[INFO] cloning repository https://github.com/jakeec/compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jakeec/compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakeec%2Fcompiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakeec%2Fcompiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23f1f872e93cc6cbc4a91550a5cc0a68ac3717f1
[INFO] checking jakeec/compiler against try#e117153a45c546e883c1f91d82611775fcaeffe0 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakeec%2Fcompiler" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jakeec/compiler
[INFO] finished tweaking git repo https://github.com/jakeec/compiler
[INFO] tweaked toml for git repo https://github.com/jakeec/compiler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jakeec/compiler on toolchain e117153a45c546e883c1f91d82611775fcaeffe0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jakeec/compiler 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" "+e117153a45c546e883c1f91d82611775fcaeffe0" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking jakeec/compiler against try#e117153a45c546e883c1f91d82611775fcaeffe0 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjakeec%2Fcompiler" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jakeec/compiler
[INFO] finished tweaking git repo https://github.com/jakeec/compiler
[INFO] tweaked toml for git repo https://github.com/jakeec/compiler written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jakeec/compiler on toolchain e117153a45c546e883c1f91d82611775fcaeffe0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jakeec/compiler 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" "+e117153a45c546e883c1f91d82611775fcaeffe0" "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 memchr v2.3.2
[INFO] [stderr]   Downloaded aho-corasick v0.7.8
[INFO] [stderr]   Downloaded regex-syntax v0.6.14
[INFO] [stderr]   Downloaded regex v1.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e1b0a407bd7e8edd923cfda9e8ca73519a9d893a9b3d31ca542ce675231ac38
[INFO] running `Command { std: "docker" "start" "-a" "2e1b0a407bd7e8edd923cfda9e8ca73519a9d893a9b3d31ca542ce675231ac38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e1b0a407bd7e8edd923cfda9e8ca73519a9d893a9b3d31ca542ce675231ac38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1b0a407bd7e8edd923cfda9e8ca73519a9d893a9b3d31ca542ce675231ac38", kill_on_drop: false }`
[INFO] [stdout] 2e1b0a407bd7e8edd923cfda9e8ca73519a9d893a9b3d31ca542ce675231ac38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+e117153a45c546e883c1f91d82611775fcaeffe0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 737f09ee793acdd7eb6de5265bd4fd550d0e4ccf96bed983692638e6c0a20edd
[INFO] running `Command { std: "docker" "start" "-a" "737f09ee793acdd7eb6de5265bd4fd550d0e4ccf96bed983692638e6c0a20edd", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TestReader`
[INFO] [stdout]  --> src/compiler.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::reader::{Reader, TestReader};
[INFO] [stdout]   |                             ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TestWriter`
[INFO] [stdout]  --> src/compiler.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::writer::{TestWriter, Writer};
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/compiler.rs:287:12
[INFO] [stdout]     |
[INFO] [stdout] 287 |         if (self.get_name() == String::from("else")) {
[INFO] [stdout]     |            ^                                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 287 -         if (self.get_name() == String::from("else")) {
[INFO] [stdout] 287 +         if self.get_name() == String::from("else")  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]    --> src/assembly_interpreter.rs:421:9
[INFO] [stdout]     |
[INFO] [stdout] 421 |     use std::fs;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TestReader`
[INFO] [stdout]  --> src/compiler.rs:1:29
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::reader::{Reader, TestReader};
[INFO] [stdout]   |                             ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StdinReader`
[INFO] [stdout]  --> src/main.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use reader::{FileReader, Reader, ReaderArg, StdinReader};
[INFO] [stdout]   |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TestWriter`
[INFO] [stdout]  --> src/compiler.rs:2:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::writer::{TestWriter, Writer};
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Writer`
[INFO] [stdout]  --> src/main.rs:8:28
[INFO] [stdout]   |
[INFO] [stdout] 8 | use writer::{StdoutWriter, Writer};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/compiler.rs:287:12
[INFO] [stdout]     |
[INFO] [stdout] 287 |         if (self.get_name() == String::from("else")) {
[INFO] [stdout]     |            ^                                       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 287 -         if (self.get_name() == String::from("else")) {
[INFO] [stdout] 287 +         if self.get_name() == String::from("else")  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StdinReader`
[INFO] [stdout]  --> src/main.rs:6:45
[INFO] [stdout]   |
[INFO] [stdout] 6 | use reader::{FileReader, Reader, ReaderArg, StdinReader};
[INFO] [stdout]   |                                             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Writer`
[INFO] [stdout]  --> src/main.rs:8:28
[INFO] [stdout]   |
[INFO] [stdout] 8 | use writer::{StdoutWriter, Writer};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/assembly_interpreter.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut instruction: Vec<char> = instruction.chars().collect();
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/assembly_interpreter.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut rands = &instruction[index..instruction.len()];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/assembly_interpreter.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut instruction: Vec<char> = instruction.chars().collect();
[INFO] [stdout]    |             ----^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/assembly_interpreter.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut rands = &instruction[index..instruction.len()];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/compiler.rs:267:13
[INFO] [stdout]     |
[INFO] [stdout] 267 |         for c in keyword.chars() {}
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]   --> src/reader.rs:64:24
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn read(&mut self, arg: ReaderArg) -> io::Result<()> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/writer.rs:15:25
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn write(&mut self, output: String) {}
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/writer.rs:16:27
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn writeln(&mut self, output: String) {}
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AssemblyInterpreter` is never constructed
[INFO] [stdout]  --> src/assembly_interpreter.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct AssemblyInterpreter {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `AssemblyInterpreterError` is never used
[INFO] [stdout]  --> src/assembly_interpreter.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum AssemblyInterpreterError {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/assembly_interpreter.rs:14:8
[INFO] [stdout]     |
[INFO] [stdout]  13 | impl AssemblyInterpreter {
[INFO] [stdout]     | ------------------------ associated items in this implementation
[INFO] [stdout]  14 |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  23 |     fn eval(&mut self, input: String) -> Result<(), AssemblyInterpreterError> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  40 |     fn process_instruction(&mut self, instruction: String) -> Result<(), AssemblyInterpreterError> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  69 |     fn divs_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     fn muls_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn neg_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     fn sub_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 297 |     fn add_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 354 |     fn move_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `keyword` is never used
[INFO] [stdout]    --> src/compiler.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl<'a, R: Reader, W: Writer> Compiler<'a, R, W> {
[INFO] [stdout]     | ------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 266 |     fn keyword(&mut self, keyword: &str) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Raw` and `None` are never constructed
[INFO] [stdout]  --> src/reader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum ReaderArg {
[INFO] [stdout]   |          --------- variants in this enum
[INFO] [stdout] 6 |     Raw(String),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     FilePath(String),
[INFO] [stdout] 8 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ReaderArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdinReader` is never constructed
[INFO] [stdout]   --> src/reader.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct StdinReader {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestReader` is never constructed
[INFO] [stdout]   --> src/reader.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct TestReader {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/reader.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl StdinReader {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 47 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/reader.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl TestReader {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 53 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestWriter` is never constructed
[INFO] [stdout]  --> src/writer.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct TestWriter {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/writer.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl TestWriter {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/assembly_interpreter.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             self.process_instruction(instruction);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let _ = self.process_instruction(instruction);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:155:13
[INFO] [stdout]     |
[INFO] [stdout] 155 |             self.match_char(&'(');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 155 |             let _ = self.match_char(&'(');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             self.match_char(&')');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = self.match_char(&')');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:165:13
[INFO] [stdout]     |
[INFO] [stdout] 165 |             self.match_char(&'(');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 165 |             let _ = self.match_char(&'(');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |             self.match_char(&')');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |             let _ = self.match_char(&')');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:202:13
[INFO] [stdout]     |
[INFO] [stdout] 202 |             self.get_char();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |             let _ = self.get_char();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |         self.match_char(&'=');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let _ = self.match_char(&'=');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |         self.match_char(&';');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let _ = self.match_char(&';');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |         self.match_char(&'{');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 243 |         let _ = self.match_char(&'{');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         self.match_char(&'}');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let _ = self.match_char(&'}');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/compiler.rs:267:13
[INFO] [stdout]     |
[INFO] [stdout] 267 |         for c in keyword.chars() {}
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/compiler.rs:306:13
[INFO] [stdout]     |
[INFO] [stdout] 306 |         let mut outputs = fs::read_to_string("./test_data/assembly_outputs.txt")
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]   --> src/reader.rs:64:24
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn read(&mut self, arg: ReaderArg) -> io::Result<()> {
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/writer.rs:15:25
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn write(&mut self, output: String) {}
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/writer.rs:16:27
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn writeln(&mut self, output: String) {}
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `output` is never read
[INFO] [stdout]  --> src/assembly_interpreter.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct AssemblyInterpreter {
[INFO] [stdout]   |            ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     output: Option<isize>,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `AssemblyInterpreter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Unexpected` is never constructed
[INFO] [stdout]   --> src/assembly_interpreter.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub enum AssemblyInterpreterError {
[INFO] [stdout]    |          ------------------------ variant in this enum
[INFO] [stdout] 10 |     Unexpected,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `neg_op` is never used
[INFO] [stdout]    --> src/assembly_interpreter.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout]  13 | impl AssemblyInterpreter {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn neg_op(&mut self, rands: &[char]) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `keyword` is never used
[INFO] [stdout]    --> src/compiler.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout]  15 | impl<'a, R: Reader, W: Writer> Compiler<'a, R, W> {
[INFO] [stdout]     | ------------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 266 |     fn keyword(&mut self, keyword: &str) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]  --> src/reader.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum ReaderArg {
[INFO] [stdout]   |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ReaderArg` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StdinReader` is never constructed
[INFO] [stdout]   --> src/reader.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct StdinReader {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/reader.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl StdinReader {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 47 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/assembly_interpreter.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             self.process_instruction(instruction);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |             let _ = self.process_instruction(instruction);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:434:9
[INFO] [stdout]     |
[INFO] [stdout] 434 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 434 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:450:9
[INFO] [stdout]     |
[INFO] [stdout] 450 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 450 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:466:9
[INFO] [stdout]     |
[INFO] [stdout] 466 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 466 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:483:9
[INFO] [stdout]     |
[INFO] [stdout] 483 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 483 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:499:9
[INFO] [stdout]     |
[INFO] [stdout] 499 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 499 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:517:9
[INFO] [stdout]     |
[INFO] [stdout] 517 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 517 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/assembly_interpreter.rs:536:9
[INFO] [stdout]     |
[INFO] [stdout] 536 |         asm_interp.eval(writer.output);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 536 |         let _ = asm_interp.eval(writer.output);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:155:13
[INFO] [stdout]     |
[INFO] [stdout] 155 |             self.match_char(&'(');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 155 |             let _ = self.match_char(&'(');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             self.match_char(&')');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let _ = self.match_char(&')');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:165:13
[INFO] [stdout]     |
[INFO] [stdout] 165 |             self.match_char(&'(');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 165 |             let _ = self.match_char(&'(');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:167:13
[INFO] [stdout]     |
[INFO] [stdout] 167 |             self.match_char(&')');
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |             let _ = self.match_char(&')');
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:202:13
[INFO] [stdout]     |
[INFO] [stdout] 202 |             self.get_char();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 202 |             let _ = self.get_char();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |         self.match_char(&'=');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 231 |         let _ = self.match_char(&'=');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |         self.match_char(&';');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let _ = self.match_char(&';');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |         self.match_char(&'{');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 243 |         let _ = self.match_char(&'{');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/compiler.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         self.match_char(&'}');
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let _ = self.match_char(&'}');
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "737f09ee793acdd7eb6de5265bd4fd550d0e4ccf96bed983692638e6c0a20edd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "737f09ee793acdd7eb6de5265bd4fd550d0e4ccf96bed983692638e6c0a20edd", kill_on_drop: false }`
[INFO] [stdout] 737f09ee793acdd7eb6de5265bd4fd550d0e4ccf96bed983692638e6c0a20edd
