[INFO] cloning repository https://github.com/phamtrongthang123/VNLang-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phamtrongthang123/VNLang-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphamtrongthang123%2FVNLang-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphamtrongthang123%2FVNLang-rust'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/phamtrongthang123/VNLang-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phamtrongthang123/VNLang-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphamtrongthang123%2FVNLang-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphamtrongthang123%2FVNLang-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffcd62063e9e2b926952430f9766b3454f9e237a
[INFO] checking phamtrongthang123/VNLang-rust against master#f21fbac535ab2c3bc50db20547f4d48477357103 for pr-143193
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphamtrongthang123%2FVNLang-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/phamtrongthang123/VNLang-rust
[INFO] finished tweaking git repo https://github.com/phamtrongthang123/VNLang-rust
[INFO] tweaked toml for git repo https://github.com/phamtrongthang123/VNLang-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/phamtrongthang123/VNLang-rust on toolchain f21fbac535ab2c3bc50db20547f4d48477357103
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/phamtrongthang123/VNLang-rust 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" "+f21fbac535ab2c3bc50db20547f4d48477357103" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-iterator-derive v0.3.1
[INFO] [stderr]   Downloaded enum-iterator v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f16c0bfc7c149523ba66d25b336c936ad50462175a880699ccecf794ff0345c
[INFO] running `Command { std: "docker" "start" "-a" "0f16c0bfc7c149523ba66d25b336c936ad50462175a880699ccecf794ff0345c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f16c0bfc7c149523ba66d25b336c936ad50462175a880699ccecf794ff0345c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f16c0bfc7c149523ba66d25b336c936ad50462175a880699ccecf794ff0345c", kill_on_drop: false }`
[INFO] [stdout] 0f16c0bfc7c149523ba66d25b336c936ad50462175a880699ccecf794ff0345c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f21fbac535ab2c3bc50db20547f4d48477357103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72e922ffc9617ded1441d9f94aad89c658404f862130d91ca5d00935a238b551
[INFO] running `Command { std: "docker" "start" "-a" "72e922ffc9617ded1441d9f94aad89c658404f862130d91ca5d00935a238b551", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling enum-iterator-derive v0.3.1
[INFO] [stderr]     Checking enum-iterator v0.3.1
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::parser`
[INFO] [stdout]   --> src/evaluator.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::parser;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/code.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parser::parse`
[INFO] [stdout]  --> src/compiler.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parser::parse;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]   --> src/compiler.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::borrow::Borrow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::compiler::Compiler`
[INFO] [stdout]  --> src/vm.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::compiler::Compiler;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parser::parse`
[INFO] [stdout]  --> src/vm.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parser::parse;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Cursor`
[INFO] [stdout]  --> src/code.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Cursor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/compiler.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ReadBytesExt`
[INFO] [stdout]  --> src/code.rs:3:60
[INFO] [stdout]   |
[INFO] [stdout] 3 | use self::byteorder::{ByteOrder, BigEndian, WriteBytesExt, ReadBytesExt};
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `InstructionsFns`
[INFO] [stdout]  --> src/compiler.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::code::{Instructions, InstructionsFns, Op, make_instruction};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ReadBytesExt`
[INFO] [stdout]  --> src/vm.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::byteorder::{ByteOrder, BigEndian, ReadBytesExt};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler.rs:414:13
[INFO] [stdout]     |
[INFO] [stdout] 414 |             _ => panic!("not implemented {:?}", exp)
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler.rs:414:13
[INFO] [stdout]     |
[INFO] [stdout] 273 |             ast::Expression::Integer(int) => {
[INFO] [stdout]     |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 278 |             ast::Expression::Boolean(b) => {
[INFO] [stdout]     |             --------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 285 |             ast::Expression::String(s) => {
[INFO] [stdout]     |             -------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 289 |             ast::Expression::Infix(exp) => {
[INFO] [stdout]     |             --------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 414 |             _ => panic!("not implemented {:?}", exp)
[INFO] [stdout]     |             ^ ...and 8 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 _ => panic!("unsupported op {:?}", op),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |                 Op::Constant => {
[INFO] [stdout]     |                 ------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 147 |                 Op::Add | Op::Sub | Op::Mul | Op::Div => self.execute_binary_operation(op),
[INFO] [stdout]     |                 ------------------------------------- matches some of the same values
[INFO] [stdout] 148 |                 Op::GreaterThan | Op::Equal | Op::NotEqual => self.execute_comparison(op),
[INFO] [stdout]     |                 ------------------------------------------ matches some of the same values
[INFO] [stdout] 149 |                 Op::Pop => {
[INFO] [stdout]     |                 ------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 254 |                 _ => panic!("unsupported op {:?}", op),
[INFO] [stdout]     |                 ^ ...and 20 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ip` is never read
[INFO] [stdout]    --> src/vm.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let mut ip = 0;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IntegerLiteral` is never constructed
[INFO] [stdout]    --> src/ast.rs:211:12
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub struct IntegerLiteral {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_pop` is never used
[INFO] [stdout]   --> src/compiler.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl EmittedInstruction {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 26 |     fn is_pop(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lexer.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(input: &'a str) -> Lexer<'_> {
[INFO] [stdout]    |                        ^^               -- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     pub fn new(input: &'a str) -> Lexer<'_> {
[INFO] [stdout] 11 +     pub fn new(input: &'a str) -> Lexer<'a> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/compiler.rs:181:20
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn compile(&mut self, node: ast::Node) -> Result {
[INFO] [stdout]     |                    ^^^^^^^^^                      ------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn compile(&mut self, node: ast::Node) -> Result<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/compiler.rs:195:21
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn bytecode(&self) -> Bytecode {
[INFO] [stdout]     |                     ^^^^^     -------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn bytecode(&self) -> Bytecode<'_> {
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:245:17
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 self.compile_expression(&ret.value);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 let _ = self.compile_expression(&ret.value);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:291:21
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     self.compile_expression(&exp.right);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let _ = self.compile_expression(&exp.right);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:292:21
[INFO] [stdout]     |
[INFO] [stdout] 292 |                     self.compile_expression(&exp.left);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 292 |                     let _ = self.compile_expression(&exp.left);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:297:17
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 self.compile_expression(&exp.left);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 let _ = self.compile_expression(&exp.left);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 self.compile_expression(&exp.right);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 let _ = self.compile_expression(&exp.right);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:312:17
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 self.compile_expression(&exp.right);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let _ = self.compile_expression(&exp.right);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:321:17
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 self.compile_expression(&ifexp.condition);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 let _ = self.compile_expression(&ifexp.condition);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:325:17
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 self.compile_block_statement(&ifexp.consequence);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 let _ = self.compile_block_statement(&ifexp.consequence);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:384:17
[INFO] [stdout]     |
[INFO] [stdout] 384 |                 self.compile_block_statement(&func.body);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 384 |                 let _ = self.compile_block_statement(&func.body);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:406:17
[INFO] [stdout]     |
[INFO] [stdout] 406 |                 self.compile_expression(&exp.function);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 406 |                 let _ = self.compile_expression(&exp.function);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:409:21
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     self.compile_expression(arg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     let _ = self.compile_expression(arg);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ReadBytesExt`
[INFO] [stdout]  --> src/vm.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use self::byteorder::{ByteOrder, BigEndian, ReadBytesExt};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ReadBytesExt`
[INFO] [stdout]  --> src/code.rs:3:60
[INFO] [stdout]   |
[INFO] [stdout] 3 | use self::byteorder::{ByteOrder, BigEndian, WriteBytesExt, ReadBytesExt};
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let mut env = Rc::new(RefCell::new(Environment::new()));
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:65:17
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let mut env = Rc::new(RefCell::new(Environment::new()));
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler.rs:414:13
[INFO] [stdout]     |
[INFO] [stdout] 414 |             _ => panic!("not implemented {:?}", exp)
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler.rs:414:13
[INFO] [stdout]     |
[INFO] [stdout] 273 |             ast::Expression::Integer(int) => {
[INFO] [stdout]     |             ----------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 278 |             ast::Expression::Boolean(b) => {
[INFO] [stdout]     |             --------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 285 |             ast::Expression::String(s) => {
[INFO] [stdout]     |             -------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 289 |             ast::Expression::Infix(exp) => {
[INFO] [stdout]     |             --------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 414 |             _ => panic!("not implemented {:?}", exp)
[INFO] [stdout]     |             ^ ...and 8 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/vm.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 _ => panic!("unsupported op {:?}", op),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/vm.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |                 Op::Constant => {
[INFO] [stdout]     |                 ------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 147 |                 Op::Add | Op::Sub | Op::Mul | Op::Div => self.execute_binary_operation(op),
[INFO] [stdout]     |                 ------------------------------------- matches some of the same values
[INFO] [stdout] 148 |                 Op::GreaterThan | Op::Equal | Op::NotEqual => self.execute_comparison(op),
[INFO] [stdout]     |                 ------------------------------------------ matches some of the same values
[INFO] [stdout] 149 |                 Op::Pop => {
[INFO] [stdout]     |                 ------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 254 |                 _ => panic!("unsupported op {:?}", op),
[INFO] [stdout]     |                 ^ ...and 20 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ip` is never read
[INFO] [stdout]    --> src/vm.rs:132:17
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let mut ip = 0;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IntegerLiteral` is never constructed
[INFO] [stdout]    --> src/ast.rs:211:12
[INFO] [stdout]     |
[INFO] [stdout] 211 | pub struct IntegerLiteral {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_pop` is never used
[INFO] [stdout]   --> src/compiler.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl EmittedInstruction {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 26 |     fn is_pop(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lexer.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(input: &'a str) -> Lexer<'_> {
[INFO] [stdout]    |                        ^^               -- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     pub fn new(input: &'a str) -> Lexer<'_> {
[INFO] [stdout] 11 +     pub fn new(input: &'a str) -> Lexer<'a> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/evaluator.rs:560:27
[INFO] [stdout]     |
[INFO] [stdout] 560 |             obj => panic!(format!("expected string but got {:?}", obj))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 560 -             obj => panic!(format!("expected string but got {:?}", obj))
[INFO] [stdout] 560 +             obj => panic!("expected string but got {:?}", obj)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/evaluator.rs:571:27
[INFO] [stdout]     |
[INFO] [stdout] 571 |             obj => panic!(format!("expected string but got {:?}", obj))
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 571 -             obj => panic!(format!("expected string but got {:?}", obj))
[INFO] [stdout] 571 +             obj => panic!("expected string but got {:?}", obj)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/compiler.rs:181:20
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn compile(&mut self, node: ast::Node) -> Result {
[INFO] [stdout]     |                    ^^^^^^^^^                      ------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn compile(&mut self, node: ast::Node) -> Result<'_> {
[INFO] [stdout]     |                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/compiler.rs:195:21
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn bytecode(&self) -> Bytecode {
[INFO] [stdout]     |                     ^^^^^     -------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn bytecode(&self) -> Bytecode<'_> {
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:245:17
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 self.compile_expression(&ret.value);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 let _ = self.compile_expression(&ret.value);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:291:21
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     self.compile_expression(&exp.right);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 291 |                     let _ = self.compile_expression(&exp.right);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:292:21
[INFO] [stdout]     |
[INFO] [stdout] 292 |                     self.compile_expression(&exp.left);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 292 |                     let _ = self.compile_expression(&exp.left);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:297:17
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 self.compile_expression(&exp.left);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 let _ = self.compile_expression(&exp.left);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:298:17
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 self.compile_expression(&exp.right);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 298 |                 let _ = self.compile_expression(&exp.right);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:312:17
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 self.compile_expression(&exp.right);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 let _ = self.compile_expression(&exp.right);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:321:17
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 self.compile_expression(&ifexp.condition);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 let _ = self.compile_expression(&ifexp.condition);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:325:17
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 self.compile_block_statement(&ifexp.consequence);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 let _ = self.compile_block_statement(&ifexp.consequence);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:384:17
[INFO] [stdout]     |
[INFO] [stdout] 384 |                 self.compile_block_statement(&func.body);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 384 |                 let _ = self.compile_block_statement(&func.body);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:406:17
[INFO] [stdout]     |
[INFO] [stdout] 406 |                 self.compile_expression(&exp.function);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 406 |                 let _ = self.compile_expression(&exp.function);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:409:21
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     self.compile_expression(arg);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     let _ = self.compile_expression(arg);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]     --> src/compiler.rs:1589:69
[INFO] [stdout]      |
[INFO] [stdout] 1589 |             test_constants(&t.expected_constants, bytecode.constants.borrow()).unwrap_or_else(
[INFO] [stdout]      |                                                                     ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: the type `Vec<std::rc::Rc<object::Object>>` does not implement `Borrow`, so calling `borrow` on `&Vec<std::rc::Rc<object::Object>>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]      = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]      |
[INFO] [stdout] 1589 -             test_constants(&t.expected_constants, bytecode.constants.borrow()).unwrap_or_else(
[INFO] [stdout] 1589 +             test_constants(&t.expected_constants, bytecode.constants).unwrap_or_else(
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.84s
[INFO] running `Command { std: "docker" "inspect" "72e922ffc9617ded1441d9f94aad89c658404f862130d91ca5d00935a238b551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72e922ffc9617ded1441d9f94aad89c658404f862130d91ca5d00935a238b551", kill_on_drop: false }`
[INFO] [stdout] 72e922ffc9617ded1441d9f94aad89c658404f862130d91ca5d00935a238b551