[INFO] cloning repository https://github.com/rodrigobaraglia/monkeylang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rodrigobaraglia/monkeylang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Fmonkeylang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Fmonkeylang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ff6916f9dd1e3a5227f63417f0418ec96ce1b95
[INFO] testing rodrigobaraglia/monkeylang against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Fmonkeylang" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rodrigobaraglia/monkeylang
[INFO] finished tweaking git repo https://github.com/rodrigobaraglia/monkeylang
[INFO] tweaked toml for git repo https://github.com/rodrigobaraglia/monkeylang written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rodrigobaraglia/monkeylang on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rodrigobaraglia/monkeylang 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d7a1440e4343516ef7d8a02cfe1c5582f78afd3476c416b0b0e12f9be35bfa3
[INFO] running `Command { std: "docker" "start" "-a" "0d7a1440e4343516ef7d8a02cfe1c5582f78afd3476c416b0b0e12f9be35bfa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d7a1440e4343516ef7d8a02cfe1c5582f78afd3476c416b0b0e12f9be35bfa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d7a1440e4343516ef7d8a02cfe1c5582f78afd3476c416b0b0e12f9be35bfa3", kill_on_drop: false }`
[INFO] [stdout] 0d7a1440e4343516ef7d8a02cfe1c5582f78afd3476c416b0b0e12f9be35bfa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe314db3286ae9ac6437b524708525e2b5b2abb7d3e261100b976f1401ebb35e
[INFO] running `Command { std: "docker" "start" "-a" "fe314db3286ae9ac6437b524708525e2b5b2abb7d3e261100b976f1401ebb35e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_trait_impl)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]  --> src/utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lazy_static::lazy_static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/utils.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `hash`
[INFO] [stdout]  --> src/utils.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | macro_rules! hash {
[INFO] [stdout]   |              ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `static_hash`
[INFO] [stdout]   --> src/utils.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 | macro_rules! static_hash {
[INFO] [stdout]    |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `INTEGER_LITERAL` should have an upper camel case name
[INFO] [stdout]   --> src/ast.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     INTEGER_LITERAL(i64),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IntegerLiteral`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BIN_OP` should have an upper camel case name
[INFO] [stdout]   --> src/ast.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     BIN_OP(Rc<BinaryOp<'a>>),
[INFO] [stdout]    |     ^^^^^^ help: convert the identifier to upper camel case: `BinOp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UN_OP` should have an upper camel case name
[INFO] [stdout]   --> src/ast.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     UN_OP(Rc<UnaryOp<'a>>),
[INFO] [stdout]    |     ^^^^^ help: convert the identifier to upper camel case: `UnOp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ast::*`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::*`
[INFO] [stdout]  --> src/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::IntoIter`
[INFO] [stdout]  --> src/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::vec::IntoIter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust` (bin "rust") due to 1 previous error; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fe314db3286ae9ac6437b524708525e2b5b2abb7d3e261100b976f1401ebb35e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe314db3286ae9ac6437b524708525e2b5b2abb7d3e261100b976f1401ebb35e", kill_on_drop: false }`
[INFO] [stdout] fe314db3286ae9ac6437b524708525e2b5b2abb7d3e261100b976f1401ebb35e