Dec 17 22:20:05.903 INFO checking jhoudan/monkey-rs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 22:20:05.904 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/jhoudan/monkey-rs:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 22:20:06.318 INFO [stdout] 894267aa9cf8648bb42c3b3722afd2e36e7daaa44873b3ca2f397fb5d9ff78d0
Dec 17 22:20:06.320 INFO running `"docker" "start" "-a" "894267aa9cf8648bb42c3b3722afd2e36e7daaa44873b3ca2f397fb5d9ff78d0"`
Dec 17 22:20:08.686 INFO [stderr]     Checking monkey v0.1.0 (/opt/crater/workdir)
Dec 17 22:20:09.007 INFO [stderr] warning: unused import: `token::Token`
Dec 17 22:20:09.007 INFO [stderr]  --> src/main.rs:9:5
Dec 17 22:20:09.007 INFO [stderr]   |
Dec 17 22:20:09.007 INFO [stderr] 9 | use token::Token;
Dec 17 22:20:09.007 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 22:20:09.007 INFO [stderr]   |
Dec 17 22:20:09.007 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 22:20:09.007 INFO [stderr] 
Dec 17 22:20:09.088 INFO [stderr] warning: unused import: `token::Token`
Dec 17 22:20:09.089 INFO [stderr]  --> src/main.rs:9:5
Dec 17 22:20:09.089 INFO [stderr]   |
Dec 17 22:20:09.089 INFO [stderr] 9 | use token::Token;
Dec 17 22:20:09.090 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 22:20:09.090 INFO [stderr]   |
Dec 17 22:20:09.091 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 22:20:09.091 INFO [stderr] 
Dec 17 22:20:09.172 INFO [stderr] warning: struct is never constructed: `Program`
Dec 17 22:20:09.172 INFO [stderr]  --> src/ast.rs:7:1
Dec 17 22:20:09.172 INFO [stderr]   |
Dec 17 22:20:09.172 INFO [stderr] 7 | pub struct Program {
Dec 17 22:20:09.172 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.172 INFO [stderr]   |
Dec 17 22:20:09.173 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 22:20:09.173 INFO [stderr] 
Dec 17 22:20:09.173 INFO [stderr] warning: method is never used: `new`
Dec 17 22:20:09.173 INFO [stderr]   --> src/ast.rs:12:5
Dec 17 22:20:09.173 INFO [stderr]    |
Dec 17 22:20:09.173 INFO [stderr] 12 |     pub fn new() -> Program {
Dec 17 22:20:09.173 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.173 INFO [stderr] 
Dec 17 22:20:09.173 INFO [stderr] warning: method is never used: `token_literal`
Dec 17 22:20:09.173 INFO [stderr]   --> src/ast.rs:16:5
Dec 17 22:20:09.173 INFO [stderr]    |
Dec 17 22:20:09.173 INFO [stderr] 16 |     fn token_literal(&self) -> String {
Dec 17 22:20:09.173 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.173 INFO [stderr] 
Dec 17 22:20:09.173 INFO [stderr] warning: struct is never constructed: `Statement`
Dec 17 22:20:09.173 INFO [stderr]   --> src/ast.rs:27:1
Dec 17 22:20:09.173 INFO [stderr]    |
Dec 17 22:20:09.173 INFO [stderr] 27 | pub struct Statement {
Dec 17 22:20:09.173 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.173 INFO [stderr] 
Dec 17 22:20:09.173 INFO [stderr] warning: method is never used: `token_literal`
Dec 17 22:20:09.173 INFO [stderr]   --> src/ast.rs:34:5
Dec 17 22:20:09.173 INFO [stderr]    |
Dec 17 22:20:09.173 INFO [stderr] 34 |     fn token_literal(&self) -> String {
Dec 17 22:20:09.173 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.174 INFO [stderr] 
Dec 17 22:20:09.174 INFO [stderr] warning: struct is never constructed: `Expression`
Dec 17 22:20:09.174 INFO [stderr]   --> src/ast.rs:39:1
Dec 17 22:20:09.174 INFO [stderr]    |
Dec 17 22:20:09.174 INFO [stderr] 39 | struct Expression;
Dec 17 22:20:09.174 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.174 INFO [stderr] 
Dec 17 22:20:09.174 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 17 22:20:09.174 INFO [stderr]  --> src/parser.rs:7:1
Dec 17 22:20:09.174 INFO [stderr]   |
Dec 17 22:20:09.174 INFO [stderr] 7 | pub struct Parser<'a> {
Dec 17 22:20:09.174 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.174 INFO [stderr] 
Dec 17 22:20:09.180 INFO [stderr] warning: method is never used: `new`
Dec 17 22:20:09.180 INFO [stderr]   --> src/parser.rs:15:5
Dec 17 22:20:09.180 INFO [stderr]    |
Dec 17 22:20:09.180 INFO [stderr] 15 |     fn new(mut lexer: Lexer) -> Parser {
Dec 17 22:20:09.180 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.180 INFO [stderr] 
Dec 17 22:20:09.180 INFO [stderr] warning: method is never used: `next_token`
Dec 17 22:20:09.180 INFO [stderr]   --> src/parser.rs:26:5
Dec 17 22:20:09.180 INFO [stderr]    |
Dec 17 22:20:09.180 INFO [stderr] 26 |     fn next_token(&mut self) {
Dec 17 22:20:09.180 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.180 INFO [stderr] 
Dec 17 22:20:09.180 INFO [stderr] warning: method is never used: `take_current_token`
Dec 17 22:20:09.181 INFO [stderr]   --> src/parser.rs:30:5
Dec 17 22:20:09.181 INFO [stderr]    |
Dec 17 22:20:09.181 INFO [stderr] 30 |     fn take_current_token(&mut self) -> Token {
Dec 17 22:20:09.181 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.181 INFO [stderr] 
Dec 17 22:20:09.181 INFO [stderr] warning: method is never used: `parse_program`
Dec 17 22:20:09.181 INFO [stderr]   --> src/parser.rs:34:5
Dec 17 22:20:09.181 INFO [stderr]    |
Dec 17 22:20:09.181 INFO [stderr] 34 |     fn parse_program(&mut self) -> Program {
Dec 17 22:20:09.181 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.181 INFO [stderr] 
Dec 17 22:20:09.181 INFO [stderr] warning: method is never used: `parse_statement`
Dec 17 22:20:09.181 INFO [stderr]   --> src/parser.rs:47:5
Dec 17 22:20:09.181 INFO [stderr]    |
Dec 17 22:20:09.181 INFO [stderr] 47 |     fn parse_statement(&mut self) -> Option<Statement> {
Dec 17 22:20:09.181 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.181 INFO [stderr] 
Dec 17 22:20:09.181 INFO [stderr] warning: method is never used: `parse_let_statement`
Dec 17 22:20:09.181 INFO [stderr]   --> src/parser.rs:54:5
Dec 17 22:20:09.181 INFO [stderr]    |
Dec 17 22:20:09.181 INFO [stderr] 54 |     fn parse_let_statement(&mut self) -> Option<Statement> {
Dec 17 22:20:09.181 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.181 INFO [stderr] 
Dec 17 22:20:09.284 INFO [stderr] warning: unused variable: `lexer`
Dec 17 22:20:09.284 INFO [stderr]    --> src/lexer.rs:186:17
Dec 17 22:20:09.284 INFO [stderr]     |
Dec 17 22:20:09.284 INFO [stderr] 186 |         let mut lexer = Lexer::new(input);
Dec 17 22:20:09.284 INFO [stderr]     |                 ^^^^^ help: consider using `_lexer` instead
Dec 17 22:20:09.284 INFO [stderr]     |
Dec 17 22:20:09.284 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 22:20:09.284 INFO [stderr] 
Dec 17 22:20:09.320 INFO [stderr] warning: variable does not need to be mutable
Dec 17 22:20:09.320 INFO [stderr]    --> src/lexer.rs:186:13
Dec 17 22:20:09.320 INFO [stderr]     |
Dec 17 22:20:09.320 INFO [stderr] 186 |         let mut lexer = Lexer::new(input);
Dec 17 22:20:09.320 INFO [stderr]     |             ----^^^^^
Dec 17 22:20:09.320 INFO [stderr]     |             |
Dec 17 22:20:09.320 INFO [stderr]     |             help: remove this `mut`
Dec 17 22:20:09.320 INFO [stderr]     |
Dec 17 22:20:09.320 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 22:20:09.320 INFO [stderr] 
Dec 17 22:20:09.333 INFO [stderr] warning: method is never used: `token_literal`
Dec 17 22:20:09.333 INFO [stderr]   --> src/ast.rs:16:5
Dec 17 22:20:09.333 INFO [stderr]    |
Dec 17 22:20:09.333 INFO [stderr] 16 |     fn token_literal(&self) -> String {
Dec 17 22:20:09.333 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.333 INFO [stderr]    |
Dec 17 22:20:09.333 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 22:20:09.334 INFO [stderr] 
Dec 17 22:20:09.334 INFO [stderr] warning: method is never used: `token_literal`
Dec 17 22:20:09.334 INFO [stderr]   --> src/ast.rs:34:5
Dec 17 22:20:09.334 INFO [stderr]    |
Dec 17 22:20:09.334 INFO [stderr] 34 |     fn token_literal(&self) -> String {
Dec 17 22:20:09.334 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.334 INFO [stderr] 
Dec 17 22:20:09.334 INFO [stderr] warning: struct is never constructed: `Expression`
Dec 17 22:20:09.334 INFO [stderr]   --> src/ast.rs:39:1
Dec 17 22:20:09.334 INFO [stderr]    |
Dec 17 22:20:09.334 INFO [stderr] 39 | struct Expression;
Dec 17 22:20:09.334 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 17 22:20:09.334 INFO [stderr] 
Dec 17 22:20:09.400 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Dec 17 22:20:10.556 INFO running `"docker" "inspect" "894267aa9cf8648bb42c3b3722afd2e36e7daaa44873b3ca2f397fb5d9ff78d0"`
Dec 17 22:20:10.966 INFO running `"docker" "rm" "-f" "894267aa9cf8648bb42c3b3722afd2e36e7daaa44873b3ca2f397fb5d9ff78d0"`
Dec 17 22:20:11.209 INFO [stdout] 894267aa9cf8648bb42c3b3722afd2e36e7daaa44873b3ca2f397fb5d9ff78d0