[INFO] cloning repository https://github.com/JoshMcguigan/monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoshMcguigan/monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshMcguigan%2Fmonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshMcguigan%2Fmonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6615e9295df17109f3eb9e7cff436cbdcf14d6ac
[INFO] checking JoshMcguigan/monkey against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshMcguigan%2Fmonkey" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JoshMcguigan/monkey
[INFO] finished tweaking git repo https://github.com/JoshMcguigan/monkey
[INFO] tweaked toml for git repo https://github.com/JoshMcguigan/monkey written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JoshMcguigan/monkey on toolchain 4e55a504843955c97eb06907c71f6f3e99208021
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JoshMcguigan/monkey 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" "+4e55a504843955c97eb06907c71f6f3e99208021" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking JoshMcguigan/monkey against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshMcguigan%2Fmonkey" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JoshMcguigan/monkey
[INFO] finished tweaking git repo https://github.com/JoshMcguigan/monkey
[INFO] tweaked toml for git repo https://github.com/JoshMcguigan/monkey written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JoshMcguigan/monkey on toolchain 4e55a504843955c97eb06907c71f6f3e99208021
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JoshMcguigan/monkey 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" "+4e55a504843955c97eb06907c71f6f3e99208021" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_users v0.3.4
[INFO] [stderr]   Downloaded dirs v2.0.2
[INFO] [stderr]   Downloaded beef v0.4.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.10
[INFO] [stderr]   Downloaded unicode-segmentation v1.2.1
[INFO] [stderr]   Downloaded nix v0.17.0
[INFO] [stderr]   Downloaded rustyline v6.1.0
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded utf8-ranges v1.0.4
[INFO] [stderr]   Downloaded logos-derive v0.11.0-rc5
[INFO] [stderr]   Downloaded logos v0.11.0-rc5
[INFO] [stderr]   Downloaded redox_syscall v0.1.44
[INFO] [stderr]   Downloaded blake2b_simd v0.5.10
[INFO] [stderr]   Downloaded rust-argon2 v0.7.0
[INFO] [stderr]   Downloaded dirs-sys v0.3.4
[INFO] [stderr]   Downloaded cc v1.0.26
[INFO] [stderr]   Downloaded memchr v2.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a3bad07497310281f8f47ce9bc04242e58babfd8d4bb167b7052024680ee74f
[INFO] running `Command { std: "docker" "start" "-a" "0a3bad07497310281f8f47ce9bc04242e58babfd8d4bb167b7052024680ee74f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a3bad07497310281f8f47ce9bc04242e58babfd8d4bb167b7052024680ee74f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a3bad07497310281f8f47ce9bc04242e58babfd8d4bb167b7052024680ee74f", kill_on_drop: false }`
[INFO] [stdout] 0a3bad07497310281f8f47ce9bc04242e58babfd8d4bb167b7052024680ee74f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f5b66155dc55b621babc6d73a0e1c7503253e49ee4b067b86615694d419d8ee
[INFO] running `Command { std: "docker" "start" "-a" "4f5b66155dc55b621babc6d73a0e1c7503253e49ee4b067b86615694d419d8ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling beef v0.4.2
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]     Checking unicode-segmentation v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rustyline v6.1.0
[INFO] [stderr]    Compiling logos-derive v0.11.0-rc5
[INFO] [stderr]     Checking logos v0.11.0-rc5
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `OpCode` is never used
[INFO] [stdout]  --> src/code/mod.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum OpCode {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_u16_to_two_u8s_be` is never used
[INFO] [stdout]   --> src/code/mod.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn convert_u16_to_two_u8s_be(integer: u16) -> [u8; 2] {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_two_u8s_be_to_usize` is never used
[INFO] [stdout]   --> src/code/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn convert_two_u8s_be_to_usize(int1: u8, int2: u8) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_three_byte_op` is never used
[INFO] [stdout]   --> src/code/mod.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn make_three_byte_op(code: u8, data: u16) -> Vec<u8> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_op` is never used
[INFO] [stdout]   --> src/code/mod.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn make_op(op: OpCode) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ByteCode` is never constructed
[INFO] [stdout]   --> src/compiler/mod.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ByteCode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/compiler/mod.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ByteCode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 18 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Compiler` is never constructed
[INFO] [stdout]   --> src/compiler/mod.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Compiler {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/compiler/mod.rs:32:8
[INFO] [stdout]     |
[INFO] [stdout]  31 | impl Compiler {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout]  32 |     fn compile_from_source(input: &str) -> ByteCode {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  45 |     fn add_constant(&mut self, obj: Object) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |     fn add_instruction(&mut self, op_code: OpCode) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |     fn change_op(&mut self, position: usize, op_code: OpCode) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  63 |     fn compile_expression(&mut self, expr: Expr) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 149 |     fn last_instruction_is_pop(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     fn remove_last_pop(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn compile_statements(&mut self, ast: Vec<Statement>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `compile_from_source` is never used
[INFO] [stdout]    --> src/compiler/mod.rs:178:8
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub fn compile_from_source(input: &str) -> ByteCode {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SymbolName` is never used
[INFO] [stdout]  --> src/compiler/symbol_table.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type SymbolName = String;
[INFO] [stdout]   |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `SymbolIndex` is never used
[INFO] [stdout]  --> src/compiler/symbol_table.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type SymbolIndex = u16;
[INFO] [stdout]   |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SymbolTable` is never constructed
[INFO] [stdout]  --> src/compiler/symbol_table.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct SymbolTable {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `define`, and `resolve` are never used
[INFO] [stdout]   --> src/compiler/symbol_table.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl SymbolTable {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn define(&mut self, name: SymbolName) -> SymbolIndex {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn resolve(&self, name: &SymbolName) -> Option<SymbolIndex> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STACK_SIZE` is never used
[INFO] [stdout]  --> src/vm/mod.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const STACK_SIZE : usize = 2048;
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GLOBAL_SIZE` is never used
[INFO] [stdout]  --> src/vm/mod.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const GLOBAL_SIZE : usize = 2048;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VM` is never constructed
[INFO] [stdout]   --> src/vm/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct VM {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `run`, `push`, `pop`, and `last_popped` are never used
[INFO] [stdout]    --> src/vm/mod.rs:20:8
[INFO] [stdout]     |
[INFO] [stdout]  19 | impl VM {
[INFO] [stdout]     | ------- associated items in this implementation
[INFO] [stdout]  20 |     fn new(byte_code: ByteCode) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  33 |     fn run(&mut self) {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 164 |     fn push(&mut self, obj: Object) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 169 |     fn pop(&mut self) -> Object {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 178 |     fn last_popped(&self) -> &Object {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.82s
[INFO] running `Command { std: "docker" "inspect" "4f5b66155dc55b621babc6d73a0e1c7503253e49ee4b067b86615694d419d8ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f5b66155dc55b621babc6d73a0e1c7503253e49ee4b067b86615694d419d8ee", kill_on_drop: false }`
[INFO] [stdout] 4f5b66155dc55b621babc6d73a0e1c7503253e49ee4b067b86615694d419d8ee
