[INFO] cloning repository https://github.com/puzzzzzzle/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/puzzzzzzle/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzzzzzle%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzzzzzle%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6a74f60fee6efa785cc8ed3a206d238bebf02dc
[INFO] checking puzzzzzzle/rust_study against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzzzzzle%2Frust_study" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/puzzzzzzle/rust_study on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/puzzzzzzle/rust_study
[INFO] finished tweaking git repo https://github.com/puzzzzzzle/rust_study
[INFO] tweaked toml for git repo https://github.com/puzzzzzzle/rust_study written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/puzzzzzzle/rust_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b40808f0bb76ae21ae92e2cc1891fe95056b52d69c3a9fc8fb73000197a84a4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2b40808f0bb76ae21ae92e2cc1891fe95056b52d69c3a9fc8fb73000197a84a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b40808f0bb76ae21ae92e2cc1891fe95056b52d69c3a9fc8fb73000197a84a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b40808f0bb76ae21ae92e2cc1891fe95056b52d69c3a9fc8fb73000197a84a4", kill_on_drop: false }`
[INFO] [stdout] 2b40808f0bb76ae21ae92e2cc1891fe95056b52d69c3a9fc8fb73000197a84a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7d8dd3cd6d221712622a62d4bbf290a58f79c63a00f937914bc21dd029cc251
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a7d8dd3cd6d221712622a62d4bbf290a58f79c63a00f937914bc21dd029cc251", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling anyhow v1.0.49
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]     Checking futures-io v0.3.18
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling unicode-xid v0.1.0
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[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
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[INFO] [stderr]    Compiling rust_call_c_manul v0.1.0 (/opt/rustwide/workdir/rust_with_c/rust_with_c_manul)
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
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[INFO] [stderr]     Checking common_macros v0.1.0 (/opt/rustwide/workdir/proc_macros)
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.18
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking futures-executor v0.3.18
[INFO] [stderr]     Checking futures v0.3.18
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking serde_json v1.0.72
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking log4rs v1.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling function_name-proc-macro v0.2.0
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]     Checking common_concepts v0.1.0 (/opt/rustwide/workdir/rust_language)
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> rust_language/examples/pin_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> rust_language/examples/multi_file_exaplpe/ex2.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main() {}
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]   --> rust_language/examples/c06_std_collections_test.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     use std::collections::HashMap;
[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: `std::fs::remove_file`
[INFO] [stdout]  --> rust_language/examples/c07_error_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::remove_file;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::ErrorKind`
[INFO] [stdout]  --> rust_language/examples/c07_error_test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::ErrorKind;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `FILE_NAME`
[INFO] [stdout]  --> rust_language/examples/c07_error_test.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | static FILE_NAME: &str = "hello.txt";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file`
[INFO] [stdout]   --> rust_language/examples/c07_error_test.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn read_username_from_file(name: &str) -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_username_from_file_simple`
[INFO] [stdout]   --> rust_language/examples/c07_error_test.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn read_username_from_file_simple(name: &str) -> Result<String, io::Error> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> rust_language/examples/co_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `take_ownership`
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn take_ownership(s: String) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `takes_and_gives_back`
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn takes_and_gives_back(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `borrow`
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn borrow(s: &mut String) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `str_arr`
[INFO] [stdout]   --> rust_language/examples/c03_test_ownership.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn str_arr(arr: &[i32]) -> String {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello`
[INFO] [stdout]  --> rust_language/examples/co_test.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | async fn hello() -> String {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_1`
[INFO] [stdout]  --> rust_language/examples/co_test.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | async fn hello_1() -> String {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_1_2`
[INFO] [stdout]   --> rust_language/examples/co_test.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | async fn hello_1_2() -> String {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_latter`
[INFO] [stdout]   --> rust_language/examples/co_test.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | async fn hello_latter() -> String {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `factorial`
[INFO] [stdout]  --> rust_language/examples/macro_test.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn factorial(mut n: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking function_name v0.2.0
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `V4`
[INFO] [stdout]  --> rust_language/examples/c04_enum_test.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         V4,
[INFO] [stdout]   |         ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `V6`
[INFO] [stdout]  --> rust_language/examples/c04_enum_test.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         V6,
[INFO] [stdout]   |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         kind: IpAddrKind,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `address`
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         address: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `V4`
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         V4(String),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `V6`
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         V6(String),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UNKNOWN`
[INFO] [stdout]   --> rust_language/examples/c04_enum_test.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         UNKNOWN(UnknownIpAddr),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `build_user`
[INFO] [stdout]   --> rust_language/examples/c05_struct_test.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn build_user(username: String) -> User {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> rust_language/examples/c05_struct_test.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn area(&self) -> u32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `area`
[INFO] [stdout]   --> rust_language/examples/c05_struct_test.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn area(rectangle: &Rectangle) -> u32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `combine_vecs`
[INFO] [stdout]    --> rust_language/examples/c05_struct_test.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn combine_vecs<T: Clone>(v: Vec<T>, u: Vec<T>) -> impl Iterator<Item = T> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hello_mod v0.1.0 (/opt/rustwide/workdir/module_test/hello_mod)
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common`
[INFO] [stdout]  --> rust_language/examples/c01_func_test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use common;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::*`
[INFO] [stdout]  --> rust_language/examples/c01_func_test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Result`, `anyhow`
[INFO] [stdout]  --> rust_language/examples/c07-1_error_handle.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common`
[INFO] [stdout]  --> rust_language/examples/c07-1_error_handle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use common;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log::*`
[INFO] [stdout]  --> rust_language/examples/c07-1_error_handle.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::*;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_func`
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn hello_func() {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_int`
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn hello_int(name: i32) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hello_ret_int`
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn hello_ret_int(name: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_if`
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn test_if(cond: bool) -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `loop_test`
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn loop_test() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `outter_fn`
[INFO] [stdout]   --> rust_language/examples/c01_func_test.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn outter_fn() -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `Command { std: "docker" "inspect" "a7d8dd3cd6d221712622a62d4bbf290a58f79c63a00f937914bc21dd029cc251", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7d8dd3cd6d221712622a62d4bbf290a58f79c63a00f937914bc21dd029cc251", kill_on_drop: false }`
[INFO] [stdout] a7d8dd3cd6d221712622a62d4bbf290a58f79c63a00f937914bc21dd029cc251