[INFO] cloning repository https://github.com/JonasFovea/monkey-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JonasFovea/monkey-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonasFovea%2Fmonkey-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonasFovea%2Fmonkey-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1201226a510c8c54f44aa58c68321a7dbdf5694f
[INFO] checking JonasFovea/monkey-rs/1201226a510c8c54f44aa58c68321a7dbdf5694f against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonasFovea%2Fmonkey-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JonasFovea/monkey-rs on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JonasFovea/monkey-rs
[INFO] finished tweaking git repo https://github.com/JonasFovea/monkey-rs
[INFO] tweaked toml for git repo https://github.com/JonasFovea/monkey-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JonasFovea/monkey-rs 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 109a670fd0a67488f371bf8e2dc77aa48207905fe7eefc42c6f33eda2a6bb8aa
[INFO] running `Command { std: "docker" "start" "-a" "109a670fd0a67488f371bf8e2dc77aa48207905fe7eefc42c6f33eda2a6bb8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "109a670fd0a67488f371bf8e2dc77aa48207905fe7eefc42c6f33eda2a6bb8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "109a670fd0a67488f371bf8e2dc77aa48207905fe7eefc42c6f33eda2a6bb8aa", kill_on_drop: false }`
[INFO] [stdout] 109a670fd0a67488f371bf8e2dc77aa48207905fe7eefc42c6f33eda2a6bb8aa
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fc40a675a2708f9087b314925a31fe458ea70e57a120c70477ee89efd02c03a
[INFO] running `Command { std: "docker" "start" "-a" "2fc40a675a2708f9087b314925a31fe458ea70e57a120c70477ee89efd02c03a", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.98
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking whoami v1.5.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking monkey-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `anyhow::Context`
[INFO] [stdout]  --> src/code/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::Context;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Instructions`, `Opcode`, and `make`
[INFO] [stdout]  --> src/code/test.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::code::{make, Instructions, Opcode};
[INFO] [stdout]   |                   ^^^^  ^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `lookup`, `make`, and `read_operands`
[INFO] [stdout]  --> src/compiler/test.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::code::{lookup, make, read_operands, Instructions, Opcode};
[INFO] [stdout]   |                   ^^^^^^  ^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Scope`, `SymbolTable`, and `Symbol`
[INFO] [stdout]  --> src/compiler/test.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::compiler::symbol_table::{Scope, Symbol, SymbolTable};
[INFO] [stdout]   |                                     ^^^^^  ^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/compiler/test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/compiler/test.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Scope`, `SymbolTable`, and `Symbol`
[INFO] [stdout]  --> src/compiler/test_symbol_table.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::compiler::symbol_table::{Scope, Symbol, SymbolTable};
[INFO] [stdout]   |                                     ^^^^^  ^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/compiler/test_symbol_table.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/compiler/test_symbol_table.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/compiler/test_symbol_table.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_vec`, `join`, `to_string`, and `fmt_instruction` are never used
[INFO] [stdout]   --> src/code/mod.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Instructions {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn from_vec(vec: Vec<u8>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn join(instruction_sets: Vec<Instructions>) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn to_string(&self) -> Result<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub(crate) fn fmt_instruction(definition: &Definition, operands: &Vec<u16>) -> String {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]    --> src/code/mod.rs:323:5
[INFO] [stdout]     |
[INFO] [stdout] 322 | pub struct Definition {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 323 |     name: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Definition` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lookup` is never used
[INFO] [stdout]    --> src/code/mod.rs:327:8
[INFO] [stdout]     |
[INFO] [stdout] 327 | pub fn lookup(byte: u8) -> Result<Definition> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_operands` is never used
[INFO] [stdout]    --> src/code/mod.rs:357:8
[INFO] [stdout]     |
[INFO] [stdout] 357 | pub fn read_operands(definition: Definition, instructions: Instructions) -> (Vec<u16>, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CompilerTestCase` is never constructed
[INFO] [stdout]   --> src/compiler/test.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct CompilerTestCase {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_compiler_tests` is never used
[INFO] [stdout]    --> src/compiler/test.rs:994:4
[INFO] [stdout]     |
[INFO] [stdout] 994 | fn run_compiler_tests(tests: Vec<CompilerTestCase>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]     --> src/compiler/test.rs:1015:4
[INFO] [stdout]      |
[INFO] [stdout] 1015 | fn parse(input: &str) -> Program {
[INFO] [stdout]      |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_integer_object` is never used
[INFO] [stdout]     --> src/compiler/test.rs:1021:4
[INFO] [stdout]      |
[INFO] [stdout] 1021 | fn test_integer_object(expected: i64, actual: &Object) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_string_object` is never used
[INFO] [stdout]     --> src/compiler/test.rs:1028:4
[INFO] [stdout]      |
[INFO] [stdout] 1028 | fn test_string_object(expected: &str, actual: &Object) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_instructions` is never used
[INFO] [stdout]     --> src/compiler/test.rs:1035:4
[INFO] [stdout]      |
[INFO] [stdout] 1035 | fn test_instructions(expected: Vec<Instructions>, actual: Instructions, test_case: usize) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_constants` is never used
[INFO] [stdout]     --> src/compiler/test.rs:1048:4
[INFO] [stdout]      |
[INFO] [stdout] 1048 | fn test_constants(expected: Vec<Object>, actual: Vec<Object>, test_case: usize) {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/vm/test.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn parse(input: &str) -> Program {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_integer_object` is never used
[INFO] [stdout]   --> src/vm/test.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn test_integer_object(expected: i64, actual: &Object, test_no: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_boolean_object` is never used
[INFO] [stdout]   --> src/vm/test.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn test_boolean_object(expected: bool, actual: &Object, test_no: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_string_object` is never used
[INFO] [stdout]   --> src/vm/test.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn test_string_object(expected: &str, actual: &Object, test_no: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_array_object` is never used
[INFO] [stdout]   --> src/vm/test.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn test_array_object(objects: &[Object], actual: &Object, test_no: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_hash_object` is never used
[INFO] [stdout]   --> src/vm/test.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn test_hash_object(expected: &HashMap<HashKey, Object>, actual: &Object, test_no: usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExpectError` is never used
[INFO] [stdout]   --> src/vm/test.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 58 | enum ExpectError {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VMTestCase` is never constructed
[INFO] [stdout]   --> src/vm/test.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct VMTestCase {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_int_result_case`, `new_bool_result_case`, `new_string_result_case`, `new_array_result_case`, `new_null_result_case`, and `new_expected_error` are never used
[INFO] [stdout]    --> src/vm/test.rs:71:19
[INFO] [stdout]     |
[INFO] [stdout] 70  | impl VMTestCase {
[INFO] [stdout]     | --------------- associated functions in this implementation
[INFO] [stdout] 71  |     pub(crate) fn new_int_result_case(input: &str, expected_int: i64) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78  |     pub(crate) fn new_bool_result_case(input: &str, expected_bool: bool) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 86  |     pub(crate) fn new_string_result_case(input: &str, expected_string: &str) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94  |     pub(crate) fn new_array_result_case(input: &str, expected_array: Vec<Object>) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub(crate) fn new_null_result_case(input: &str) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     pub(crate) fn new_expected_error(input: &str, err_msg: &str) -> Self {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_vm_tests` is never used
[INFO] [stdout]    --> src/vm/test.rs:118:4
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn run_vm_tests(tests: Vec<VMTestCase>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_expected_object` is never used
[INFO] [stdout]    --> src/vm/test.rs:161:4
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn test_expected_object(expected: &Object, actual: &Object, test_no: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.95s
[INFO] running `Command { std: "docker" "inspect" "2fc40a675a2708f9087b314925a31fe458ea70e57a120c70477ee89efd02c03a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc40a675a2708f9087b314925a31fe458ea70e57a120c70477ee89efd02c03a", kill_on_drop: false }`
[INFO] [stdout] 2fc40a675a2708f9087b314925a31fe458ea70e57a120c70477ee89efd02c03a