[INFO] cloning repository https://github.com/bdrobinson/monkey
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bdrobinson/monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdrobinson%2Fmonkey"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdrobinson%2Fmonkey'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a98032b78800896471ed4496ba1aa1fce57b027
[INFO] checking bdrobinson/monkey against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbdrobinson%2Fmonkey" "/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/bdrobinson/monkey on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bdrobinson/monkey
[INFO] finished tweaking git repo https://github.com/bdrobinson/monkey
[INFO] tweaked toml for git repo https://github.com/bdrobinson/monkey written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/bdrobinson/monkey already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "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=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" "+13f916f63bc6575d5ff1f989237dfabe88981368" "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] 3022a4db8a1d2a27ea6030f8b6f78b4d1b36f99614750244dcdf45cc2138eeb6
[INFO] running `"docker" "start" "-a" "3022a4db8a1d2a27ea6030f8b6f78b4d1b36f99614750244dcdf45cc2138eeb6"`
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Program`
[INFO] [stderr]  --> src/ast/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Program(Program),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Let`
[INFO] [stderr]  --> src/ast/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Let(LetStatement),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Identifier`
[INFO] [stderr]   --> src/ast/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Identifier(Identifier),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ParserResult`
[INFO] [stderr]  --> src/parser/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | type ParserResult<T> = Result<T, String>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser/mod.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Parser<'a> {
[INFO] [stderr]   |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/parser/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn new(lexer: &mut lexer::Lexer) -> Parser {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_token`
[INFO] [stderr]   --> src/parser/mod.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn next_token(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_program`
[INFO] [stderr]   --> src/parser/mod.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn parse_program(&mut self) -> Result<ast::Program, String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_let_statement`
[INFO] [stderr]   --> src/parser/mod.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn parse_let_statement(&mut self) -> ParserResult<ast::LetStatement> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_expression`
[INFO] [stderr]   --> src/parser/mod.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn parse_expression(&mut self) -> ParserResult<ast::Expression> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parserErr`
[INFO] [stderr]   --> src/parser/mod.rs:92:4
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn parserErr(expected: &'static str, actual: &Token) -> String {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parserErr` should have a snake case name
[INFO] [stderr]   --> src/parser/mod.rs:92:4
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn parserErr(expected: &'static str, actual: &Token) -> String {
[INFO] [stderr]    |    ^^^^^^^^^ help: convert the identifier to snake case: `parser_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Program`
[INFO] [stderr]  --> src/ast/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Program(Program),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Identifier`
[INFO] [stderr]   --> src/ast/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Identifier(Identifier),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parserErr` should have a snake case name
[INFO] [stderr]   --> src/parser/mod.rs:92:4
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn parserErr(expected: &'static str, actual: &Token) -> String {
[INFO] [stderr]    |    ^^^^^^^^^ help: convert the identifier to snake case: `parser_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `"docker" "inspect" "3022a4db8a1d2a27ea6030f8b6f78b4d1b36f99614750244dcdf45cc2138eeb6"`
[INFO] running `"docker" "rm" "-f" "3022a4db8a1d2a27ea6030f8b6f78b4d1b36f99614750244dcdf45cc2138eeb6"`
[INFO] [stdout] 3022a4db8a1d2a27ea6030f8b6f78b4d1b36f99614750244dcdf45cc2138eeb6