[INFO] cloning repository https://github.com/yeqf911/learn_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yeqf911/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeqf911%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeqf911%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a039acc49828047a409b581a0a8d8792ae3107b
[INFO] testing yeqf911/learn_rust against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeqf911%2Flearn_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yeqf911/learn_rust on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yeqf911/learn_rust
[INFO] finished tweaking git repo https://github.com/yeqf911/learn_rust
[INFO] tweaked toml for git repo https://github.com/yeqf911/learn_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yeqf911/learn_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f358122898ee4a839764f9ca0bf958c2d1533f3796f840223c9dab82d10da48
[INFO] running `Command { std: "docker" "start" "-a" "6f358122898ee4a839764f9ca0bf958c2d1533f3796f840223c9dab82d10da48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f358122898ee4a839764f9ca0bf958c2d1533f3796f840223c9dab82d10da48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f358122898ee4a839764f9ca0bf958c2d1533f3796f840223c9dab82d10da48", kill_on_drop: false }`
[INFO] [stdout] 6f358122898ee4a839764f9ca0bf958c2d1533f3796f840223c9dab82d10da48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97e74fee804a251e5bc3da44e3dfe711a99d79b0eab9fc5890b34652f1238e09
[INFO] running `Command { std: "docker" "start" "-a" "97e74fee804a251e5bc3da44e3dfe711a99d79b0eab9fc5890b34652f1238e09", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collection::string`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use collection::string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collection::vector`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use collection::vector;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/collection/map.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let key = e.key();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vref`
[INFO] [stdout]   --> src/collection/map.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let vref = e.or_insert(0);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vref`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vs`
[INFO] [stdout]   --> src/collection/vector.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let vs = vec![s1, s2, s3];
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_vs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/collection/vector.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let first = &v[0];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/learn_enum.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         aaaa => println!("hello ssd"),
[INFO] [stdout]    |         ---- matches any value
[INFO] [stdout] 63 |         bbbb => println!("world dsda"),
[INFO] [stdout]    |         ^^^^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/learn_enum.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut count = 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/learn_enum.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         count += 1;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aaaa`
[INFO] [stdout]   --> src/learn_enum.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         aaaa => println!("hello ssd"),
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_aaaa`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bbbb`
[INFO] [stdout]   --> src/learn_enum.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         bbbb => println!("world dsda"),
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_bbbb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/collection/string.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/collection/vector.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Int`, `Float`, `Text`, and `Other` are never constructed
[INFO] [stdout]   --> src/collection/vector.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | enum DifferentType<T> {
[INFO] [stdout]    |      ------------- variants in this enum
[INFO] [stdout] 76 |     Int(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 77 |     Float(f64),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 78 |     Text(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 79 |     Other(T),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DifferentType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/learn_enum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/learn_enum.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stdout]   --> src/learn_enum.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | enum UsState {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 76 |     Alabama,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 77 |     Alaska,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/learn_enum.rs:80:6
[INFO] [stdout]    |
[INFO] [stdout] 80 | enum Coin {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/learn_enum.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]    --> src/learn_enum.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 103 | enum IpAddrKind {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 104 |     V4,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 105 |     V6,
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]    --> src/learn_enum.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | enum MyIpAddr {
[INFO] [stdout]     |      -------- variants in this enum
[INFO] [stdout] 110 |     V4(String),
[INFO] [stdout]     |     ^^
[INFO] [stdout] 111 |     V6(String),
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MyIpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]    --> src/learn_enum.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | enum Address {
[INFO] [stdout]     |      ------- variants in this enum
[INFO] [stdout] 116 |     V4(u8, u8, u8, u8),
[INFO] [stdout]     |     ^^
[INFO] [stdout] 117 |     V6(String),
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Address` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/learn_struct.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `age`, `email`, and `sign_in_count` are never read
[INFO] [stdout]   --> src/learn_struct.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct User {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 32 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     age: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 34 |     email: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 35 |     sign_in_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/learn_struct.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl User {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 45 |     fn new(name: String, age: usize) -> User {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "97e74fee804a251e5bc3da44e3dfe711a99d79b0eab9fc5890b34652f1238e09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e74fee804a251e5bc3da44e3dfe711a99d79b0eab9fc5890b34652f1238e09", kill_on_drop: false }`
[INFO] [stdout] 97e74fee804a251e5bc3da44e3dfe711a99d79b0eab9fc5890b34652f1238e09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa353a636bcd9ace76c1798280e2520050da49541af8e901daa7b78c0ea3bb3f
[INFO] running `Command { std: "docker" "start" "-a" "fa353a636bcd9ace76c1798280e2520050da49541af8e901daa7b78c0ea3bb3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collection::string`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use collection::string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collection::vector`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use collection::vector;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/collection/map.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let key = e.key();
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vref`
[INFO] [stdout]   --> src/collection/map.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let vref = e.or_insert(0);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vref`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vs`
[INFO] [stdout]   --> src/collection/vector.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let vs = vec![s1, s2, s3];
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_vs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/collection/vector.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let first = &v[0];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/learn_enum.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         aaaa => println!("hello ssd"),
[INFO] [stdout]    |         ---- matches any value
[INFO] [stdout] 63 |         bbbb => println!("world dsda"),
[INFO] [stdout]    |         ^^^^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `count` is assigned to, but never used
[INFO] [stdout]   --> src/learn_enum.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut count = 1;
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/learn_enum.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         count += 1;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aaaa`
[INFO] [stdout]   --> src/learn_enum.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         aaaa => println!("hello ssd"),
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_aaaa`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bbbb`
[INFO] [stdout]   --> src/learn_enum.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         bbbb => println!("world dsda"),
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_bbbb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/collection/string.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/collection/vector.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Int`, `Float`, `Text`, and `Other` are never constructed
[INFO] [stdout]   --> src/collection/vector.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | enum DifferentType<T> {
[INFO] [stdout]    |      ------------- variants in this enum
[INFO] [stdout] 76 |     Int(i32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 77 |     Float(f64),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 78 |     Text(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 79 |     Other(T),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DifferentType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/learn_enum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/learn_enum.rs:67:4
[INFO] [stdout]    |
[INFO] [stdout] 67 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stdout]   --> src/learn_enum.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 75 | enum UsState {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 76 |     Alabama,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 77 |     Alaska,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Coin` is never used
[INFO] [stdout]   --> src/learn_enum.rs:80:6
[INFO] [stdout]    |
[INFO] [stdout] 80 | enum Coin {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `value_in_cents` is never used
[INFO] [stdout]   --> src/learn_enum.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]    --> src/learn_enum.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 103 | enum IpAddrKind {
[INFO] [stdout]     |      ---------- variants in this enum
[INFO] [stdout] 104 |     V4,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 105 |     V6,
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]    --> src/learn_enum.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | enum MyIpAddr {
[INFO] [stdout]     |      -------- variants in this enum
[INFO] [stdout] 110 |     V4(String),
[INFO] [stdout]     |     ^^
[INFO] [stdout] 111 |     V6(String),
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `MyIpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `V4` and `V6` are never constructed
[INFO] [stdout]    --> src/learn_enum.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | enum Address {
[INFO] [stdout]     |      ------- variants in this enum
[INFO] [stdout] 116 |     V4(u8, u8, u8, u8),
[INFO] [stdout]     |     ^^
[INFO] [stdout] 117 |     V6(String),
[INFO] [stdout]     |     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Address` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/learn_struct.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn run() {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `age`, `email`, and `sign_in_count` are never read
[INFO] [stdout]   --> src/learn_struct.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct User {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 32 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 33 |     age: usize,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 34 |     email: String,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 35 |     sign_in_count: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/learn_struct.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl User {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 45 |     fn new(name: String, age: usize) -> User {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "fa353a636bcd9ace76c1798280e2520050da49541af8e901daa7b78c0ea3bb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa353a636bcd9ace76c1798280e2520050da49541af8e901daa7b78c0ea3bb3f", kill_on_drop: false }`
[INFO] [stdout] fa353a636bcd9ace76c1798280e2520050da49541af8e901daa7b78c0ea3bb3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 96df5dd5f301b75417dbd6871face25e5d18ad1af22842b10a2d02e1b6d490f0
[INFO] running `Command { std: "docker" "start" "-a" "96df5dd5f301b75417dbd6871face25e5d18ad1af22842b10a2d02e1b6d490f0", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `collection::string`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use collection::string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `collection::vector`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use collection::vector;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/collection/map.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let key = e.key();
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vref`
[INFO] [stderr]   --> src/collection/map.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let vref = e.or_insert(0);
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_vref`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vs`
[INFO] [stderr]   --> src/collection/vector.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let vs = vec![s1, s2, s3];
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_vs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `first`
[INFO] [stderr]   --> src/collection/vector.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let first = &v[0];
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/learn_enum.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         aaaa => println!("hello ssd"),
[INFO] [stderr]    |         ---- matches any value
[INFO] [stderr] 63 |         bbbb => println!("world dsda"),
[INFO] [stderr]    |         ^^^^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `count` is assigned to, but never used
[INFO] [stderr]   --> src/learn_enum.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut count = 1;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_count` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/learn_enum.rs:56:9
[INFO] [stderr]    |
[INFO] [stderr] 56 |         count += 1;
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `aaaa`
[INFO] [stderr]   --> src/learn_enum.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 62 |         aaaa => println!("hello ssd"),
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_aaaa`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bbbb`
[INFO] [stderr]   --> src/learn_enum.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         bbbb => println!("world dsda"),
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_bbbb`
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]  --> src/collection/string.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]  --> src/collection/vector.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Int`, `Float`, `Text`, and `Other` are never constructed
[INFO] [stderr]   --> src/collection/vector.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 75 | enum DifferentType<T> {
[INFO] [stderr]    |      ------------- variants in this enum
[INFO] [stderr] 76 |     Int(i32),
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 77 |     Float(f64),
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 78 |     Text(String),
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 79 |     Other(T),
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DifferentType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]  --> src/learn_enum.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `plus_one` is never used
[INFO] [stderr]   --> src/learn_enum.rs:67:4
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn plus_one(x: Option<i32>) -> Option<i32> {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `Alabama` and `Alaska` are never constructed
[INFO] [stderr]   --> src/learn_enum.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 75 | enum UsState {
[INFO] [stderr]    |      ------- variants in this enum
[INFO] [stderr] 76 |     Alabama,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 77 |     Alaska,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `UsState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Coin` is never used
[INFO] [stderr]   --> src/learn_enum.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 | enum Coin {
[INFO] [stderr]    |      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `value_in_cents` is never used
[INFO] [stderr]   --> src/learn_enum.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn value_in_cents(coin: Coin) -> u8 {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variants `V4` and `V6` are never constructed
[INFO] [stderr]    --> src/learn_enum.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 103 | enum IpAddrKind {
[INFO] [stderr]     |      ---------- variants in this enum
[INFO] [stderr] 104 |     V4,
[INFO] [stderr]     |     ^^
[INFO] [stderr] 105 |     V6,
[INFO] [stderr]     |     ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `IpAddrKind` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `V4` and `V6` are never constructed
[INFO] [stderr]    --> src/learn_enum.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 109 | enum MyIpAddr {
[INFO] [stderr]     |      -------- variants in this enum
[INFO] [stderr] 110 |     V4(String),
[INFO] [stderr]     |     ^^
[INFO] [stderr] 111 |     V6(String),
[INFO] [stderr]     |     ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `MyIpAddr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: variants `V4` and `V6` are never constructed
[INFO] [stderr]    --> src/learn_enum.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 115 | enum Address {
[INFO] [stderr]     |      ------- variants in this enum
[INFO] [stderr] 116 |     V4(u8, u8, u8, u8),
[INFO] [stderr]     |     ^^
[INFO] [stderr] 117 |     V6(String),
[INFO] [stderr]     |     ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `Address` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: function `run` is never used
[INFO] [stderr]  --> src/learn_struct.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn run() {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `name`, `age`, `email`, and `sign_in_count` are never read
[INFO] [stderr]   --> src/learn_struct.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 31 | struct User {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 32 |     name: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 33 |     age: usize,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 34 |     email: String,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 35 |     sign_in_count: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `User` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/learn_struct.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | impl User {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] 45 |     fn new(name: String, age: usize) -> User {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `learn_rust` (bin "learn_rust" test) generated 25 warnings (run `cargo fix --bin "learn_rust" --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn_rust-3f3e3e1e5d2be427)
[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" "96df5dd5f301b75417dbd6871face25e5d18ad1af22842b10a2d02e1b6d490f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96df5dd5f301b75417dbd6871face25e5d18ad1af22842b10a2d02e1b6d490f0", kill_on_drop: false }`
[INFO] [stdout] 96df5dd5f301b75417dbd6871face25e5d18ad1af22842b10a2d02e1b6d490f0
