Dec 11 18:10:58.674 INFO checking gannonchan/var_study against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 18:10:58.674 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-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 11 18:10:59.260 INFO [stdout] ea0f204c86d2e5f85c6db042f46f141322a23af9bd353141ba117f061d7db2e0
Dec 11 18:10:59.268 INFO running `"docker" "start" "-a" "ea0f204c86d2e5f85c6db042f46f141322a23af9bd353141ba117f061d7db2e0"`
Dec 11 18:11:00.536 INFO [stderr] usermod: no changes
Dec 11 18:11:00.596 INFO [stderr]     Checking var_study v0.1.0 (/source)
Dec 11 18:11:01.063 INFO [stderr] warning: unused variable: `first_name`
Dec 11 18:11:01.063 INFO [stderr]   --> src/main.rs:23:9
Dec 11 18:11:01.064 INFO [stderr]    |
Dec 11 18:11:01.064 INFO [stderr] 23 |     let first_name = String::from("0");
Dec 11 18:11:01.064 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_first_name` instead
Dec 11 18:11:01.065 INFO [stderr]    |
Dec 11 18:11:01.065 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:11:01.065 INFO [stderr] 
Dec 11 18:11:01.068 INFO [stderr] warning: unused variable: `last_name`
Dec 11 18:11:01.069 INFO [stderr]   --> src/main.rs:24:9
Dec 11 18:11:01.069 INFO [stderr]    |
Dec 11 18:11:01.069 INFO [stderr] 24 |     let last_name = String::from("张三");
Dec 11 18:11:01.069 INFO [stderr]    |         ^^^^^^^^^ help: consider using `_last_name` instead
Dec 11 18:11:01.069 INFO [stderr] 
Dec 11 18:11:01.070 INFO [stderr] warning: unused variable: `f`
Dec 11 18:11:01.070 INFO [stderr]   --> src/main.rs:73:9
Dec 11 18:11:01.070 INFO [stderr]    |
Dec 11 18:11:01.071 INFO [stderr] 73 |     let f = match f {   //使用match判断打开文件是否出现错误
Dec 11 18:11:01.071 INFO [stderr]    |         ^ help: consider using `_f` instead
Dec 11 18:11:01.071 INFO [stderr] 
Dec 11 18:11:01.072 INFO [stderr] warning: unused variable: `f`
Dec 11 18:11:01.072 INFO [stderr]   --> src/main.rs:95:9
Dec 11 18:11:01.072 INFO [stderr]    |
Dec 11 18:11:01.072 INFO [stderr] 95 |     let f = File::open("d:\\hello.txt").unwrap();
Dec 11 18:11:01.072 INFO [stderr]    |         ^ help: consider using `_f` instead
Dec 11 18:11:01.073 INFO [stderr] 
Dec 11 18:11:01.073 INFO [stderr] warning: unused variable: `f`
Dec 11 18:11:01.073 INFO [stderr]   --> src/main.rs:97:9
Dec 11 18:11:01.074 INFO [stderr]    |
Dec 11 18:11:01.074 INFO [stderr] 97 |     let f = File::open("d:\\hello.txt").expect("打开文件发生错误！");
Dec 11 18:11:01.074 INFO [stderr]    |         ^ help: consider using `_f` instead
Dec 11 18:11:01.074 INFO [stderr] 
Dec 11 18:11:01.320 INFO [stderr] warning: unused variable: `first_name`
Dec 11 18:11:01.320 INFO [stderr]   --> src/main.rs:23:9
Dec 11 18:11:01.320 INFO [stderr]    |
Dec 11 18:11:01.320 INFO [stderr] 23 |     let first_name = String::from("0");
Dec 11 18:11:01.320 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_first_name` instead
Dec 11 18:11:01.320 INFO [stderr]    |
Dec 11 18:11:01.320 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:11:01.320 INFO [stderr] 
Dec 11 18:11:01.320 INFO [stderr] warning: unused variable: `last_name`
Dec 11 18:11:01.320 INFO [stderr]   --> src/main.rs:24:9
Dec 11 18:11:01.320 INFO [stderr]    |
Dec 11 18:11:01.320 INFO [stderr] 24 |     let last_name = String::from("张三");
Dec 11 18:11:01.320 INFO [stderr]    |         ^^^^^^^^^ help: consider using `_last_name` instead
Dec 11 18:11:01.320 INFO [stderr] 
Dec 11 18:11:01.320 INFO [stderr] warning: unused variable: `f`
Dec 11 18:11:01.320 INFO [stderr]   --> src/main.rs:73:9
Dec 11 18:11:01.320 INFO [stderr]    |
Dec 11 18:11:01.320 INFO [stderr] 73 |     let f = match f {   //使用match判断打开文件是否出现错误
Dec 11 18:11:01.321 INFO [stderr]    |         ^ help: consider using `_f` instead
Dec 11 18:11:01.321 INFO [stderr] 
Dec 11 18:11:01.321 INFO [stderr] warning: unused variable: `f`
Dec 11 18:11:01.321 INFO [stderr]   --> src/main.rs:95:9
Dec 11 18:11:01.321 INFO [stderr]    |
Dec 11 18:11:01.321 INFO [stderr] 95 |     let f = File::open("d:\\hello.txt").unwrap();
Dec 11 18:11:01.321 INFO [stderr]    |         ^ help: consider using `_f` instead
Dec 11 18:11:01.321 INFO [stderr] 
Dec 11 18:11:01.321 INFO [stderr] warning: unused variable: `f`
Dec 11 18:11:01.321 INFO [stderr]   --> src/main.rs:97:9
Dec 11 18:11:01.321 INFO [stderr]    |
Dec 11 18:11:01.321 INFO [stderr] 97 |     let f = File::open("d:\\hello.txt").expect("打开文件发生错误！");
Dec 11 18:11:01.321 INFO [stderr]    |         ^ help: consider using `_f` instead
Dec 11 18:11:01.321 INFO [stderr] 
Dec 11 18:11:01.377 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
Dec 11 18:11:01.379 INFO [stderr] su: No module specific data is present
Dec 11 18:11:02.495 INFO running `"docker" "inspect" "ea0f204c86d2e5f85c6db042f46f141322a23af9bd353141ba117f061d7db2e0"`
Dec 11 18:11:02.907 INFO running `"docker" "rm" "-f" "ea0f204c86d2e5f85c6db042f46f141322a23af9bd353141ba117f061d7db2e0"`
Dec 11 18:11:03.216 INFO [stdout] ea0f204c86d2e5f85c6db042f46f141322a23af9bd353141ba117f061d7db2e0