[INFO] cloning repository https://github.com/dust347/monkey_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dust347/monkey_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdust347%2Fmonkey_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdust347%2Fmonkey_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7777d6669cd4091edf32ecd8545a18b7b623c602
[INFO] checking dust347/monkey_rust against master#a5db378dc14a40dd1580c27fb8362156446382c3 for pr-136490
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdust347%2Fmonkey_rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dust347/monkey_rust on toolchain a5db378dc14a40dd1580c27fb8362156446382c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5db378dc14a40dd1580c27fb8362156446382c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dust347/monkey_rust
[INFO] finished tweaking git repo https://github.com/dust347/monkey_rust
[INFO] tweaked toml for git repo https://github.com/dust347/monkey_rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dust347/monkey_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" "+a5db378dc14a40dd1580c27fb8362156446382c3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a5db378dc14a40dd1580c27fb8362156446382c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02d692dd432cc5c26fdaacfe15f0d6dde8360312b4f32cd1cbe72901101646ed
[INFO] running `Command { std: "docker" "start" "-a" "02d692dd432cc5c26fdaacfe15f0d6dde8360312b4f32cd1cbe72901101646ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02d692dd432cc5c26fdaacfe15f0d6dde8360312b4f32cd1cbe72901101646ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02d692dd432cc5c26fdaacfe15f0d6dde8360312b4f32cd1cbe72901101646ed", kill_on_drop: false }`
[INFO] [stdout] 02d692dd432cc5c26fdaacfe15f0d6dde8360312b4f32cd1cbe72901101646ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a5db378dc14a40dd1580c27fb8362156446382c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c31445b3081a9fc45f8b1c71e2335c5b008d1ba4592a63b4ebfc1964587605a
[INFO] running `Command { std: "docker" "start" "-a" "5c31445b3081a9fc45f8b1c71e2335c5b008d1ba4592a63b4ebfc1964587605a", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/ast/mod.rs:432:9
[INFO] [stdout]     |
[INFO] [stdout] 432 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::token::TokenType`
[INFO] [stdout]    --> src/ast/mod.rs:433:9
[INFO] [stdout]     |
[INFO] [stdout] 433 |     use crate::token::TokenType;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `f64::NAN` and `fmt::format`
[INFO] [stdout]  --> src/parser/mod.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, f64::NAN, fmt::format};
[INFO] [stdout]   |                                 ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `prefix_parse_fn` should have an upper camel case name
[INFO] [stdout]  --> src/parser/mod.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type prefix_parse_fn = fn(&mut Parser) -> Option<Box<dyn Expression>>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `PrefixParseFn`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `infix_parse_fn` should have an upper camel case name
[INFO] [stdout]   --> src/parser/mod.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type infix_parse_fn = fn(&mut Parser, Option<Box<dyn Expression>>) -> Option<Box<dyn Expression>>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `InfixParseFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/parser/mod.rs:48:44
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<'a> Parser<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 48 |     pub fn new(l: &'a mut lexer::Lexer) -> Parser {
[INFO] [stdout]    |                                            ^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ast::Program` and `lexer::Lexer`
[INFO] [stdout]    --> src/parser/mod.rs:470:16
[INFO] [stdout]     |
[INFO] [stdout] 470 |     use self::{ast::Program, lexer::Lexer};
[INFO] [stdout]     |                ^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `new_fn` should have an upper camel case name
[INFO] [stdout]    --> src/parser/mod.rs:555:10
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type new_fn = fn(i32, i32) -> i32;
[INFO] [stdout]     |          ^^^^^^ help: convert the identifier to upper camel case: `NewFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Parser`
[INFO] [stdout]  --> src/repl/mod.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parser::{self, Parser};
[INFO] [stdout]   |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::TokenType`
[INFO] [stdout]  --> src/repl/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     token::TokenType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `f64::NAN` and `fmt::format`
[INFO] [stdout]  --> src/parser/mod.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashMap, f64::NAN, fmt::format};
[INFO] [stdout]   |                                 ^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `prefix_parse_fn` should have an upper camel case name
[INFO] [stdout]  --> src/parser/mod.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | type prefix_parse_fn = fn(&mut Parser) -> Option<Box<dyn Expression>>;
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `PrefixParseFn`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `infix_parse_fn` should have an upper camel case name
[INFO] [stdout]   --> src/parser/mod.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type infix_parse_fn = fn(&mut Parser, Option<Box<dyn Expression>>) -> Option<Box<dyn Expression>>;
[INFO] [stdout]    |      ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `InfixParseFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/parser/mod.rs:48:44
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<'a> Parser<'a> {
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] 48 |     pub fn new(l: &'a mut lexer::Lexer) -> Parser {
[INFO] [stdout]    |                                            ^^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Program`
[INFO] [stdout]    --> src/parser/mod.rs:470:16
[INFO] [stdout]     |
[INFO] [stdout] 470 |     use self::{ast::Program, lexer::Lexer};
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `new_fn` should have an upper camel case name
[INFO] [stdout]    --> src/parser/mod.rs:555:10
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type new_fn = fn(i32, i32) -> i32;
[INFO] [stdout]     |          ^^^^^^ help: convert the identifier to upper camel case: `NewFn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Parser`
[INFO] [stdout]  --> src/repl/mod.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::parser::{self, Parser};
[INFO] [stdout]   |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::TokenType`
[INFO] [stdout]  --> src/repl/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     token::TokenType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `statement_node` is never used
[INFO] [stdout]  --> src/ast/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Statement: Node {
[INFO] [stdout]   |           --------- method in this trait
[INFO] [stdout] 8 |     fn statement_node(&self);
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `expression_node` is never used
[INFO] [stdout]   --> src/ast/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Expression: Node {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 12 |     fn expression_node(&self);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> src/ast/mod.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 294 | pub struct Boolean {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 295 |     pub token: Token,
[INFO] [stdout] 296 |     pub value: bool,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_parse_errors` is never used
[INFO] [stdout]    --> src/parser/mod.rs:527:8
[INFO] [stdout]     |
[INFO] [stdout] 527 |     fn check_parse_errors(p: &Parser) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> src/parser/mod.rs:551:8
[INFO] [stdout]     |
[INFO] [stdout] 551 |     fn add(i: i32, j: i32) -> i32 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `new_fn` is never used
[INFO] [stdout]    --> src/parser/mod.rs:555:10
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type new_fn = fn(i32, i32) -> i32;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Expected` is never constructed
[INFO] [stdout]    --> src/parser/mod.rs:569:12
[INFO] [stdout]     |
[INFO] [stdout] 569 |     struct Expected<'a> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/parser/mod.rs:575:12
[INFO] [stdout]     |
[INFO] [stdout] 574 |     impl<'a> Expected<'a> {
[INFO] [stdout]     |     --------------------- associated function in this implementation
[INFO] [stdout] 575 |         fn new(input: &'a str, expected: &'a str) -> Expected<'a> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `leftExp` should have a snake case name
[INFO] [stdout]    --> src/parser/mod.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let mut leftExp = prefix(self);
[INFO] [stdout]     |                         ^^^^^^^ help: convert the identifier to snake case: `left_exp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser/mod.rs:484:13
[INFO] [stdout]     |
[INFO] [stdout] 484 |         let mut program = p.parse_program();
[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: method `statement_node` is never used
[INFO] [stdout]  --> src/ast/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait Statement: Node {
[INFO] [stdout]   |           --------- method in this trait
[INFO] [stdout] 8 |     fn statement_node(&self);
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `expression_node` is never used
[INFO] [stdout]   --> src/ast/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Expression: Node {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] 12 |     fn expression_node(&self);
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]    --> src/ast/mod.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 294 | pub struct Boolean {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 295 |     pub token: Token,
[INFO] [stdout] 296 |     pub value: bool,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `new_fn` is never used
[INFO] [stdout]    --> src/parser/mod.rs:555:10
[INFO] [stdout]     |
[INFO] [stdout] 555 |     type new_fn = fn(i32, i32) -> i32;
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `leftExp` should have a snake case name
[INFO] [stdout]    --> src/parser/mod.rs:166:25
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 let mut leftExp = prefix(self);
[INFO] [stdout]     |                         ^^^^^^^ help: convert the identifier to snake case: `left_exp`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "5c31445b3081a9fc45f8b1c71e2335c5b008d1ba4592a63b4ebfc1964587605a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c31445b3081a9fc45f8b1c71e2335c5b008d1ba4592a63b4ebfc1964587605a", kill_on_drop: false }`
[INFO] [stdout] 5c31445b3081a9fc45f8b1c71e2335c5b008d1ba4592a63b4ebfc1964587605a