[INFO] updating cached repository https://github.com/arashout/craftinginterperter
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e58c8ee40d4289d943954ca6ba33f833d75f47dd
[INFO] testing arashout/craftinginterperter against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farashout%2Fcraftinginterperter" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arashout/craftinginterperter on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/arashout/craftinginterperter
[INFO] finished tweaking git repo https://github.com/arashout/craftinginterperter
[INFO] tweaked toml for git repo https://github.com/arashout/craftinginterperter written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/arashout/craftinginterperter already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3987ee3315098f75ee00b17a82fbb6b2acbdb306c2a2c3140a0d99b306b48b70
[INFO] running `"docker" "start" "-a" "3987ee3315098f75ee00b17a82fbb6b2acbdb306c2a2c3140a0d99b306b48b70"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling strum v0.17.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling strum_macros v0.17.1
[INFO] [stderr]    Compiling craft_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/parser.rs:110:12
[INFO] [stderr]     |
[INFO] [stderr] 110 |         if (!self.is_at_end()) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `discriminant`
[INFO] [stderr]   --> src/scanner.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn discriminant(&self) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Binary`
[INFO] [stderr]    --> src/ast.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     Binary(Operator, Box<Expr>, Box<Expr>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Grouping`
[INFO] [stderr]    --> src/ast.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 |     Grouping(Box<Expr>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]    --> src/ast.rs:103:5
[INFO] [stderr]     |
[INFO] [stderr] 103 |     Literal(Primitive),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unary`
[INFO] [stderr]    --> src/ast.rs:104:5
[INFO] [stderr]     |
[INFO] [stderr] 104 |     Unary(Operator, Box<Expr>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Parser {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/parser.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: Vec<TokenWrapper>) -> Parser {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expression`
[INFO] [stderr]   --> src/parser.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn expression(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `equality`
[INFO] [stderr]   --> src/parser.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn equality(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `comparison`
[INFO] [stderr]   --> src/parser.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn comparison(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `addition`
[INFO] [stderr]   --> src/parser.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn addition(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `multiplication`
[INFO] [stderr]   --> src/parser.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn multiplication(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unary`
[INFO] [stderr]   --> src/parser.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn unary(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `primary`
[INFO] [stderr]   --> src/parser.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn primary(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check`
[INFO] [stderr]    --> src/parser.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn check(&self, needle: &Token) -> bool {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]    --> src/parser.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn advance(&mut self) -> &Token {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_at_end`
[INFO] [stderr]    --> src/parser.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]    --> src/parser.rs:120:8
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn peek(&self) -> &Token {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `previous`
[INFO] [stderr]    --> src/parser.rs:132:8
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn previous(&self) -> &TokenWrapper {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rpn`
[INFO] [stderr]  --> src/rpn.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn rpn(expr: &Expr) -> String {
[INFO] [stderr]   |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `join_vec_debug`
[INFO] [stderr]  --> src/utils.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn join_vec_debug<T: Debug>(vec: &Vec<T>) -> String {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `s`
[INFO] [stderr]   --> src/utils.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn s(_s: &'static str) -> String {
[INFO] [stderr]    |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: 23 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.56s
[INFO] running `"docker" "inspect" "3987ee3315098f75ee00b17a82fbb6b2acbdb306c2a2c3140a0d99b306b48b70"`
[INFO] running `"docker" "rm" "-f" "3987ee3315098f75ee00b17a82fbb6b2acbdb306c2a2c3140a0d99b306b48b70"`
[INFO] [stdout] 3987ee3315098f75ee00b17a82fbb6b2acbdb306c2a2c3140a0d99b306b48b70
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 14763b95c243c589a0963d45a5381630ae93622c9e2436767d008e1124e9419e
[INFO] running `"docker" "start" "-a" "14763b95c243c589a0963d45a5381630ae93622c9e2436767d008e1124e9419e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling craft_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/parser.rs:110:12
[INFO] [stderr]     |
[INFO] [stderr] 110 |         if (!self.is_at_end()) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Parser {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/parser.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: Vec<TokenWrapper>) -> Parser {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expression`
[INFO] [stderr]   --> src/parser.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn expression(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `equality`
[INFO] [stderr]   --> src/parser.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn equality(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `comparison`
[INFO] [stderr]   --> src/parser.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn comparison(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `addition`
[INFO] [stderr]   --> src/parser.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn addition(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `multiplication`
[INFO] [stderr]   --> src/parser.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn multiplication(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unary`
[INFO] [stderr]   --> src/parser.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn unary(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `primary`
[INFO] [stderr]   --> src/parser.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn primary(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check`
[INFO] [stderr]    --> src/parser.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn check(&self, needle: &Token) -> bool {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]    --> src/parser.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn advance(&mut self) -> &Token {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_at_end`
[INFO] [stderr]    --> src/parser.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]    --> src/parser.rs:120:8
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn peek(&self) -> &Token {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `previous`
[INFO] [stderr]    --> src/parser.rs:132:8
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn previous(&self) -> &TokenWrapper {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `"docker" "inspect" "14763b95c243c589a0963d45a5381630ae93622c9e2436767d008e1124e9419e"`
[INFO] running `"docker" "rm" "-f" "14763b95c243c589a0963d45a5381630ae93622c9e2436767d008e1124e9419e"`
[INFO] [stdout] 14763b95c243c589a0963d45a5381630ae93622c9e2436767d008e1124e9419e
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 37647415d38531b3670907b7acb5f960c8f6e90d5687790cf4229bd777706b3c
[INFO] running `"docker" "start" "-a" "37647415d38531b3670907b7acb5f960c8f6e90d5687790cf4229bd777706b3c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/parser.rs:110:12
[INFO] [stderr]     |
[INFO] [stderr] 110 |         if (!self.is_at_end()) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Parser {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/parser.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: Vec<TokenWrapper>) -> Parser {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expression`
[INFO] [stderr]   --> src/parser.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn expression(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `equality`
[INFO] [stderr]   --> src/parser.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn equality(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `comparison`
[INFO] [stderr]   --> src/parser.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn comparison(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `addition`
[INFO] [stderr]   --> src/parser.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn addition(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `multiplication`
[INFO] [stderr]   --> src/parser.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn multiplication(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unary`
[INFO] [stderr]   --> src/parser.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn unary(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `primary`
[INFO] [stderr]   --> src/parser.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn primary(&mut self) -> Expr {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check`
[INFO] [stderr]    --> src/parser.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn check(&self, needle: &Token) -> bool {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]    --> src/parser.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn advance(&mut self) -> &Token {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_at_end`
[INFO] [stderr]    --> src/parser.rs:116:8
[INFO] [stderr]     |
[INFO] [stderr] 116 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]    --> src/parser.rs:120:8
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn peek(&self) -> &Token {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `previous`
[INFO] [stderr]    --> src/parser.rs:132:8
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn previous(&self) -> &TokenWrapper {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/craft_interpreter-17480e95c50242dc
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test scanner::tests::test_scanner_errors ... ok
[INFO] [stdout] test ast::tests::test_ast_print ... ok
[INFO] [stdout] test rpn::tests::test_rpn ... ok
[INFO] [stdout] test scanner::tests::test_scan_tokens ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "37647415d38531b3670907b7acb5f960c8f6e90d5687790cf4229bd777706b3c"`
[INFO] running `"docker" "rm" "-f" "37647415d38531b3670907b7acb5f960c8f6e90d5687790cf4229bd777706b3c"`
[INFO] [stdout] 37647415d38531b3670907b7acb5f960c8f6e90d5687790cf4229bd777706b3c