[INFO] updating cached repository riku179/monkey-lang-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/riku179/monkey-lang-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/riku179/monkey-lang-rust" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/riku179/monkey-lang-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/riku179/monkey-lang-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/riku179/monkey-lang-rust" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/riku179/monkey-lang-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/riku179/monkey-lang-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4369e91f757cbf3d2960148cf59e1c7f156bf4a
[INFO] sha for GitHub repo riku179/monkey-lang-rust: d4369e91f757cbf3d2960148cf59e1c7f156bf4a
[INFO] validating manifest of riku179/monkey-lang-rust on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of riku179/monkey-lang-rust on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing riku179/monkey-lang-rust
[INFO] finished frobbing riku179/monkey-lang-rust
[INFO] frobbed toml for riku179/monkey-lang-rust written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/riku179/monkey-lang-rust/Cargo.toml
[INFO] started frobbing riku179/monkey-lang-rust
[INFO] finished frobbing riku179/monkey-lang-rust
[INFO] frobbed toml for riku179/monkey-lang-rust written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/riku179/monkey-lang-rust/Cargo.toml
[INFO] crate riku179/monkey-lang-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking riku179/monkey-lang-rust against try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-3/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/riku179/monkey-lang-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4cc3536abffb071487147ea68cb819af8276cce16c110d8cde9629b7c08e621f
[INFO] running `"docker" "start" "-a" "4cc3536abffb071487147ea68cb819af8276cce16c110d8cde9629b7c08e621f"`
[INFO] [stderr]     Checking ascii v0.9.1
[INFO] [stderr]     Checking monkey_lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `Statement`
[INFO] [stderr]  --> src/ast/mod.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub enum Statement {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Expression`
[INFO] [stderr]   --> src/ast/mod.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub enum Expression {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Program`
[INFO] [stderr]   --> src/ast/mod.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Program {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/ast/mod.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn new() -> Program {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LetStatement`
[INFO] [stderr]   --> src/ast/mod.rs:61:1
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub struct LetStatement {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ReturnStatement`
[INFO] [stderr]   --> src/ast/mod.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub struct ReturnStatement {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ExpressionStatement`
[INFO] [stderr]   --> src/ast/mod.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub struct ExpressionStatement {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Identifier`
[INFO] [stderr]   --> src/ast/mod.rs:98:1
[INFO] [stderr]    |
[INFO] [stderr] 98 | pub struct Identifier {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser/mod.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct Parser<'a> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/parser/mod.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn new(lex: &'a mut lexer::Lexer) -> Parser<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_token`
[INFO] [stderr]   --> src/parser/mod.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn next_token(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_program`
[INFO] [stderr]   --> src/parser/mod.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn parse_program(&mut self) -> ast::Program {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_statement`
[INFO] [stderr]   --> src/parser/mod.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn parse_statement(&mut self) -> Option<Statement> {
[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) -> Option<Statement> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_return_statement`
[INFO] [stderr]   --> src/parser/mod.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn parse_return_statement(&mut self) -> Option<Statement> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cur_token_is`
[INFO] [stderr]   --> src/parser/mod.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn cur_token_is(&self, tok: token::TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_token_is`
[INFO] [stderr]   --> src/parser/mod.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn peek_token_is(&self, tok: token::TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_peek`
[INFO] [stderr]   --> src/parser/mod.rs:99:5
[INFO] [stderr]    |
[INFO] [stderr] 99 |     fn expect_peek(&mut self, tok: token::TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_error`
[INFO] [stderr]    --> src/parser/mod.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fn peek_error(&mut self, tok: token::TokenType) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `illegal`
[INFO] [stderr]   --> src/token/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn illegal() -> Token {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ILLEGAL`
[INFO] [stderr]   --> src/token/mod.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub const ILLEGAL: TokenType = "ILLEGAL";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expression`
[INFO] [stderr]   --> src/ast/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Expression(ExpressionStatement),
[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:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Identifier(Identifier)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `illegal`
[INFO] [stderr]   --> src/token/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn illegal() -> Token {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ILLEGAL`
[INFO] [stderr]   --> src/token/mod.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub const ILLEGAL: TokenType = "ILLEGAL";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "4cc3536abffb071487147ea68cb819af8276cce16c110d8cde9629b7c08e621f"`
[INFO] running `"docker" "rm" "-f" "4cc3536abffb071487147ea68cb819af8276cce16c110d8cde9629b7c08e621f"`
[INFO] [stdout] 4cc3536abffb071487147ea68cb819af8276cce16c110d8cde9629b7c08e621f