[INFO] cloning repository https://github.com/cultofmetatron/r_monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cultofmetatron/r_monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultofmetatron%2Fr_monkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultofmetatron%2Fr_monkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ddf5036a36cc4315bb88914e2b7e59dcb32d6f5e
[INFO] testing cultofmetatron/r_monkey against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultofmetatron%2Fr_monkey" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cultofmetatron/r_monkey on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cultofmetatron/r_monkey
[INFO] finished tweaking git repo https://github.com/cultofmetatron/r_monkey
[INFO] tweaked toml for git repo https://github.com/cultofmetatron/r_monkey written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/cultofmetatron/r_monkey already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2353c1edd7935133999d406f60c253a20576c5dd1a44ec572cd15e54291724d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2353c1edd7935133999d406f60c253a20576c5dd1a44ec572cd15e54291724d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2353c1edd7935133999d406f60c253a20576c5dd1a44ec572cd15e54291724d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2353c1edd7935133999d406f60c253a20576c5dd1a44ec572cd15e54291724d0", kill_on_drop: false }`
[INFO] [stdout] 2353c1edd7935133999d406f60c253a20576c5dd1a44ec572cd15e54291724d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10134c392ece6d0cf54485f7dc9bc26a52ebd77b902cf052c85373690fbf2a06
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "10134c392ece6d0cf54485f7dc9bc26a52ebd77b902cf052c85373690fbf2a06", kill_on_drop: false }`
[INFO] [stderr]    Compiling r_monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/lexer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `skip`
[INFO] [stdout]   --> src/lexer.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut skip : bool = false;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_skip`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lexer.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut index : usize = 0;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut skip : bool = false;
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut index : usize = 0;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Asterix`
[INFO] [stdout]   --> src/lexer.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Asterix,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_complex_modifier`
[INFO] [stdout]    --> src/lexer.rs:144:6
[INFO] [stdout]     |
[INFO] [stdout] 144 |   fn is_complex_modifier(ch1: char) -> bool {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `NextChar`
[INFO] [stdout]    --> src/lexer.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 |   enum NextChar {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `peek_ahead`
[INFO] [stdout]    --> src/lexer.rs:159:6
[INFO] [stdout]     |
[INFO] [stdout] 159 |   fn peek_ahead(index: usize, aStr: &Vec<char>) -> NextChar {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `charTerator` should have a snake case name
[INFO] [stdout]   --> src/lexer.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut charTerator = input.chars().peekable();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: convert the identifier to snake case: `char_terator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `aStr` should have a snake case name
[INFO] [stdout]    --> src/lexer.rs:159:31
[INFO] [stdout]     |
[INFO] [stdout] 159 |   fn peek_ahead(index: usize, aStr: &Vec<char>) -> NextChar {
[INFO] [stdout]     |                               ^^^^ help: convert the identifier to snake case: `a_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "10134c392ece6d0cf54485f7dc9bc26a52ebd77b902cf052c85373690fbf2a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10134c392ece6d0cf54485f7dc9bc26a52ebd77b902cf052c85373690fbf2a06", kill_on_drop: false }`
[INFO] [stdout] 10134c392ece6d0cf54485f7dc9bc26a52ebd77b902cf052c85373690fbf2a06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a18d43b69c3d7cdf41b341959aea16329a162b2733ef0e6d08ef33523cf7e295
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a18d43b69c3d7cdf41b341959aea16329a162b2733ef0e6d08ef33523cf7e295", kill_on_drop: false }`
[INFO] [stderr]    Compiling r_monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/lexer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `skip`
[INFO] [stdout]   --> src/lexer.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut skip : bool = false;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_skip`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/lexer.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut index : usize = 0;
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     let mut skip : bool = false;
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |     let mut index : usize = 0;
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Asterix`
[INFO] [stdout]   --> src/lexer.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     Asterix,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_complex_modifier`
[INFO] [stdout]    --> src/lexer.rs:144:6
[INFO] [stdout]     |
[INFO] [stdout] 144 |   fn is_complex_modifier(ch1: char) -> bool {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `NextChar`
[INFO] [stdout]    --> src/lexer.rs:154:8
[INFO] [stdout]     |
[INFO] [stdout] 154 |   enum NextChar {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `peek_ahead`
[INFO] [stdout]    --> src/lexer.rs:159:6
[INFO] [stdout]     |
[INFO] [stdout] 159 |   fn peek_ahead(index: usize, aStr: &Vec<char>) -> NextChar {
[INFO] [stdout]     |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `charTerator` should have a snake case name
[INFO] [stdout]   --> src/lexer.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut charTerator = input.chars().peekable();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: convert the identifier to snake case: `char_terator`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `aStr` should have a snake case name
[INFO] [stdout]    --> src/lexer.rs:159:31
[INFO] [stdout]     |
[INFO] [stdout] 159 |   fn peek_ahead(index: usize, aStr: &Vec<char>) -> NextChar {
[INFO] [stdout]     |                               ^^^^ help: convert the identifier to snake case: `a_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "a18d43b69c3d7cdf41b341959aea16329a162b2733ef0e6d08ef33523cf7e295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a18d43b69c3d7cdf41b341959aea16329a162b2733ef0e6d08ef33523cf7e295", kill_on_drop: false }`
[INFO] [stdout] a18d43b69c3d7cdf41b341959aea16329a162b2733ef0e6d08ef33523cf7e295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 59aaf0bbdff55b0ffd2ad4878d2b14fd2a35e7f2c3d55430fd805b7308493115
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "59aaf0bbdff55b0ffd2ad4878d2b14fd2a35e7f2c3d55430fd805b7308493115", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stdout] 
[INFO] [stderr]  --> src/lexer.rs:1:5
[INFO] [stdout] running 3 tests
[INFO] [stderr]   |
[INFO] [stdout] test lexer::test_next_token_with_basic_stuff ... ok
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stdout] test lexer::test_for_keywords ... ok
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test lexer::test_special_tokens ... ok
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `skip`
[INFO] [stderr]   --> src/lexer.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let mut skip : bool = false;
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_skip`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/lexer.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut index : usize = 0;
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lexer.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let mut skip : bool = false;
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lexer.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |     let mut index : usize = 0;
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Asterix`
[INFO] [stderr]   --> src/lexer.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Asterix,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_complex_modifier`
[INFO] [stderr]    --> src/lexer.rs:144:6
[INFO] [stderr]     |
[INFO] [stderr] 144 |   fn is_complex_modifier(ch1: char) -> bool {
[INFO] [stderr]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `NextChar`
[INFO] [stderr]    --> src/lexer.rs:154:8
[INFO] [stderr]     |
[INFO] [stderr] 154 |   enum NextChar {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `peek_ahead`
[INFO] [stderr]    --> src/lexer.rs:159:6
[INFO] [stderr]     |
[INFO] [stderr] 159 |   fn peek_ahead(index: usize, aStr: &Vec<char>) -> NextChar {
[INFO] [stderr]     |      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `charTerator` should have a snake case name
[INFO] [stderr]   --> src/lexer.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut charTerator = input.chars().peekable();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: convert the identifier to snake case: `char_terator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `aStr` should have a snake case name
[INFO] [stderr]    --> src/lexer.rs:159:31
[INFO] [stderr]     |
[INFO] [stderr] 159 |   fn peek_ahead(index: usize, aStr: &Vec<char>) -> NextChar {
[INFO] [stderr]     |                               ^^^^ help: convert the identifier to snake case: `a_str`
[INFO] [stderr] 
[INFO] [stderr] warning: 11 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/r_monkey-8578a44230078c0f
[INFO] running `Command { std: "docker" "inspect" "59aaf0bbdff55b0ffd2ad4878d2b14fd2a35e7f2c3d55430fd805b7308493115", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59aaf0bbdff55b0ffd2ad4878d2b14fd2a35e7f2c3d55430fd805b7308493115", kill_on_drop: false }`
[INFO] [stdout] 59aaf0bbdff55b0ffd2ad4878d2b14fd2a35e7f2c3d55430fd805b7308493115