[INFO] cloning repository https://github.com/BaiXinKe/Monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BaiXinKe/Monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaiXinKe%2FMonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaiXinKe%2FMonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bcd55acfd5ebb2889e8b46dcb667e3b3374fc2d
[INFO] checking BaiXinKe/Monkey against master#a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb for pr-151109
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaiXinKe%2FMonkey" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BaiXinKe/Monkey
[INFO] finished tweaking git repo https://github.com/BaiXinKe/Monkey
[INFO] tweaked toml for git repo https://github.com/BaiXinKe/Monkey written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BaiXinKe/Monkey on toolchain a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BaiXinKe/Monkey already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 116750719c8897041889a1325fb955d6454d5f3de839e466f98cef9878ff253c
[INFO] running `Command { std: "docker" "start" "-a" "116750719c8897041889a1325fb955d6454d5f3de839e466f98cef9878ff253c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "116750719c8897041889a1325fb955d6454d5f3de839e466f98cef9878ff253c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116750719c8897041889a1325fb955d6454d5f3de839e466f98cef9878ff253c", kill_on_drop: false }`
[INFO] [stdout] 116750719c8897041889a1325fb955d6454d5f3de839e466f98cef9878ff253c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a6acf0f07f0ed1c12e26dc0db3b9bf1d0504a0bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08e58789e662cd4da4fddd2b1876faa803657d4fefaec217a5c3e7ebc46c28e4
[INFO] running `Command { std: "docker" "start" "-a" "08e58789e662cd4da4fddd2b1876faa803657d4fefaec217a5c3e7ebc46c28e4", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/parser.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ast::{self, Identifier, Statement},
[INFO] [stdout]   |                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/parser.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ast::{self, Identifier, Statement},
[INFO] [stdout]   |                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Node` is never used
[INFO] [stdout]  --> src/ast.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Node {
[INFO] [stdout]   |           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Statement` is never used
[INFO] [stdout]  --> src/ast.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub trait Statement: Node {
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Expression` is never used
[INFO] [stdout]   --> src/ast.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Expression: Node {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]   --> src/ast.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Program {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LetStatement` is never constructed
[INFO] [stdout]   --> src/ast.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct LetStatement {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Identifier` is never constructed
[INFO] [stdout]   --> src/ast.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub struct Identifier {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]  --> src/parser.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Parser<'a> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/parser.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 17 |     fn new(mut lexer: Lexer<'a>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn next_token(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn expect_peek(&mut self, tok: TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn cur_token_is(&self, tok: TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn parse_let_statement(&mut self) -> Option<Box<dyn Statement>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     fn parse_statement(&mut self) -> Option<Box<dyn Statement>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn parser_program(&mut self) -> Option<ast::Program> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `literal` is never read
[INFO] [stdout]   --> src/token.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 87 |     pub(crate) typee: TokenType,
[INFO] [stdout] 88 |     pub(crate) literal: String,
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `downcast_ref_unchecked` found for reference `&(dyn Any + 'static)` in the current scope
[INFO] [stdout]    --> src/parser.rs:139:35
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let let_stmt = unsafe { s.downcast_ref_unchecked::<Box<LetStatement>>() };
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `downcast_ref` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 139 -         let let_stmt = unsafe { s.downcast_ref_unchecked::<Box<LetStatement>>() };
[INFO] [stdout] 139 +         let let_stmt = unsafe { s.downcast_ref::<Box<LetStatement>>() };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `monkey` (bin "monkey" test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "08e58789e662cd4da4fddd2b1876faa803657d4fefaec217a5c3e7ebc46c28e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08e58789e662cd4da4fddd2b1876faa803657d4fefaec217a5c3e7ebc46c28e4", kill_on_drop: false }`
[INFO] [stdout] 08e58789e662cd4da4fddd2b1876faa803657d4fefaec217a5c3e7ebc46c28e4
