[INFO] cloning repository https://github.com/Mitra98t/x-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mitra98t/x-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitra98t%2Fx-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitra98t%2Fx-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6498a5d41bc23a1a8b014aa2ca060abc376699b
[INFO] checking Mitra98t/x-lang against try#51000a35bc99aeffdc092bf2226ab562eedb9eff for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitra98t%2Fx-lang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mitra98t/x-lang on toolchain 51000a35bc99aeffdc092bf2226ab562eedb9eff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mitra98t/x-lang
[INFO] finished tweaking git repo https://github.com/Mitra98t/x-lang
[INFO] tweaked toml for git repo https://github.com/Mitra98t/x-lang written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Mitra98t/x-lang 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" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking Mitra98t/x-lang against try#51000a35bc99aeffdc092bf2226ab562eedb9eff for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMitra98t%2Fx-lang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mitra98t/x-lang on toolchain 51000a35bc99aeffdc092bf2226ab562eedb9eff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mitra98t/x-lang
[INFO] finished tweaking git repo https://github.com/Mitra98t/x-lang
[INFO] tweaked toml for git repo https://github.com/Mitra98t/x-lang written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Mitra98t/x-lang 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" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5dac3bbba9b316f20b6c15a0bd7a2f149138f1b64ff29242217b1caf6c3b743
[INFO] running `Command { std: "docker" "start" "-a" "f5dac3bbba9b316f20b6c15a0bd7a2f149138f1b64ff29242217b1caf6c3b743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5dac3bbba9b316f20b6c15a0bd7a2f149138f1b64ff29242217b1caf6c3b743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5dac3bbba9b316f20b6c15a0bd7a2f149138f1b64ff29242217b1caf6c3b743", kill_on_drop: false }`
[INFO] [stdout] f5dac3bbba9b316f20b6c15a0bd7a2f149138f1b64ff29242217b1caf6c3b743
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+51000a35bc99aeffdc092bf2226ab562eedb9eff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 607677cdea1cda6a90549035787c64082a9d886e4b0bd7df2abd430cf71f17a7
[INFO] running `Command { std: "docker" "start" "-a" "607677cdea1cda6a90549035787c64082a9d886e4b0bd7df2abd430cf71f17a7", kill_on_drop: false }`
[INFO] [stderr]     Checking x-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/expressions.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Call(Box<Expression>, SourceLocation, Vec<Expression>),
[INFO] [stdout]    |     ----                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 -     Call(Box<Expression>, SourceLocation, Vec<Expression>),
[INFO] [stdout] 10 +     Call(Box<Expression>, (), Vec<Expression>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/expressions.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct SourceLocation {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 15 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 16 |     pub column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SourceLocation` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Double` and `String` are never constructed
[INFO] [stdout]   --> src/expressions.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub enum Literal {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] 27 |     Integer(i64),
[INFO] [stdout] 28 |     Double(f64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     String(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Literal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/expressions.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct UnaryOp {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 37 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 38 |     pub column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnaryOp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/expressions.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct BinaryOp {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 50 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 51 |     pub column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BinaryOp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/expressions.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     Return(SourceLocation, Option<Expression>),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Statement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 78 -     Return(SourceLocation, Option<Expression>),
[INFO] [stdout] 78 +     Return((), Option<Expression>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]    --> src/expressions.rs:99:9
[INFO] [stdout]     |
[INFO] [stdout] 98  | pub struct Symbol {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 99  |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 100 |     pub column: usize,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Symbol` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `String` is never constructed
[INFO] [stdout]   --> src/lexer.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub enum Literal {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 57 |     String(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind`, `line`, and `column` are never read
[INFO] [stdout]   --> src/parser.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     MaxParamsExceeded {
[INFO] [stdout]    |     ----------------- fields in this variant
[INFO] [stdout] 25 |         kind: FunctionKind,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 26 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 27 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/parser.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     ReturnNotInFun {
[INFO] [stdout]    |     -------------- fields in this variant
[INFO] [stdout] 30 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 31 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/parser.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     TooManyArguments {
[INFO] [stdout]    |     ---------------- fields in this variant
[INFO] [stdout] 38 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 39 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token_type`, `line`, and `column` are never read
[INFO] [stdout]   --> src/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     InvalidTokenInUnaryOp {
[INFO] [stdout]    |     --------------------- fields in this variant
[INFO] [stdout] 47 |         token_type: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 48 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 49 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token_type`, `line`, and `column` are never read
[INFO] [stdout]   --> src/parser.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     InvalidTokenInBinaryOp {
[INFO] [stdout]    |     ---------------------- fields in this variant
[INFO] [stdout] 52 |         token_type: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 53 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 54 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ExpectedExpression` is never constructed
[INFO] [stdout]   --> src/parser.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum Error {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 41 |     ExpectedExpression {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Lambda` is never constructed
[INFO] [stdout]   --> src/parser.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub enum FunctionKind {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 97 |     Lambda,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunctionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/expressions.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Call(Box<Expression>, SourceLocation, Vec<Expression>),
[INFO] [stdout]    |     ----                  ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` 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] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 10 -     Call(Box<Expression>, SourceLocation, Vec<Expression>),
[INFO] [stdout] 10 +     Call(Box<Expression>, (), Vec<Expression>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/expressions.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct SourceLocation {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 15 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 16 |     pub column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SourceLocation` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Double` and `String` are never constructed
[INFO] [stdout]   --> src/expressions.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub enum Literal {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] 27 |     Integer(i64),
[INFO] [stdout] 28 |     Double(f64),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 29 |     String(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Literal` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/expressions.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct UnaryOp {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 37 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 38 |     pub column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `UnaryOp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/expressions.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct BinaryOp {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 50 |     pub line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 51 |     pub column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BinaryOp` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/expressions.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     Return(SourceLocation, Option<Expression>),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Statement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 78 -     Return(SourceLocation, Option<Expression>),
[INFO] [stdout] 78 +     Return((), Option<Expression>),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]    --> src/expressions.rs:99:9
[INFO] [stdout]     |
[INFO] [stdout] 98  | pub struct Symbol {
[INFO] [stdout]     |            ------ fields in this struct
[INFO] [stdout] 99  |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 100 |     pub column: usize,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Symbol` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `String` is never constructed
[INFO] [stdout]   --> src/lexer.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub enum Literal {
[INFO] [stdout]    |          ------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 57 |     String(String),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind`, `line`, and `column` are never read
[INFO] [stdout]   --> src/parser.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     MaxParamsExceeded {
[INFO] [stdout]    |     ----------------- fields in this variant
[INFO] [stdout] 25 |         kind: FunctionKind,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 26 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 27 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/parser.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     ReturnNotInFun {
[INFO] [stdout]    |     -------------- fields in this variant
[INFO] [stdout] 30 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 31 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `line` and `column` are never read
[INFO] [stdout]   --> src/parser.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     TooManyArguments {
[INFO] [stdout]    |     ---------------- fields in this variant
[INFO] [stdout] 38 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 39 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token_type`, `line`, and `column` are never read
[INFO] [stdout]   --> src/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |     InvalidTokenInUnaryOp {
[INFO] [stdout]    |     --------------------- fields in this variant
[INFO] [stdout] 47 |         token_type: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 48 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 49 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `token_type`, `line`, and `column` are never read
[INFO] [stdout]   --> src/parser.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     InvalidTokenInBinaryOp {
[INFO] [stdout]    |     ---------------------- fields in this variant
[INFO] [stdout] 52 |         token_type: TokenType,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 53 |         line: usize,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 54 |         column: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ExpectedExpression` is never constructed
[INFO] [stdout]   --> src/parser.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum Error {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 41 |     ExpectedExpression {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Lambda` is never constructed
[INFO] [stdout]   --> src/parser.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 94 | pub enum FunctionKind {
[INFO] [stdout]    |          ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 97 |     Lambda,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunctionKind` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "607677cdea1cda6a90549035787c64082a9d886e4b0bd7df2abd430cf71f17a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "607677cdea1cda6a90549035787c64082a9d886e4b0bd7df2abd430cf71f17a7", kill_on_drop: false }`
[INFO] [stdout] 607677cdea1cda6a90549035787c64082a9d886e4b0bd7df2abd430cf71f17a7