[INFO] updating cached repository https://github.com/cultofmetatron/r_monkey
[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] ddf5036a36cc4315bb88914e2b7e59dcb32d6f5e
[INFO] checking cultofmetatron/r_monkey against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcultofmetatron%2Fr_monkey" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cultofmetatron/r_monkey on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-3/source/Cargo.toml
[INFO] crate git repo https://github.com/cultofmetatron/r_monkey already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ab8115ec78e746e4b9032d2e79b8eab7bd0988f0e60dad14622de03a810b42e
[INFO] running `"docker" "start" "-a" "4ab8115ec78e746e4b9032d2e79b8eab7bd0988f0e60dad14622de03a810b42e"`
[INFO] [stderr]     Checking r_monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/lexer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/lexer.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[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: 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: 11 warnings emitted
[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 dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "4ab8115ec78e746e4b9032d2e79b8eab7bd0988f0e60dad14622de03a810b42e"`
[INFO] running `"docker" "rm" "-f" "4ab8115ec78e746e4b9032d2e79b8eab7bd0988f0e60dad14622de03a810b42e"`
[INFO] [stdout] 4ab8115ec78e746e4b9032d2e79b8eab7bd0988f0e60dad14622de03a810b42e