[INFO] cloning repository https://github.com/knobby-tires/bfc.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/knobby-tires/bfc.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknobby-tires%2Fbfc.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknobby-tires%2Fbfc.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28d84dec53fcdd7ce0a3520ee5e1254ac73fe94c
[INFO] checking knobby-tires/bfc.rs/28d84dec53fcdd7ce0a3520ee5e1254ac73fe94c against master#01706e1a34c87656fcbfce198608f4cd2ac6461a for pr-135272
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknobby-tires%2Fbfc.rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/knobby-tires/bfc.rs on toolchain 01706e1a34c87656fcbfce198608f4cd2ac6461a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/knobby-tires/bfc.rs
[INFO] finished tweaking git repo https://github.com/knobby-tires/bfc.rs
[INFO] tweaked toml for git repo https://github.com/knobby-tires/bfc.rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/knobby-tires/bfc.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" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bedb1d254334c15a7b53e7d4a686836cfb4987a9050b04023e15c745c643336a
[INFO] running `Command { std: "docker" "start" "-a" "bedb1d254334c15a7b53e7d4a686836cfb4987a9050b04023e15c745c643336a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bedb1d254334c15a7b53e7d4a686836cfb4987a9050b04023e15c745c643336a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bedb1d254334c15a7b53e7d4a686836cfb4987a9050b04023e15c745c643336a", kill_on_drop: false }`
[INFO] [stdout] bedb1d254334c15a7b53e7d4a686836cfb4987a9050b04023e15c745c643336a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+01706e1a34c87656fcbfce198608f4cd2ac6461a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c711c5c1a5bcf278c96631d760fd03b27e68517b43d0ca5ae4124612e514cfd
[INFO] running `Command { std: "docker" "start" "-a" "4c711c5c1a5bcf278c96631d760fd03b27e68517b43d0ca5ae4124612e514cfd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]     Checking codemap v0.1.3
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]     Checking brainfuck_compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add` and `Sub` are never constructed
[INFO] [stdout]   --> src/parser.rs:17:4
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub enum AstNode {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 17 |    Add(usize),    // optimized multiple increments
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 18 |    Sub(usize),    // optimized multiple decrements
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstNode` 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 `start_time` is never read
[INFO] [stdout]   --> src/interpreter.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Interpreter {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     start_time: Option<Instant>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_instruction_breakpoint`, `set_memory_breakpoint`, and `set_loop_breakpoint` are never used
[INFO] [stdout]   --> src/interpreter.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Interpreter {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn set_instruction_breakpoint(&mut self, count: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn set_memory_breakpoint(&mut self, value: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn set_loop_breakpoint(&mut self, depth: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CodeGenerator` is never constructed
[INFO] [stdout]  --> src/codegen.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct CodeGenerator {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `generate`, and `generate_instruction` are never used
[INFO] [stdout]   --> src/codegen.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl CodeGenerator {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 8  |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub fn generate(&mut self, ast: &AstNode) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn generate_instruction(&mut self, instruction: &AstNode) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Optimizer` is never constructed
[INFO] [stdout]  --> src/optimizer.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Optimizer;
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `optimize`, and `optimize_instructions` are never used
[INFO] [stdout]   --> src/optimizer.rs:6:11
[INFO] [stdout]    |
[INFO] [stdout] 5  | impl Optimizer {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 6  |    pub fn new() -> Self {
[INFO] [stdout]    |           ^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |    pub fn optimize(&self, ast: &AstNode) -> AstNode {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |    fn optimize_instructions(&self, instructions: &[AstNode]) -> Vec<AstNode> {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start_time` is never read
[INFO] [stdout]   --> src/interpreter.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Interpreter {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 20 |     start_time: Option<Instant>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_instruction_breakpoint`, `set_memory_breakpoint`, and `set_loop_breakpoint` are never used
[INFO] [stdout]   --> src/interpreter.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Interpreter {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn set_instruction_breakpoint(&mut self, count: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn set_memory_breakpoint(&mut self, value: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn set_loop_breakpoint(&mut self, depth: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.17s
[INFO] running `Command { std: "docker" "inspect" "4c711c5c1a5bcf278c96631d760fd03b27e68517b43d0ca5ae4124612e514cfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c711c5c1a5bcf278c96631d760fd03b27e68517b43d0ca5ae4124612e514cfd", kill_on_drop: false }`
[INFO] [stdout] 4c711c5c1a5bcf278c96631d760fd03b27e68517b43d0ca5ae4124612e514cfd
