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file_simple(path: &str) -> Result<String, io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `collect`
[INFO] [stdout]   --> src/bst/b_tree.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |   pub fn collect(
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `CollectCb`
[INFO] [stdout]  --> src/bst/types.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type CollectCb<T> = fn(&Node<T>, &mut Vec<T>);
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `collect`
[INFO] [stdout]   --> src/bst/node.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 38 |   pub fn collect(
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `collect`
[INFO] [stdout]   --> src/bst/link.rs:32:10
[INFO] [stdout]    |
[INFO] [stdout] 32 |   pub fn collect(
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `TraverseCb`
[INFO] [stdout]  --> src/merkle_tree/node.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type TraverseCb = fn(&Node) -> bool;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/merkle_tree/node.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_child_hash`
[INFO] [stdout]   --> src/merkle_tree/node.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn get_child_hash(left: u64, right: u64) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> src/merkle_tree/node.rs:78:10
[INFO] [stdout]    |
[INFO] [stdout] 78 |   pub fn is_full(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Internal`
[INFO] [stdout]   --> src/merkle_tree/node.rs:96:3
[INFO] [stdout]    |
[INFO] [stdout] 96 |   Internal(Box<InternalNode>),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/merkle_tree/node.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[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: `insert`
[INFO] [stdout]    --> src/merkle_tree/node.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]    --> src/merkle_tree/node.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 |   pub fn is_full(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse`
[INFO] [stdout]    --> src/merkle_tree/node.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 |   pub fn traverse(&self, pre_cb: TraverseCb, in_cb: TraverseCb, post_cb: TraverseCb) {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_str_hash`
[INFO] [stdout]   --> src/merkle_tree/utils.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `List`
[INFO] [stdout]  --> src/linked_list/list.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct List {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/linked_list/list.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Link`
[INFO] [stdout]   --> src/linked_list/list.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Link {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/linked_list/list.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(value: i32) -> List {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::linked_list::test_list`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::linked_list::test_list;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/playground/error_handling.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Err(err) => panic!("Failed to read")
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/merkle_tree/node.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `txn`
[INFO] [stdout]   --> src/merkle_tree/node.rs:87:28
[INFO] [stdout]    |
[INFO] [stdout] 87 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_txn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `leaf`
[INFO] [stdout]    --> src/merkle_tree/node.rs:117:18
[INFO] [stdout]     |
[INFO] [stdout] 117 |       Node::Leaf(leaf) => (),
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/merkle_tree/utils.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]   --> src/linked_list/list.rs:17:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(value: i32) -> List {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/playground/collections.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |   let mut v = 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: variable does not need to be mutable
[INFO] [stdout]   --> src/merkle_tree/utils.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |   let mut state = DefaultHasher::new();
[INFO] [stdout]    |       ----^^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `list::Node` in public interface (error E0446)
[INFO] [stdout]   --> src/linked_list/list.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |   More(Box<Node>)
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_list`
[INFO] [stdout]  --> src/linked_list/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn test_list() {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]  --> src/playground/structs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Color (i32, i32, i32);
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Empty`
[INFO] [stdout]  --> src/playground/structs.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Empty;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `direction`
[INFO] [stdout]   --> src/playground/enums.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   direction: TransferDirection,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Transaction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[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: `amount`
[INFO] [stdout]   --> src/playground/enums.rs:31:3
[INFO] [stdout]    |
[INFO] [stdout] 31 |   amount: u32,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `attendant`
[INFO] [stdout]   --> src/playground/enums.rs:32:3
[INFO] [stdout]    |
[INFO] [stdout] 32 |   attendant: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `direction`
[INFO] [stdout]   --> src/playground/enums.rs:33:3
[INFO] [stdout]    |
[INFO] [stdout] 33 |   direction: TransferDirection,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `due_date`
[INFO] [stdout]   --> src/playground/enums.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |   due_date: Date
[INFO] [stdout]    |   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[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: `document_id`
[INFO] [stdout]   --> src/playground/enums.rs:39:3
[INFO] [stdout]    |
[INFO] [stdout] 39 |   document_id: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[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: `content`
[INFO] [stdout]   --> src/playground/enums.rs:40:3
[INFO] [stdout]    |
[INFO] [stdout] 40 |   content: String,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:37:10
[INFO] [stdout]    |
[INFO] [stdout] 37 | #[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: variant is never constructed: `Noop`
[INFO] [stdout]   --> src/playground/enums.rs:58:3
[INFO] [stdout]    |
[INFO] [stdout] 58 |   Noop,
[INFO] [stdout]    |   ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Transfer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/enums.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 | #[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: `event_name`
[INFO] [stdout]  --> src/playground/collections.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   event_name: String,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `NotifyPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/playground/collections.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[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: `content`
[INFO] [stdout]   --> src/playground/collections.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   content: String
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `StreamPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/playground/collections.rs:8:10
[INFO] [stdout]    |
[INFO] [stdout] 8  | #[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: function is never used: `read_file_simple`
[INFO] [stdout]  --> src/playground/error_handling.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn read_file_simple(path: &str) -> Result<String, io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `TraverseCb`
[INFO] [stdout]  --> src/merkle_tree/node.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type TraverseCb = fn(&Node) -> bool;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/merkle_tree/node.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_child_hash`
[INFO] [stdout]   --> src/merkle_tree/node.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn get_child_hash(left: u64, right: u64) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> src/merkle_tree/node.rs:78:10
[INFO] [stdout]    |
[INFO] [stdout] 78 |   pub fn is_full(&self) -> bool {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Internal`
[INFO] [stdout]   --> src/merkle_tree/node.rs:96:3
[INFO] [stdout]    |
[INFO] [stdout] 96 |   Internal(Box<InternalNode>),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/merkle_tree/node.rs:93:10
[INFO] [stdout]    |
[INFO] [stdout] 93 | #[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: `insert`
[INFO] [stdout]    --> src/merkle_tree/node.rs:101:10
[INFO] [stdout]     |
[INFO] [stdout] 101 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]    --> src/merkle_tree/node.rs:108:10
[INFO] [stdout]     |
[INFO] [stdout] 108 |   pub fn is_full(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `traverse`
[INFO] [stdout]    --> src/merkle_tree/node.rs:115:10
[INFO] [stdout]     |
[INFO] [stdout] 115 |   pub fn traverse(&self, pre_cb: TraverseCb, in_cb: TraverseCb, post_cb: TraverseCb) {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_str_hash`
[INFO] [stdout]   --> src/merkle_tree/utils.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `List`
[INFO] [stdout]  --> src/linked_list/list.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct List {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Node`
[INFO] [stdout]  --> src/linked_list/list.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Link`
[INFO] [stdout]   --> src/linked_list/list.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Link {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/linked_list/list.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(value: i32) -> List {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "0b76e50da43cc35c53a2d7fdfd67596efa87d38c4cd2f5c0f18443e5ebaa6305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b76e50da43cc35c53a2d7fdfd67596efa87d38c4cd2f5c0f18443e5ebaa6305", kill_on_drop: false }`
[INFO] [stdout] 0b76e50da43cc35c53a2d7fdfd67596efa87d38c4cd2f5c0f18443e5ebaa6305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc1a96992ab61cf2971a0564ece0fae8b5befa7dfabe6361e2293b56f8e11a83
[INFO] running `Command { std: "docker" "start" "-a" "cc1a96992ab61cf2971a0564ece0fae8b5befa7dfabe6361e2293b56f8e11a83", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: profile.release.paic
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `super::node::Node`
[INFO] [stderr]  --> src/bst/b_tree.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::node::Node;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_hello_world` (lib) generated 1 warning
[INFO] [stderr] warning: unused import: `crate::linked_list::test_list`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::linked_list::test_list;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/playground/error_handling.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     Err(err) => panic!("Failed to read")
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/merkle_tree/node.rs:31:28
[INFO] [stderr]    |
[INFO] [stderr] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stderr]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `txn`
[INFO] [stderr]   --> src/merkle_tree/node.rs:87:28
[INFO] [stderr]    |
[INFO] [stderr] 87 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stderr]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_txn`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `leaf`
[INFO] [stderr]    --> src/merkle_tree/node.rs:117:18
[INFO] [stderr]     |
[INFO] [stderr] 117 |       Node::Leaf(leaf) => (),
[INFO] [stderr]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_leaf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/merkle_tree/utils.rs:15:30
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stderr]    |                              ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/linked_list/list.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 |   pub fn new(value: i32) -> List {
[INFO] [stderr]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/playground/collections.rs:50:7
[INFO] [stderr]    |
[INFO] [stderr] 50 |   let mut v = 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: variable does not need to be mutable
[INFO] [stderr]   --> src/merkle_tree/utils.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 |   let mut state = DefaultHasher::new();
[INFO] [stderr]    |       ----^^^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `list::Node` in public interface (error E0446)
[INFO] [stderr]   --> src/linked_list/list.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 |   More(Box<Node>)
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_list`
[INFO] [stderr]  --> src/linked_list/mod.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn test_list() {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Color`
[INFO] [stderr]  --> src/playground/structs.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Color (i32, i32, i32);
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Empty`
[INFO] [stderr]  --> src/playground/structs.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Empty;
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `direction`
[INFO] [stderr]   --> src/playground/enums.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   direction: TransferDirection,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Transaction` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | #[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: `amount`
[INFO] [stderr]   --> src/playground/enums.rs:31:3
[INFO] [stderr]    |
[INFO] [stderr] 31 |   amount: u32,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[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: `attendant`
[INFO] [stderr]   --> src/playground/enums.rs:32:3
[INFO] [stderr]    |
[INFO] [stderr] 32 |   attendant: String,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[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: `direction`
[INFO] [stderr]   --> src/playground/enums.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   direction: TransferDirection,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[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: `due_date`
[INFO] [stderr]   --> src/playground/enums.rs:34:3
[INFO] [stderr]    |
[INFO] [stderr] 34 |   due_date: Date
[INFO] [stderr]    |   ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `ScheduledPayment` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[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: `document_id`
[INFO] [stderr]   --> src/playground/enums.rs:39:3
[INFO] [stderr]    |
[INFO] [stderr] 39 |   document_id: String,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:37:10
[INFO] [stderr]    |
[INFO] [stderr] 37 | #[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: `content`
[INFO] [stderr]   --> src/playground/enums.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   content: String,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `File` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:37:10
[INFO] [stderr]    |
[INFO] [stderr] 37 | #[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: variant is never constructed: `Noop`
[INFO] [stderr]   --> src/playground/enums.rs:58:3
[INFO] [stderr]    |
[INFO] [stderr] 58 |   Noop,
[INFO] [stderr]    |   ^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Transfer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/enums.rs:53:10
[INFO] [stderr]    |
[INFO] [stderr] 53 | #[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: `event_name`
[INFO] [stderr]  --> src/playground/collections.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   event_name: String,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `NotifyPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/playground/collections.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[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: `content`
[INFO] [stderr]   --> src/playground/collections.rs:10:3
[INFO] [stderr]    |
[INFO] [stderr] 10 |   content: String
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `StreamPayload` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/playground/collections.rs:8:10
[INFO] [stderr]    |
[INFO] [stderr] 8  | #[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: function is never used: `read_file_simple`
[INFO] [stderr]  --> src/playground/error_handling.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn read_file_simple(path: &str) -> Result<String, io::Error> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `collect`
[INFO] [stderr]   --> src/bst/b_tree.rs:23:10
[INFO] [stderr]    |
[INFO] [stderr] 23 |   pub fn collect(
[INFO] [stderr]    |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `CollectCb`
[INFO] [stderr]  --> src/bst/types.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub type CollectCb<T> = fn(&Node<T>, &mut Vec<T>);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `collect`
[INFO] [stderr]   --> src/bst/node.rs:38:10
[INFO] [stderr]    |
[INFO] [stderr] 38 |   pub fn collect(
[INFO] [stderr]    |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `collect`
[INFO] [stderr]   --> src/bst/link.rs:32:10
[INFO] [stderr]    |
[INFO] [stderr] 32 |   pub fn collect(
[INFO] [stderr]    |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `TraverseCb`
[INFO] [stderr]  --> src/merkle_tree/node.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type TraverseCb = fn(&Node) -> bool;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]   --> src/merkle_tree/node.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 |   pub fn insert(&mut self, data: Transaction) -> bool {
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_child_hash`
[INFO] [stderr]   --> src/merkle_tree/node.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 52 | pub fn get_child_hash(left: u64, right: u64) -> u64 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_full`
[INFO] [stderr]   --> src/merkle_tree/node.rs:78:10
[INFO] [stderr]    |
[INFO] [stderr] 78 |   pub fn is_full(&self) -> bool {
[INFO] [stderr]    |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Internal`
[INFO] [stderr]   --> src/merkle_tree/node.rs:96:3
[INFO] [stderr]    |
[INFO] [stderr] 96 |   Internal(Box<InternalNode>),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Node` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/merkle_tree/node.rs:93:10
[INFO] [stderr]    |
[INFO] [stderr] 93 | #[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: `insert`
[INFO] [stderr]    --> src/merkle_tree/node.rs:101:10
[INFO] [stderr]     |
[INFO] [stderr] 101 |   pub fn insert(&mut self, txn: Transaction) -> bool {
[INFO] [stderr]     |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_full`
[INFO] [stderr]    --> src/merkle_tree/node.rs:108:10
[INFO] [stderr]     |
[INFO] [stderr] 108 |   pub fn is_full(&self) -> bool {
[INFO] [stderr]     |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `traverse`
[INFO] [stderr]    --> src/merkle_tree/node.rs:115:10
[INFO] [stderr]     |
[INFO] [stderr] 115 |   pub fn traverse(&self, pre_cb: TraverseCb, in_cb: TraverseCb, post_cb: TraverseCb) {
[INFO] [stderr]     |          ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_str_hash`
[INFO] [stderr]   --> src/merkle_tree/utils.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn get_str_hash<H: Hash>(s: &str, hasher: &H) -> u64 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `List`
[INFO] [stderr]  --> src/linked_list/list.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct List {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/linked_list/list.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Node {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Link`
[INFO] [stderr]   --> src/linked_list/list.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub enum Link {
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/linked_list/list.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 |   pub fn new(value: i32) -> List {
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::linked_list::test_list`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::linked_list::test_list;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust_hello_world` (bin "rust_hello_world") generated 42 warnings (1 duplicate)
[INFO] [stderr] warning: `rust_hello_world` (bin "rust_hello_world" test) generated 37 warnings (36 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_hello_world-e582ad0303fbf9a4)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_hello_world-6dd87f20cb11e038)
[INFO] [stdout] test bst::b_tree::tree_traversal::in_order ... ok
[INFO] [stdout] test bst::b_tree::tree_traversal::pre_order ... ok
[INFO] [stdout] test bst::b_tree::tree_traversal::post_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test playground::flow::tests::should_fail ... ignored
[INFO] [stdout] test playground::generics::tests::test_largest ... ok
[INFO] [stdout] test playground::flow::tests::test_add ... ok
[INFO] [stdout] test playground::generics::tests::upper_right ... ok
[INFO] [stdout] test bst::b_tree::tree_traversal::pre_order ... ok
[INFO] [stdout] test bst::b_tree::tree_traversal::in_order ... ok
[INFO] [stdout] test bst::b_tree::tree_traversal::post_order ... ok
[INFO] [stdout] test playground::generics::tests::upper_right_not_found - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bst_json.rs (/opt/rustwide/target/debug/deps/bst_json-53625f22fd06aab5)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tree_traversal::pre_order ... ok
[INFO] [stdout] test tree_traversal::post_order ... ok
[INFO] [stderr]    Doc-tests rust_hello_world
[INFO] [stdout] test tree_traversal::in_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [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" "cc1a96992ab61cf2971a0564ece0fae8b5befa7dfabe6361e2293b56f8e11a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1a96992ab61cf2971a0564ece0fae8b5befa7dfabe6361e2293b56f8e11a83", kill_on_drop: false }`
[INFO] [stdout] cc1a96992ab61cf2971a0564ece0fae8b5befa7dfabe6361e2293b56f8e11a83