[INFO] cloning repository https://github.com/VengeQ/Aho_compliers_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VengeQ/Aho_compliers_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengeQ%2FAho_compliers_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengeQ%2FAho_compliers_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ade23bb0f3fdc1d61c5155f218277987741d3cb
[INFO] testing VengeQ/Aho_compliers_exercises against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVengeQ%2FAho_compliers_exercises" "/workspace/builds/worker-117/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-117/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VengeQ/Aho_compliers_exercises on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VengeQ/Aho_compliers_exercises
[INFO] finished tweaking git repo https://github.com/VengeQ/Aho_compliers_exercises
[INFO] tweaked toml for git repo https://github.com/VengeQ/Aho_compliers_exercises written to /workspace/builds/worker-117/source/Cargo.toml
[INFO] crate git repo https://github.com/VengeQ/Aho_compliers_exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex-syntax v0.6.11
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded regex v1.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83870fb321e1d0df3423be53c42a6f44454fb4729b63f5cf1de871fe383b03be
[INFO] running `Command { std: "docker" "start" "-a" "83870fb321e1d0df3423be53c42a6f44454fb4729b63f5cf1de871fe383b03be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83870fb321e1d0df3423be53c42a6f44454fb4729b63f5cf1de871fe383b03be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83870fb321e1d0df3423be53c42a6f44454fb4729b63f5cf1de871fe383b03be", kill_on_drop: false }`
[INFO] [stdout] 83870fb321e1d0df3423be53c42a6f44454fb4729b63f5cf1de871fe383b03be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25609dd1d21c82f01a8c60d659394da2a3f1ffc50eab6c8306208cd0753a8dfe
[INFO] running `Command { std: "docker" "start" "-a" "25609dd1d21c82f01a8c60d659394da2a3f1ffc50eab6c8306208cd0753a8dfe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling regex-syntax v0.6.11
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling regex v1.2.1
[INFO] [stderr]    Compiling aho_compilers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/part2/lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/part2/lexer.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (self.num.to_string())
[INFO] [stdout]    |         ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -         (self.num.to_string())
[INFO] [stdout] 69 +         self.num.to_string()
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/part2/symbols_table.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::Chars`
[INFO] [stdout]  --> src/part3/extended_lexer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]  --> src/part3/extended_lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::min;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `aho_corasick_failure`
[INFO] [stdout]  --> src/part3.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn aho_corasick_failure(input: &str) -> String{
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lookahead`
[INFO] [stdout]  --> src/part2/simple_translator.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     lookahead: char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `string`
[INFO] [stdout]  --> src/part2/simple_translator.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     string: Chars<'a>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_string`
[INFO] [stdout]   --> src/part2/simple_translator.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn from_string(input: &'a str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expr`
[INFO] [stdout]   --> src/part2/simple_translator.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn expr(&mut self) -> Result<String, String> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `term`
[INFO] [stdout]   --> src/part2/simple_translator.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn term(&mut self) -> Result<char, String> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `matcher`
[INFO] [stdout]   --> src/part2/simple_translator.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn matcher(&mut self, t: char) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NUM`
[INFO] [stdout]  --> src/part2/lexer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     NUM,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/part2/lexer.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]   |          ^^^^^                                        ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ID`
[INFO] [stdout]   --> src/part2/lexer.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     ID,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FALSE`
[INFO] [stdout]   --> src/part2/lexer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     FALSE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TRUE`
[INFO] [stdout]   --> src/part2/lexer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     TRUE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `OP`
[INFO] [stdout]   --> src/part2/lexer.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     OP,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOF`
[INFO] [stdout]   --> src/part2/lexer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     EOF
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/lexer.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(tag: Tag, word: String) -> Self { Word { tag, word } }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/lexer.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn new(value: i32) -> Self { Num { tag: Tag::NUM, num: value } }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Words`
[INFO] [stdout]   --> src/part2/lexer.rs:74:1
[INFO] [stdout]    |
[INFO] [stdout] 74 | type Words = HashMap<String, Word>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Lines`
[INFO] [stdout]   --> src/part2/lexer.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | type Lines = HashMap<usize, Box<Vec<Box<dyn Token>>>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Lexer`
[INFO] [stdout]   --> src/part2/lexer.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Lexer {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/lexer.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reserve`
[INFO] [stdout]    --> src/part2/lexer.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn reserve(&mut self, word: Word) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_char_or_return_eof`
[INFO] [stdout]    --> src/part2/lexer.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn read_char_or_return_eof(&mut self, input: &mut Chars) -> char {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `return_ptr`
[INFO] [stdout]    --> src/part2/lexer.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn return_ptr(&mut self, input: &mut Chars) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `full_scan`
[INFO] [stdout]    --> src/part2/lexer.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn full_scan(&mut self, input: &str) -> &Lines {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan`
[INFO] [stdout]    --> src/part2/lexer.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub fn scan(&mut self, input: &str) -> Box<dyn Token> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/symbols_table.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/part2/symbols_table.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn insert(&mut self, key: &str, sym: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/part2/symbols_table.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get(&self, key: &str) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn token(&self) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn from_str(s: &str) -> Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     B,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout] note: `Buffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part3/extended_lexer.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Debug, PartialEq, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^                   ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lexeme_begin`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     lexeme_begin: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `forward`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     forward: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer_idx`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     buffer_idx: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tokens`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     tokens: HashMap<String, regex::Regex>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_regex`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn init_regex() -> HashMap<String, regex::Regex> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_buffer`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn init_buffer(&mut self, input: String) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_buffer`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn change_buffer(&mut self, input: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_test`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_eof`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn is_eof(&mut self) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn scan(&mut self, input: &str) -> Option<Token> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn clear(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_buffer`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn update_buffer() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/part3/extended_lexer.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 self.buffer == Buffer::B;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let _ = self.buffer == Buffer::B;
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.73s
[INFO] running `Command { std: "docker" "inspect" "25609dd1d21c82f01a8c60d659394da2a3f1ffc50eab6c8306208cd0753a8dfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25609dd1d21c82f01a8c60d659394da2a3f1ffc50eab6c8306208cd0753a8dfe", kill_on_drop: false }`
[INFO] [stdout] 25609dd1d21c82f01a8c60d659394da2a3f1ffc50eab6c8306208cd0753a8dfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f685c0461dd7948a60d050890696ec7408d94771d31c37ae808584e5945ee0d
[INFO] running `Command { std: "docker" "start" "-a" "9f685c0461dd7948a60d050890696ec7408d94771d31c37ae808584e5945ee0d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/part2/lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/part2/lexer.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (self.num.to_string())
[INFO] [stdout]    |         ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -         (self.num.to_string())
[INFO] [stdout] 69 +         self.num.to_string()
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/part2/symbols_table.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::Chars`
[INFO] [stdout]  --> src/part3/extended_lexer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]  --> src/part3/extended_lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::min;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `aho_corasick_failure`
[INFO] [stdout]  --> src/part3.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn aho_corasick_failure(input: &str) -> String{
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lookahead`
[INFO] [stdout]  --> src/part2/simple_translator.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     lookahead: char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `string`
[INFO] [stdout]  --> src/part2/simple_translator.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     string: Chars<'a>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_string`
[INFO] [stdout]   --> src/part2/simple_translator.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn from_string(input: &'a str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expr`
[INFO] [stdout]   --> src/part2/simple_translator.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn expr(&mut self) -> Result<String, String> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `term`
[INFO] [stdout]   --> src/part2/simple_translator.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn term(&mut self) -> Result<char, String> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `matcher`
[INFO] [stdout]   --> src/part2/simple_translator.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn matcher(&mut self, t: char) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NUM`
[INFO] [stdout]  --> src/part2/lexer.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     NUM,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/part2/lexer.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]   |          ^^^^^                                        ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho_compilers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `ID`
[INFO] [stdout]   --> src/part2/lexer.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     ID,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FALSE`
[INFO] [stdout]   --> src/part2/lexer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     FALSE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TRUE`
[INFO] [stdout]   --> src/part2/lexer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     TRUE,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `OP`
[INFO] [stdout]   --> src/part2/lexer.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     OP,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOF`
[INFO] [stdout]   --> src/part2/lexer.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     EOF
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part2/lexer.rs:7:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stdout]    |          ^^^^^                                        ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/lexer.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn new(tag: Tag, word: String) -> Self { Word { tag, word } }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/lexer.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn new(value: i32) -> Self { Num { tag: Tag::NUM, num: value } }
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Words`
[INFO] [stdout]   --> src/part2/lexer.rs:74:1
[INFO] [stdout]    |
[INFO] [stdout] 74 | type Words = HashMap<String, Word>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Lines`
[INFO] [stdout]   --> src/part2/lexer.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | type Lines = HashMap<usize, Box<Vec<Box<dyn Token>>>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Lexer`
[INFO] [stdout]   --> src/part2/lexer.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Lexer {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/lexer.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reserve`
[INFO] [stdout]    --> src/part2/lexer.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn reserve(&mut self, word: Word) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_char_or_return_eof`
[INFO] [stdout]    --> src/part2/lexer.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn read_char_or_return_eof(&mut self, input: &mut Chars) -> char {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `return_ptr`
[INFO] [stdout]    --> src/part2/lexer.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn return_ptr(&mut self, input: &mut Chars) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `full_scan`
[INFO] [stdout]    --> src/part2/lexer.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn full_scan(&mut self, input: &str) -> &Lines {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan`
[INFO] [stdout]    --> src/part2/lexer.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub fn scan(&mut self, input: &str) -> Box<dyn Token> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part2/symbols_table.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/part2/symbols_table.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn insert(&mut self, key: &str, sym: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/part2/symbols_table.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get(&self, key: &str) -> Option<String> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn token(&self) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn from_str(s: &str) -> Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     B,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout] note: `Buffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/part3/extended_lexer.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 | #[derive(Debug, PartialEq, Copy, Clone)]
[INFO] [stdout]    |          ^^^^^                   ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lexeme_begin`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     lexeme_begin: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `forward`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     forward: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buffer_idx`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     buffer_idx: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tokens`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     tokens: HashMap<String, regex::Regex>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_regex`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn init_regex() -> HashMap<String, regex::Regex> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_buffer`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn init_buffer(&mut self, input: String) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `change_buffer`
[INFO] [stdout]   --> src/part3/extended_lexer.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 |     fn change_buffer(&mut self, input: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_test`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_eof`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn is_eof(&mut self) -> bool {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn scan(&mut self, input: &str) -> Option<Token> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `clear`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn clear(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_buffer`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn update_buffer() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/part3/extended_lexer.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 self.buffer == Buffer::B;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let _ = self.buffer == Buffer::B;
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/part2/lexer.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         (self.num.to_string())
[INFO] [stdout]    |         ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 69 -         (self.num.to_string())
[INFO] [stdout] 69 +         self.num.to_string()
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/part2/lexer.rs:344:13
[INFO] [stdout]     |
[INFO] [stdout] 344 |             ;
[INFO] [stdout]     |             ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/part2/symbols_table.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::Chars`
[INFO] [stdout]  --> src/part3/extended_lexer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]  --> src/part3/extended_lexer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cmp::min;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]   --> src/part2/symbols_table.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let expected: Option<Env> = None;
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Lines`
[INFO] [stdout]   --> src/part2/lexer.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | type Lines = HashMap<usize, Box<Vec<Box<dyn Token>>>>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `full_scan`
[INFO] [stdout]    --> src/part2/lexer.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn full_scan(&mut self, input: &str) -> &Lines {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_buffer`
[INFO] [stdout]    --> src/part3/extended_lexer.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn update_buffer() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused comparison that must be used
[INFO] [stdout]    --> src/part3/extended_lexer.rs:102:17
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 self.buffer == Buffer::B;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 102 |                 let _ = self.buffer == Buffer::B;
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 20.97s
[INFO] running `Command { std: "docker" "inspect" "9f685c0461dd7948a60d050890696ec7408d94771d31c37ae808584e5945ee0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f685c0461dd7948a60d050890696ec7408d94771d31c37ae808584e5945ee0d", kill_on_drop: false }`
[INFO] [stdout] 9f685c0461dd7948a60d050890696ec7408d94771d31c37ae808584e5945ee0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-117/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 45646c1ad9811da19e6e8896364809df00d1e03718549503e6169347a31855c1
[INFO] running `Command { std: "docker" "start" "-a" "45646c1ad9811da19e6e8896364809df00d1e03718549503e6169347a31855c1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> src/part2/lexer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/part2/lexer.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         (self.num.to_string())
[INFO] [stderr]    |         ^                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 69 -         (self.num.to_string())
[INFO] [stderr] 69 +         self.num.to_string()
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::DerefMut`
[INFO] [stderr]  --> src/part2/symbols_table.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::DerefMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::Chars`
[INFO] [stderr]  --> src/part3/extended_lexer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::str::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::min`
[INFO] [stderr]  --> src/part3/extended_lexer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp::min;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:108:29
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stderr]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/lib.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn main() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `aho_corasick_failure`
[INFO] [stderr]  --> src/part3.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn aho_corasick_failure(input: &str) -> String{
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `lookahead`
[INFO] [stderr]  --> src/part2/simple_translator.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     lookahead: char,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `string`
[INFO] [stderr]  --> src/part2/simple_translator.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     string: Chars<'a>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_string`
[INFO] [stderr]   --> src/part2/simple_translator.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn from_string(input: &'a str) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expr`
[INFO] [stderr]   --> src/part2/simple_translator.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn expr(&mut self) -> Result<String, String> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `term`
[INFO] [stderr]   --> src/part2/simple_translator.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn term(&mut self) -> Result<char, String> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `matcher`
[INFO] [stderr]   --> src/part2/simple_translator.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn matcher(&mut self, t: char) -> Result<(), String> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NUM`
[INFO] [stderr]  --> src/part2/lexer.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     NUM,
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/part2/lexer.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stderr]   |          ^^^^^                                        ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ID`
[INFO] [stderr]   --> src/part2/lexer.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     ID,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/part2/lexer.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stderr]    |          ^^^^^                                        ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FALSE`
[INFO] [stderr]   --> src/part2/lexer.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     FALSE,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/part2/lexer.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stderr]    |          ^^^^^                                        ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TRUE`
[INFO] [stderr]   --> src/part2/lexer.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     TRUE,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/part2/lexer.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stderr]    |          ^^^^^                                        ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `OP`
[INFO] [stderr]   --> src/part2/lexer.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     OP,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/part2/lexer.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stderr]    |          ^^^^^                                        ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EOF`
[INFO] [stderr]   --> src/part2/lexer.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     EOF
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Tag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/part2/lexer.rs:7:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | #[derive(Debug, Ord, PartialOrd, PartialEq, Eq, Hash, Clone)]
[INFO] [stderr]    |          ^^^^^                                        ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/part2/lexer.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn new(tag: Tag, word: String) -> Self { Word { tag, word } }
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/part2/lexer.rs:61:12
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn new(value: i32) -> Self { Num { tag: Tag::NUM, num: value } }
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Words`
[INFO] [stderr]   --> src/part2/lexer.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | type Words = HashMap<String, Word>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Lines`
[INFO] [stderr]   --> src/part2/lexer.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | type Lines = HashMap<usize, Box<Vec<Box<dyn Token>>>>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]   --> src/part2/lexer.rs:77:8
[INFO] [stderr]    |
[INFO] [stderr] 77 | struct Lexer {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/part2/lexer.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reserve`
[INFO] [stderr]    --> src/part2/lexer.rs:104:8
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn reserve(&mut self, word: Word) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_char_or_return_eof`
[INFO] [stderr]    --> src/part2/lexer.rs:108:8
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn read_char_or_return_eof(&mut self, input: &mut Chars) -> char {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `return_ptr`
[INFO] [stderr]    --> src/part2/lexer.rs:118:8
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn return_ptr(&mut self, input: &mut Chars) {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `full_scan`
[INFO] [stderr]    --> src/part2/lexer.rs:123:12
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub fn full_scan(&mut self, input: &str) -> &Lines {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan`
[INFO] [stderr]    --> src/part2/lexer.rs:133:12
[INFO] [stderr]     |
[INFO] [stderr] 133 |     pub fn scan(&mut self, input: &str) -> Box<dyn Token> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/part2/symbols_table.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]   --> src/part2/symbols_table.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn insert(&mut self, key: &str, sym: String) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/part2/symbols_table.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn get(&self, key: &str) -> Option<String> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `token`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn token(&self) -> String {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_str`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn from_str(s: &str) -> Self {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     B,
[INFO] [stderr]    |     ^
[INFO] [stderr]    |
[INFO] [stderr] note: `Buffer` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/part3/extended_lexer.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 | #[derive(Debug, PartialEq, Copy, Clone)]
[INFO] [stderr]    |          ^^^^^                   ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `lexeme_begin`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     lexeme_begin: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `forward`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     forward: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `buffer_idx`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     buffer_idx: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `tokens`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     tokens: HashMap<String, regex::Regex>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `init_regex`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn init_regex() -> HashMap<String, regex::Regex> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `init_buffer`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:80:8
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn init_buffer(&mut self, input: String) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `change_buffer`
[INFO] [stderr]   --> src/part3/extended_lexer.rs:99:8
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn change_buffer(&mut self, input: &str) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_test`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:108:8
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn scan_test(&mut self, input: String) -> Token {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_eof`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:112:8
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn is_eof(&mut self) -> bool {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:123:12
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub fn scan(&mut self, input: &str) -> Option<Token> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `clear`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:174:8
[INFO] [stderr]     |
[INFO] [stderr] 174 |     fn clear(&mut self) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `update_buffer`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:183:8
[INFO] [stderr]     |
[INFO] [stderr] 183 |     fn update_buffer() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused comparison that must be used
[INFO] [stderr]    --> src/part3/extended_lexer.rs:102:17
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 self.buffer == Buffer::B;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^ the comparison produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 102 |                 let _ = self.buffer == Buffer::B;
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/part2/lexer.rs:344:13
[INFO] [stderr]     |
[INFO] [stderr] 344 |             ;
[INFO] [stderr]     |             ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::DerefMut`
[INFO] [stderr]  --> src/part2/symbols_table.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::DerefMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]    --> src/part3/extended_lexer.rs:193:9
[INFO] [stderr]     |
[INFO] [stderr] 193 |     use std::time::Duration;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expected`
[INFO] [stderr]   --> src/part2/symbols_table.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let expected: Option<Env> = None;
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Lines`
[INFO] [stderr]   --> src/part2/lexer.rs:75:1
[INFO] [stderr]    |
[INFO] [stderr] 75 | type Lines = HashMap<usize, Box<Vec<Box<dyn Token>>>>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `aho_compilers` (lib) generated 51 warnings
[INFO] [stderr] warning: `aho_compilers` (lib test) generated 12 warnings (7 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/aho_compilers-b8d67092124d2ebd)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test part2::symbols_table::tests::new_env_test ... ok
[INFO] [stdout] test part3::extended_lexer::tests::token_test ... ok
[INFO] [stdout] test part2::tests::arithmetic_simple_test ... ok
[INFO] [stdout] test part2::simple_translator::tests::simple_translator_test ... ok
[INFO] [stdout] test part3::tests::aho_corasick_failure_test ... ok
[INFO] [stdout] test part2::symbols_table::tests::insert_get_test ... ok
[INFO] [stdout] test part2::lexer::tests::init_lexer_test ... ok
[INFO] [stdout] test part2::tests::rome_test ... ok
[INFO] [stdout] test part2::lexer::tests::scan_string_test ... ok
[INFO] [stdout] test part3::extended_lexer::tests::lexer_smoke_test ... ok
[INFO] [stdout] test part3::extended_lexer::tests::lexer_test ... ok
[INFO] [stdout] test part3::extended_lexer::tests::lexer_eof_test ... ok
[INFO] [stdout] test part2::lexer::tests::scan_string_panic_test - should panic ... ok
[INFO] [stdout] test part2::tests::arithmetic_incorrect_chars_in_input_test - should panic ... ok
[INFO] [stdout] test part2::symbols_table::tests::get_test_panic - should panic ... ok
[INFO] [stdout] test part2::tests::translate_to_postfix_test ... ok
[INFO] [stdout] test part2::tests::harmonic_test_smoke ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.47s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests aho_compilers
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/part2/lexer.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         (self.num.to_string())
[INFO] [stderr]    |         ^                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 69 -         (self.num.to_string())
[INFO] [stderr] 69 +         self.num.to_string()
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "45646c1ad9811da19e6e8896364809df00d1e03718549503e6169347a31855c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45646c1ad9811da19e6e8896364809df00d1e03718549503e6169347a31855c1", kill_on_drop: false }`
[INFO] [stdout] 45646c1ad9811da19e6e8896364809df00d1e03718549503e6169347a31855c1