Nov 30 02:40:36.920 INFO checking gannonchan/var_study against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 02:40:36.920 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 02:40:37.312 INFO [stdout] 5ad999b7a0beb96371d97e2144b5661b57faaa9a4b7a37845c89f42d676034d5
Nov 30 02:40:37.318 INFO running `"docker" "start" "-a" "5ad999b7a0beb96371d97e2144b5661b57faaa9a4b7a37845c89f42d676034d5"`
Nov 30 02:40:38.320 INFO [stderr] usermod: no changes
Nov 30 02:40:38.379 INFO [stderr]     Checking var_study v0.1.0 (/source)
Nov 30 02:40:39.086 INFO [stderr] warning: unused variable: `first_name`
Nov 30 02:40:39.086 INFO [stderr]   --> src/main.rs:23:9
Nov 30 02:40:39.086 INFO [stderr]    |
Nov 30 02:40:39.086 INFO [stderr] 23 |     let first_name = String::from("0");
Nov 30 02:40:39.086 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_first_name` instead
Nov 30 02:40:39.086 INFO [stderr]    |
Nov 30 02:40:39.086 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 02:40:39.086 INFO [stderr] 
Nov 30 02:40:39.086 INFO [stderr] warning: unused variable: `last_name`
Nov 30 02:40:39.086 INFO [stderr]   --> src/main.rs:24:9
Nov 30 02:40:39.086 INFO [stderr]    |
Nov 30 02:40:39.086 INFO [stderr] 24 |     let last_name = String::from("张三");
Nov 30 02:40:39.086 INFO [stderr]    |         ^^^^^^^^^ help: consider using `_last_name` instead
Nov 30 02:40:39.086 INFO [stderr] 
Nov 30 02:40:39.086 INFO [stderr] warning: unused variable: `f`
Nov 30 02:40:39.086 INFO [stderr]   --> src/main.rs:73:9
Nov 30 02:40:39.086 INFO [stderr]    |
Nov 30 02:40:39.086 INFO [stderr] 73 |     let f = match f {   //使用match判断打开文件是否出现错误
Nov 30 02:40:39.086 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 30 02:40:39.086 INFO [stderr] 
Nov 30 02:40:39.087 INFO [stderr] warning: unused variable: `f`
Nov 30 02:40:39.087 INFO [stderr]   --> src/main.rs:95:9
Nov 30 02:40:39.087 INFO [stderr]    |
Nov 30 02:40:39.087 INFO [stderr] 95 |     let f = File::open("d:\\hello.txt").unwrap();
Nov 30 02:40:39.087 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 30 02:40:39.087 INFO [stderr] 
Nov 30 02:40:39.087 INFO [stderr] warning: unused variable: `f`
Nov 30 02:40:39.087 INFO [stderr]   --> src/main.rs:97:9
Nov 30 02:40:39.087 INFO [stderr]    |
Nov 30 02:40:39.087 INFO [stderr] 97 |     let f = File::open("d:\\hello.txt").expect("打开文件发生错误！");
Nov 30 02:40:39.087 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 30 02:40:39.087 INFO [stderr] 
Nov 30 02:40:39.182 INFO [stderr] warning: unused variable: `first_name`
Nov 30 02:40:39.186 INFO [stderr]   --> src/main.rs:23:9
Nov 30 02:40:39.186 INFO [stderr]    |
Nov 30 02:40:39.186 INFO [stderr] 23 |     let first_name = String::from("0");
Nov 30 02:40:39.186 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_first_name` instead
Nov 30 02:40:39.186 INFO [stderr]    |
Nov 30 02:40:39.186 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 02:40:39.186 INFO [stderr] 
Nov 30 02:40:39.186 INFO [stderr] warning: unused variable: `last_name`
Nov 30 02:40:39.186 INFO [stderr]   --> src/main.rs:24:9
Nov 30 02:40:39.186 INFO [stderr]    |
Nov 30 02:40:39.186 INFO [stderr] 24 |     let last_name = String::from("张三");
Nov 30 02:40:39.186 INFO [stderr]    |         ^^^^^^^^^ help: consider using `_last_name` instead
Nov 30 02:40:39.186 INFO [stderr] 
Nov 30 02:40:39.186 INFO [stderr] warning: unused variable: `f`
Nov 30 02:40:39.186 INFO [stderr]   --> src/main.rs:73:9
Nov 30 02:40:39.186 INFO [stderr]    |
Nov 30 02:40:39.186 INFO [stderr] 73 |     let f = match f {   //使用match判断打开文件是否出现错误
Nov 30 02:40:39.186 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 30 02:40:39.186 INFO [stderr] 
Nov 30 02:40:39.186 INFO [stderr] warning: unused variable: `f`
Nov 30 02:40:39.186 INFO [stderr]   --> src/main.rs:95:9
Nov 30 02:40:39.186 INFO [stderr]    |
Nov 30 02:40:39.187 INFO [stderr] 95 |     let f = File::open("d:\\hello.txt").unwrap();
Nov 30 02:40:39.187 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 30 02:40:39.187 INFO [stderr] 
Nov 30 02:40:39.187 INFO [stderr] warning: unused variable: `f`
Nov 30 02:40:39.187 INFO [stderr]   --> src/main.rs:97:9
Nov 30 02:40:39.187 INFO [stderr]    |
Nov 30 02:40:39.187 INFO [stderr] 97 |     let f = File::open("d:\\hello.txt").expect("打开文件发生错误！");
Nov 30 02:40:39.187 INFO [stderr]    |         ^ help: consider using `_f` instead
Nov 30 02:40:39.187 INFO [stderr] 
Nov 30 02:40:39.247 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Nov 30 02:40:39.249 INFO [stderr] su: No module specific data is present
Nov 30 02:40:39.952 INFO running `"docker" "inspect" "5ad999b7a0beb96371d97e2144b5661b57faaa9a4b7a37845c89f42d676034d5"`
Nov 30 02:40:40.195 INFO running `"docker" "rm" "-f" "5ad999b7a0beb96371d97e2144b5661b57faaa9a4b7a37845c89f42d676034d5"`
Nov 30 02:40:40.437 INFO [stdout] 5ad999b7a0beb96371d97e2144b5661b57faaa9a4b7a37845c89f42d676034d5