[INFO] cloning repository https://github.com/akseven6221/RustMonkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akseven6221/RustMonkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakseven6221%2FRustMonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakseven6221%2FRustMonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d427e6dab012b768e85ad3ef9eb9e8461a6e388
[INFO] building akseven6221/RustMonkey against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakseven6221%2FRustMonkey" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akseven6221/RustMonkey on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/akseven6221/RustMonkey
[INFO] finished tweaking git repo https://github.com/akseven6221/RustMonkey
[INFO] tweaked toml for git repo https://github.com/akseven6221/RustMonkey written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/akseven6221/RustMonkey 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef8f859c00373a0492bf67fc2c22f4b373fbc55547c7fef29f5fa7c88539b34b
[INFO] running `Command { std: "docker" "start" "-a" "ef8f859c00373a0492bf67fc2c22f4b373fbc55547c7fef29f5fa7c88539b34b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef8f859c00373a0492bf67fc2c22f4b373fbc55547c7fef29f5fa7c88539b34b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef8f859c00373a0492bf67fc2c22f4b373fbc55547c7fef29f5fa7c88539b34b", kill_on_drop: false }`
[INFO] [stdout] ef8f859c00373a0492bf67fc2c22f4b373fbc55547c7fef29f5fa7c88539b34b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 868a35df426a46c099d73925cec924afce5a502d2b2e477b8dd8657e00426518
[INFO] running `Command { std: "docker" "start" "-a" "868a35df426a46c099d73925cec924afce5a502d2b2e477b8dd8657e00426518", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-quickstart v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/lexer/lexer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/repl/repl.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::lexer::lexer::{self, Lexer};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/repl/repl.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ast/expression.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::token::{token::Token, self};
[INFO] [stdout]   |                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ast/expression.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::{self, Formatter, Display};
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/repl/repl.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/ast/statement.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             _ => "",
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/ast/statement.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Statement::Let(let_statement) => &let_statement.token.literal,
[INFO] [stdout]    |             ----------------------------- matches some of the same values
[INFO] [stdout] 28 |             Statement::Return(return_statement) => &return_statement.Token.literal,
[INFO] [stdout]    |             ----------------------------------- matches some of the same values
[INFO] [stdout] 29 |             _ => "",
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `String` and `EmptyLine` are never constructed
[INFO] [stdout]   --> src/token/token.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 35 |     String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     EmptyLine,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `literal` is never read
[INFO] [stdout]    --> src/token/token.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct Token {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 102 |     pub token_type: TokenType,
[INFO] [stdout] 103 |     pub 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] warning: associated function `new` is never used
[INFO] [stdout]    --> src/token/token.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 134 | impl Token {
[INFO] [stdout]     | ---------- associated function in this implementation
[INFO] [stdout] 135 |     pub fn new(token_type: TokenType, literal: String) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROMPT` is never used
[INFO] [stdout]   --> src/repl/repl.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const PROMPT: &str = ">> ";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast/program.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Program {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn token_literal (&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Ident` is never constructed
[INFO] [stdout]  --> src/ast/expression.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum Expression {
[INFO] [stdout]   |          ---------- variant in this enum
[INFO] [stdout] 8 |     Ident(Identifier),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast/expression.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Expression {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 22 |     fn token_literal(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]   --> src/ast/expression.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Identifier {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 33 |     token: Token,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Identifier` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `identifier_node`, and `token_literal` are never used
[INFO] [stdout]   --> src/ast/expression.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Identifier {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 44 |     pub fn new (t: Token, v: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn identifier_node(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Let` and `Return` are never constructed
[INFO] [stdout]   --> src/ast/statement.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum Statement {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 11 |     Let(LetStatement),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 12 |     Return(Returnstatement)
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Statement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast/statement.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Statement {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 25 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]   --> src/ast/statement.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct LetStatement {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 41 |     token: Token,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LetStatement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `statement_node`, `new`, and `token_literal` are never used
[INFO] [stdout]   --> src/ast/statement.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl LetStatement {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 53 |     fn statement_node(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn new(token: Token, name: Identifier, exp: Expression) -> LetStatement {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `Token` is never read
[INFO] [stdout]   --> src/ast/statement.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct Returnstatement {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 68 |     pub Token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Returnstatement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `token_literal` are never used
[INFO] [stdout]   --> src/ast/statement.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl Returnstatement {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 80 |     pub fn new (t: Token) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/parser/parser.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Parser {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/parser/parser.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Parser {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 19 |     
[INFO] [stdout] 20 |     fn new(l: Lexer) -> Parser {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     fn next_token(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn parser_program(&mut self) -> Result<Program, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn parser_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn parser_let_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     fn parser_return_statement(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn cur_token_is(&self, token_type: TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86 |     fn peek_token_is(&self, token_type: TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn expect_peek(&mut self, token_type: TokenType) -> Result<(), ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `msg` is never read
[INFO] [stdout]  --> src/parser/error.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ParserError {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 5 |     pub msg: String,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParserError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/parser/error.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl ParserError {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new(msg: String) -> ParserError {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Token` should have a snake case name
[INFO] [stdout]   --> src/ast/statement.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub Token: Token,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `token`
[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 0.23s
[INFO] running `Command { std: "docker" "inspect" "868a35df426a46c099d73925cec924afce5a502d2b2e477b8dd8657e00426518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "868a35df426a46c099d73925cec924afce5a502d2b2e477b8dd8657e00426518", kill_on_drop: false }`
[INFO] [stdout] 868a35df426a46c099d73925cec924afce5a502d2b2e477b8dd8657e00426518
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38782a36dd9a80e34c4b3b130775e3dd948bdb8412932c5dafc5e84dc5f6ea8f
[INFO] running `Command { std: "docker" "start" "-a" "38782a36dd9a80e34c4b3b130775e3dd948bdb8412932c5dafc5e84dc5f6ea8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-quickstart v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/lexer/lexer.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/repl/repl.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::lexer::lexer::{self, Lexer};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/repl/repl.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ast/expression.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::token::{token::Token, self};
[INFO] [stdout]   |                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ast/expression.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt::{self, Formatter, Display};
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Program`, `self`, and `self`
[INFO] [stdout]    --> src/parser/parser.rs:109:71
[INFO] [stdout]     |
[INFO] [stdout] 109 | ...rser::{parser::Parser, error::{self, ParserError}}, ast::{statement::Statement, program::{self, Program}}};
[INFO] [stdout]     |                                   ^^^^                                                       ^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/repl/repl.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{self, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/ast/statement.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             _ => "",
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/ast/statement.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Statement::Let(let_statement) => &let_statement.token.literal,
[INFO] [stdout]    |             ----------------------------- matches some of the same values
[INFO] [stdout] 28 |             Statement::Return(return_statement) => &return_statement.Token.literal,
[INFO] [stdout]    |             ----------------------------------- matches some of the same values
[INFO] [stdout] 29 |             _ => "",
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `String` and `EmptyLine` are never constructed
[INFO] [stdout]   --> src/token/token.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub enum TokenType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 35 |     String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     EmptyLine,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROMPT` is never used
[INFO] [stdout]   --> src/repl/repl.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const PROMPT: &str = ">> ";
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast/program.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Program {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn token_literal (&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast/expression.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Expression {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] 22 |     fn token_literal(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `identifier_node` is never used
[INFO] [stdout]   --> src/ast/expression.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Identifier {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn identifier_node(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `token_literal` is never used
[INFO] [stdout]   --> src/ast/statement.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Statement {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 25 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `statement_node` is never used
[INFO] [stdout]   --> src/ast/statement.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl LetStatement {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 53 |     fn statement_node(&self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `msg` is never read
[INFO] [stdout]  --> src/parser/error.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ParserError {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] 5 |     pub msg: String,
[INFO] [stdout]   |         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ParserError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Token` should have a snake case name
[INFO] [stdout]   --> src/ast/statement.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub Token: Token,
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `token`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "38782a36dd9a80e34c4b3b130775e3dd948bdb8412932c5dafc5e84dc5f6ea8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38782a36dd9a80e34c4b3b130775e3dd948bdb8412932c5dafc5e84dc5f6ea8f", kill_on_drop: false }`
[INFO] [stdout] 38782a36dd9a80e34c4b3b130775e3dd948bdb8412932c5dafc5e84dc5f6ea8f