Nov 01 04:46:03.593 INFO checking gannonchan/var_study against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 04:46:03.593 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 01 04:46:04.041 INFO blam! 743c46a91377c992798d8ef3ee3bb6fa6402313ff35aedeae1f287c06b413aa4
Nov 01 04:46:04.048 INFO running `"docker" "start" "-a" "743c46a91377c992798d8ef3ee3bb6fa6402313ff35aedeae1f287c06b413aa4"`
Nov 01 04:46:05.129 INFO kablam! usermod: no changes
Nov 01 04:46:05.176 INFO kablam!     Checking var_study v0.1.0 (/source)
Nov 01 04:46:05.888 INFO kablam! warning: unused variable: `first_name`
Nov 01 04:46:05.888 INFO kablam!   --> src/main.rs:23:9
Nov 01 04:46:05.888 INFO kablam!    |
Nov 01 04:46:05.888 INFO kablam! 23 |     let first_name = String::from("0");
Nov 01 04:46:05.888 INFO kablam!    |         ^^^^^^^^^^ help: consider using `_first_name` instead
Nov 01 04:46:05.888 INFO kablam!    |
Nov 01 04:46:05.888 INFO kablam!    = note: #[warn(unused_variables)] on by default
Nov 01 04:46:05.888 INFO kablam! 
Nov 01 04:46:05.888 INFO kablam! warning: unused variable: `last_name`
Nov 01 04:46:05.888 INFO kablam!   --> src/main.rs:24:9
Nov 01 04:46:05.888 INFO kablam!    |
Nov 01 04:46:05.888 INFO kablam! 24 |     let last_name = String::from("张三");
Nov 01 04:46:05.888 INFO kablam!    |         ^^^^^^^^^ help: consider using `_last_name` instead
Nov 01 04:46:05.888 INFO kablam! 
Nov 01 04:46:05.888 INFO kablam! warning: unused variable: `f`
Nov 01 04:46:05.888 INFO kablam!   --> src/main.rs:73:9
Nov 01 04:46:05.888 INFO kablam!    |
Nov 01 04:46:05.888 INFO kablam! 73 |     let f = match f {   //使用match判断打开文件是否出现错误
Nov 01 04:46:05.888 INFO kablam!    |         ^ help: consider using `_f` instead
Nov 01 04:46:05.888 INFO kablam! 
Nov 01 04:46:05.888 INFO kablam! warning: unused variable: `f`
Nov 01 04:46:05.888 INFO kablam!   --> src/main.rs:95:9
Nov 01 04:46:05.888 INFO kablam!    |
Nov 01 04:46:05.888 INFO kablam! 95 |     let f = File::open("d:\\hello.txt").unwrap();
Nov 01 04:46:05.888 INFO kablam!    |         ^ help: consider using `_f` instead
Nov 01 04:46:05.888 INFO kablam! 
Nov 01 04:46:05.888 INFO kablam! warning: unused variable: `f`
Nov 01 04:46:05.888 INFO kablam!   --> src/main.rs:97:9
Nov 01 04:46:05.888 INFO kablam!    |
Nov 01 04:46:05.888 INFO kablam! 97 |     let f = File::open("d:\\hello.txt").expect("打开文件发生错误！");
Nov 01 04:46:05.888 INFO kablam!    |         ^ help: consider using `_f` instead
Nov 01 04:46:05.888 INFO kablam! 
Nov 01 04:46:05.948 INFO kablam! warning: unused variable: `first_name`
Nov 01 04:46:05.948 INFO kablam!   --> src/main.rs:23:9
Nov 01 04:46:05.948 INFO kablam!    |
Nov 01 04:46:05.948 INFO kablam! 23 |     let first_name = String::from("0");
Nov 01 04:46:05.948 INFO kablam!    |         ^^^^^^^^^^ help: consider using `_first_name` instead
Nov 01 04:46:05.948 INFO kablam!    |
Nov 01 04:46:05.948 INFO kablam!    = note: #[warn(unused_variables)] on by default
Nov 01 04:46:05.948 INFO kablam! 
Nov 01 04:46:05.948 INFO kablam! warning: unused variable: `last_name`
Nov 01 04:46:05.948 INFO kablam!   --> src/main.rs:24:9
Nov 01 04:46:05.948 INFO kablam!    |
Nov 01 04:46:05.948 INFO kablam! 24 |     let last_name = String::from("张三");
Nov 01 04:46:05.948 INFO kablam!    |         ^^^^^^^^^ help: consider using `_last_name` instead
Nov 01 04:46:05.948 INFO kablam! 
Nov 01 04:46:05.948 INFO kablam! warning: unused variable: `f`
Nov 01 04:46:05.948 INFO kablam!   --> src/main.rs:73:9
Nov 01 04:46:05.948 INFO kablam!    |
Nov 01 04:46:05.948 INFO kablam! 73 |     let f = match f {   //使用match判断打开文件是否出现错误
Nov 01 04:46:05.949 INFO kablam!    |         ^ help: consider using `_f` instead
Nov 01 04:46:05.949 INFO kablam! 
Nov 01 04:46:05.949 INFO kablam! warning: unused variable: `f`
Nov 01 04:46:05.949 INFO kablam!   --> src/main.rs:95:9
Nov 01 04:46:05.949 INFO kablam!    |
Nov 01 04:46:05.949 INFO kablam! 95 |     let f = File::open("d:\\hello.txt").unwrap();
Nov 01 04:46:05.949 INFO kablam!    |         ^ help: consider using `_f` instead
Nov 01 04:46:05.949 INFO kablam! 
Nov 01 04:46:05.949 INFO kablam! warning: unused variable: `f`
Nov 01 04:46:05.949 INFO kablam!   --> src/main.rs:97:9
Nov 01 04:46:05.949 INFO kablam!    |
Nov 01 04:46:05.949 INFO kablam! 97 |     let f = File::open("d:\\hello.txt").expect("打开文件发生错误！");
Nov 01 04:46:05.949 INFO kablam!    |         ^ help: consider using `_f` instead
Nov 01 04:46:05.949 INFO kablam! 
Nov 01 04:46:06.020 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Nov 01 04:46:06.020 INFO kablam! su: No module specific data is present
Nov 01 04:46:06.522 INFO running `"docker" "rm" "-f" "743c46a91377c992798d8ef3ee3bb6fa6402313ff35aedeae1f287c06b413aa4"`
Nov 01 04:46:06.683 INFO blam! 743c46a91377c992798d8ef3ee3bb6fa6402313ff35aedeae1f287c06b413aa4