[INFO] cloning repository https://github.com/valtyr/bfcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/valtyr/bfcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaltyr%2Fbfcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaltyr%2Fbfcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 84bb8bdddfb71d215ebe19c850d0c51f349436a7
[INFO] checking valtyr/bfcc against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaltyr%2Fbfcc" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/valtyr/bfcc on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/valtyr/bfcc
[INFO] finished tweaking git repo https://github.com/valtyr/bfcc
[INFO] tweaked toml for git repo https://github.com/valtyr/bfcc written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/valtyr/bfcc 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zmq v0.9.2
[INFO] [stderr]   Downloaded ascii_tree v0.1.1
[INFO] [stderr]   Downloaded escape_string v0.1.1
[INFO] [stderr]   Downloaded pest_ascii_tree v0.1.0
[INFO] [stderr]   Downloaded metadeps v1.1.2
[INFO] [stderr]   Downloaded cmake v0.1.46
[INFO] [stderr]   Downloaded pretty_assertions v1.0.0
[INFO] [stderr]   Downloaded toml v0.2.1
[INFO] [stderr]   Downloaded zmq-sys v0.11.0
[INFO] [stderr]   Downloaded zeromq-src v0.1.10+4.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0cbe0a634394d22ed7e9fffaf2fedae638c784579d9ed074b5c569d23c9deb9
[INFO] running `Command { std: "docker" "start" "-a" "c0cbe0a634394d22ed7e9fffaf2fedae638c784579d9ed074b5c569d23c9deb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0cbe0a634394d22ed7e9fffaf2fedae638c784579d9ed074b5c569d23c9deb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0cbe0a634394d22ed7e9fffaf2fedae638c784579d9ed074b5c569d23c9deb9", kill_on_drop: false }`
[INFO] [stdout] c0cbe0a634394d22ed7e9fffaf2fedae638c784579d9ed074b5c569d23c9deb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2699baad586f1cf4f30b7e7847626bf734701ef169543846d3879ad081f17294
[INFO] running `Command { std: "docker" "start" "-a" "2699baad586f1cf4f30b7e7847626bf734701ef169543846d3879ad081f17294", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling cmake v0.1.46
[INFO] [stderr]    Compiling bumpalo v3.8.0
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling wasm-bindgen v0.2.78
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking escape_string v0.1.1
[INFO] [stderr]     Checking ascii_tree v0.1.1
[INFO] [stderr]    Compiling zeromq-src v0.1.10+4.3.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking pretty_assertions v1.0.0
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.78
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.78
[INFO] [stderr]     Checking pest_ascii_tree v0.1.0
[INFO] [stderr]     Checking serde v1.0.133
[INFO] [stderr]     Checking bfcc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mul_loop_optimization::mul_loop_optimization`
[INFO] [stdout]   --> src/transpiler/transforms/mod.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fuse_movements::fuse_movements, mul_loop_optimization::mul_loop_optimization,
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul_loop_optimization::mul_loop_optimization`
[INFO] [stdout]   --> src/transpiler/transforms/mod.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fuse_movements::fuse_movements, mul_loop_optimization::mul_loop_optimization,
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Interpreter` is never constructed
[INFO] [stdout]  --> src/interpreter/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Interpreter {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `on_start`, `on_instruction`, and `on_complete` are never used
[INFO] [stdout]   --> src/interpreter/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait InterpreterEvents {
[INFO] [stdout]    |           ----------------- methods in this trait
[INFO] [stdout] 11 |     fn on_start(&self) {}
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 12 |     fn on_instruction(&self, _instruction: &Node) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 13 |     fn on_complete(&self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `run`, `execute_instruction`, and `add_events_hook` are never used
[INFO] [stdout]   --> src/interpreter/mod.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Interpreter {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] 17 |     pub fn run(&mut self, ast: &Vec<Node>) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn execute_instruction(&mut self, node: &Node) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn add_events_hook<E: InterpreterEvents + 'static>(&mut self, hook: E) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new` is never used
[INFO] [stdout]   --> src/interpreter/mod.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn new() -> Interpreter {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_and_build_ast` is never used
[INFO] [stdout]   --> src/parser/mod.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn parse_and_build_ast(source: &str) -> Result<Vec<Node>, pest::error::Error<Rule>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpile` is never used
[INFO] [stdout]   --> src/transpiler/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn transpile(ast: Vec<Node>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `defer_movements` is never used
[INFO] [stdout]  --> src/transpiler/transforms/defer_movements.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn defer_movements(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fuse_add` is never used
[INFO] [stdout]  --> src/transpiler/transforms/fuse_add.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fuse_add(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fuse_movements` is never used
[INFO] [stdout]  --> src/transpiler/transforms/fuse_movements.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fuse_movements(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `optimize_children` is never used
[INFO] [stdout]  --> src/transpiler/transforms/mul_loop_optimization.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn optimize_children(children: &Vec<IRNode>) -> Option<Vec<IRNode>> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_loop_optimization` is never used
[INFO] [stdout]   --> src/transpiler/transforms/mul_loop_optimization.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn mul_loop_optimization(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unroll_zero_loops` is never used
[INFO] [stdout]  --> src/transpiler/transforms/unroll_zero_loops.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn unroll_zero_loops(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_source` is never used
[INFO] [stdout]  --> src/utils/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn read_source(path: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_file` is never used
[INFO] [stdout]   --> src/utils/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn write_file(path: String, contents: String) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_byte` is never used
[INFO] [stdout]   --> src/utils/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn read_byte() -> Option<u8> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `overflow_add` is never used
[INFO] [stdout]   --> src/utils/mod.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn overflow_add(lhs: u8, rhs: u8) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/utils/doubleagent.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl DoubleAgent {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new() -> DoubleAgent {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_events_hook` is never used
[INFO] [stdout]   --> src/interpreter/mod.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Interpreter {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn add_events_hook<E: InterpreterEvents + 'static>(&mut self, hook: E) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_and_build_ast` is never used
[INFO] [stdout]   --> src/parser/mod.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn parse_and_build_ast(source: &str) -> Result<Vec<Node>, pest::error::Error<Rule>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpile` is never used
[INFO] [stdout]   --> src/transpiler/mod.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn transpile(ast: Vec<Node>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fuse_add` is never used
[INFO] [stdout]  --> src/transpiler/transforms/fuse_add.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fuse_add(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fuse_movements` is never used
[INFO] [stdout]  --> src/transpiler/transforms/fuse_movements.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn fuse_movements(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_loop_optimization` is never used
[INFO] [stdout]   --> src/transpiler/transforms/mul_loop_optimization.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn mul_loop_optimization(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_source` is never used
[INFO] [stdout]  --> src/utils/mod.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn read_source(path: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_file` is never used
[INFO] [stdout]   --> src/utils/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn write_file(path: String, contents: String) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/utils/doubleagent.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl DoubleAgent {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 11 |     pub fn new() -> DoubleAgent {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul_loop_optimization::mul_loop_optimization`
[INFO] [stdout]   --> src/transpiler/transforms/mod.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fuse_movements::fuse_movements, mul_loop_optimization::mul_loop_optimization,
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mul_loop_optimization::mul_loop_optimization`
[INFO] [stdout]   --> src/transpiler/transforms/mod.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fuse_movements::fuse_movements, mul_loop_optimization::mul_loop_optimization,
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `optimize_children` is never used
[INFO] [stdout]  --> src/transpiler/transforms/mul_loop_optimization.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn optimize_children(children: &Vec<IRNode>) -> Option<Vec<IRNode>> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_loop_optimization` is never used
[INFO] [stdout]   --> src/transpiler/transforms/mul_loop_optimization.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn mul_loop_optimization(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_loop_optimization` is never used
[INFO] [stdout]   --> src/transpiler/transforms/mul_loop_optimization.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn mul_loop_optimization(branch: Vec<IRNode>) -> Vec<IRNode> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.95s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.78
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "2699baad586f1cf4f30b7e7847626bf734701ef169543846d3879ad081f17294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2699baad586f1cf4f30b7e7847626bf734701ef169543846d3879ad081f17294", kill_on_drop: false }`
[INFO] [stdout] 2699baad586f1cf4f30b7e7847626bf734701ef169543846d3879ad081f17294