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[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zibilal/my-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzibilal%2Fmy-learning", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19469f97791091c680cb5e91c6acdeed8dda3b9b
[INFO] checking zibilal/my-learning against 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d for pr-159598
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzibilal%2Fmy-learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zibilal/my-learning
[INFO] finished tweaking git repo https://github.com/zibilal/my-learning
[INFO] tweaked toml for git repo https://github.com/zibilal/my-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zibilal/my-learning on toolchain 4a9d5368df6450bbd2fc8dde4508c3e5d83bb19d
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[INFO] crate git repo https://github.com/zibilal/my-learning already has a lockfile, it will not be regenerated
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
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[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]  --> src/lib.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub enum List {
[INFO] [stdout]   |              ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]  --> src/lib.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 |     pub enum List {
[INFO] [stdout]   |              ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]   --> src/lib.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub struct Shoe {
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `shoe_in_size` is never used
[INFO] [stdout]   --> src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn shoe_in_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_string` is never used
[INFO] [stdout]  --> src/bin/ex_reversing_string_1.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn reverse_string(s: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `url` and `method` are never read
[INFO] [stdout]  --> src/bin/abuilder1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct RequestBuilder {
[INFO] [stdout]   |        -------------- fields in this struct
[INFO] [stdout] 3 |     url: String,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     method: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RequestBuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/bin/refcount.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 5 -     Cons(i32, Rc<List>),
[INFO] [stdout] 5 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_string` is never used
[INFO] [stdout]  --> src/bin/ex_reversing_string_1.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn reverse_string(s: &str) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `children` are never read
[INFO] [stdout]   --> src/bin/tree01.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct Node {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout]  8 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     parent: RefCell<Weak<Node>>,
[INFO] [stdout] 10 |     children: RefCell<Vec<Rc<Node>>>,
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]  --> src/bin/recursive_type.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum List {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `print` are never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl List {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout]  9 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn push(self, val: i32) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/bin/recursive_type.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct TreeNode {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `in_order`, and `search` are never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl TreeNode {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 42 |     fn new(value: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn insert(node: Option<Box<TreeNode>>, val: i32) -> Box<TreeNode> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn in_order(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn search(&self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `JSONValue` is never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:84:6
[INFO] [stdout]    |
[INFO] [stdout] 84 | enum JSONValue {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl JSONValue {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 91 |     fn print(&self, indent: usize) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `height` is never read
[INFO] [stdout]  --> src/bin/func_feats4.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        --------- field in this struct
[INFO] [stdout] 3 |     width: u32,
[INFO] [stdout] 4 |     height: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `value` and `children` are never read
[INFO] [stdout]   --> src/bin/tree01.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | struct Node {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout]  8 |     value: i32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     parent: RefCell<Weak<Node>>,
[INFO] [stdout] 10 |     children: RefCell<Vec<Rc<Node>>>,
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/bin/refcount.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Cons(i32, Rc<List>),
[INFO] [stdout]   |     ---- ^^^  ^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `List` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 5 -     Cons(i32, Rc<List>),
[INFO] [stdout] 5 +     Cons((), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `url` and `method` are never read
[INFO] [stdout]  --> src/bin/abuilder1.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct RequestBuilder {
[INFO] [stdout]   |        -------------- fields in this struct
[INFO] [stdout] 3 |     url: String,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 4 |     method: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `RequestBuilder` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `height` is never read
[INFO] [stdout]  --> src/bin/func_feats4.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Rectangle {
[INFO] [stdout]   |        --------- field in this struct
[INFO] [stdout] 3 |     width: u32,
[INFO] [stdout] 4 |     height: u32,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Rectangle` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `List` is never used
[INFO] [stdout]  --> src/bin/recursive_type.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | enum List {
[INFO] [stdout]   |      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, and `print` are never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl List {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout]  9 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn push(self, val: i32) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/bin/recursive_type.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct TreeNode {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `in_order`, and `search` are never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl TreeNode {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 42 |     fn new(value: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn insert(node: Option<Box<TreeNode>>, val: i32) -> Box<TreeNode> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn in_order(&self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 71 |     fn search(&self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `JSONValue` is never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:84:6
[INFO] [stdout]    |
[INFO] [stdout] 84 | enum JSONValue {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/bin/recursive_type.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl JSONValue {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 91 |     fn print(&self, indent: usize) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "a4eeebcdd4bb487a82f4cb22beb38933fb490c77f89c49910a0a5133ce618fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4eeebcdd4bb487a82f4cb22beb38933fb490c77f89c49910a0a5133ce618fc2", kill_on_drop: false }`
[INFO] [stdout] a4eeebcdd4bb487a82f4cb22beb38933fb490c77f89c49910a0a5133ce618fc2
