[INFO] cloning repository https://github.com/johnshiver/rust-monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnshiver/rust-monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Frust-monkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Frust-monkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c520529801332bae3d962db78a8983a78f39573d
[INFO] checking johnshiver/rust-monkey against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Frust-monkey" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnshiver/rust-monkey on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnshiver/rust-monkey
[INFO] finished tweaking git repo https://github.com/johnshiver/rust-monkey
[INFO] tweaked toml for git repo https://github.com/johnshiver/rust-monkey written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/johnshiver/rust-monkey already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24e179a4872709bce165fb1f506996dfbee4c905cbe7f911db1a48a7bf46d50c
[INFO] running `Command { std: "docker" "start" "-a" "24e179a4872709bce165fb1f506996dfbee4c905cbe7f911db1a48a7bf46d50c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24e179a4872709bce165fb1f506996dfbee4c905cbe7f911db1a48a7bf46d50c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e179a4872709bce165fb1f506996dfbee4c905cbe7f911db1a48a7bf46d50c", kill_on_drop: false }`
[INFO] [stdout] 24e179a4872709bce165fb1f506996dfbee4c905cbe7f911db1a48a7bf46d50c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbed3df429eb020b852d2ca044fa415ea2e50c6292272664bb52c6e07bcf3d62
[INFO] running `Command { std: "docker" "start" "-a" "bbed3df429eb020b852d2ca044fa415ea2e50c6292272664bb52c6e07bcf3d62", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `IfExpression`
[INFO] [stdout]  --> src/eval.rs:1:46
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::{BlockStatement, Expression, IfExpression, Node, Program, Statement};
[INFO] [stdout]   |                                              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Assign`, `If`, `Rparen`
[INFO] [stdout]  --> src/parser.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::token::Token::{Assign, Eof, If, Rparen};
[INFO] [stdout]   |                           ^^^^^^       ^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ident`
[INFO] [stdout]   --> src/parser.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::ast::Expression::{Ident, IfStatement};
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ast::Node`
[INFO] [stdout]  --> src/repl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::token::Token::Eof`
[INFO] [stdout]  --> src/repl.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::token::Token::Eof;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr::write_bytes`
[INFO] [stdout]  --> src/token.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ptr::write_bytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IfExpression`
[INFO] [stdout]  --> src/eval.rs:1:46
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::{BlockStatement, Expression, IfExpression, Node, Program, Statement};
[INFO] [stdout]   |                                              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ast::Node`
[INFO] [stdout]    --> src/eval.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 187 |     use crate::ast::Node;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]    --> src/eval.rs:192:9
[INFO] [stdout]     |
[INFO] [stdout] 192 |     use std::ops::Deref;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Assign`, `If`, `Rparen`
[INFO] [stdout]  --> src/parser.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::token::Token::{Assign, Eof, If, Rparen};
[INFO] [stdout]   |                           ^^^^^^       ^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ident`
[INFO] [stdout]   --> src/parser.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::ast::Expression::{Ident, IfStatement};
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ast::Node`
[INFO] [stdout]  --> src/repl.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::Node;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::token::Token::Eof`
[INFO] [stdout]  --> src/repl.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::token::Token::Eof;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr::write_bytes`
[INFO] [stdout]  --> src/token.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ptr::write_bytes;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/eval.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Object::Return(r) => return Ok(r),
[INFO] [stdout]    |                                            ^ expected struct `Rc`, found `&Rc<Object>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Object>`
[INFO] [stdout]            found reference `&Rc<Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/eval.rs:35:44
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Object::Return(r) => return Ok(r),
[INFO] [stdout]    |                                            ^ expected struct `Rc`, found `&Rc<Object>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Object>`
[INFO] [stdout]            found reference `&Rc<Object>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/eval.rs:48:23
[INFO] [stdout]    |
[INFO] [stdout] 48 |             return Ok(Object::Return(Rc::new(*value)));
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `Rc`, found enum `Object`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Object>`
[INFO] [stdout]                 found enum `Object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/eval.rs:48:23
[INFO] [stdout]    |
[INFO] [stdout] 48 |             return Ok(Object::Return(Rc::new(*value)));
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `Rc`, found enum `Object`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Rc<Object>`
[INFO] [stdout]                 found enum `Object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `monkey`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bbed3df429eb020b852d2ca044fa415ea2e50c6292272664bb52c6e07bcf3d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbed3df429eb020b852d2ca044fa415ea2e50c6292272664bb52c6e07bcf3d62", kill_on_drop: false }`
[INFO] [stdout] bbed3df429eb020b852d2ca044fa415ea2e50c6292272664bb52c6e07bcf3d62