[INFO] cloning repository https://github.com/terrarier2111/MathInterpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/terrarier2111/MathInterpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FMathInterpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FMathInterpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab7775ec437cde71a64cc227fb4d06a5ab702bc7
[INFO] testing terrarier2111/MathInterpreter against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FMathInterpreter" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/terrarier2111/MathInterpreter on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/terrarier2111/MathInterpreter
[INFO] finished tweaking git repo https://github.com/terrarier2111/MathInterpreter
[INFO] tweaked toml for git repo https://github.com/terrarier2111/MathInterpreter written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/terrarier2111/MathInterpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust_decimal v1.19.0
[INFO] [stderr]   Downloaded rust_decimal_macros v1.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ed6c1d3c32d6d457bdc2668acbc42317d9b7f5ed6c5d6ec3e3991f8f5b250b3
[INFO] running `Command { std: "docker" "start" "-a" "9ed6c1d3c32d6d457bdc2668acbc42317d9b7f5ed6c5d6ec3e3991f8f5b250b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ed6c1d3c32d6d457bdc2668acbc42317d9b7f5ed6c5d6ec3e3991f8f5b250b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ed6c1d3c32d6d457bdc2668acbc42317d9b7f5ed6c5d6ec3e3991f8f5b250b3", kill_on_drop: false }`
[INFO] [stdout] 9ed6c1d3c32d6d457bdc2668acbc42317d9b7f5ed6c5d6ec3e3991f8f5b250b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03aa5135693ab4c23ab9550980fbaa5458741dff5b4e1cfa97b62a0fd0a0d0aa
[INFO] running `Command { std: "docker" "start" "-a" "03aa5135693ab4c23ab9550980fbaa5458741dff5b4e1cfa97b62a0fd0a0d0aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling rust_decimal v1.19.0
[INFO] [stderr]    Compiling rust_decimal_macros v1.19.0
[INFO] [stderr]    Compiling MathInterpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ANSMode`, `Config`, `DiagnosticsConfig`, `Mode`, `_lib`
[INFO] [stdout]  --> src/equation_simplifier.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{_lib, parser, shared, ANSMode, Config, DiagnosticsConfig, Mode};
[INFO] [stdout]   |             ^^^^                  ^^^^^^^  ^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Config`, `DiagnosticsConfig`, `_lib`
[INFO] [stdout]   --> src/parser.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |     register_const, ANSMode, Config, DiagnosticsConfig, _lib,
[INFO] [stdout]    |                              ^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/equation_solver.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn solve_lin_1_arg(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stdout]   |                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rec_eq` is assigned to, but never used
[INFO] [stdout]    --> src/parser.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut rec_eq = NONE;
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_rec_eq` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rec_eq` is never read
[INFO] [stdout]    --> src/parser.rs:153:29
[INFO] [stdout]     |
[INFO] [stdout] 153 | ...                   rec_eq = token.0;
[INFO] [stdout]     |                       ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `diagnostics`
[INFO] [stdout]   --> src/_lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     diagnostics: DiagnosticsConfig,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `color`
[INFO] [stdout]   --> src/_lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     color: bool,                              // FIXME: Currently unsupported
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `printing_order`
[INFO] [stdout]   --> src/_lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     printing_order: DiagnosticsPrintingOrder, // FIXME: Currently unsupported
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Before`
[INFO] [stdout]   --> src/_lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Before,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Simplify`
[INFO] [stdout]   --> src/_lib.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     Simplify,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Mode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/_lib.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Solve`
[INFO] [stdout]   --> src/_lib.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     Solve,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Mode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/_lib.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Never`
[INFO] [stdout]   --> src/_lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     Never,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ANSMode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/_lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[derive(Copy, Clone, Eq, PartialEq)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Always`
[INFO] [stdout]   --> src/_lib.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     Always,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ANSMode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/_lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[derive(Copy, Clone, Eq, PartialEq)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_lin_1_arg`
[INFO] [stdout]  --> src/equation_solver.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn solve_lin_1_arg(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shrink_lo`
[INFO] [stdout]   --> src/error.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn shrink_lo(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shrink_hi`
[INFO] [stdout]   --> src/error.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn shrink_hi(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expand_lo`
[INFO] [stdout]   --> src/error.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn expand_lo(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `error`
[INFO] [stdout]    --> src/error.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn error(&mut self, error: String) -> &mut Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `warn`
[INFO] [stdout]    --> src/error.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn warn(&mut self, warning: String) -> &mut Self {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `suggest_spanned`
[INFO] [stdout]    --> src/error.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn suggest_spanned(&mut self, suggestion: String, span: Span) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_multi_span_string`
[INFO] [stdout]    --> src/error.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Suggestion`
[INFO] [stdout]    --> src/error.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     Suggestion(String, Span),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `DiagnosticItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/error.rs:160:10
[INFO] [stdout]     |
[INFO] [stdout] 160 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_input`
[INFO] [stdout]    --> src/parser.rs:486:12
[INFO] [stdout]     |
[INFO] [stdout] 486 |     pub fn get_input(&self) -> &String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineRecFunc`
[INFO] [stdout]    --> src/parser.rs:751:5
[INFO] [stdout]     |
[INFO] [stdout] 751 |     DefineRecFunc(String, Vec<String>, (usize, usize)), // function name, function arguments, (recursive min idx, recursive min val)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Action` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:747:10
[INFO] [stdout]     |
[INFO] [stdout] 747 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kind`
[INFO] [stdout]    --> src/parser.rs:756:12
[INFO] [stdout]     |
[INFO] [stdout] 756 |     pub fn kind(&self) -> ActionKind {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineVar`
[INFO] [stdout]    --> src/parser.rs:768:5
[INFO] [stdout]     |
[INFO] [stdout] 768 |     DefineVar,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineFunc`
[INFO] [stdout]    --> src/parser.rs:769:5
[INFO] [stdout]     |
[INFO] [stdout] 769 |     DefineFunc,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineRecFunc`
[INFO] [stdout]    --> src/parser.rs:770:5
[INFO] [stdout]     |
[INFO] [stdout] 770 |     DefineRecFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eval`
[INFO] [stdout]    --> src/parser.rs:771:5
[INFO] [stdout]     |
[INFO] [stdout] 771 |     Eval,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tokens_to_string`
[INFO] [stdout]    --> src/parser.rs:968:12
[INFO] [stdout]     |
[INFO] [stdout] 968 |         fn tokens_to_string(tokens: &Vec<Token>) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tokens_to_string_ranged`
[INFO] [stdout]    --> src/parser.rs:976:12
[INFO] [stdout]     |
[INFO] [stdout] 976 |         fn tokens_to_string_ranged(tokens: &Vec<Token>, start: usize, end: usize) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `inner_span`
[INFO] [stdout]     --> src/parser.rs:1084:5
[INFO] [stdout]      |
[INFO] [stdout] 1084 |     inner_span: Span,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: `Region` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     --> src/parser.rs:1080:10
[INFO] [stdout]      |
[INFO] [stdout] 1080 | #[derive(Debug)]
[INFO] [stdout]      |          ^^^^^
[INFO] [stdout]      = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `replace_in_tokens`
[INFO] [stdout]     --> src/parser.rs:1098:19
[INFO] [stdout]      |
[INFO] [stdout] 1098 |     pub(crate) fn replace_in_tokens(self, tokens: &mut Vec<Token>) {
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_token`
[INFO] [stdout]     --> src/parser.rs:1106:19
[INFO] [stdout]      |
[INFO] [stdout] 1106 |     pub(crate) fn to_token(self, tokens: Vec<Token>) -> Token {
[INFO] [stdout]      |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_inner_tokens`
[INFO] [stdout]     --> src/parser.rs:1110:19
[INFO] [stdout]      |
[INFO] [stdout] 1110 |     pub(crate) fn to_inner_tokens(self, tokens: &Vec<Token>) -> Vec<Token> {
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_braces`
[INFO] [stdout]     --> src/parser.rs:1118:19
[INFO] [stdout]      |
[INFO] [stdout] 1118 |     pub(crate) fn pop_braces(&mut self, tokens: &mut Vec<Token>) {
[INFO] [stdout]      |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]     --> src/parser.rs:1209:19
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     pub(crate) fn len(&self) -> usize {
[INFO] [stdout]      |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_ok`
[INFO] [stdout]     --> src/parser.rs:1253:19
[INFO] [stdout]      |
[INFO] [stdout] 1253 |     pub(crate) fn new_ok(val: T) -> ParseResult<T> {
[INFO] [stdout]      |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diagnostics`
[INFO] [stdout]     --> src/parser.rs:1257:12
[INFO] [stdout]      |
[INFO] [stdout] 1257 |     pub fn diagnostics(&self) -> Option<&DiagnosticBuilder> {
[INFO] [stdout]      |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap`
[INFO] [stdout]     --> src/parser.rs:1265:19
[INFO] [stdout]      |
[INFO] [stdout] 1265 |     pub(crate) fn unwrap(self) -> (T, Option<DiagnosticBuilder>) {
[INFO] [stdout]      |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_wrapped`
[INFO] [stdout]     --> src/parser.rs:1271:8
[INFO] [stdout]      |
[INFO] [stdout] 1271 |     fn to_wrapped(self) -> Result<ParseResult<T>, ParseResult<T>> {
[INFO] [stdout]      |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]    --> src/shared.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn to_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]    --> src/shared.rs:251:5
[INFO] [stdout]     |
[INFO] [stdout] 251 |     Left,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ArgsKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/shared.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug, Copy, Clone, PartialEq)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]    --> src/shared.rs:252:5
[INFO] [stdout]     |
[INFO] [stdout] 252 |     Right,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ArgsKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/shared.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug, Copy, Clone, PartialEq)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_mut`
[INFO] [stdout]    --> src/shared.rs:330:12
[INFO] [stdout]     |
[INFO] [stdout] 330 |     pub fn next_mut(&mut self) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back`
[INFO] [stdout]    --> src/shared.rs:337:12
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn look_back(&self) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back_by`
[INFO] [stdout]    --> src/shared.rs:341:12
[INFO] [stdout]     |
[INFO] [stdout] 341 |     pub fn look_back_by(&self, by: usize) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead`
[INFO] [stdout]    --> src/shared.rs:346:12
[INFO] [stdout]     |
[INFO] [stdout] 346 |     pub fn look_ahead(&self) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead_by`
[INFO] [stdout]    --> src/shared.rs:350:12
[INFO] [stdout]     |
[INFO] [stdout] 350 |     pub fn look_ahead_by(&self, by: usize) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back_mut`
[INFO] [stdout]    --> src/shared.rs:355:12
[INFO] [stdout]     |
[INFO] [stdout] 355 |     pub fn look_back_mut(&mut self) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back_by_mut`
[INFO] [stdout]    --> src/shared.rs:359:12
[INFO] [stdout]     |
[INFO] [stdout] 359 |     pub fn look_back_by_mut(&mut self, by: usize) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead_mut`
[INFO] [stdout]    --> src/shared.rs:364:12
[INFO] [stdout]     |
[INFO] [stdout] 364 |     pub fn look_ahead_mut(&mut self) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead_by_mut`
[INFO] [stdout]    --> src/shared.rs:368:12
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn look_ahead_by_mut(&mut self, by: usize) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MathInterpreter` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `math_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.03s
[INFO] running `Command { std: "docker" "inspect" "03aa5135693ab4c23ab9550980fbaa5458741dff5b4e1cfa97b62a0fd0a0d0aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03aa5135693ab4c23ab9550980fbaa5458741dff5b4e1cfa97b62a0fd0a0d0aa", kill_on_drop: false }`
[INFO] [stdout] 03aa5135693ab4c23ab9550980fbaa5458741dff5b4e1cfa97b62a0fd0a0d0aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 483274a5dcc6758e6e1b784cba8dd03e9326ad2bdb82df0d19324b4b595d2885
[INFO] running `Command { std: "docker" "start" "-a" "483274a5dcc6758e6e1b784cba8dd03e9326ad2bdb82df0d19324b4b595d2885", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling MathInterpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/equation_solver.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn solve_lin_1_arg(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stdout]   |                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rec_eq` is assigned to, but never used
[INFO] [stdout]    --> src/parser.rs:138:17
[INFO] [stdout]     |
[INFO] [stdout] 138 |         let mut rec_eq = NONE;
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_rec_eq` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `rec_eq` is never read
[INFO] [stdout]    --> src/parser.rs:153:29
[INFO] [stdout]     |
[INFO] [stdout] 153 | ...                   rec_eq = token.0;
[INFO] [stdout]     |                       ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `diagnostics`
[INFO] [stdout]   --> src/_lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     diagnostics: DiagnosticsConfig,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `color`
[INFO] [stdout]   --> src/_lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     color: bool,                              // FIXME: Currently unsupported
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `printing_order`
[INFO] [stdout]   --> src/_lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     printing_order: DiagnosticsPrintingOrder, // FIXME: Currently unsupported
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Before`
[INFO] [stdout]   --> src/_lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Before,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Solve`
[INFO] [stdout]   --> src/_lib.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     Solve,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Mode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/_lib.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 | #[derive(Copy, Clone)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Always`
[INFO] [stdout]   --> src/_lib.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     Always,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `ANSMode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/_lib.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 | #[derive(Copy, Clone, Eq, PartialEq)]
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve_lin_1_arg`
[INFO] [stdout]  --> src/equation_solver.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn solve_lin_1_arg(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shrink_lo`
[INFO] [stdout]   --> src/error.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn shrink_lo(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shrink_hi`
[INFO] [stdout]   --> src/error.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn shrink_hi(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expand_lo`
[INFO] [stdout]   --> src/error.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn expand_lo(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `error`
[INFO] [stdout]    --> src/error.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn error(&mut self, error: String) -> &mut Self {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `warn`
[INFO] [stdout]    --> src/error.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn warn(&mut self, warning: String) -> &mut Self {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `suggest_spanned`
[INFO] [stdout]    --> src/error.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn suggest_spanned(&mut self, suggestion: String, span: Span) -> &mut Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_multi_span_string`
[INFO] [stdout]    --> src/error.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Suggestion`
[INFO] [stdout]    --> src/error.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 164 |     Suggestion(String, Span),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `DiagnosticItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/error.rs:160:10
[INFO] [stdout]     |
[INFO] [stdout] 160 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineRecFunc`
[INFO] [stdout]    --> src/parser.rs:751:5
[INFO] [stdout]     |
[INFO] [stdout] 751 |     DefineRecFunc(String, Vec<String>, (usize, usize)), // function name, function arguments, (recursive min idx, recursive min val)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Action` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:747:10
[INFO] [stdout]     |
[INFO] [stdout] 747 | #[derive(Debug, Clone)]
[INFO] [stdout]     |          ^^^^^  ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `kind`
[INFO] [stdout]    --> src/parser.rs:756:12
[INFO] [stdout]     |
[INFO] [stdout] 756 |     pub fn kind(&self) -> ActionKind {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineVar`
[INFO] [stdout]    --> src/parser.rs:768:5
[INFO] [stdout]     |
[INFO] [stdout] 768 |     DefineVar,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineFunc`
[INFO] [stdout]    --> src/parser.rs:769:5
[INFO] [stdout]     |
[INFO] [stdout] 769 |     DefineFunc,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DefineRecFunc`
[INFO] [stdout]    --> src/parser.rs:770:5
[INFO] [stdout]     |
[INFO] [stdout] 770 |     DefineRecFunc,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eval`
[INFO] [stdout]    --> src/parser.rs:771:5
[INFO] [stdout]     |
[INFO] [stdout] 771 |     Eval,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/parser.rs:766:10
[INFO] [stdout]     |
[INFO] [stdout] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tokens_to_string`
[INFO] [stdout]    --> src/parser.rs:968:12
[INFO] [stdout]     |
[INFO] [stdout] 968 |         fn tokens_to_string(tokens: &Vec<Token>) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tokens_to_string_ranged`
[INFO] [stdout]    --> src/parser.rs:976:12
[INFO] [stdout]     |
[INFO] [stdout] 976 |         fn tokens_to_string_ranged(tokens: &Vec<Token>, start: usize, end: usize) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `inner_span`
[INFO] [stdout]     --> src/parser.rs:1084:5
[INFO] [stdout]      |
[INFO] [stdout] 1084 |     inner_span: Span,
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: `Region` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     --> src/parser.rs:1080:10
[INFO] [stdout]      |
[INFO] [stdout] 1080 | #[derive(Debug)]
[INFO] [stdout]      |          ^^^^^
[INFO] [stdout]      = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `replace_in_tokens`
[INFO] [stdout]     --> src/parser.rs:1098:19
[INFO] [stdout]      |
[INFO] [stdout] 1098 |     pub(crate) fn replace_in_tokens(self, tokens: &mut Vec<Token>) {
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_token`
[INFO] [stdout]     --> src/parser.rs:1106:19
[INFO] [stdout]      |
[INFO] [stdout] 1106 |     pub(crate) fn to_token(self, tokens: Vec<Token>) -> Token {
[INFO] [stdout]      |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_inner_tokens`
[INFO] [stdout]     --> src/parser.rs:1110:19
[INFO] [stdout]      |
[INFO] [stdout] 1110 |     pub(crate) fn to_inner_tokens(self, tokens: &Vec<Token>) -> Vec<Token> {
[INFO] [stdout]      |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop_braces`
[INFO] [stdout]     --> src/parser.rs:1118:19
[INFO] [stdout]      |
[INFO] [stdout] 1118 |     pub(crate) fn pop_braces(&mut self, tokens: &mut Vec<Token>) {
[INFO] [stdout]      |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]     --> src/parser.rs:1209:19
[INFO] [stdout]      |
[INFO] [stdout] 1209 |     pub(crate) fn len(&self) -> usize {
[INFO] [stdout]      |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_ok`
[INFO] [stdout]     --> src/parser.rs:1253:19
[INFO] [stdout]      |
[INFO] [stdout] 1253 |     pub(crate) fn new_ok(val: T) -> ParseResult<T> {
[INFO] [stdout]      |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `diagnostics`
[INFO] [stdout]     --> src/parser.rs:1257:12
[INFO] [stdout]      |
[INFO] [stdout] 1257 |     pub fn diagnostics(&self) -> Option<&DiagnosticBuilder> {
[INFO] [stdout]      |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_wrapped`
[INFO] [stdout]     --> src/parser.rs:1271:8
[INFO] [stdout]      |
[INFO] [stdout] 1271 |     fn to_wrapped(self) -> Result<ParseResult<T>, ParseResult<T>> {
[INFO] [stdout]      |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]    --> src/shared.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn to_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]    --> src/shared.rs:251:5
[INFO] [stdout]     |
[INFO] [stdout] 251 |     Left,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ArgsKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/shared.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug, Copy, Clone, PartialEq)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Right`
[INFO] [stdout]    --> src/shared.rs:252:5
[INFO] [stdout]     |
[INFO] [stdout] 252 |     Right,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ArgsKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/shared.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug, Copy, Clone, PartialEq)]
[INFO] [stdout]     |          ^^^^^        ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_mut`
[INFO] [stdout]    --> src/shared.rs:330:12
[INFO] [stdout]     |
[INFO] [stdout] 330 |     pub fn next_mut(&mut self) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back`
[INFO] [stdout]    --> src/shared.rs:337:12
[INFO] [stdout]     |
[INFO] [stdout] 337 |     pub fn look_back(&self) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back_by`
[INFO] [stdout]    --> src/shared.rs:341:12
[INFO] [stdout]     |
[INFO] [stdout] 341 |     pub fn look_back_by(&self, by: usize) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead`
[INFO] [stdout]    --> src/shared.rs:346:12
[INFO] [stdout]     |
[INFO] [stdout] 346 |     pub fn look_ahead(&self) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead_by`
[INFO] [stdout]    --> src/shared.rs:350:12
[INFO] [stdout]     |
[INFO] [stdout] 350 |     pub fn look_ahead_by(&self, by: usize) -> Option<&Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back_mut`
[INFO] [stdout]    --> src/shared.rs:355:12
[INFO] [stdout]     |
[INFO] [stdout] 355 |     pub fn look_back_mut(&mut self) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_back_by_mut`
[INFO] [stdout]    --> src/shared.rs:359:12
[INFO] [stdout]     |
[INFO] [stdout] 359 |     pub fn look_back_by_mut(&mut self, by: usize) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead_mut`
[INFO] [stdout]    --> src/shared.rs:364:12
[INFO] [stdout]     |
[INFO] [stdout] 364 |     pub fn look_ahead_mut(&mut self) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `look_ahead_by_mut`
[INFO] [stdout]    --> src/shared.rs:368:12
[INFO] [stdout]     |
[INFO] [stdout] 368 |     pub fn look_ahead_by_mut(&mut self, by: usize) -> Option<&mut Token> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `MathInterpreter` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `math_interpreter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 48 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `Command { std: "docker" "inspect" "483274a5dcc6758e6e1b784cba8dd03e9326ad2bdb82df0d19324b4b595d2885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "483274a5dcc6758e6e1b784cba8dd03e9326ad2bdb82df0d19324b4b595d2885", kill_on_drop: false }`
[INFO] [stdout] 483274a5dcc6758e6e1b784cba8dd03e9326ad2bdb82df0d19324b4b595d2885
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 99f62e69d85e062c13031448d516fa58936846ad9b924c628bc4685664fa86a3
[INFO] running `Command { std: "docker" "start" "-a" "99f62e69d85e062c13031448d516fa58936846ad9b924c628bc4685664fa86a3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]  --> src/equation_solver.rs:3:24
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve_lin_1_arg(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stderr]   |                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `rec_eq` is assigned to, but never used
[INFO] [stderr]    --> src/parser.rs:138:17
[INFO] [stderr]     |
[INFO] [stderr] 138 |         let mut rec_eq = NONE;
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_rec_eq` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `rec_eq` is never read
[INFO] [stderr]    --> src/parser.rs:153:29
[INFO] [stderr]     |
[INFO] [stderr] 153 | ...                   rec_eq = token.0;
[INFO] [stderr]     |                       ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `diagnostics`
[INFO] [stderr]   --> src/_lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     diagnostics: DiagnosticsConfig,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `color`
[INFO] [stderr]   --> src/_lib.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     color: bool,                              // FIXME: Currently unsupported
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `printing_order`
[INFO] [stderr]   --> src/_lib.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     printing_order: DiagnosticsPrintingOrder, // FIXME: Currently unsupported
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Before`
[INFO] [stderr]   --> src/_lib.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     Before,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Solve`
[INFO] [stderr]   --> src/_lib.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     Solve,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `Mode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/_lib.rs:42:16
[INFO] [stderr]    |
[INFO] [stderr] 42 | #[derive(Copy, Clone)]
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Always`
[INFO] [stderr]   --> src/_lib.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     Always,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `ANSMode` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/_lib.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 | #[derive(Copy, Clone, Eq, PartialEq)]
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_lin_1_arg`
[INFO] [stderr]  --> src/equation_solver.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve_lin_1_arg(tokens: Vec<Token>) -> Vec<Token> {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `shrink_lo`
[INFO] [stderr]   --> src/error.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn shrink_lo(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `shrink_hi`
[INFO] [stderr]   --> src/error.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn shrink_hi(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expand_lo`
[INFO] [stderr]   --> src/error.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub fn expand_lo(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `error`
[INFO] [stderr]    --> src/error.rs:110:12
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn error(&mut self, error: String) -> &mut Self {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `warn`
[INFO] [stderr]    --> src/error.rs:120:12
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn warn(&mut self, warning: String) -> &mut Self {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `suggest_spanned`
[INFO] [stderr]    --> src/error.rs:129:12
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn suggest_spanned(&mut self, suggestion: String, span: Span) -> &mut Self {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `build_multi_span_string`
[INFO] [stderr]    --> src/error.rs:139:8
[INFO] [stderr]     |
[INFO] [stderr] 139 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Suggestion`
[INFO] [stderr]    --> src/error.rs:164:5
[INFO] [stderr]     |
[INFO] [stderr] 164 |     Suggestion(String, Span),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `DiagnosticItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/error.rs:160:10
[INFO] [stderr]     |
[INFO] [stderr] 160 | #[derive(Debug)]
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DefineRecFunc`
[INFO] [stderr]    --> src/parser.rs:751:5
[INFO] [stderr]     |
[INFO] [stderr] 751 |     DefineRecFunc(String, Vec<String>, (usize, usize)), // function name, function arguments, (recursive min idx, recursive min val)
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `Action` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/parser.rs:747:10
[INFO] [stderr]     |
[INFO] [stderr] 747 | #[derive(Debug, Clone)]
[INFO] [stderr]     |          ^^^^^  ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `kind`
[INFO] [stderr]    --> src/parser.rs:756:12
[INFO] [stderr]     |
[INFO] [stderr] 756 |     pub fn kind(&self) -> ActionKind {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DefineVar`
[INFO] [stderr]    --> src/parser.rs:768:5
[INFO] [stderr]     |
[INFO] [stderr] 768 |     DefineVar,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/parser.rs:766:10
[INFO] [stderr]     |
[INFO] [stderr] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stderr]     |          ^^^^^        ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DefineFunc`
[INFO] [stderr]    --> src/parser.rs:769:5
[INFO] [stderr]     |
[INFO] [stderr] 769 |     DefineFunc,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/parser.rs:766:10
[INFO] [stderr]     |
[INFO] [stderr] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stderr]     |          ^^^^^        ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DefineRecFunc`
[INFO] [stderr]    --> src/parser.rs:770:5
[INFO] [stderr]     |
[INFO] [stderr] 770 |     DefineRecFunc,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/parser.rs:766:10
[INFO] [stderr]     |
[INFO] [stderr] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stderr]     |          ^^^^^        ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Eval`
[INFO] [stderr]    --> src/parser.rs:771:5
[INFO] [stderr]     |
[INFO] [stderr] 771 |     Eval,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ActionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/parser.rs:766:10
[INFO] [stderr]     |
[INFO] [stderr] 766 | #[derive(Debug, Copy, Clone)]
[INFO] [stderr]     |          ^^^^^        ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tokens_to_string`
[INFO] [stderr]    --> src/parser.rs:968:12
[INFO] [stderr]     |
[INFO] [stderr] 968 |         fn tokens_to_string(tokens: &Vec<Token>) -> String {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tokens_to_string_ranged`
[INFO] [stderr]    --> src/parser.rs:976:12
[INFO] [stderr]     |
[INFO] [stderr] 976 |         fn tokens_to_string_ranged(tokens: &Vec<Token>, start: usize, end: usize) -> String {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `inner_span`
[INFO] [stderr]     --> src/parser.rs:1084:5
[INFO] [stderr]      |
[INFO] [stderr] 1084 |     inner_span: Span,
[INFO] [stderr]      |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr] note: `Region` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     --> src/parser.rs:1080:10
[INFO] [stderr]      |
[INFO] [stderr] 1080 | #[derive(Debug)]
[INFO] [stderr]      |          ^^^^^
[INFO] [stderr]      = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `replace_in_tokens`
[INFO] [stderr]     --> src/parser.rs:1098:19
[INFO] [stderr]      |
[INFO] [stderr] 1098 |     pub(crate) fn replace_in_tokens(self, tokens: &mut Vec<Token>) {
[INFO] [stderr]      |                   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_token`
[INFO] [stderr]     --> src/parser.rs:1106:19
[INFO] [stderr]      |
[INFO] [stderr] 1106 |     pub(crate) fn to_token(self, tokens: Vec<Token>) -> Token {
[INFO] [stderr]      |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_inner_tokens`
[INFO] [stderr]     --> src/parser.rs:1110:19
[INFO] [stderr]      |
[INFO] [stderr] 1110 |     pub(crate) fn to_inner_tokens(self, tokens: &Vec<Token>) -> Vec<Token> {
[INFO] [stderr]      |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop_braces`
[INFO] [stderr]     --> src/parser.rs:1118:19
[INFO] [stderr]      |
[INFO] [stderr] 1118 |     pub(crate) fn pop_braces(&mut self, tokens: &mut Vec<Token>) {
[INFO] [stderr]      |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `len`
[INFO] [stderr]     --> src/parser.rs:1209:19
[INFO] [stderr]      |
[INFO] [stderr] 1209 |     pub(crate) fn len(&self) -> usize {
[INFO] [stderr]      |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_ok`
[INFO] [stderr]     --> src/parser.rs:1253:19
[INFO] [stderr]      |
[INFO] [stderr] 1253 |     pub(crate) fn new_ok(val: T) -> ParseResult<T> {
[INFO] [stderr]      |                   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `diagnostics`
[INFO] [stderr]     --> src/parser.rs:1257:12
[INFO] [stderr]      |
[INFO] [stderr] 1257 |     pub fn diagnostics(&self) -> Option<&DiagnosticBuilder> {
[INFO] [stderr]      |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_wrapped`
[INFO] [stderr]     --> src/parser.rs:1271:8
[INFO] [stderr]      |
[INFO] [stderr] 1271 |     fn to_wrapped(self) -> Result<ParseResult<T>, ParseResult<T>> {
[INFO] [stderr]      |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_string`
[INFO] [stderr]    --> src/shared.rs:114:12
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn to_string(&self) -> String {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/shared.rs:251:5
[INFO] [stderr]     |
[INFO] [stderr] 251 |     Left,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ArgsKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/shared.rs:248:10
[INFO] [stderr]     |
[INFO] [stderr] 248 | #[derive(Debug, Copy, Clone, PartialEq)]
[INFO] [stderr]     |          ^^^^^        ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/shared.rs:252:5
[INFO] [stderr]     |
[INFO] [stderr] 252 |     Right,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `ArgsKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/shared.rs:248:10
[INFO] [stderr]     |
[INFO] [stderr] 248 | #[derive(Debug, Copy, Clone, PartialEq)]
[INFO] [stderr]     |          ^^^^^        ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next_mut`
[INFO] [stderr]    --> src/shared.rs:330:12
[INFO] [stderr]     |
[INFO] [stderr] 330 |     pub fn next_mut(&mut self) -> Option<&mut Token> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_back`
[INFO] [stderr]    --> src/shared.rs:337:12
[INFO] [stderr]     |
[INFO] [stderr] 337 |     pub fn look_back(&self) -> Option<&Token> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_back_by`
[INFO] [stderr]    --> src/shared.rs:341:12
[INFO] [stderr]     |
[INFO] [stderr] 341 |     pub fn look_back_by(&self, by: usize) -> Option<&Token> {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_ahead`
[INFO] [stderr]    --> src/shared.rs:346:12
[INFO] [stderr]     |
[INFO] [stderr] 346 |     pub fn look_ahead(&self) -> Option<&Token> {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_ahead_by`
[INFO] [stderr]    --> src/shared.rs:350:12
[INFO] [stderr]     |
[INFO] [stderr] 350 |     pub fn look_ahead_by(&self, by: usize) -> Option<&Token> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_back_mut`
[INFO] [stderr]    --> src/shared.rs:355:12
[INFO] [stderr]     |
[INFO] [stderr] 355 |     pub fn look_back_mut(&mut self) -> Option<&mut Token> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_back_by_mut`
[INFO] [stderr]    --> src/shared.rs:359:12
[INFO] [stderr]     |
[INFO] [stderr] 359 |     pub fn look_back_by_mut(&mut self, by: usize) -> Option<&mut Token> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_ahead_mut`
[INFO] [stderr]    --> src/shared.rs:364:12
[INFO] [stderr]     |
[INFO] [stderr] 364 |     pub fn look_ahead_mut(&mut self) -> Option<&mut Token> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `look_ahead_by_mut`
[INFO] [stderr]    --> src/shared.rs:368:12
[INFO] [stderr]     |
[INFO] [stderr] 368 |     pub fn look_ahead_by_mut(&mut self, by: usize) -> Option<&mut Token> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `MathInterpreter` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `math_interpreter`
[INFO] [stderr] 
[INFO] [stderr] warning: `MathInterpreter` (bin "MathInterpreter" test) generated 48 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/MathInterpreter-3ed8b889e391e293)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test equation_simplifier::test ... ok
[INFO] [stdout] test parser::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "99f62e69d85e062c13031448d516fa58936846ad9b924c628bc4685664fa86a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99f62e69d85e062c13031448d516fa58936846ad9b924c628bc4685664fa86a3", kill_on_drop: false }`
[INFO] [stdout] 99f62e69d85e062c13031448d516fa58936846ad9b924c628bc4685664fa86a3