Dec 05 03:51:43.765 INFO testing totechite/Learning_parser_with_Rustlang against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 03:51:43.766 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-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 05 03:51:44.208 INFO [stdout] 6d6f81486d395ef909b89485b43255cd29284edb250ea3c1781e03f187accd4d
Dec 05 03:51:44.210 INFO running `"docker" "start" "-a" "6d6f81486d395ef909b89485b43255cd29284edb250ea3c1781e03f187accd4d"`
Dec 05 03:51:45.256 INFO [stderr] usermod: no changes
Dec 05 03:51:45.340 INFO [stderr]    Compiling libc v0.2.42
Dec 05 03:51:45.352 INFO [stderr]    Compiling thread_local v0.3.5
Dec 05 03:51:47.216 INFO [stderr]    Compiling memchr v2.0.1
Dec 05 03:51:47.799 INFO [stderr]    Compiling aho-corasick v0.6.6
Dec 05 03:51:48.606 INFO [stderr]    Compiling regex v1.0.2
Dec 05 03:51:59.344 INFO [stderr]    Compiling rust_lexer v0.1.0 (/source)
Dec 05 03:51:59.584 INFO [stderr] warning: unused imports: `LexerBuilder`, `Lexer`
Dec 05 03:51:59.584 INFO [stderr]  --> src/lib.rs:7:13
Dec 05 03:51:59.584 INFO [stderr]   |
Dec 05 03:51:59.584 INFO [stderr] 7 | use lexer::{Lexer, LexerBuilder};
Dec 05 03:51:59.584 INFO [stderr]   |             ^^^^^  ^^^^^^^^^^^^
Dec 05 03:51:59.584 INFO [stderr]   |
Dec 05 03:51:59.584 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 03:51:59.584 INFO [stderr] 
Dec 05 03:51:59.584 INFO [stderr] warning: unused import: `token::Token`
Dec 05 03:51:59.584 INFO [stderr]  --> src/lib.rs:8:5
Dec 05 03:51:59.584 INFO [stderr]   |
Dec 05 03:51:59.584 INFO [stderr] 8 | use token::Token;
Dec 05 03:51:59.584 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 05 03:51:59.584 INFO [stderr] 
Dec 05 03:51:59.688 INFO [stderr] warning: field is never used: `theChar`
Dec 05 03:51:59.688 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:51:59.688 INFO [stderr]    |
Dec 05 03:51:59.688 INFO [stderr] 86 |     theChar: char,
Dec 05 03:51:59.688 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:51:59.688 INFO [stderr]    |
Dec 05 03:51:59.688 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:51:59.688 INFO [stderr] 
Dec 05 03:51:59.688 INFO [stderr] warning: variant `N_A` should have a camel case name such as `NA`
Dec 05 03:51:59.688 INFO [stderr]  --> src/token.rs:3:5
Dec 05 03:51:59.688 INFO [stderr]   |
Dec 05 03:51:59.689 INFO [stderr] 3 |     N_A,
Dec 05 03:51:59.689 INFO [stderr]   |     ^^^
Dec 05 03:51:59.689 INFO [stderr]   |
Dec 05 03:51:59.689 INFO [stderr]   = note: #[warn(non_camel_case_types)] on by default
Dec 05 03:51:59.689 INFO [stderr] 
Dec 05 03:51:59.689 INFO [stderr] warning: variant `L_BRACKET` should have a camel case name such as `LBracket`
Dec 05 03:51:59.689 INFO [stderr]  --> src/token.rs:7:5
Dec 05 03:51:59.689 INFO [stderr]   |
Dec 05 03:51:59.689 INFO [stderr] 7 |     L_BRACKET,
Dec 05 03:51:59.689 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:51:59.689 INFO [stderr] 
Dec 05 03:51:59.689 INFO [stderr] warning: variant `R_BRACKET` should have a camel case name such as `RBracket`
Dec 05 03:51:59.689 INFO [stderr]  --> src/token.rs:8:5
Dec 05 03:51:59.689 INFO [stderr]   |
Dec 05 03:51:59.689 INFO [stderr] 8 |     R_BRACKET
Dec 05 03:51:59.689 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:51:59.689 INFO [stderr] 
Dec 05 03:51:59.689 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:51:59.689 INFO [stderr]   --> src/lexer.rs:10:5
Dec 05 03:51:59.689 INFO [stderr]    |
Dec 05 03:51:59.689 INFO [stderr] 10 |     pub theChar: Option<char>,
Dec 05 03:51:59.689 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:51:59.689 INFO [stderr]    |
Dec 05 03:51:59.689 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 05 03:51:59.689 INFO [stderr] 
Dec 05 03:51:59.689 INFO [stderr] warning: variable `strV` should have a snake case name such as `str_v`
Dec 05 03:51:59.689 INFO [stderr]   --> src/lexer.rs:42:13
Dec 05 03:51:59.689 INFO [stderr]    |
Dec 05 03:51:59.689 INFO [stderr] 42 |         let mut strV = "".to_string();
Dec 05 03:51:59.689 INFO [stderr]    |             ^^^^^^^^
Dec 05 03:51:59.689 INFO [stderr] 
Dec 05 03:51:59.689 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:51:59.689 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:51:59.689 INFO [stderr]    |
Dec 05 03:51:59.689 INFO [stderr] 86 |     theChar: char,
Dec 05 03:51:59.689 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:51:59.689 INFO [stderr] 
Dec 05 03:52:00.358 INFO [stderr] warning: field is never used: `theChar`
Dec 05 03:52:00.358 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:52:00.358 INFO [stderr]    |
Dec 05 03:52:00.358 INFO [stderr] 86 |     theChar: char,
Dec 05 03:52:00.358 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:52:00.358 INFO [stderr]    |
Dec 05 03:52:00.358 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:52:00.358 INFO [stderr] 
Dec 05 03:52:00.359 INFO [stderr] warning: variant `N_A` should have a camel case name such as `NA`
Dec 05 03:52:00.359 INFO [stderr]  --> src/token.rs:3:5
Dec 05 03:52:00.359 INFO [stderr]   |
Dec 05 03:52:00.359 INFO [stderr] 3 |     N_A,
Dec 05 03:52:00.359 INFO [stderr]   |     ^^^
Dec 05 03:52:00.359 INFO [stderr]   |
Dec 05 03:52:00.359 INFO [stderr]   = note: #[warn(non_camel_case_types)] on by default
Dec 05 03:52:00.359 INFO [stderr] 
Dec 05 03:52:00.359 INFO [stderr] warning: variant `L_BRACKET` should have a camel case name such as `LBracket`
Dec 05 03:52:00.359 INFO [stderr]  --> src/token.rs:7:5
Dec 05 03:52:00.359 INFO [stderr]   |
Dec 05 03:52:00.359 INFO [stderr] 7 |     L_BRACKET,
Dec 05 03:52:00.359 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:52:00.359 INFO [stderr] 
Dec 05 03:52:00.359 INFO [stderr] warning: variant `R_BRACKET` should have a camel case name such as `RBracket`
Dec 05 03:52:00.359 INFO [stderr]  --> src/token.rs:8:5
Dec 05 03:52:00.359 INFO [stderr]   |
Dec 05 03:52:00.359 INFO [stderr] 8 |     R_BRACKET
Dec 05 03:52:00.359 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:52:00.359 INFO [stderr] 
Dec 05 03:52:00.359 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:52:00.359 INFO [stderr]   --> src/lexer.rs:10:5
Dec 05 03:52:00.359 INFO [stderr]    |
Dec 05 03:52:00.360 INFO [stderr] 10 |     pub theChar: Option<char>,
Dec 05 03:52:00.360 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:52:00.360 INFO [stderr]    |
Dec 05 03:52:00.360 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 05 03:52:00.360 INFO [stderr] 
Dec 05 03:52:00.360 INFO [stderr] warning: variable `strV` should have a snake case name such as `str_v`
Dec 05 03:52:00.360 INFO [stderr]   --> src/lexer.rs:42:13
Dec 05 03:52:00.360 INFO [stderr]    |
Dec 05 03:52:00.360 INFO [stderr] 42 |         let mut strV = "".to_string();
Dec 05 03:52:00.360 INFO [stderr]    |             ^^^^^^^^
Dec 05 03:52:00.360 INFO [stderr] 
Dec 05 03:52:00.360 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:52:00.360 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:52:00.360 INFO [stderr]    |
Dec 05 03:52:00.360 INFO [stderr] 86 |     theChar: char,
Dec 05 03:52:00.360 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:52:00.360 INFO [stderr] 
Dec 05 03:52:00.372 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 03:52:00.372 INFO [stderr]   --> src/main.rs:12:5
Dec 05 03:52:00.372 INFO [stderr]    |
Dec 05 03:52:00.372 INFO [stderr] 12 |     file.read_to_string(&mut contents);
Dec 05 03:52:00.372 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:52:00.372 INFO [stderr]    |
Dec 05 03:52:00.372 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 03:52:00.372 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 03:52:00.372 INFO [stderr] 
Dec 05 03:52:01.860 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.57s
Dec 05 03:52:01.860 INFO [stderr] su: No module specific data is present
Dec 05 03:52:02.716 INFO running `"docker" "inspect" "6d6f81486d395ef909b89485b43255cd29284edb250ea3c1781e03f187accd4d"`
Dec 05 03:52:03.020 INFO running `"docker" "rm" "-f" "6d6f81486d395ef909b89485b43255cd29284edb250ea3c1781e03f187accd4d"`
Dec 05 03:52:03.359 INFO [stdout] 6d6f81486d395ef909b89485b43255cd29284edb250ea3c1781e03f187accd4d
Dec 05 03:52:03.366 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-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 05 03:52:03.814 INFO [stdout] ef4cbe5ba266e0b3fa2a803c539f9c6ffe3b282e51819206cb0988a20793cbf3
Dec 05 03:52:03.818 INFO running `"docker" "start" "-a" "ef4cbe5ba266e0b3fa2a803c539f9c6ffe3b282e51819206cb0988a20793cbf3"`
Dec 05 03:52:05.091 INFO [stderr] usermod: no changes
Dec 05 03:52:05.192 INFO [stderr]    Compiling rust_lexer v0.1.0 (/source)
Dec 05 03:52:05.628 INFO [stderr] warning: unused imports: `LexerBuilder`, `Lexer`
Dec 05 03:52:05.628 INFO [stderr]  --> src/lib.rs:7:13
Dec 05 03:52:05.628 INFO [stderr]   |
Dec 05 03:52:05.628 INFO [stderr] 7 | use lexer::{Lexer, LexerBuilder};
Dec 05 03:52:05.628 INFO [stderr]   |             ^^^^^  ^^^^^^^^^^^^
Dec 05 03:52:05.628 INFO [stderr]   |
Dec 05 03:52:05.628 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 03:52:05.628 INFO [stderr] 
Dec 05 03:52:05.628 INFO [stderr] warning: unused import: `token::Token`
Dec 05 03:52:05.628 INFO [stderr]  --> src/lib.rs:8:5
Dec 05 03:52:05.628 INFO [stderr]   |
Dec 05 03:52:05.628 INFO [stderr] 8 | use token::Token;
Dec 05 03:52:05.628 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 05 03:52:05.628 INFO [stderr] 
Dec 05 03:52:05.716 INFO [stderr] warning: field is never used: `theChar`
Dec 05 03:52:05.716 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:52:05.716 INFO [stderr]    |
Dec 05 03:52:05.716 INFO [stderr] 86 |     theChar: char,
Dec 05 03:52:05.716 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:52:05.716 INFO [stderr]    |
Dec 05 03:52:05.716 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:52:05.716 INFO [stderr] 
Dec 05 03:52:05.716 INFO [stderr] warning: variant `N_A` should have a camel case name such as `NA`
Dec 05 03:52:05.716 INFO [stderr]  --> src/token.rs:3:5
Dec 05 03:52:05.716 INFO [stderr]   |
Dec 05 03:52:05.716 INFO [stderr] 3 |     N_A,
Dec 05 03:52:05.716 INFO [stderr]   |     ^^^
Dec 05 03:52:05.716 INFO [stderr]   |
Dec 05 03:52:05.716 INFO [stderr]   = note: #[warn(non_camel_case_types)] on by default
Dec 05 03:52:05.716 INFO [stderr] 
Dec 05 03:52:05.716 INFO [stderr] warning: variant `L_BRACKET` should have a camel case name such as `LBracket`
Dec 05 03:52:05.716 INFO [stderr]  --> src/token.rs:7:5
Dec 05 03:52:05.716 INFO [stderr]   |
Dec 05 03:52:05.716 INFO [stderr] 7 |     L_BRACKET,
Dec 05 03:52:05.716 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:52:05.716 INFO [stderr] 
Dec 05 03:52:05.716 INFO [stderr] warning: variant `R_BRACKET` should have a camel case name such as `RBracket`
Dec 05 03:52:05.716 INFO [stderr]  --> src/token.rs:8:5
Dec 05 03:52:05.716 INFO [stderr]   |
Dec 05 03:52:05.716 INFO [stderr] 8 |     R_BRACKET
Dec 05 03:52:05.716 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:52:05.716 INFO [stderr] 
Dec 05 03:52:05.716 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:52:05.716 INFO [stderr]   --> src/lexer.rs:10:5
Dec 05 03:52:05.716 INFO [stderr]    |
Dec 05 03:52:05.716 INFO [stderr] 10 |     pub theChar: Option<char>,
Dec 05 03:52:05.716 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:52:05.716 INFO [stderr]    |
Dec 05 03:52:05.716 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 05 03:52:05.716 INFO [stderr] 
Dec 05 03:52:05.716 INFO [stderr] warning: variable `strV` should have a snake case name such as `str_v`
Dec 05 03:52:05.716 INFO [stderr]   --> src/lexer.rs:42:13
Dec 05 03:52:05.716 INFO [stderr]    |
Dec 05 03:52:05.716 INFO [stderr] 42 |         let mut strV = "".to_string();
Dec 05 03:52:05.716 INFO [stderr]    |             ^^^^^^^^
Dec 05 03:52:05.716 INFO [stderr] 
Dec 05 03:52:05.728 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:52:05.728 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:52:05.728 INFO [stderr]    |
Dec 05 03:52:05.728 INFO [stderr] 86 |     theChar: char,
Dec 05 03:52:05.728 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:52:05.728 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: field is never used: `theChar`
Dec 05 03:52:05.883 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:52:05.883 INFO [stderr]    |
Dec 05 03:52:05.883 INFO [stderr] 86 |     theChar: char,
Dec 05 03:52:05.883 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:52:05.883 INFO [stderr]    |
Dec 05 03:52:05.883 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: variant `N_A` should have a camel case name such as `NA`
Dec 05 03:52:05.883 INFO [stderr]  --> src/token.rs:3:5
Dec 05 03:52:05.883 INFO [stderr]   |
Dec 05 03:52:05.883 INFO [stderr] 3 |     N_A,
Dec 05 03:52:05.883 INFO [stderr]   |     ^^^
Dec 05 03:52:05.883 INFO [stderr]   |
Dec 05 03:52:05.883 INFO [stderr]   = note: #[warn(non_camel_case_types)] on by default
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: variant `L_BRACKET` should have a camel case name such as `LBracket`
Dec 05 03:52:05.883 INFO [stderr]  --> src/token.rs:7:5
Dec 05 03:52:05.883 INFO [stderr]   |
Dec 05 03:52:05.883 INFO [stderr] 7 |     L_BRACKET,
Dec 05 03:52:05.883 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: variant `R_BRACKET` should have a camel case name such as `RBracket`
Dec 05 03:52:05.883 INFO [stderr]  --> src/token.rs:8:5
Dec 05 03:52:05.883 INFO [stderr]   |
Dec 05 03:52:05.883 INFO [stderr] 8 |     R_BRACKET
Dec 05 03:52:05.883 INFO [stderr]   |     ^^^^^^^^^
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:52:05.883 INFO [stderr]   --> src/lexer.rs:10:5
Dec 05 03:52:05.883 INFO [stderr]    |
Dec 05 03:52:05.883 INFO [stderr] 10 |     pub theChar: Option<char>,
Dec 05 03:52:05.883 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:52:05.883 INFO [stderr]    |
Dec 05 03:52:05.883 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: variable `strV` should have a snake case name such as `str_v`
Dec 05 03:52:05.883 INFO [stderr]   --> src/lexer.rs:42:13
Dec 05 03:52:05.883 INFO [stderr]    |
Dec 05 03:52:05.883 INFO [stderr] 42 |         let mut strV = "".to_string();
Dec 05 03:52:05.883 INFO [stderr]    |             ^^^^^^^^
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.883 INFO [stderr] warning: structure field `theChar` should have a snake case name such as `the_char`
Dec 05 03:52:05.883 INFO [stderr]   --> src/lexer.rs:86:5
Dec 05 03:52:05.883 INFO [stderr]    |
Dec 05 03:52:05.883 INFO [stderr] 86 |     theChar: char,
Dec 05 03:52:05.883 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 05 03:52:05.883 INFO [stderr] 
Dec 05 03:52:05.908 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 03:52:05.908 INFO [stderr]   --> src/main.rs:12:5
Dec 05 03:52:05.908 INFO [stderr]    |
Dec 05 03:52:05.908 INFO [stderr] 12 |     file.read_to_string(&mut contents);
Dec 05 03:52:05.908 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:52:05.908 INFO [stderr]    |
Dec 05 03:52:05.908 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 03:52:05.908 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 03:52:05.908 INFO [stderr] 
Dec 05 03:52:06.396 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
Dec 05 03:52:06.397 INFO [stderr] su: No module specific data is present
Dec 05 03:52:07.137 INFO running `"docker" "inspect" "ef4cbe5ba266e0b3fa2a803c539f9c6ffe3b282e51819206cb0988a20793cbf3"`
Dec 05 03:52:07.390 INFO running `"docker" "rm" "-f" "ef4cbe5ba266e0b3fa2a803c539f9c6ffe3b282e51819206cb0988a20793cbf3"`
Dec 05 03:52:07.668 INFO [stdout] ef4cbe5ba266e0b3fa2a803c539f9c6ffe3b282e51819206cb0988a20793cbf3
Dec 05 03:52:07.672 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-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 05 03:52:08.117 INFO [stdout] 641c86253ae29e8ae4442b73ac0c6f157dbdca220b253cde3f51d76bdf8099a0
Dec 05 03:52:08.124 INFO running `"docker" "start" "-a" "641c86253ae29e8ae4442b73ac0c6f157dbdca220b253cde3f51d76bdf8099a0"`
Dec 05 03:52:09.348 INFO [stderr] usermod: no changes
Dec 05 03:52:09.429 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 05 03:52:09.429 INFO [stdout] 
Dec 05 03:52:09.429 INFO [stderr]      Running /target/debug/deps/rust_lexer-86e62b0e784a05d0
Dec 05 03:52:09.429 INFO [stdout] running 0 tests
Dec 05 03:52:09.429 INFO [stdout] 
Dec 05 03:52:09.430 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 03:52:09.430 INFO [stdout] 
Dec 05 03:52:09.432 INFO [stderr]      Running /target/debug/deps/rust_lexer-389766cfb6839e58
Dec 05 03:52:09.434 INFO [stdout] 
Dec 05 03:52:09.434 INFO [stdout] running 0 tests
Dec 05 03:52:09.434 INFO [stdout] 
Dec 05 03:52:09.434 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 03:52:09.434 INFO [stdout] 
Dec 05 03:52:09.440 INFO [stderr]    Doc-tests rust_lexer
Dec 05 03:52:09.806 INFO [stdout] 
Dec 05 03:52:09.806 INFO [stdout] running 0 tests
Dec 05 03:52:09.806 INFO [stdout] 
Dec 05 03:52:09.806 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 03:52:09.806 INFO [stdout] 
Dec 05 03:52:09.815 INFO [stderr] su: No module specific data is present
Dec 05 03:52:10.380 INFO running `"docker" "inspect" "641c86253ae29e8ae4442b73ac0c6f157dbdca220b253cde3f51d76bdf8099a0"`
Dec 05 03:52:10.642 INFO running `"docker" "rm" "-f" "641c86253ae29e8ae4442b73ac0c6f157dbdca220b253cde3f51d76bdf8099a0"`
Dec 05 03:52:10.888 INFO [stdout] 641c86253ae29e8ae4442b73ac0c6f157dbdca220b253cde3f51d76bdf8099a0