[INFO] updating cached repository luoyou/lexer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luoyou/lexer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luoyou/lexer" "work/ex/beta-1.38-1/sources/1.37.0/gh/luoyou/lexer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/luoyou/lexer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luoyou/lexer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luoyou/lexer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luoyou/lexer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78528ff39345d03a7a93d6a19c2921961be58a0e
[INFO] sha for GitHub repo luoyou/lexer: 78528ff39345d03a7a93d6a19c2921961be58a0e
[INFO] validating manifest of luoyou/lexer on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of luoyou/lexer on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing luoyou/lexer
[INFO] finished frobbing luoyou/lexer
[INFO] frobbed toml for luoyou/lexer written to work/ex/beta-1.38-1/sources/1.37.0/gh/luoyou/lexer/Cargo.toml
[INFO] started frobbing luoyou/lexer
[INFO] finished frobbing luoyou/lexer
[INFO] frobbed toml for luoyou/lexer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luoyou/lexer/Cargo.toml
[INFO] crate luoyou/lexer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing luoyou/lexer against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/luoyou/lexer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 498437646fcd399fcf69d5df92107be39b9e1666248ca315d112c571d603b0ca
[INFO] running `"docker" "start" "-a" "498437646fcd399fcf69d5df92107be39b9e1666248ca315d112c571d603b0ca"`
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut lexer = Lexer::new(file);
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_line_num`
[INFO] [stderr]   --> src/core/token.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn get_line_num(&self)->i32{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_type`
[INFO] [stderr]   --> src/core/token.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn get_type(&self)->&TokenType{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `has_location`
[INFO] [stderr]   --> src/core/token.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn has_location(&self)->bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_nothing`
[INFO] [stderr]   --> src/core/token.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn is_nothing(&self)->bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_type_name`
[INFO] [stderr]   --> src/core/token.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn get_type_name(&self)->&str{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Root`
[INFO] [stderr]  --> src/core/ast/astree.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Root,   // 根节点
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `child`
[INFO] [stderr]   --> src/core/ast/astree.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn child(&self, i: u8)->&Astree{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `children`
[INFO] [stderr]   --> src/core/ast/astree.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn children(&self)->&Vec<Astree>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_child_num`
[INFO] [stderr]   --> src/core/ast/astree.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn get_child_num(&self)->usize{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `location`
[INFO] [stderr]   --> src/core/ast/astree.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn location(&self)->Option<String>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]   --> src/core/ast/astree.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn to_string(&self)->String{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_lexer`
[INFO] [stderr]   --> src/main.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn test_lexer(){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "498437646fcd399fcf69d5df92107be39b9e1666248ca315d112c571d603b0ca"`
[INFO] running `"docker" "rm" "-f" "498437646fcd399fcf69d5df92107be39b9e1666248ca315d112c571d603b0ca"`
[INFO] [stdout] 498437646fcd399fcf69d5df92107be39b9e1666248ca315d112c571d603b0ca
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/luoyou/lexer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 11e1998fdc89f2c53e1dc863c670ae762b59d8a6c7836cc0ad605b901c174285
[INFO] running `"docker" "start" "-a" "11e1998fdc89f2c53e1dc863c670ae762b59d8a6c7836cc0ad605b901c174285"`
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut lexer = Lexer::new(file);
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_line_num`
[INFO] [stderr]   --> src/core/token.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn get_line_num(&self)->i32{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_type`
[INFO] [stderr]   --> src/core/token.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn get_type(&self)->&TokenType{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `has_location`
[INFO] [stderr]   --> src/core/token.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn has_location(&self)->bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_nothing`
[INFO] [stderr]   --> src/core/token.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn is_nothing(&self)->bool{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_type_name`
[INFO] [stderr]   --> src/core/token.rs:73:5
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn get_type_name(&self)->&str{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Root`
[INFO] [stderr]  --> src/core/ast/astree.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Root,   // 根节点
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `child`
[INFO] [stderr]   --> src/core/ast/astree.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn child(&self, i: u8)->&Astree{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `children`
[INFO] [stderr]   --> src/core/ast/astree.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn children(&self)->&Vec<Astree>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_child_num`
[INFO] [stderr]   --> src/core/ast/astree.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn get_child_num(&self)->usize{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `location`
[INFO] [stderr]   --> src/core/ast/astree.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn location(&self)->Option<String>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]   --> src/core/ast/astree.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn to_string(&self)->String{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_lexer`
[INFO] [stderr]   --> src/main.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn test_lexer(){
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "11e1998fdc89f2c53e1dc863c670ae762b59d8a6c7836cc0ad605b901c174285"`
[INFO] running `"docker" "rm" "-f" "11e1998fdc89f2c53e1dc863c670ae762b59d8a6c7836cc0ad605b901c174285"`
[INFO] [stdout] 11e1998fdc89f2c53e1dc863c670ae762b59d8a6c7836cc0ad605b901c174285
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/luoyou/lexer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 7a15ed8dfb87c8b126eb779323f940bfb934888a2dc982f30403be9f94c482be
[INFO] running `"docker" "start" "-a" "7a15ed8dfb87c8b126eb779323f940bfb934888a2dc982f30403be9f94c482be"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lexer-daf27a4094f19e70
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7a15ed8dfb87c8b126eb779323f940bfb934888a2dc982f30403be9f94c482be"`
[INFO] running `"docker" "rm" "-f" "7a15ed8dfb87c8b126eb779323f940bfb934888a2dc982f30403be9f94c482be"`
[INFO] [stdout] 7a15ed8dfb87c8b126eb779323f940bfb934888a2dc982f30403be9f94c482be