[INFO] updating cached repository totechite/Learning_parser_with_Rustlang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/totechite/Learning_parser_with_Rustlang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/totechite/Learning_parser_with_Rustlang" "work/ex/beta-1.38-1/sources/1.37.0/gh/totechite/Learning_parser_with_Rustlang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/totechite/Learning_parser_with_Rustlang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/totechite/Learning_parser_with_Rustlang" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/totechite/Learning_parser_with_Rustlang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/totechite/Learning_parser_with_Rustlang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da17114a434ca908ed3f134f3692de7f5c3c3a7a
[INFO] sha for GitHub repo totechite/Learning_parser_with_Rustlang: da17114a434ca908ed3f134f3692de7f5c3c3a7a
[INFO] validating manifest of totechite/Learning_parser_with_Rustlang 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 totechite/Learning_parser_with_Rustlang 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 totechite/Learning_parser_with_Rustlang
[INFO] finished frobbing totechite/Learning_parser_with_Rustlang
[INFO] frobbed toml for totechite/Learning_parser_with_Rustlang written to work/ex/beta-1.38-1/sources/1.37.0/gh/totechite/Learning_parser_with_Rustlang/Cargo.toml
[INFO] started frobbing totechite/Learning_parser_with_Rustlang
[INFO] finished frobbing totechite/Learning_parser_with_Rustlang
[INFO] frobbed toml for totechite/Learning_parser_with_Rustlang written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/totechite/Learning_parser_with_Rustlang/Cargo.toml
[INFO] crate totechite/Learning_parser_with_Rustlang 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] testing totechite/Learning_parser_with_Rustlang 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/totechite/Learning_parser_with_Rustlang:/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] 926287753d966cefa8351f15a12c3d189cb6bc6d836ffcb221e4191908f7a958
[INFO] running `"docker" "start" "-a" "926287753d966cefa8351f15a12c3d189cb6bc6d836ffcb221e4191908f7a958"`
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling rust_lexer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant `N_A` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     N_A,
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `NA`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `L_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     L_BRACKET,
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `LBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `R_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     R_BRACKET
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `RBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LexerBuilder`, `Lexer`
[INFO] [stderr]  --> src/lib.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use lexer::{Lexer, LexerBuilder};
[INFO] [stderr]   |             ^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `token::Token`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use token::Token;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `theChar`
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub theChar: Option<char>,
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `strV` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut strV = "".to_string();
[INFO] [stderr]    |                 ^^^^ help: convert the identifier to snake case: `str_v`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `N_A` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     N_A,
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `NA`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `L_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     L_BRACKET,
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `LBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `R_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     R_BRACKET
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `RBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `theChar`
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     file.read_to_string(&mut contents);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub theChar: Option<char>,
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `strV` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut strV = "".to_string();
[INFO] [stderr]    |                 ^^^^ help: convert the identifier to snake case: `str_v`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.34s
[INFO] running `"docker" "inspect" "926287753d966cefa8351f15a12c3d189cb6bc6d836ffcb221e4191908f7a958"`
[INFO] running `"docker" "rm" "-f" "926287753d966cefa8351f15a12c3d189cb6bc6d836ffcb221e4191908f7a958"`
[INFO] [stdout] 926287753d966cefa8351f15a12c3d189cb6bc6d836ffcb221e4191908f7a958
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/totechite/Learning_parser_with_Rustlang:/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] c23f2adcc3f8ae6e13573caf80aa04830126369f3350c0418d80b33c0e119979
[INFO] running `"docker" "start" "-a" "c23f2adcc3f8ae6e13573caf80aa04830126369f3350c0418d80b33c0e119979"`
[INFO] [stderr]    Compiling rust_lexer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant `N_A` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     N_A,
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `NA`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `L_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     L_BRACKET,
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `LBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `R_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     R_BRACKET
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `RBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LexerBuilder`, `Lexer`
[INFO] [stderr]  --> src/lib.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use lexer::{Lexer, LexerBuilder};
[INFO] [stderr]   |             ^^^^^  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `token::Token`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use token::Token;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `N_A` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     N_A,
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `NA`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `L_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     L_BRACKET,
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `LBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `R_BRACKET` should have an upper camel case name
[INFO] [stderr]  --> src/token.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     R_BRACKET
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `RBracket`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `theChar`
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub theChar: Option<char>,
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `strV` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut strV = "".to_string();
[INFO] [stderr]    |                 ^^^^ help: convert the identifier to snake case: `str_v`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `theChar`
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     file.read_to_string(&mut contents);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub theChar: Option<char>,
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `strV` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |         let mut strV = "".to_string();
[INFO] [stderr]    |                 ^^^^ help: convert the identifier to snake case: `str_v`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `theChar` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     theChar: char,
[INFO] [stderr]    |     ^^^^^^^ help: convert the identifier to snake case: `the_char`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "c23f2adcc3f8ae6e13573caf80aa04830126369f3350c0418d80b33c0e119979"`
[INFO] running `"docker" "rm" "-f" "c23f2adcc3f8ae6e13573caf80aa04830126369f3350c0418d80b33c0e119979"`
[INFO] [stdout] c23f2adcc3f8ae6e13573caf80aa04830126369f3350c0418d80b33c0e119979
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/totechite/Learning_parser_with_Rustlang:/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] 3eb8117de91ca9cf041cfbd6fdbcdbd561e541f74b2a033b1d466235276e788b
[INFO] running `"docker" "start" "-a" "3eb8117de91ca9cf041cfbd6fdbcdbd561e541f74b2a033b1d466235276e788b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_lexer-20231613aec981da
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_lexer-77abb3541f06f376
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust_lexer
[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] [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] [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" "3eb8117de91ca9cf041cfbd6fdbcdbd561e541f74b2a033b1d466235276e788b"`
[INFO] running `"docker" "rm" "-f" "3eb8117de91ca9cf041cfbd6fdbcdbd561e541f74b2a033b1d466235276e788b"`
[INFO] [stdout] 3eb8117de91ca9cf041cfbd6fdbcdbd561e541f74b2a033b1d466235276e788b