[INFO] cloning repository https://github.com/kingstar718/rust_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kingstar718/rust_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingstar718%2Frust_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingstar718%2Frust_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38e8e6b3207c9954cd2c0ccae45ec8eba3342eb9
[INFO] testing kingstar718/rust_learning against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_in_2025-retry-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkingstar718%2Frust_learning" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kingstar718/rust_learning
[INFO] finished tweaking git repo https://github.com/kingstar718/rust_learning
[INFO] tweaked toml for git repo https://github.com/kingstar718/rust_learning written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kingstar718/rust_learning on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kingstar718/rust_learning 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5844e87305048afc5055a9c49d619e82462d8bef26f675f15842720e0caf3a01
[INFO] running `Command { std: "docker" "start" "-a" "5844e87305048afc5055a9c49d619e82462d8bef26f675f15842720e0caf3a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5844e87305048afc5055a9c49d619e82462d8bef26f675f15842720e0caf3a01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5844e87305048afc5055a9c49d619e82462d8bef26f675f15842720e0caf3a01", kill_on_drop: false }`
[INFO] [stdout] 5844e87305048afc5055a9c49d619e82462d8bef26f675f15842720e0caf3a01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 0c63d9c2e82bbfc6ece12e13c27223691b61ade674ba14c29faada6ccb0d346a
[INFO] running `Command { std: "docker" "start" "-a" "0c63d9c2e82bbfc6ece12e13c27223691b61ade674ba14c29faada6ccb0d346a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `string_delete`, `string_push`, and `string_utf_8`
[INFO] [stdout]  --> src/string_operate/test.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::string_operate::{string_delete, string_push, string_utf_8};
[INFO] [stdout]   |                             ^^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `attach_tuple`, `match_tuple`, and `use_tuple_return`
[INFO] [stdout]  --> src/tuple_demo/test.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::tuple_demo::{attach_tuple, match_tuple, use_tuple_return};
[INFO] [stdout]   |                         ^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `create_file`, `create_user`, and `struct_display`
[INFO] [stdout]  --> src/struct_demo/test.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::struct_demo::{create_file, create_user, struct_display};
[INFO] [stdout]   |                          ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::method_demo::get_radius`
[INFO] [stdout]  --> src/method_demo/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::method_demo::get_radius;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::generics_demo::generics_demo::add`
[INFO] [stdout]  --> src/generics_demo/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::generics_demo::generics_demo::add;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Summary`, `display_array2`, `display_array`, `get_point_x`, and `largest`
[INFO] [stdout]  --> src/generics_demo/test.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::generics_demo::{display_array, display_array2, get_point_x, largest, Summary};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Post` and `Weibo`
[INFO] [stdout]  --> src/generics_demo/test.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::generics_demo::trait_demo::{Post, Weibo};
[INFO] [stdout]   |                                        ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `batch_use`, `create_hash_map`, `create_vec`, `get_from_hash_map`, `hash_map_life_time`, `read_vec`, `trait_diff_vec`, and `update_hash_map`
[INFO] [stdout]  --> src/collect_demo/test.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...demo::{batch_use, create_hash_map, create_vec, get_from_hash_map, hash_map_life_time, read_vec, trait_diff_vec, update_hash_map};
[INFO] [stdout]   |           ^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs`
[INFO] [stdout]  --> src/return_error_demo/return_error_demo.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{fs, io};
[INFO] [stdout]   |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::return_error_demo::read_username_from_file`
[INFO] [stdout]  --> src/return_error_demo/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::return_error_demo::read_username_from_file;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string_2`
[INFO] [stdout]   --> src/string_demo/string_demo.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let string_2 = "hello world".to_string();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_string_2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]   --> src/string_demo/string_demo.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     let s1 = String::from("hello");
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/tuple_demo/tuple_demo.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let (x, y, z) = tup;
[INFO] [stdout]   |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]  --> src/tuple_demo/tuple_demo.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let (x, y, z) = tup;
[INFO] [stdout]   |                ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `black`
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let black = Color(0, 0, 0);
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `origin`
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let origin = Point(0, 0, 0);
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_origin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `subject`
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let subject = AlwaysEqual;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_subject`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first`
[INFO] [stdout]   --> src/collect_demo/collect_demo.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let first = &v[0];
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_first`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `string_utf_8` is never used
[INFO] [stdout]   --> src/string_operate/string_operate.rs:97:8
[INFO] [stdout]    |
[INFO] [stdout] 97 | pub fn string_utf_8() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_tuple` is never used
[INFO] [stdout]  --> src/tuple_demo/tuple_demo.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn match_tuple() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `attach_tuple` is never used
[INFO] [stdout]  --> src/tuple_demo/tuple_demo.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn attach_tuple() {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `use_tuple_return` is never used
[INFO] [stdout]   --> src/tuple_demo/tuple_demo.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn use_tuple_return() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_length` is never used
[INFO] [stdout]   --> src/tuple_demo/tuple_demo.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn calculate_length(s: String) -> (String, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User` is never constructed
[INFO] [stdout]  --> src/struct_demo/struct_demo.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct User {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_user` is never used
[INFO] [stdout]  --> src/struct_demo/struct_demo.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn create_user() {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_user` is never used
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn build_user(email: String, username: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `File` is never constructed
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct File {
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_file` is never used
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn create_file() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tuple_struct` is never used
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub fn tuple_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unit_like_struct` is never used
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn unit_like_struct() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `User2` is never constructed
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct User2<'a> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `struct_display` is never used
[INFO] [stdout]   --> src/struct_demo/struct_demo.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn struct_display() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Circle` is never constructed
[INFO] [stdout]  --> src/method_demo/method_demo.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Circle {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `area`, and `radius` are never used
[INFO] [stdout]   --> src/method_demo/method_demo.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl Circle {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn new(x: f64, y: f64, radius: f64) -> Circle {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn radius(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `can_hold` is never used
[INFO] [stdout]   --> src/method_demo/method_demo.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Circle {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 51 |     fn can_hold(&self, other: &Circle) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_radius` is never used
[INFO] [stdout]   --> src/method_demo/method_demo.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn get_radius() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/method_demo/method_demo.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl Message {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 71 |     fn call(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `largest` is never used
[INFO] [stdout]  --> src/generics_demo/generics_demo.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn largest<T: std::cmp::PartialOrd + Copy>(list: &[T]) -> T {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/generics_demo/generics_demo.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn add<T: std::ops::Add<Output=T>>(a: T, b: T) -> T {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/generics_demo/generics_demo.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Point<T> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `x` is never used
[INFO] [stdout]   --> src/generics_demo/generics_demo.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl<T> Point<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 24 |     fn x(&self) -> &T {
[INFO] [stdout]    |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_point_x` is never used
[INFO] [stdout]   --> src/generics_demo/generics_demo.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn get_point_x() {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_array` is never used
[INFO] [stdout]   --> src/generics_demo/generics_demo.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn display_array<T: std::fmt::Debug>(arr: &[T]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `display_array2` is never used
[INFO] [stdout]   --> src/generics_demo/generics_demo.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn display_array2<T: std::fmt::Debug, const N: usize>(arr: [T; N]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Summary` is never used
[INFO] [stdout]  --> src/generics_demo/trait_demo.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait Summary {
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Post` is never constructed
[INFO] [stdout]  --> src/generics_demo/trait_demo.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Post {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Weibo` is never constructed
[INFO] [stdout]   --> src/generics_demo/trait_demo.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Weibo {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `notify` is never used
[INFO] [stdout]   --> src/generics_demo/trait_demo.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn notify(item: &impl Summary) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_vec` is never used
[INFO] [stdout]  --> src/collect_demo/collect_demo.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn create_vec() {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_vec` is never used
[INFO] [stdout]   --> src/collect_demo/collect_demo.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn read_vec() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `batch_use` is never used
[INFO] [stdout]   --> src/collect_demo/collect_demo.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn batch_use() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trait_diff_vec` is never used
[INFO] [stdout]   --> src/collect_demo/collect_demo.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn trait_diff_vec() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_hash_map` is never used
[INFO] [stdout]  --> src/collect_demo/hash_map_demo.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn create_hash_map() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash_map_life_time` is never used
[INFO] [stdout]   --> src/collect_demo/hash_map_demo.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn hash_map_life_time() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_from_hash_map` is never used
[INFO] [stdout]   --> src/collect_demo/hash_map_demo.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn get_from_hash_map() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_hash_map` is never used
[INFO] [stdout]   --> src/collect_demo/hash_map_demo.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn update_hash_map() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_username_from_file` is never used
[INFO] [stdout]  --> src/return_error_demo/return_error_demo.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn read_username_from_file() -> Result<String, io::Error> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `short_handle` is never used
[INFO] [stdout]   --> src/return_error_demo/return_error_demo.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn short_handle() -> Result<String, io::Error>{
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first` is never used
[INFO] [stdout]   --> src/return_error_demo/return_error_demo.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn first(arr: &[i32]) -> Option<i32>{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `last_char_of_first_line` is never used
[INFO] [stdout]   --> src/return_error_demo/return_error_demo.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn last_char_of_first_line(text: &str) -> Option<char> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `try_demo` is never used
[INFO] [stdout]   --> src/return_error_demo/return_error_demo.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn try_demo() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "0c63d9c2e82bbfc6ece12e13c27223691b61ade674ba14c29faada6ccb0d346a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c63d9c2e82bbfc6ece12e13c27223691b61ade674ba14c29faada6ccb0d346a", kill_on_drop: false }`
[INFO] [stdout] 0c63d9c2e82bbfc6ece12e13c27223691b61ade674ba14c29faada6ccb0d346a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/ca5d1630904f64bfa1a1a75bbedeb7c56637b22246566475f581caa4a60d5ca7-init: no space left on device