Dec 12 19:28:41.838 INFO testing zjw1918/proj-rust-minigrep against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 12 19:28:41.838 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 19:28:42.435 INFO [stdout] 2e0c7e69dd734dc795d56bf6447c850007f724afa17db650e5f8048133d8dc73
Dec 12 19:28:42.437 INFO running `"docker" "start" "-a" "2e0c7e69dd734dc795d56bf6447c850007f724afa17db650e5f8048133d8dc73"`
Dec 12 19:28:44.390 INFO [stderr] usermod: no changes
Dec 12 19:28:44.720 INFO [stderr]    Compiling version_check v0.1.4
Dec 12 19:28:44.727 INFO [stderr]    Compiling byteorder v1.2.6
Dec 12 19:28:44.727 INFO [stderr]    Compiling cfg-if v0.1.5
Dec 12 19:28:44.727 INFO [stderr]    Compiling pkg-config v0.3.13
Dec 12 19:28:44.731 INFO [stderr]    Compiling cc v1.0.22
Dec 12 19:28:44.731 INFO [stderr]    Compiling lazycell v0.6.0
Dec 12 19:28:44.731 INFO [stderr]    Compiling futures v0.1.23
Dec 12 19:28:44.735 INFO [stderr]    Compiling rand_core v0.2.1
Dec 12 19:28:45.377 INFO [stderr]    Compiling openssl v0.9.24
Dec 12 19:28:45.889 INFO [stderr]    Compiling httparse v1.3.2
Dec 12 19:28:53.148 INFO [stderr]    Compiling bitflags v0.9.1
Dec 12 19:28:53.211 INFO [stderr]    Compiling proc-macro2 v0.4.13
Dec 12 19:28:53.239 INFO [stderr]    Compiling try-lock v0.1.0
Dec 12 19:28:53.375 INFO [stderr]    Compiling safemem v0.2.0
Dec 12 19:28:53.532 INFO [stderr]    Compiling serde v1.0.75
Dec 12 19:28:58.487 INFO [stderr]    Compiling lazy_static v0.2.11
Dec 12 19:28:58.531 INFO [stderr]    Compiling scoped-tls v0.1.2
Dec 12 19:28:58.631 INFO [stderr]    Compiling itoa v0.4.2
Dec 12 19:28:58.855 INFO [stderr]    Compiling net2 v0.2.33
Dec 12 19:28:59.163 INFO [stderr]    Compiling log v0.4.4
Dec 12 19:28:59.463 INFO [stderr]    Compiling encoding_rs v0.8.6
Dec 12 19:28:59.691 INFO [stderr]    Compiling rand v0.5.5
Dec 12 19:28:59.842 INFO [stderr]    Compiling lazy_static v1.1.0
Dec 12 19:29:00.131 INFO [stderr]    Compiling unicase v1.4.2
Dec 12 19:29:01.027 INFO [stderr]    Compiling unicase v2.1.0
Dec 12 19:29:03.024 INFO [stderr]    Compiling base64 v0.9.2
Dec 12 19:29:03.547 INFO [stderr]    Compiling uuid v0.6.5
Dec 12 19:29:03.563 INFO [stderr]    Compiling bytes v0.4.9
Dec 12 19:29:03.591 INFO [stderr]    Compiling lock_api v0.1.3
Dec 12 19:29:03.697 INFO [stderr]    Compiling openssl-sys v0.9.35
Dec 12 19:29:09.539 INFO [stderr]    Compiling parking_lot_core v0.2.14
Dec 12 19:29:09.587 INFO [stderr]    Compiling mio v0.6.15
Dec 12 19:29:10.511 INFO [stderr]    Compiling url v1.7.1
Dec 12 19:29:18.907 INFO [stderr]    Compiling tokio-executor v0.1.4
Dec 12 19:29:18.955 INFO [stderr]    Compiling want v0.0.4
Dec 12 19:29:19.037 INFO [stderr]    Compiling relay v0.1.1
Dec 12 19:29:20.461 INFO [stderr]    Compiling tokio-service v0.1.0
Dec 12 19:29:25.715 INFO [stderr]    Compiling futures-cpupool v0.1.8
Dec 12 19:29:25.819 INFO [stderr]    Compiling tokio-io v0.1.8
Dec 12 19:29:25.825 INFO [stderr]    Compiling parking_lot v0.6.3
Dec 12 19:29:25.972 INFO [stderr]    Compiling libflate v0.1.16
Dec 12 19:29:26.050 INFO [stderr]    Compiling quote v0.6.8
Dec 12 19:29:26.196 INFO [stderr]    Compiling phf_shared v0.7.23
Dec 12 19:29:27.259 INFO [stderr]    Compiling tokio-current-thread v0.1.1
Dec 12 19:29:30.983 INFO [stderr]    Compiling tokio-timer v0.2.6
Dec 12 19:29:31.667 INFO [stderr]    Compiling mio-uds v0.6.6
Dec 12 19:29:31.703 INFO [stderr]    Compiling crossbeam-epoch v0.5.2
Dec 12 19:29:31.703 INFO [stderr]    Compiling phf_generator v0.7.23
Dec 12 19:29:32.019 INFO [stderr]    Compiling phf v0.7.23
Dec 12 19:29:32.619 INFO [stderr]    Compiling syn v0.14.9
Dec 12 19:29:33.159 INFO [stderr]    Compiling tokio-reactor v0.1.4
Dec 12 19:29:38.199 INFO [stderr]    Compiling tokio-codec v0.1.0
Dec 12 19:29:38.199 INFO [stderr]    Compiling mime v0.3.9
Dec 12 19:29:38.240 INFO [stderr]    Compiling phf_codegen v0.7.23
Dec 12 19:29:38.257 INFO [stderr]    Compiling crossbeam-deque v0.6.1
Dec 12 19:29:38.519 INFO [stderr]    Compiling tokio-tcp v0.1.1
Dec 12 19:29:38.974 INFO [stderr]    Compiling tokio-uds v0.2.1
Dec 12 19:29:39.239 INFO [stderr]    Compiling tokio-threadpool v0.1.6
Dec 12 19:29:40.435 INFO [stderr]    Compiling mime_guess v2.0.0-alpha.6
Dec 12 19:29:42.735 INFO [stderr]    Compiling tokio-udp v0.1.2
Dec 12 19:29:48.255 INFO [stderr]    Compiling tokio-fs v0.1.3
Dec 12 19:29:55.696 INFO [stderr]    Compiling tokio v0.1.8
Dec 12 19:29:59.240 INFO [stderr]    Compiling serde_derive v1.0.75
Dec 12 19:29:59.869 INFO [stderr]    Compiling native-tls v0.1.5
Dec 12 19:30:02.197 INFO [stderr]    Compiling tokio-core v0.1.17
Dec 12 19:30:04.571 INFO [stderr]    Compiling serde_json v1.0.26
Dec 12 19:30:04.572 INFO [stderr]    Compiling serde_urlencoded v0.5.3
Dec 12 19:30:07.781 INFO [stderr]    Compiling tokio-tls v0.1.4
Dec 12 19:30:07.782 INFO [stderr]    Compiling hyper v0.11.27
Dec 12 19:30:24.423 INFO [stderr]    Compiling hyper-tls v0.1.4
Dec 12 19:30:25.166 INFO [stderr]    Compiling reqwest v0.8.8
Dec 12 19:30:31.980 INFO [stderr]    Compiling minigrep v0.1.0 (/source)
Dec 12 19:30:32.155 INFO [stderr] warning: doc comment not used by rustdoc
Dec 12 19:30:32.155 INFO [stderr]    --> src/lib.rs:167:9
Dec 12 19:30:32.155 INFO [stderr]     |
Dec 12 19:30:32.155 INFO [stderr] 167 |         /// 重要! for 给出work的引用（可变引用）
Dec 12 19:30:32.155 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:32.155 INFO [stderr]     |
Dec 12 19:30:32.155 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 12 19:30:32.155 INFO [stderr] 
Dec 12 19:30:33.739 INFO [stderr] warning: unused imports: `Cons`, `Nil`
Dec 12 19:30:33.739 INFO [stderr]  --> src/zjw_learn/smart_pointer.rs:1:19
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr] 1 | use self::List::{ Cons, Nil };
Dec 12 19:30:33.739 INFO [stderr]   |                   ^^^^  ^^^
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 19:30:33.739 INFO [stderr] 
Dec 12 19:30:33.739 INFO [stderr] warning: unused imports: `ConsRc`, `NilRc`
Dec 12 19:30:33.739 INFO [stderr]  --> src/zjw_learn/smart_pointer.rs:2:21
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr] 2 | use self::ListRc::{ ConsRc, NilRc };
Dec 12 19:30:33.739 INFO [stderr]   |                     ^^^^^^  ^^^^^
Dec 12 19:30:33.739 INFO [stderr] 
Dec 12 19:30:33.739 INFO [stderr] warning: unused import: `mpsc`
Dec 12 19:30:33.739 INFO [stderr]  --> src/zjw_learn/concurrent.rs:2:17
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr] 2 | use std::sync::{mpsc, Mutex, Arc};
Dec 12 19:30:33.739 INFO [stderr]   |                 ^^^^
Dec 12 19:30:33.739 INFO [stderr] 
Dec 12 19:30:33.739 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 12 19:30:33.739 INFO [stderr]  --> src/zjw_learn/concurrent.rs:3:5
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr] 3 | use std::time::Duration;
Dec 12 19:30:33.739 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:33.739 INFO [stderr] 
Dec 12 19:30:33.739 INFO [stderr] warning: unused import: `std::error::Error`
Dec 12 19:30:33.739 INFO [stderr]  --> src/http_test.rs:3:5
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr] 3 | use std::error::Error;
Dec 12 19:30:33.739 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 12 19:30:33.739 INFO [stderr] 
Dec 12 19:30:33.739 INFO [stderr] warning: unused import: `std::io::Read`
Dec 12 19:30:33.739 INFO [stderr]  --> src/http_test.rs:4:5
Dec 12 19:30:33.739 INFO [stderr]   |
Dec 12 19:30:33.739 INFO [stderr] 4 | use std::io::Read;
Dec 12 19:30:33.739 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 12 19:30:33.739 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:34.116 INFO [stderr]  --> src/zjw_learn/closure.rs:5:1
Dec 12 19:30:34.116 INFO [stderr]   |
Dec 12 19:30:34.116 INFO [stderr] 5 | pub fn run() {
Dec 12 19:30:34.116 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr]   |
Dec 12 19:30:34.116 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: function is never used: `simulated_expensive_calculation`
Dec 12 19:30:34.116 INFO [stderr]   --> src/zjw_learn/closure.rs:29:1
Dec 12 19:30:34.116 INFO [stderr]    |
Dec 12 19:30:34.116 INFO [stderr] 29 | pub fn simulated_expensive_calculation(intensity: u32) -> u32 {
Dec 12 19:30:34.116 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: function is never used: `generate_workout`
Dec 12 19:30:34.116 INFO [stderr]   --> src/zjw_learn/closure.rs:35:1
Dec 12 19:30:34.116 INFO [stderr]    |
Dec 12 19:30:34.116 INFO [stderr] 35 | pub fn generate_workout(intensity: u32, random_number: u32) {
Dec 12 19:30:34.116 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: struct is never constructed: `Cacher`
Dec 12 19:30:34.116 INFO [stderr]   --> src/zjw_learn/closure.rs:75:1
Dec 12 19:30:34.116 INFO [stderr]    |
Dec 12 19:30:34.116 INFO [stderr] 75 | struct Cacher<T> where T: Fn(u32) -> u32 {
Dec 12 19:30:34.116 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: method is never used: `new`
Dec 12 19:30:34.116 INFO [stderr]   --> src/zjw_learn/closure.rs:81:5
Dec 12 19:30:34.116 INFO [stderr]    |
Dec 12 19:30:34.116 INFO [stderr] 81 |     fn new(calculation: T) -> Cacher<T> {
Dec 12 19:30:34.116 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: method is never used: `value`
Dec 12 19:30:34.116 INFO [stderr]   --> src/zjw_learn/closure.rs:85:5
Dec 12 19:30:34.116 INFO [stderr]    |
Dec 12 19:30:34.116 INFO [stderr] 85 |     fn value(&mut self, arg: u32) -> u32 {
Dec 12 19:30:34.116 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: struct is never constructed: `Counter`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/closure.rs:150:1
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 150 | struct Counter {
Dec 12 19:30:34.116 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: method is never used: `new`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/closure.rs:155:5
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 155 |     fn new() -> Counter {
Dec 12 19:30:34.116 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:34.116 INFO [stderr]  --> src/zjw_learn/smart_pointer.rs:9:1
Dec 12 19:30:34.116 INFO [stderr]   |
Dec 12 19:30:34.116 INFO [stderr] 9 | pub fn run() {
Dec 12 19:30:34.116 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: enum is never used: `List`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:102:1
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 102 | enum List {
Dec 12 19:30:34.116 INFO [stderr]     | ^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: enum is never used: `ListRc`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:109:1
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 109 | enum ListRc {
Dec 12 19:30:34.116 INFO [stderr]     | ^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: enum is never used: `ListRf`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:116:1
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 116 | enum ListRf {
Dec 12 19:30:34.116 INFO [stderr]     | ^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: struct is never constructed: `MyBox`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:122:1
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 122 | struct MyBox<T>(T);
Dec 12 19:30:34.116 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: method is never used: `new`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:125:5
Dec 12 19:30:34.116 INFO [stderr]     |
Dec 12 19:30:34.116 INFO [stderr] 125 |     fn new(x: T) -> MyBox<T> {
Dec 12 19:30:34.116 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.116 INFO [stderr] 
Dec 12 19:30:34.116 INFO [stderr] warning: struct is never constructed: `CustomSmartPointer`
Dec 12 19:30:34.116 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:139:1
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 139 | struct CustomSmartPointer {
Dec 12 19:30:34.117 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: struct is never constructed: `LimitTracker`
Dec 12 19:30:34.117 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:154:1
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 154 | pub struct LimitTracker<'a, T: 'a + Messenger> {
Dec 12 19:30:34.117 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: method is never used: `new`
Dec 12 19:30:34.117 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:161:5
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 161 |     pub fn new(messenger: &T, max: usize) -> LimitTracker<T> {
Dec 12 19:30:34.117 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: method is never used: `set_value`
Dec 12 19:30:34.117 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:167:5
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 167 |     pub fn set_value(&mut self, value: usize) {
Dec 12 19:30:34.117 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: enum is never used: `List1`
Dec 12 19:30:34.117 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:217:1
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 217 | enum List1 {
Dec 12 19:30:34.117 INFO [stderr]     | ^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: method is never used: `tail`
Dec 12 19:30:34.117 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:223:5
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 223 |     fn tail(&self) -> Option<&RefCell<Rc<List1>>> {
Dec 12 19:30:34.117 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: struct is never constructed: `Node`
Dec 12 19:30:34.117 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:233:1
Dec 12 19:30:34.117 INFO [stderr]     |
Dec 12 19:30:34.117 INFO [stderr] 233 | struct Node {
Dec 12 19:30:34.117 INFO [stderr]     | ^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:34.117 INFO [stderr]  --> src/zjw_learn/concurrent.rs:5:1
Dec 12 19:30:34.117 INFO [stderr]   |
Dec 12 19:30:34.117 INFO [stderr] 5 | pub fn run() {
Dec 12 19:30:34.117 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: foreign function is never used: `abs`
Dec 12 19:30:34.117 INFO [stderr]  --> src/zjw_learn/my_unsafe.rs:2:3
Dec 12 19:30:34.117 INFO [stderr]   |
Dec 12 19:30:34.117 INFO [stderr] 2 |   fn abs(input: i32) -> i32;
Dec 12 19:30:34.117 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:14:1
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 14 | pub fn run() {
Dec 12 19:30:34.117 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: function is never used: `danger`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:41:1
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 41 | unsafe fn danger() {
Dec 12 19:30:34.117 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: function is never used: `split_at_mut`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:53:1
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 53 | fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
Dec 12 19:30:34.117 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: struct is never constructed: `Context`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:64:1
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 64 | struct Context<'s>(&'s str);
Dec 12 19:30:34.117 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:65:1
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 65 | struct Parser<'a, 's: 'a> {
Dec 12 19:30:34.117 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: method is never used: `parse`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:69:3
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 69 |   fn parse(&self) -> Result<(), &'s str> {
Dec 12 19:30:34.117 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.117 INFO [stderr] 
Dec 12 19:30:34.117 INFO [stderr] warning: function is never used: `test_parse`
Dec 12 19:30:34.117 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:74:1
Dec 12 19:30:34.117 INFO [stderr]    |
Dec 12 19:30:34.117 INFO [stderr] 74 | fn test_parse(context: Context) -> Result<(), &str> {
Dec 12 19:30:34.117 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:34.118 INFO [stderr]   --> src/zjw_learn/server.rs:12:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 12 | pub fn run() {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `handle_connection`
Dec 12 19:30:34.118 INFO [stderr]   --> src/zjw_learn/server.rs:26:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 26 | fn handle_connection(mut stream: TcpStream) {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `run_learn_closure`
Dec 12 19:30:34.118 INFO [stderr]  --> src/zjw_learn/mod.rs:7:1
Dec 12 19:30:34.118 INFO [stderr]   |
Dec 12 19:30:34.118 INFO [stderr] 7 | pub fn run_learn_closure() {
Dec 12 19:30:34.118 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `run_learn_smart_pointer`
Dec 12 19:30:34.118 INFO [stderr]   --> src/zjw_learn/mod.rs:11:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 11 | pub fn run_learn_smart_pointer() {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `run_learn_concurrent`
Dec 12 19:30:34.118 INFO [stderr]   --> src/zjw_learn/mod.rs:15:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 15 | pub fn run_learn_concurrent() {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `run_learn_unsafe`
Dec 12 19:30:34.118 INFO [stderr]   --> src/zjw_learn/mod.rs:19:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 19 | pub fn run_learn_unsafe() {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `run_learn_server`
Dec 12 19:30:34.118 INFO [stderr]   --> src/zjw_learn/mod.rs:23:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 23 | pub fn run_learn_server() {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.118 INFO [stderr] warning: function is never used: `learn_minigrep`
Dec 12 19:30:34.118 INFO [stderr]   --> src/main.rs:25:1
Dec 12 19:30:34.118 INFO [stderr]    |
Dec 12 19:30:34.118 INFO [stderr] 25 | fn learn_minigrep() {
Dec 12 19:30:34.118 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:34.118 INFO [stderr] 
Dec 12 19:30:34.123 INFO [stderr] warning: path statement with no effect
Dec 12 19:30:34.123 INFO [stderr]   --> src/zjw_learn/smart_pointer.rs:89:9
Dec 12 19:30:34.123 INFO [stderr]    |
Dec 12 19:30:34.123 INFO [stderr] 89 |         branch; // 强制使branch过期
Dec 12 19:30:34.123 INFO [stderr]    |         ^^^^^^^
Dec 12 19:30:34.123 INFO [stderr]    |
Dec 12 19:30:34.123 INFO [stderr]    = note: #[warn(path_statements)] on by default
Dec 12 19:30:34.123 INFO [stderr] 
Dec 12 19:30:34.123 INFO [stderr] warning: structure field `objectId` should have a snake case name such as `object_id`
Dec 12 19:30:34.123 INFO [stderr]   --> src/http_test.rs:12:5
Dec 12 19:30:34.123 INFO [stderr]    |
Dec 12 19:30:34.123 INFO [stderr] 12 |     objectId: String,
Dec 12 19:30:34.123 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 12 19:30:34.123 INFO [stderr]    |
Dec 12 19:30:34.123 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 12 19:30:34.123 INFO [stderr] 
Dec 12 19:30:34.123 INFO [stderr] warning: structure field `ringData` should have a snake case name such as `ring_data`
Dec 12 19:30:34.123 INFO [stderr]   --> src/http_test.rs:13:5
Dec 12 19:30:34.123 INFO [stderr]    |
Dec 12 19:30:34.123 INFO [stderr] 13 |     ringData: String,
Dec 12 19:30:34.123 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 12 19:30:34.123 INFO [stderr] 
Dec 12 19:30:37.982 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
Dec 12 19:30:37.998 INFO [stderr] su: No module specific data is present
Dec 12 19:30:39.532 INFO running `"docker" "inspect" "2e0c7e69dd734dc795d56bf6447c850007f724afa17db650e5f8048133d8dc73"`
Dec 12 19:30:39.887 INFO running `"docker" "rm" "-f" "2e0c7e69dd734dc795d56bf6447c850007f724afa17db650e5f8048133d8dc73"`
Dec 12 19:30:40.267 INFO [stdout] 2e0c7e69dd734dc795d56bf6447c850007f724afa17db650e5f8048133d8dc73
Dec 12 19:30:40.273 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 19:30:40.719 INFO [stdout] 8dbdec4bba6cd2bc887a4501def167a5b6653a5328f3635aa8552926a8c4b13d
Dec 12 19:30:40.722 INFO running `"docker" "start" "-a" "8dbdec4bba6cd2bc887a4501def167a5b6653a5328f3635aa8552926a8c4b13d"`
Dec 12 19:30:42.947 INFO [stderr] usermod: no changes
Dec 12 19:30:43.187 INFO [stderr]    Compiling minigrep v0.1.0 (/source)
Dec 12 19:30:43.427 INFO [stderr] warning: doc comment not used by rustdoc
Dec 12 19:30:43.427 INFO [stderr]    --> src/lib.rs:167:9
Dec 12 19:30:43.428 INFO [stderr]     |
Dec 12 19:30:43.428 INFO [stderr] 167 |         /// 重要! for 给出work的引用（可变引用）
Dec 12 19:30:43.428 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:43.428 INFO [stderr]     |
Dec 12 19:30:43.429 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 12 19:30:43.429 INFO [stderr] 
Dec 12 19:30:43.771 INFO [stderr] warning: unused imports: `Cons`, `Nil`
Dec 12 19:30:43.771 INFO [stderr]  --> src/zjw_learn/smart_pointer.rs:1:19
Dec 12 19:30:43.771 INFO [stderr]   |
Dec 12 19:30:43.771 INFO [stderr] 1 | use self::List::{ Cons, Nil };
Dec 12 19:30:43.771 INFO [stderr]   |                   ^^^^  ^^^
Dec 12 19:30:43.771 INFO [stderr]   |
Dec 12 19:30:43.771 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 19:30:43.771 INFO [stderr] 
Dec 12 19:30:43.771 INFO [stderr] warning: unused imports: `ConsRc`, `NilRc`
Dec 12 19:30:43.771 INFO [stderr]  --> src/zjw_learn/smart_pointer.rs:2:21
Dec 12 19:30:43.771 INFO [stderr]   |
Dec 12 19:30:43.771 INFO [stderr] 2 | use self::ListRc::{ ConsRc, NilRc };
Dec 12 19:30:43.771 INFO [stderr]   |                     ^^^^^^  ^^^^^
Dec 12 19:30:43.771 INFO [stderr] 
Dec 12 19:30:43.772 INFO [stderr] warning: unused import: `mpsc`
Dec 12 19:30:43.772 INFO [stderr]  --> src/zjw_learn/concurrent.rs:2:17
Dec 12 19:30:43.772 INFO [stderr]   |
Dec 12 19:30:43.772 INFO [stderr] 2 | use std::sync::{mpsc, Mutex, Arc};
Dec 12 19:30:43.772 INFO [stderr]   |                 ^^^^
Dec 12 19:30:43.772 INFO [stderr] 
Dec 12 19:30:43.772 INFO [stderr] warning: unused import: `std::time::Duration`
Dec 12 19:30:43.772 INFO [stderr]  --> src/zjw_learn/concurrent.rs:3:5
Dec 12 19:30:43.772 INFO [stderr]   |
Dec 12 19:30:43.772 INFO [stderr] 3 | use std::time::Duration;
Dec 12 19:30:43.772 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:43.772 INFO [stderr] 
Dec 12 19:30:43.772 INFO [stderr] warning: unused import: `std::error::Error`
Dec 12 19:30:43.772 INFO [stderr]  --> src/http_test.rs:3:5
Dec 12 19:30:43.772 INFO [stderr]   |
Dec 12 19:30:43.772 INFO [stderr] 3 | use std::error::Error;
Dec 12 19:30:43.773 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 12 19:30:43.773 INFO [stderr] 
Dec 12 19:30:43.773 INFO [stderr] warning: unused import: `std::io::Read`
Dec 12 19:30:43.773 INFO [stderr]  --> src/http_test.rs:4:5
Dec 12 19:30:43.773 INFO [stderr]   |
Dec 12 19:30:43.773 INFO [stderr] 4 | use std::io::Read;
Dec 12 19:30:43.773 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 12 19:30:43.773 INFO [stderr] 
Dec 12 19:30:44.504 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:44.504 INFO [stderr]  --> src/zjw_learn/closure.rs:5:1
Dec 12 19:30:44.504 INFO [stderr]   |
Dec 12 19:30:44.505 INFO [stderr] 5 | pub fn run() {
Dec 12 19:30:44.505 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 19:30:44.505 INFO [stderr]   |
Dec 12 19:30:44.505 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 12 19:30:44.505 INFO [stderr] 
Dec 12 19:30:44.505 INFO [stderr] warning: function is never used: `simulated_expensive_calculation`
Dec 12 19:30:44.505 INFO [stderr]   --> src/zjw_learn/closure.rs:29:1
Dec 12 19:30:44.505 INFO [stderr]    |
Dec 12 19:30:44.505 INFO [stderr] 29 | pub fn simulated_expensive_calculation(intensity: u32) -> u32 {
Dec 12 19:30:44.505 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.505 INFO [stderr] 
Dec 12 19:30:44.505 INFO [stderr] warning: function is never used: `generate_workout`
Dec 12 19:30:44.505 INFO [stderr]   --> src/zjw_learn/closure.rs:35:1
Dec 12 19:30:44.505 INFO [stderr]    |
Dec 12 19:30:44.505 INFO [stderr] 35 | pub fn generate_workout(intensity: u32, random_number: u32) {
Dec 12 19:30:44.505 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.505 INFO [stderr] 
Dec 12 19:30:44.505 INFO [stderr] warning: struct is never constructed: `Counter`
Dec 12 19:30:44.505 INFO [stderr]    --> src/zjw_learn/closure.rs:150:1
Dec 12 19:30:44.505 INFO [stderr]     |
Dec 12 19:30:44.505 INFO [stderr] 150 | struct Counter {
Dec 12 19:30:44.505 INFO [stderr]     | ^^^^^^^^^^^^^^
Dec 12 19:30:44.505 INFO [stderr] 
Dec 12 19:30:44.506 INFO [stderr] warning: method is never used: `new`
Dec 12 19:30:44.506 INFO [stderr]    --> src/zjw_learn/closure.rs:155:5
Dec 12 19:30:44.506 INFO [stderr]     |
Dec 12 19:30:44.506 INFO [stderr] 155 |     fn new() -> Counter {
Dec 12 19:30:44.506 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.506 INFO [stderr] 
Dec 12 19:30:44.506 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:44.506 INFO [stderr]  --> src/zjw_learn/smart_pointer.rs:9:1
Dec 12 19:30:44.506 INFO [stderr]   |
Dec 12 19:30:44.507 INFO [stderr] 9 | pub fn run() {
Dec 12 19:30:44.507 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 19:30:44.507 INFO [stderr] 
Dec 12 19:30:44.507 INFO [stderr] warning: enum is never used: `List`
Dec 12 19:30:44.507 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:102:1
Dec 12 19:30:44.507 INFO [stderr]     |
Dec 12 19:30:44.508 INFO [stderr] 102 | enum List {
Dec 12 19:30:44.508 INFO [stderr]     | ^^^^^^^^^
Dec 12 19:30:44.508 INFO [stderr] 
Dec 12 19:30:44.508 INFO [stderr] warning: enum is never used: `ListRc`
Dec 12 19:30:44.508 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:109:1
Dec 12 19:30:44.508 INFO [stderr]     |
Dec 12 19:30:44.508 INFO [stderr] 109 | enum ListRc {
Dec 12 19:30:44.509 INFO [stderr]     | ^^^^^^^^^^^
Dec 12 19:30:44.509 INFO [stderr] 
Dec 12 19:30:44.509 INFO [stderr] warning: enum is never used: `ListRf`
Dec 12 19:30:44.509 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:116:1
Dec 12 19:30:44.509 INFO [stderr]     |
Dec 12 19:30:44.509 INFO [stderr] 116 | enum ListRf {
Dec 12 19:30:44.509 INFO [stderr]     | ^^^^^^^^^^^
Dec 12 19:30:44.510 INFO [stderr] 
Dec 12 19:30:44.510 INFO [stderr] warning: struct is never constructed: `MyBox`
Dec 12 19:30:44.510 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:122:1
Dec 12 19:30:44.510 INFO [stderr]     |
Dec 12 19:30:44.510 INFO [stderr] 122 | struct MyBox<T>(T);
Dec 12 19:30:44.510 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.511 INFO [stderr] 
Dec 12 19:30:44.511 INFO [stderr] warning: method is never used: `new`
Dec 12 19:30:44.511 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:125:5
Dec 12 19:30:44.511 INFO [stderr]     |
Dec 12 19:30:44.511 INFO [stderr] 125 |     fn new(x: T) -> MyBox<T> {
Dec 12 19:30:44.511 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.511 INFO [stderr] 
Dec 12 19:30:44.512 INFO [stderr] warning: struct is never constructed: `CustomSmartPointer`
Dec 12 19:30:44.512 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:139:1
Dec 12 19:30:44.512 INFO [stderr]     |
Dec 12 19:30:44.512 INFO [stderr] 139 | struct CustomSmartPointer {
Dec 12 19:30:44.512 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.512 INFO [stderr] 
Dec 12 19:30:44.513 INFO [stderr] warning: enum is never used: `List1`
Dec 12 19:30:44.513 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:217:1
Dec 12 19:30:44.513 INFO [stderr]     |
Dec 12 19:30:44.513 INFO [stderr] 217 | enum List1 {
Dec 12 19:30:44.513 INFO [stderr]     | ^^^^^^^^^^
Dec 12 19:30:44.513 INFO [stderr] 
Dec 12 19:30:44.514 INFO [stderr] warning: method is never used: `tail`
Dec 12 19:30:44.514 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:223:5
Dec 12 19:30:44.514 INFO [stderr]     |
Dec 12 19:30:44.514 INFO [stderr] 223 |     fn tail(&self) -> Option<&RefCell<Rc<List1>>> {
Dec 12 19:30:44.514 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.514 INFO [stderr] 
Dec 12 19:30:44.515 INFO [stderr] warning: struct is never constructed: `Node`
Dec 12 19:30:44.515 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:233:1
Dec 12 19:30:44.515 INFO [stderr]     |
Dec 12 19:30:44.515 INFO [stderr] 233 | struct Node {
Dec 12 19:30:44.515 INFO [stderr]     | ^^^^^^^^^^^
Dec 12 19:30:44.515 INFO [stderr] 
Dec 12 19:30:44.516 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:44.516 INFO [stderr]  --> src/zjw_learn/concurrent.rs:5:1
Dec 12 19:30:44.516 INFO [stderr]   |
Dec 12 19:30:44.516 INFO [stderr] 5 | pub fn run() {
Dec 12 19:30:44.516 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 19:30:44.516 INFO [stderr] 
Dec 12 19:30:44.516 INFO [stderr] warning: foreign function is never used: `abs`
Dec 12 19:30:44.517 INFO [stderr]  --> src/zjw_learn/my_unsafe.rs:2:3
Dec 12 19:30:44.517 INFO [stderr]   |
Dec 12 19:30:44.517 INFO [stderr] 2 |   fn abs(input: i32) -> i32;
Dec 12 19:30:44.517 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.517 INFO [stderr] 
Dec 12 19:30:44.517 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:44.518 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:14:1
Dec 12 19:30:44.518 INFO [stderr]    |
Dec 12 19:30:44.518 INFO [stderr] 14 | pub fn run() {
Dec 12 19:30:44.518 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 19:30:44.518 INFO [stderr] 
Dec 12 19:30:44.518 INFO [stderr] warning: function is never used: `danger`
Dec 12 19:30:44.518 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:41:1
Dec 12 19:30:44.519 INFO [stderr]    |
Dec 12 19:30:44.519 INFO [stderr] 41 | unsafe fn danger() {
Dec 12 19:30:44.519 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.519 INFO [stderr] 
Dec 12 19:30:44.519 INFO [stderr] warning: function is never used: `split_at_mut`
Dec 12 19:30:44.519 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:53:1
Dec 12 19:30:44.520 INFO [stderr]    |
Dec 12 19:30:44.520 INFO [stderr] 53 | fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
Dec 12 19:30:44.520 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.520 INFO [stderr] 
Dec 12 19:30:44.520 INFO [stderr] warning: struct is never constructed: `Context`
Dec 12 19:30:44.520 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:64:1
Dec 12 19:30:44.520 INFO [stderr]    |
Dec 12 19:30:44.521 INFO [stderr] 64 | struct Context<'s>(&'s str);
Dec 12 19:30:44.521 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.521 INFO [stderr] 
Dec 12 19:30:44.521 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 12 19:30:44.521 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:65:1
Dec 12 19:30:44.521 INFO [stderr]    |
Dec 12 19:30:44.522 INFO [stderr] 65 | struct Parser<'a, 's: 'a> {
Dec 12 19:30:44.522 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.522 INFO [stderr] 
Dec 12 19:30:44.522 INFO [stderr] warning: method is never used: `parse`
Dec 12 19:30:44.522 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:69:3
Dec 12 19:30:44.522 INFO [stderr]    |
Dec 12 19:30:44.522 INFO [stderr] 69 |   fn parse(&self) -> Result<(), &'s str> {
Dec 12 19:30:44.523 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.523 INFO [stderr] 
Dec 12 19:30:44.523 INFO [stderr] warning: function is never used: `test_parse`
Dec 12 19:30:44.523 INFO [stderr]   --> src/zjw_learn/my_unsafe.rs:74:1
Dec 12 19:30:44.523 INFO [stderr]    |
Dec 12 19:30:44.523 INFO [stderr] 74 | fn test_parse(context: Context) -> Result<(), &str> {
Dec 12 19:30:44.524 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.524 INFO [stderr] 
Dec 12 19:30:44.524 INFO [stderr] warning: function is never used: `run`
Dec 12 19:30:44.524 INFO [stderr]   --> src/zjw_learn/server.rs:12:1
Dec 12 19:30:44.524 INFO [stderr]    |
Dec 12 19:30:44.524 INFO [stderr] 12 | pub fn run() {
Dec 12 19:30:44.524 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 19:30:44.525 INFO [stderr] 
Dec 12 19:30:44.525 INFO [stderr] warning: function is never used: `handle_connection`
Dec 12 19:30:44.525 INFO [stderr]   --> src/zjw_learn/server.rs:26:1
Dec 12 19:30:44.525 INFO [stderr]    |
Dec 12 19:30:44.525 INFO [stderr] 26 | fn handle_connection(mut stream: TcpStream) {
Dec 12 19:30:44.525 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.525 INFO [stderr] 
Dec 12 19:30:44.526 INFO [stderr] warning: function is never used: `run_learn_closure`
Dec 12 19:30:44.526 INFO [stderr]  --> src/zjw_learn/mod.rs:7:1
Dec 12 19:30:44.526 INFO [stderr]   |
Dec 12 19:30:44.526 INFO [stderr] 7 | pub fn run_learn_closure() {
Dec 12 19:30:44.526 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.526 INFO [stderr] 
Dec 12 19:30:44.527 INFO [stderr] warning: function is never used: `run_learn_smart_pointer`
Dec 12 19:30:44.527 INFO [stderr]   --> src/zjw_learn/mod.rs:11:1
Dec 12 19:30:44.527 INFO [stderr]    |
Dec 12 19:30:44.527 INFO [stderr] 11 | pub fn run_learn_smart_pointer() {
Dec 12 19:30:44.527 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.527 INFO [stderr] 
Dec 12 19:30:44.528 INFO [stderr] warning: function is never used: `run_learn_concurrent`
Dec 12 19:30:44.528 INFO [stderr]   --> src/zjw_learn/mod.rs:15:1
Dec 12 19:30:44.528 INFO [stderr]    |
Dec 12 19:30:44.528 INFO [stderr] 15 | pub fn run_learn_concurrent() {
Dec 12 19:30:44.528 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.528 INFO [stderr] 
Dec 12 19:30:44.528 INFO [stderr] warning: function is never used: `run_learn_unsafe`
Dec 12 19:30:44.529 INFO [stderr]   --> src/zjw_learn/mod.rs:19:1
Dec 12 19:30:44.529 INFO [stderr]    |
Dec 12 19:30:44.529 INFO [stderr] 19 | pub fn run_learn_unsafe() {
Dec 12 19:30:44.529 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.529 INFO [stderr] 
Dec 12 19:30:44.529 INFO [stderr] warning: function is never used: `run_learn_server`
Dec 12 19:30:44.530 INFO [stderr]   --> src/zjw_learn/mod.rs:23:1
Dec 12 19:30:44.530 INFO [stderr]    |
Dec 12 19:30:44.530 INFO [stderr] 23 | pub fn run_learn_server() {
Dec 12 19:30:44.530 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.530 INFO [stderr] 
Dec 12 19:30:44.530 INFO [stderr] warning: function is never used: `learn_minigrep`
Dec 12 19:30:44.530 INFO [stderr]   --> src/main.rs:25:1
Dec 12 19:30:44.531 INFO [stderr]    |
Dec 12 19:30:44.531 INFO [stderr] 25 | fn learn_minigrep() {
Dec 12 19:30:44.531 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Dec 12 19:30:44.531 INFO [stderr] 
Dec 12 19:30:44.535 INFO [stderr] warning: path statement with no effect
Dec 12 19:30:44.535 INFO [stderr]   --> src/zjw_learn/smart_pointer.rs:89:9
Dec 12 19:30:44.535 INFO [stderr]    |
Dec 12 19:30:44.535 INFO [stderr] 89 |         branch; // 强制使branch过期
Dec 12 19:30:44.535 INFO [stderr]    |         ^^^^^^^
Dec 12 19:30:44.535 INFO [stderr]    |
Dec 12 19:30:44.536 INFO [stderr]    = note: #[warn(path_statements)] on by default
Dec 12 19:30:44.536 INFO [stderr] 
Dec 12 19:30:44.537 INFO [stderr] warning: variable `limitTracker` should have a snake case name such as `limit_tracker`
Dec 12 19:30:44.537 INFO [stderr]    --> src/zjw_learn/smart_pointer.rs:208:13
Dec 12 19:30:44.538 INFO [stderr]     |
Dec 12 19:30:44.538 INFO [stderr] 208 |         let mut limitTracker = LimitTracker::new(&mock_messenger, 100);
Dec 12 19:30:44.538 INFO [stderr]     |             ^^^^^^^^^^^^^^^^
Dec 12 19:30:44.538 INFO [stderr]     |
Dec 12 19:30:44.538 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 12 19:30:44.538 INFO [stderr] 
Dec 12 19:30:44.540 INFO [stderr] warning: structure field `objectId` should have a snake case name such as `object_id`
Dec 12 19:30:44.540 INFO [stderr]   --> src/http_test.rs:12:5
Dec 12 19:30:44.541 INFO [stderr]    |
Dec 12 19:30:44.541 INFO [stderr] 12 |     objectId: String,
Dec 12 19:30:44.541 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 12 19:30:44.541 INFO [stderr] 
Dec 12 19:30:44.541 INFO [stderr] warning: structure field `ringData` should have a snake case name such as `ring_data`
Dec 12 19:30:44.541 INFO [stderr]   --> src/http_test.rs:13:5
Dec 12 19:30:44.542 INFO [stderr]    |
Dec 12 19:30:44.542 INFO [stderr] 13 |     ringData: String,
Dec 12 19:30:44.542 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 12 19:30:44.542 INFO [stderr] 
Dec 12 19:30:46.278 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.31s
Dec 12 19:30:46.293 INFO [stderr] su: No module specific data is present
Dec 12 19:30:47.842 INFO running `"docker" "inspect" "8dbdec4bba6cd2bc887a4501def167a5b6653a5328f3635aa8552926a8c4b13d"`
Dec 12 19:30:48.129 INFO running `"docker" "rm" "-f" "8dbdec4bba6cd2bc887a4501def167a5b6653a5328f3635aa8552926a8c4b13d"`
Dec 12 19:30:48.511 INFO [stdout] 8dbdec4bba6cd2bc887a4501def167a5b6653a5328f3635aa8552926a8c4b13d
Dec 12 19:30:48.525 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 19:30:48.827 INFO [stdout] 5e8b0d6220b73522dc23d74e19f237bf36af01fcd72da0b93932b105eae7274d
Dec 12 19:30:48.835 INFO running `"docker" "start" "-a" "5e8b0d6220b73522dc23d74e19f237bf36af01fcd72da0b93932b105eae7274d"`
Dec 12 19:30:49.533 INFO [stderr] usermod: no changes
Dec 12 19:30:49.695 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
Dec 12 19:30:49.696 INFO [stderr]      Running /target/debug/deps/minigrep-d83241b9e188bdf4
Dec 12 19:30:49.699 INFO [stdout] 
Dec 12 19:30:49.699 INFO [stdout] running 2 tests
Dec 12 19:30:49.700 INFO [stdout] test test::case_sensitive ... ok
Dec 12 19:30:49.700 INFO [stdout] test test::case_insensitive ... ok
Dec 12 19:30:49.700 INFO [stdout] 
Dec 12 19:30:49.700 INFO [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 19:30:49.700 INFO [stdout] 
Dec 12 19:30:49.700 INFO [stderr]      Running /target/debug/deps/minigrep-d822649cad09cce7
Dec 12 19:30:49.702 INFO [stdout] 
Dec 12 19:30:49.702 INFO [stdout] running 4 tests
Dec 12 19:30:49.703 INFO [stdout] test zjw_learn::closure::tierator_demonstration ... ok
Dec 12 19:30:49.703 INFO [stdout] test zjw_learn::closure::call_with_different_values ... ok
Dec 12 19:30:49.703 INFO [stdout] test zjw_learn::closure::test_shoes_filter ... ok
Dec 12 19:30:49.703 INFO [stdout] test zjw_learn::smart_pointer::tests::it_sends_an_over_75_percent_warning_message ... ok
Dec 12 19:30:49.703 INFO [stdout] 
Dec 12 19:30:49.703 INFO [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 19:30:49.703 INFO [stdout] 
Dec 12 19:30:49.703 INFO [stderr]    Doc-tests minigrep
Dec 12 19:30:49.789 INFO [stdout] 
Dec 12 19:30:49.789 INFO [stdout] running 0 tests
Dec 12 19:30:49.789 INFO [stdout] 
Dec 12 19:30:49.789 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 12 19:30:49.789 INFO [stdout] 
Dec 12 19:30:49.798 INFO [stderr] su: No module specific data is present
Dec 12 19:30:50.120 INFO running `"docker" "inspect" "5e8b0d6220b73522dc23d74e19f237bf36af01fcd72da0b93932b105eae7274d"`
Dec 12 19:30:50.197 INFO running `"docker" "rm" "-f" "5e8b0d6220b73522dc23d74e19f237bf36af01fcd72da0b93932b105eae7274d"`
Dec 12 19:30:50.285 INFO [stdout] 5e8b0d6220b73522dc23d74e19f237bf36af01fcd72da0b93932b105eae7274d