[INFO] cloning repository https://github.com/A1cey/clmath
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/A1cey/clmath" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FA1cey%2Fclmath", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FA1cey%2Fclmath'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 392f31961a978630daed2190d94b92f00ccde6d8
[INFO] checking A1cey/clmath against master#336209eef13882bd1e211b24779584cb7ef911eb for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FA1cey%2Fclmath" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/A1cey/clmath on toolchain 336209eef13882bd1e211b24779584cb7ef911eb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/A1cey/clmath
[INFO] finished tweaking git repo https://github.com/A1cey/clmath
[INFO] tweaked toml for git repo https://github.com/A1cey/clmath written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/A1cey/clmath 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" "+336209eef13882bd1e211b24779584cb7ef911eb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.37
[INFO] [stderr]   Downloaded syn v2.0.77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0481e076c0408a47966442fe5739eb803204a0da9660cc070d708f048bac0b9
[INFO] running `Command { std: "docker" "start" "-a" "b0481e076c0408a47966442fe5739eb803204a0da9660cc070d708f048bac0b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0481e076c0408a47966442fe5739eb803204a0da9660cc070d708f048bac0b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0481e076c0408a47966442fe5739eb803204a0da9660cc070d708f048bac0b9", kill_on_drop: false }`
[INFO] [stdout] b0481e076c0408a47966442fe5739eb803204a0da9660cc070d708f048bac0b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+336209eef13882bd1e211b24779584cb7ef911eb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cfb3009d279a05d96b7c8096ccf46e29e5d07ced311699050dfca2f863368ee
[INFO] running `Command { std: "docker" "start" "-a" "1cfb3009d279a05d96b7c8096ccf46e29e5d07ced311699050dfca2f863368ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]     Checking clmath v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/error.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/error.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Parser` and `Func` are never constructed
[INFO] [stdout]   --> src/error.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum ErrorType {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 35 |     Parser(ParserError),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 36 |     Func(FunctionError),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidInputIndexing` is never constructed
[INFO] [stdout]   --> src/error.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub enum TokenizerError {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] 46 |     InvalidInputIndexing,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenizerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ParserError` is never constructed
[INFO] [stdout]   --> src/error.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub enum ParserError {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 56 |     ParserError,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParserError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `FactorialError`, `DivisionByZero`, `OverflowInf`, and `UnderflowInf` are never constructed
[INFO] [stdout]   --> src/error.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub enum FunctionError {
[INFO] [stdout]    |          ------------- variants in this enum
[INFO] [stdout] 61 |     FactorialError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 62 |     DivisionByZero,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 63 |     OverflowInf,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 64 |     UnderflowInf,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunctionError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `less_than` is never used
[INFO] [stdout]   --> src/functions.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn less_than(a: f64, b: f64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greater_than` is never used
[INFO] [stdout]   --> src/functions.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn greater_than(a: f64, b: f64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `absolute` is never used
[INFO] [stdout]   --> src/functions.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn absolute(num: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `minimum` is never used
[INFO] [stdout]   --> src/functions.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn minimum(a: f64, b: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maximum` is never used
[INFO] [stdout]   --> src/functions.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn maximum(a: f64, b: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factorial` is never used
[INFO] [stdout]   --> src/functions.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub fn factorial(num: u32) -> Result<u32, Error> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `addition` is never used
[INFO] [stdout]    --> src/functions.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn addition(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subtraction` is never used
[INFO] [stdout]    --> src/functions.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn subtraction(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modulo` is never used
[INFO] [stdout]    --> src/functions.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub fn modulo(a: f64, n: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modulo_euclid` is never used
[INFO] [stdout]    --> src/functions.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn modulo_euclid(a: f64, n: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplication` is never used
[INFO] [stdout]    --> src/functions.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub fn multiplication(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division` is never used
[INFO] [stdout]    --> src/functions.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | pub fn division(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_error` is never used
[INFO] [stdout]    --> src/functions.rs:195:4
[INFO] [stdout]     |
[INFO] [stdout] 195 | fn create_error(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExpressionOption` is never used
[INFO] [stdout]  --> src/parser.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum ExpressionOption {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Expression` is never constructed
[INFO] [stdout]   --> src/parser.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Expression {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]   --> src/parser.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Number {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Variable` is never constructed
[INFO] [stdout]   --> src/parser.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Variable {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Function` is never constructed
[INFO] [stdout]   --> src/parser.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Function {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `value` are never used
[INFO] [stdout]   --> src/tokenizer.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Variable {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn name(&self) -> &String {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn value(&self) -> &Option<f64> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Parser` is never constructed
[INFO] [stdout]   --> src/error.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub enum ErrorType {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 35 |     Parser(ParserError),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidInputIndexing` is never constructed
[INFO] [stdout]   --> src/error.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub enum TokenizerError {
[INFO] [stdout]    |          -------------- variant in this enum
[INFO] [stdout] 46 |     InvalidInputIndexing,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenizerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ParserError` is never constructed
[INFO] [stdout]   --> src/error.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub enum ParserError {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 56 |     ParserError,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParserError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `DivisionByZero` is never constructed
[INFO] [stdout]   --> src/error.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub enum FunctionError {
[INFO] [stdout]    |          ------------- variant in this enum
[INFO] [stdout] 61 |     FactorialError,
[INFO] [stdout] 62 |     DivisionByZero,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunctionError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `less_than` is never used
[INFO] [stdout]   --> src/functions.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn less_than(a: f64, b: f64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `greater_than` is never used
[INFO] [stdout]   --> src/functions.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn greater_than(a: f64, b: f64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `absolute` is never used
[INFO] [stdout]   --> src/functions.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub fn absolute(num: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `minimum` is never used
[INFO] [stdout]   --> src/functions.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn minimum(a: f64, b: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maximum` is never used
[INFO] [stdout]   --> src/functions.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub fn maximum(a: f64, b: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subtraction` is never used
[INFO] [stdout]    --> src/functions.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | pub fn subtraction(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modulo` is never used
[INFO] [stdout]    --> src/functions.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub fn modulo(a: f64, n: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `modulo_euclid` is never used
[INFO] [stdout]    --> src/functions.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn modulo_euclid(a: f64, n: f64) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multiplication` is never used
[INFO] [stdout]    --> src/functions.rs:152:8
[INFO] [stdout]     |
[INFO] [stdout] 152 | pub fn multiplication(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `division` is never used
[INFO] [stdout]    --> src/functions.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 | pub fn division(a: f64, b: f64) -> Result<f64, Error> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExpressionOption` is never used
[INFO] [stdout]  --> src/parser.rs:9:6
[INFO] [stdout]   |
[INFO] [stdout] 9 | enum ExpressionOption {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Expression` is never constructed
[INFO] [stdout]   --> src/parser.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Expression {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Number` is never constructed
[INFO] [stdout]   --> src/parser.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Number {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Variable` is never constructed
[INFO] [stdout]   --> src/parser.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Variable {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Function` is never constructed
[INFO] [stdout]   --> src/parser.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Function {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `value` are never used
[INFO] [stdout]   --> src/tokenizer.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Variable {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn name(&self) -> &String {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn value(&self) -> &Option<f64> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.84s
[INFO] running `Command { std: "docker" "inspect" "1cfb3009d279a05d96b7c8096ccf46e29e5d07ced311699050dfca2f863368ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cfb3009d279a05d96b7c8096ccf46e29e5d07ced311699050dfca2f863368ee", kill_on_drop: false }`
[INFO] [stdout] 1cfb3009d279a05d96b7c8096ccf46e29e5d07ced311699050dfca2f863368ee