[INFO] cloning repository https://github.com/ajkachnic/sandstorm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajkachnic/sandstorm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkachnic%2Fsandstorm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkachnic%2Fsandstorm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce1b8ea401607b9e6fcafeecc3d6a0bd3ea0674e
[INFO] checking ajkachnic/sandstorm against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajkachnic%2Fsandstorm" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ajkachnic/sandstorm
[INFO] finished tweaking git repo https://github.com/ajkachnic/sandstorm
[INFO] tweaked toml for git repo https://github.com/ajkachnic/sandstorm written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ajkachnic/sandstorm on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ajkachnic/sandstorm 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded supports-hyperlinks v1.2.0
[INFO] [stderr]   Downloaded miette v3.2.0
[INFO] [stderr]   Downloaded is_ci v1.1.1
[INFO] [stderr]   Downloaded typed-builder v0.9.1
[INFO] [stderr]   Downloaded supports-unicode v1.0.2
[INFO] [stderr]   Downloaded miette-derive v3.2.0
[INFO] [stderr]   Downloaded similar v1.3.0
[INFO] [stderr]   Downloaded owo-colors v2.1.0
[INFO] [stderr]   Downloaded unicode-linebreak v0.1.2
[INFO] [stderr]   Downloaded supports-color v1.3.0
[INFO] [stderr]   Downloaded smawk v0.3.1
[INFO] [stderr]   Downloaded object v0.26.2
[INFO] [stderr]   Downloaded syn v1.0.78
[INFO] [stderr]   Downloaded backtrace v0.3.61
[INFO] [stderr]   Downloaded insta v1.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75f7b1d8926e38bd9aa87ae58af09945916552cde3e5e239d1e7033d21e3f0a0
[INFO] running `Command { std: "docker" "start" "-a" "75f7b1d8926e38bd9aa87ae58af09945916552cde3e5e239d1e7033d21e3f0a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75f7b1d8926e38bd9aa87ae58af09945916552cde3e5e239d1e7033d21e3f0a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75f7b1d8926e38bd9aa87ae58af09945916552cde3e5e239d1e7033d21e3f0a0", kill_on_drop: false }`
[INFO] [stdout] 75f7b1d8926e38bd9aa87ae58af09945916552cde3e5e239d1e7033d21e3f0a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 967e7e6ce219ad30e6265ee46e0f6906d60967f53fab81c8f43eb5898259b21a
[INFO] running `Command { std: "docker" "start" "-a" "967e7e6ce219ad30e6265ee46e0f6906d60967f53fab81c8f43eb5898259b21a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.78
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking owo-colors v2.1.0
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
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[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking similar v1.3.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking supports-unicode v1.0.2
[INFO] [stderr]     Checking supports-color v1.3.0
[INFO] [stderr]     Checking supports-hyperlinks v1.2.0
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling miette-derive v3.2.0
[INFO] [stderr]    Compiling typed-builder v0.9.1
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking miette v3.2.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking serde_yaml v0.8.21
[INFO] [stderr]     Checking sandstorm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:21:38
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Operator::Asterisk => Precedence::Multiplicative,
[INFO] [stdout]    |                 ------------------ matches some of the same values
[INFO] [stdout] 40 |                 Operator::Slash => Precedence::Multiplicative,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] 41 |                 Operator::Plus => Precedence::Additive,
[INFO] [stdout]    |                 -------------- matches some of the same values
[INFO] [stdout] 42 |                 Operator::Minus => Precedence::Additive,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ ...and 10 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/parse.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         expected: TokenKind,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> src/parse.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         found: TokenKind,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size` is never read
[INFO] [stdout]    --> src/parse.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         size: isize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/parse.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         tok: TokenKind,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_is` is never used
[INFO] [stdout]    --> src/lex.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn peek_is(&mut self, check: char) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek_is`, `peek_precedence`, `peek_slice`, `parse_assign_statement`, and `get_ident` are never used
[INFO] [stdout]    --> src/parse.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl<'a> Parser<'a> {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn peek_is(&self, check: TokenKind) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |     fn peek_precedence(&self) -> Precedence {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn peek_slice(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |     fn parse_assign_statement(&mut self) -> ParseResult<AssignStatement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 806 |     fn get_ident(&mut self) -> ParseResult<Identifier> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Type`
[INFO] [stdout]  --> src/checker.rs:1:72
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::{Expression, ExpressionKind, Statement, StatementKind, Type, TypeKind};
[INFO] [stdout]   |                                                                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:21:38
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Operator::Asterisk => Precedence::Multiplicative,
[INFO] [stdout]    |                 ------------------ matches some of the same values
[INFO] [stdout] 40 |                 Operator::Slash => Precedence::Multiplicative,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] 41 |                 Operator::Plus => Precedence::Additive,
[INFO] [stdout]    |                 -------------- matches some of the same values
[INFO] [stdout] 42 |                 Operator::Minus => Precedence::Additive,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ ...and 10 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/parse.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         expected: TokenKind,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> src/parse.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         found: TokenKind,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size` is never read
[INFO] [stdout]    --> src/parse.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         size: isize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/parse.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         tok: TokenKind,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut opts = Options::new();
[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: struct `TypeEnv` is never constructed
[INFO] [stdout]  --> src/checker.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct TypeEnv {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_type`, and `get_type` are never used
[INFO] [stdout]   --> src/checker.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl TypeEnv {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn set_type(&mut self, key: String, t: TypeKind) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn get_type(&self, key: &str) -> Option<Rc<TypeKind>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TypeError` is never used
[INFO] [stdout]   --> src/checker.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub enum TypeError {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `TypeResult` is never used
[INFO] [stdout]   --> src/checker.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub type TypeResult<T> = Result<T, TypeError>;
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TypeChecker` is never constructed
[INFO] [stdout]   --> src/checker.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | struct TypeChecker {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `check_statement`, and `check_expression` are never used
[INFO] [stdout]   --> src/checker.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl TypeChecker {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 68 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn check_statement(&mut self, stmt: Statement) -> TypeResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn check_expression(&mut self, expr: Expression) -> TypeResult<Rc<TypeKind>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_is` is never used
[INFO] [stdout]    --> src/lex.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn peek_is(&mut self, check: char) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek_is`, `peek_precedence`, `peek_slice`, `parse_assign_statement`, and `get_ident` are never used
[INFO] [stdout]    --> src/parse.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl<'a> Parser<'a> {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn peek_is(&self, check: TokenKind) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |     fn peek_precedence(&self) -> Precedence {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn peek_slice(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |     fn parse_assign_statement(&mut self) -> ParseResult<AssignStatement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 806 |     fn get_ident(&mut self) -> ParseResult<Identifier> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking insta v1.8.0
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/lex.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[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: `Type`
[INFO] [stdout]  --> src/checker.rs:1:72
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::ast::{Expression, ExpressionKind, Statement, StatementKind, Type, TypeKind};
[INFO] [stdout]   |                                                                        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:21:38
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Operator::Asterisk => Precedence::Multiplicative,
[INFO] [stdout]    |                 ------------------ matches some of the same values
[INFO] [stdout] 40 |                 Operator::Slash => Precedence::Multiplicative,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] 41 |                 Operator::Plus => Precedence::Additive,
[INFO] [stdout]    |                 -------------- matches some of the same values
[INFO] [stdout] 42 |                 Operator::Minus => Precedence::Additive,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ ...and 10 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/parse.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         expected: TokenKind,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> src/parse.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         found: TokenKind,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size` is never read
[INFO] [stdout]    --> src/parse.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         size: isize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/parse.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         tok: TokenKind,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut opts = Options::new();
[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: struct `TypeEnv` is never constructed
[INFO] [stdout]  --> src/checker.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct TypeEnv {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set_type`, and `get_type` are never used
[INFO] [stdout]   --> src/checker.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl TypeEnv {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 12 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     fn set_type(&mut self, key: String, t: TypeKind) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn get_type(&self, key: &str) -> Option<Rc<TypeKind>> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TypeError` is never used
[INFO] [stdout]   --> src/checker.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub enum TypeError {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `TypeResult` is never used
[INFO] [stdout]   --> src/checker.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub type TypeResult<T> = Result<T, TypeError>;
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TypeChecker` is never constructed
[INFO] [stdout]   --> src/checker.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | struct TypeChecker {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `check_statement`, and `check_expression` are never used
[INFO] [stdout]   --> src/checker.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl TypeChecker {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 68 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 74 |     pub fn check_statement(&mut self, stmt: Statement) -> TypeResult<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn check_expression(&mut self, expr: Expression) -> TypeResult<Rc<TypeKind>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_is` is never used
[INFO] [stdout]    --> src/lex.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn peek_is(&mut self, check: char) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek_is`, `peek_precedence`, `peek_slice`, `parse_assign_statement`, and `get_ident` are never used
[INFO] [stdout]    --> src/parse.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl<'a> Parser<'a> {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn peek_is(&self, check: TokenKind) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |     fn peek_precedence(&self) -> Precedence {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn peek_slice(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |     fn parse_assign_statement(&mut self) -> ParseResult<AssignStatement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 806 |     fn get_ident(&mut self) -> ParseResult<Identifier> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ExpectedEndOfString { src: Source, bad: Span },
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/lex.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad` is never read
[INFO] [stdout]   --> src/lex.rs:21:38
[INFO] [stdout]    |
[INFO] [stdout] 21 |     ExpectedEndOfChar { src: Source, bad: Span },
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/parse.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 Operator::Asterisk => Precedence::Multiplicative,
[INFO] [stdout]    |                 ------------------ matches some of the same values
[INFO] [stdout] 40 |                 Operator::Slash => Precedence::Multiplicative,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] 41 |                 Operator::Plus => Precedence::Additive,
[INFO] [stdout]    |                 -------------- matches some of the same values
[INFO] [stdout] 42 |                 Operator::Minus => Precedence::Additive,
[INFO] [stdout]    |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 55 |                 _ => Precedence::Lowest,
[INFO] [stdout]    |                 ^ ...and 10 other patterns collectively make this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]   --> src/parse.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |         span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> src/parse.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         src: std::sync::Arc<String>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:116:9
[INFO] [stdout]     |
[INFO] [stdout] 116 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `span` is never read
[INFO] [stdout]    --> src/parse.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         span: Span,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]    --> src/parse.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 144 |         src: std::sync::Arc<String>,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `expected` is never read
[INFO] [stdout]   --> src/parse.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |         expected: TokenKind,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> src/parse.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 78 |         found: TokenKind,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `size` is never read
[INFO] [stdout]    --> src/parse.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         size: isize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tok` is never read
[INFO] [stdout]    --> src/parse.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         tok: TokenKind,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `peek_is` is never used
[INFO] [stdout]    --> src/lex.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<'a> Lexer<'a> {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 152 |     fn peek_is(&mut self, check: char) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `peek_is`, `peek_precedence`, `peek_slice`, `parse_assign_statement`, and `get_ident` are never used
[INFO] [stdout]    --> src/parse.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 162 | impl<'a> Parser<'a> {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 205 |     fn peek_is(&self, check: TokenKind) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 226 |     fn peek_precedence(&self) -> Precedence {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn peek_slice(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 302 |     fn parse_assign_statement(&mut self) -> ParseResult<AssignStatement> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 806 |     fn get_ident(&mut self) -> ParseResult<Identifier> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.67s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "967e7e6ce219ad30e6265ee46e0f6906d60967f53fab81c8f43eb5898259b21a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "967e7e6ce219ad30e6265ee46e0f6906d60967f53fab81c8f43eb5898259b21a", kill_on_drop: false }`
[INFO] [stdout] 967e7e6ce219ad30e6265ee46e0f6906d60967f53fab81c8f43eb5898259b21a
