[INFO] cloning repository https://github.com/rodrigobaraglia/iridii
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rodrigobaraglia/iridii" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Firidii", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Firidii'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7bf556bfbdbbd69fc5c884b0a604875a90cd507
[INFO] checking rodrigobaraglia/iridii against try#29194e8f603400afdb2f86c9418e9fccb1628ea0 for pr-135331-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Firidii" "/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/rodrigobaraglia/iridii
[INFO] finished tweaking git repo https://github.com/rodrigobaraglia/iridii
[INFO] tweaked toml for git repo https://github.com/rodrigobaraglia/iridii written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rodrigobaraglia/iridii on toolchain 29194e8f603400afdb2f86c9418e9fccb1628ea0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29194e8f603400afdb2f86c9418e9fccb1628ea0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rodrigobaraglia/iridii 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" "+29194e8f603400afdb2f86c9418e9fccb1628ea0" "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 rodrigobaraglia/iridii against try#29194e8f603400afdb2f86c9418e9fccb1628ea0 for pr-135331-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigobaraglia%2Firidii" "/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/rodrigobaraglia/iridii
[INFO] finished tweaking git repo https://github.com/rodrigobaraglia/iridii
[INFO] tweaked toml for git repo https://github.com/rodrigobaraglia/iridii written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rodrigobaraglia/iridii on toolchain 29194e8f603400afdb2f86c9418e9fccb1628ea0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+29194e8f603400afdb2f86c9418e9fccb1628ea0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rodrigobaraglia/iridii 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" "+29194e8f603400afdb2f86c9418e9fccb1628ea0" "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] 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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+29194e8f603400afdb2f86c9418e9fccb1628ea0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 034e6535ef353029b596fbf50e9a943d3174ba07f5436bbcd7c13dba2dd217ea
[INFO] running `Command { std: "docker" "start" "-a" "034e6535ef353029b596fbf50e9a943d3174ba07f5436bbcd7c13dba2dd217ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "034e6535ef353029b596fbf50e9a943d3174ba07f5436bbcd7c13dba2dd217ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "034e6535ef353029b596fbf50e9a943d3174ba07f5436bbcd7c13dba2dd217ea", kill_on_drop: false }`
[INFO] [stdout] 034e6535ef353029b596fbf50e9a943d3174ba07f5436bbcd7c13dba2dd217ea
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+29194e8f603400afdb2f86c9418e9fccb1628ea0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e1578fe6cc31620e1ee16bfcdf1fe79e467e9c2e5720ca0c4c005c0d2520088
[INFO] running `Command { std: "docker" "start" "-a" "1e1578fe6cc31620e1ee16bfcdf1fe79e467e9c2e5720ca0c4c005c0d2520088", kill_on_drop: false }`
[INFO] [stderr]     Checking iridium v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Op` is never used
[INFO] [stdout]  --> src/assembler/lex.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Op = Opcode;
[INFO] [stdout]   |      ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tok` is never used
[INFO] [stdout]  --> src/assembler/lex.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Tok = Token;
[INFO] [stdout]   |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Instruction` is never constructed
[INFO] [stdout]  --> src/assembler/lex.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Instruction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Operands` is never constructed
[INFO] [stdout]   --> src/assembler/lex.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Operands([Option<Token>; 3]);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_instruction` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Lexer<'_> {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 26 |     fn read_instruction(&mut self) -> Instruction {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]   --> src/assembler/lex.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Program(Vec<Instruction>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_integer` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn parse_integer(i: i32) -> (u8, u8) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_operand` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Token {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 48 |     fn parse_operand(self, operands: &mut Vec<u8>) -> Result<(), &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bytes` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Instruction {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 63 |     pub fn to_bytes(&self) -> Result<Vec<u8>, &'static str> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/assembler/token.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_letter` is never used
[INFO] [stdout]   --> src/assembler/token.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn is_letter(ch: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_digit` is never used
[INFO] [stdout]   --> src/assembler/token.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn is_digit(ch: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_whitespace` is never used
[INFO] [stdout]   --> src/assembler/token.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn is_whitespace(ch: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cursor` is never constructed
[INFO] [stdout]   --> src/assembler/token.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct Cursor<'a>(Chars<'a>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]   --> src/assembler/token.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct Lexer<'a> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/assembler/token.rs:95:12
[INFO] [stdout]     |
[INFO] [stdout]  94 | impl Lexer<'_> {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout]  95 |     pub fn new(input: &String) -> Lexer {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn read_char(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn read_while(&mut self, predicate: impl Fn(char) -> bool) -> (usize, usize, usize, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     fn read_identifier(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     fn read_integer(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn read_register(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn next_token(&mut self) -> Token {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ILGL` is never used
[INFO] [stdout]   --> src/assembler/token.rs:60:15
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub const ILGL: &'static str = "ilgl";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `REGISTER` is never used
[INFO] [stdout]   --> src/assembler/token.rs:64:15
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub const REGISTER: char = '$';
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALUE` is never used
[INFO] [stdout]   --> src/assembler/token.rs:65:15
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub const VALUE: char = '#';
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_integer` is never used
[INFO] [stdout]   --> src/assembler/parser.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn parse_integer(i: i32) -> (u8, u8) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/assembler/parser.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Parser<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/assembler/parser.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 33 |     pub fn new(input: &'a String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn register(&mut self) -> Result<u8, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn integer(&mut self) -> Result<(u8, u8), &'static str> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn integer_op(&mut self, op: Opcode) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn nullary_op(&mut self, op: Opcode) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn binary_op(&mut self, op: Opcode) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn next_instruction(&mut self) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `integer_for_register` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub const integer_for_register: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_register` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub const operator_for_register: &'static str =
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `register_for_integer` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub const register_for_integer: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_integer` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub const operator_for_integer: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heap` is never read
[INFO] [stdout]  --> src/vm.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct VM {
[INFO] [stdout]   |            -- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     heap: Vec<u8>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `alloc` is never used
[INFO] [stdout]    --> src/vm.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout]  16 | impl VM {
[INFO] [stdout]     | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn alloc(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/assembler/token.rs:95:23
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn new(input: &String) -> Lexer {
[INFO] [stdout]    |                       ^^^^^^^     ----- the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn new(input: &String) -> Lexer<'_> {
[INFO] [stdout]    |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `integer_for_register` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub const integer_for_register: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 5 -     pub const integer_for_register: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout] 5 +     pub const INTEGER_FOR_REGISTER: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_register` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub const operator_for_register: &'static str =
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 6 -     pub const operator_for_register: &'static str =
[INFO] [stdout] 6 +     pub const OPERATOR_FOR_REGISTER: &'static str =
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `register_for_integer` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub const register_for_integer: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 8 -     pub const register_for_integer: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout] 8 +     pub const REGISTER_FOR_INTEGER: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_integer` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub const operator_for_integer: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 9 -     pub const operator_for_integer: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout] 9 +     pub const OPERATOR_FOR_INTEGER: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vm.rs:223:20
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn program(&self) -> Iter<u8> {
[INFO] [stdout]     |                    ^^^^^     -------- the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn program(&self) -> Iter<'_, u8> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vm.rs:227:22
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn registers(&self) -> Iter<i32> {
[INFO] [stdout]     |                      ^^^^^     --------- the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn registers(&self) -> Iter<'_, i32> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Op` is never used
[INFO] [stdout]  --> src/assembler/lex.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Op = Opcode;
[INFO] [stdout]   |      ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tok` is never used
[INFO] [stdout]  --> src/assembler/lex.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Tok = Token;
[INFO] [stdout]   |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Instruction` is never constructed
[INFO] [stdout]  --> src/assembler/lex.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Instruction {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Operands` is never constructed
[INFO] [stdout]   --> src/assembler/lex.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Operands([Option<Token>; 3]);
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read_instruction` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Lexer<'_> {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 26 |     fn read_instruction(&mut self) -> Instruction {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Program` is never constructed
[INFO] [stdout]   --> src/assembler/lex.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Program(Vec<Instruction>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_integer` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn parse_integer(i: i32) -> (u8, u8) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `parse_operand` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Token {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 48 |     fn parse_operand(self, operands: &mut Vec<u8>) -> Result<(), &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_bytes` is never used
[INFO] [stdout]   --> src/assembler/lex.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Instruction {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 63 |     pub fn to_bytes(&self) -> Result<Vec<u8>, &'static str> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/assembler/token.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_letter` is never used
[INFO] [stdout]   --> src/assembler/token.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn is_letter(ch: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_digit` is never used
[INFO] [stdout]   --> src/assembler/token.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn is_digit(ch: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_whitespace` is never used
[INFO] [stdout]   --> src/assembler/token.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn is_whitespace(ch: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cursor` is never constructed
[INFO] [stdout]   --> src/assembler/token.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | struct Cursor<'a>(Chars<'a>);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]   --> src/assembler/token.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct Lexer<'a> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/assembler/token.rs:95:12
[INFO] [stdout]     |
[INFO] [stdout]  94 | impl Lexer<'_> {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout]  95 |     pub fn new(input: &String) -> Lexer {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     fn read_char(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn read_while(&mut self, predicate: impl Fn(char) -> bool) -> (usize, usize, usize, usize) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 131 |     fn read_identifier(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     fn read_integer(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     fn read_register(&mut self) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 151 |     fn skip_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 157 |     pub fn next_token(&mut self) -> Token {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ILGL` is never used
[INFO] [stdout]   --> src/assembler/token.rs:60:15
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub const ILGL: &'static str = "ilgl";
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `REGISTER` is never used
[INFO] [stdout]   --> src/assembler/token.rs:64:15
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub const REGISTER: char = '$';
[INFO] [stdout]    |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALUE` is never used
[INFO] [stdout]   --> src/assembler/token.rs:65:15
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub const VALUE: char = '#';
[INFO] [stdout]    |               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_integer` is never used
[INFO] [stdout]   --> src/assembler/parser.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn parse_integer(i: i32) -> (u8, u8) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/assembler/parser.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Parser<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/assembler/parser.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 33 |     pub fn new(input: &'a String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn register(&mut self) -> Result<u8, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn integer(&mut self) -> Result<(u8, u8), &'static str> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn integer_op(&mut self, op: Opcode) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     fn nullary_op(&mut self, op: Opcode) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn binary_op(&mut self, op: Opcode) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn next_instruction(&mut self) -> Result<[u8; 4], &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `integer_for_register` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub const integer_for_register: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_register` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub const operator_for_register: &'static str =
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `register_for_integer` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub const register_for_integer: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_integer` is never used
[INFO] [stdout]  --> src/assembler/parser.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub const operator_for_integer: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heap` is never read
[INFO] [stdout]  --> src/vm.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct VM {
[INFO] [stdout]   |            -- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     heap: Vec<u8>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `alloc` is never used
[INFO] [stdout]    --> src/vm.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout]  16 | impl VM {
[INFO] [stdout]     | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn alloc(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/assembler/token.rs:95:23
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn new(input: &String) -> Lexer {
[INFO] [stdout]    |                       ^^^^^^^     ----- the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn new(input: &String) -> Lexer<'_> {
[INFO] [stdout]    |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `integer_for_register` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub const integer_for_register: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 5 -     pub const integer_for_register: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout] 5 +     pub const INTEGER_FOR_REGISTER: &'static str = "syntax error: expected register, found integer";
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_register` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub const operator_for_register: &'static str =
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 6 -     pub const operator_for_register: &'static str =
[INFO] [stdout] 6 +     pub const OPERATOR_FOR_REGISTER: &'static str =
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `register_for_integer` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub const register_for_integer: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 8 -     pub const register_for_integer: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout] 8 +     pub const REGISTER_FOR_INTEGER: &'static str = "syntax error: expected integer, found register";
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_for_integer` should have an upper case name
[INFO] [stdout]  --> src/assembler/parser.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub const operator_for_integer: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]   |
[INFO] [stdout] 9 -     pub const operator_for_integer: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout] 9 +     pub const OPERATOR_FOR_INTEGER: &'static str = "syntax error: expected integer, found operator";
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vm.rs:223:20
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn program(&self) -> Iter<u8> {
[INFO] [stdout]     |                    ^^^^^     -------- the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn program(&self) -> Iter<'_, u8> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/vm.rs:227:22
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn registers(&self) -> Iter<i32> {
[INFO] [stdout]     |                      ^^^^^     --------- the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 227 |     pub fn registers(&self) -> Iter<'_, i32> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "1e1578fe6cc31620e1ee16bfcdf1fe79e467e9c2e5720ca0c4c005c0d2520088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e1578fe6cc31620e1ee16bfcdf1fe79e467e9c2e5720ca0c4c005c0d2520088", kill_on_drop: false }`
[INFO] [stdout] 1e1578fe6cc31620e1ee16bfcdf1fe79e467e9c2e5720ca0c4c005c0d2520088