[INFO] cloning repository https://github.com/terrarier2111/TeflonLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/terrarier2111/TeflonLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FTeflonLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FTeflonLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0fc03d14769412b840f285002c46ab774b15bcd
[INFO] checking terrarier2111/TeflonLang against master#83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5 for pr-128425
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FTeflonLang" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/terrarier2111/TeflonLang on toolchain 83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/terrarier2111/TeflonLang
[INFO] finished tweaking git repo https://github.com/terrarier2111/TeflonLang
[INFO] tweaked toml for git repo https://github.com/terrarier2111/TeflonLang written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/terrarier2111/TeflonLang 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" "+83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking terrarier2111/TeflonLang against try#063c08dd8db6ff113bb809c130456f1781abe72c for pr-128425
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fterrarier2111%2FTeflonLang" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/terrarier2111/TeflonLang on toolchain 063c08dd8db6ff113bb809c130456f1781abe72c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+063c08dd8db6ff113bb809c130456f1781abe72c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/terrarier2111/TeflonLang
[INFO] finished tweaking git repo https://github.com/terrarier2111/TeflonLang
[INFO] tweaked toml for git repo https://github.com/terrarier2111/TeflonLang written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/terrarier2111/TeflonLang 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" "+063c08dd8db6ff113bb809c130456f1781abe72c" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+063c08dd8db6ff113bb809c130456f1781abe72c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d4221a79f3568c682a8530d068e63176d103ef255cabc4a62d480dcee2e8eff
[INFO] running `Command { std: "docker" "start" "-a" "4d4221a79f3568c682a8530d068e63176d103ef255cabc4a62d480dcee2e8eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d4221a79f3568c682a8530d068e63176d103ef255cabc4a62d480dcee2e8eff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d4221a79f3568c682a8530d068e63176d103ef255cabc4a62d480dcee2e8eff", kill_on_drop: false }`
[INFO] [stdout] 4d4221a79f3568c682a8530d068e63176d103ef255cabc4a62d480dcee2e8eff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+063c08dd8db6ff113bb809c130456f1781abe72c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0c6ad409ae5cf5877de52fc6a1aa2bf7e5990574f07c935347bde47f752e90e
[INFO] running `Command { std: "docker" "start" "-a" "d0c6ad409ae5cf5877de52fc6a1aa2bf7e5990574f07c935347bde47f752e90e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking TefflonLang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::lexer::token::Token`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::lexer::token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ItemKind` and `StmtKind`
[INFO] [stdout]   --> src/main.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::parser::ast::{Crate, ItemKind, StmtKind};
[INFO] [stdout]    |                                 ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DEFAULT_PATH` and `Ty`
[INFO] [stdout]   --> src/main.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::tyck::{DEFAULT_PATH, Ty, tyck_item};
[INFO] [stdout]    |                   ^^^^^^^^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/diagnostics/builder.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/diagnostics/builder.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arguments`
[INFO] [stdout]  --> src/diagnostics/span.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Arguments, Debug, Display, Formatter, Write};
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]   --> src/lexer/mod.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (('a'..='z') | ('A'..='Z') | '_') => {
[INFO] [stdout]    |             ^                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 73 -             (('a'..='z') | ('A'..='Z') | '_') => {
[INFO] [stdout] 73 +             ('a'..='z') | ('A'..='Z') | '_' => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]    --> src/lexer/mod.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |             ('\r' | '\n') => {} // this is a noop
[INFO] [stdout]     |             ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -             ('\r' | '\n') => {} // this is a noop
[INFO] [stdout] 195 +             '\r' | '\n' => {} // this is a noop
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::diagnostics::span::Span`
[INFO] [stdout]  --> src/parser/ast.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::diagnostics::span::Span;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Adt`, `DEFAULT_PATH`, and `EMPTY`
[INFO] [stdout]  --> src/parser/ast.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::tyck::{Adt, DEFAULT_PATH, EMPTY, Environment, TyCtx};
[INFO] [stdout]   |                   ^^^  ^^^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer`
[INFO] [stdout]  --> src/parser/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::lexer;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/parser/parser.rs:9:83
[INFO] [stdout]   |
[INFO] [stdout] 9 |     LDecAssign, Lifetime, LocalAssign, NumberType, OwnedTy, RefTy, StaticValNode, Stmt, StmtKind,
[INFO] [stdout]   |                                                                                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/parser/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::token::Token`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::lexer::token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ItemKind` and `StmtKind`
[INFO] [stdout]   --> src/main.rs:14:33
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::parser::ast::{Crate, ItemKind, StmtKind};
[INFO] [stdout]    |                                 ^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DEFAULT_PATH` and `Ty`
[INFO] [stdout]   --> src/main.rs:15:19
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::tyck::{DEFAULT_PATH, Ty, tyck_item};
[INFO] [stdout]    |                   ^^^^^^^^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/diagnostics/builder.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/diagnostics/builder.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arguments`
[INFO] [stdout]  --> src/diagnostics/span.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Arguments, Debug, Display, Formatter, Write};
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]   --> src/lexer/mod.rs:73:13
[INFO] [stdout]    |
[INFO] [stdout] 73 |             (('a'..='z') | ('A'..='Z') | '_') => {
[INFO] [stdout]    |             ^                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 73 -             (('a'..='z') | ('A'..='Z') | '_') => {
[INFO] [stdout] 73 +             ('a'..='z') | ('A'..='Z') | '_' => {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]    --> src/lexer/mod.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |             ('\r' | '\n') => {} // this is a noop
[INFO] [stdout]     |             ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 195 -             ('\r' | '\n') => {} // this is a noop
[INFO] [stdout] 195 +             '\r' | '\n' => {} // this is a noop
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::diagnostics::span::Span`
[INFO] [stdout]  --> src/parser/ast.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::diagnostics::span::Span;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Adt`, `DEFAULT_PATH`, and `EMPTY`
[INFO] [stdout]  --> src/parser/ast.rs:4:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::tyck::{Adt, DEFAULT_PATH, EMPTY, Environment, TyCtx};
[INFO] [stdout]   |                   ^^^  ^^^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stmt`
[INFO] [stdout]  --> src/parser/parser.rs:9:83
[INFO] [stdout]   |
[INFO] [stdout] 9 |     LDecAssign, Lifetime, LocalAssign, NumberType, OwnedTy, RefTy, StaticValNode, Stmt, StmtKind,
[INFO] [stdout]   |                                                                                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/diagnostics/span.rs:2:54
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Arguments, Debug, Display, Formatter, Write};
[INFO] [stdout]   |                                                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/diagnostics/builder.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn build(/*mut */ mut self) -> &'sup mut DiagnosticBuilder {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/diagnostics/span.rs:2:54
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Arguments, Debug, Display, Formatter, Write};
[INFO] [stdout]   |                                                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/diagnostics/builder.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn build(/*mut */ mut self) -> &'sup mut DiagnosticBuilder {
[INFO] [stdout]    |                           ----^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut ret = Arc::new(InsertOnlyConcVec::new(files.len()));
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut diagnostics_builder = DiagnosticBuilder::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer/mod.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut ret = Arc::new(InsertOnlyConcVec::new(files.len()));
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer/mod.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut diagnostics_builder = DiagnosticBuilder::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/parser/parser.rs:1032:9
[INFO] [stdout]      |
[INFO] [stdout] 1032 |     let mut token_stream = TokenStream::new(lexed.clone());
[INFO] [stdout]      |         ----^^^^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/token_stream.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(mut tokens: Vec<Token>) -> Self {
[INFO] [stdout]    |                ----^^^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tait`
[INFO] [stdout]   --> src/traitsolver/mod.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn insert_impl(&mut self, tait: &Ty, obligations: Vec<Ty>) {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_tait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obligations`
[INFO] [stdout]   --> src/traitsolver/mod.rs:28:42
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn insert_impl(&mut self, tait: &Ty, obligations: Vec<Ty>) {
[INFO] [stdout]    |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_obligations`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s_impl`
[INFO] [stdout]    --> src/tyck/mod.rs:167:34
[INFO] [stdout]     |
[INFO] [stdout] 167 |             ItemKind::StructImpl(s_impl) => {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_impl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s_impl`
[INFO] [stdout]    --> src/tyck/mod.rs:201:34
[INFO] [stdout]     |
[INFO] [stdout] 201 |             ItemKind::StructImpl(s_impl) => {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_impl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/token_stream.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(mut tokens: Vec<Token>) -> Self {
[INFO] [stdout]    |                ----^^^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tait`
[INFO] [stdout]   --> src/traitsolver/mod.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn insert_impl(&mut self, tait: &Ty, obligations: Vec<Ty>) {
[INFO] [stdout]    |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_tait`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obligations`
[INFO] [stdout]   --> src/traitsolver/mod.rs:28:42
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn insert_impl(&mut self, tait: &Ty, obligations: Vec<Ty>) {
[INFO] [stdout]    |                                          ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_obligations`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tyck/mod.rs:400:13
[INFO] [stdout]     |
[INFO] [stdout] 400 |         let mut scope = self.scopes.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s_impl`
[INFO] [stdout]    --> src/tyck/mod.rs:167:34
[INFO] [stdout]     |
[INFO] [stdout] 167 |             ItemKind::StructImpl(s_impl) => {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_impl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tyck/mod.rs:425:13
[INFO] [stdout]     |
[INFO] [stdout] 425 |         let mut scope = self.scopes.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s_impl`
[INFO] [stdout]    --> src/tyck/mod.rs:201:34
[INFO] [stdout]     |
[INFO] [stdout] 201 |             ItemKind::StructImpl(s_impl) => {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_s_impl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tyck/mod.rs:400:13
[INFO] [stdout]     |
[INFO] [stdout] 400 |         let mut scope = self.scopes.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tyck/mod.rs:425:13
[INFO] [stdout]     |
[INFO] [stdout] 425 |         let mut scope = self.scopes.last_mut().unwrap();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diagnostics`
[INFO] [stdout]   --> src/main.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut diagnostics = DiagnosticBuilder::new();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_diagnostics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut input = input("Please insert a path to a source file: ".to_owned()).unwrap();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut token_stream = TokenStream::new(lexed);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut diagnostics = DiagnosticBuilder::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut ret = Arc::new(InsertOnlyConcVec::new(files.len()));
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diagnostics`
[INFO] [stdout]   --> src/main.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut diagnostics = DiagnosticBuilder::new();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_diagnostics`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let mut input = input("Please insert a path to a source file: ".to_owned()).unwrap();
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut token_stream = TokenStream::new(lexed);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_input_and_err_with_span`, `from_input_and_err`, and `build_multi_span_string` are never used
[INFO] [stdout]   --> src/diagnostics/builder.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<'sup> DiagnosticSubBuilder<'sup> {
[INFO] [stdout]    | ------------------------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub(crate) fn from_input_and_err_with_span(
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub(crate) fn from_input_and_err(
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut diagnostics = DiagnosticBuilder::new();
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `build_span_string` and `build_multi_span_string` are never used
[INFO] [stdout]    --> src/diagnostics/builder.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl DiagnosticPart {
[INFO] [stdout]     | ------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 131 |     fn build_span_string(span: &Span) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex_many` is never used
[INFO] [stdout]   --> src/lexer/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn lex_many(mut files: Vec<String>) -> Result<Vec<Vec<Token>>, DiagnosticBuilder> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Underscore` is never constructed
[INFO] [stdout]   --> src/lexer/token.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub enum TokenType {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 27 |     Underscore,    // _
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/lexer/token.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |     StrLit(Span, String),
[INFO] [stdout]    |     ------       ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are 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] 41 |     StrLit(Span, ()),
[INFO] [stdout]    |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/lexer/token.rs:62:19
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Comment(Span, String),
[INFO] [stdout]    |     -------       ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are 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] 62 |     Comment(Span, ()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/lexer/token.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 |     Invalid(FixedTokenSpan, char),
[INFO] [stdout]    |     -------                 ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are 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] 64 |     Invalid(FixedTokenSpan, ()),
[INFO] [stdout]    |                             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Star` is never constructed
[INFO] [stdout]   --> src/lexer/token.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub enum Token {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 56 |     Star(FixedTokenSpan),          // *
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` 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 `Mod` is never constructed
[INFO] [stdout]    --> src/lexer/token.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 134 | pub enum BinOp {
[INFO] [stdout]     |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 139 |     Mod,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BinOp` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stmt` is never constructed
[INFO] [stdout]   --> src/parser/ast.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Stmt {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Item` and `Empty` are never constructed
[INFO] [stdout]   --> src/parser/ast.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub enum StmtKind {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 49 |     Item(ItemKind),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     Empty,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StmtKind` 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: struct `ArrayIndexing` is never constructed
[INFO] [stdout]    --> src/parser/ast.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct ArrayIndexing {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Const` and `Rt` are never constructed
[INFO] [stdout]  --> src/parser/attrs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Constness {
[INFO] [stdout]   |          --------- variants in this enum
[INFO] [stdout] 3 |     Undefined,
[INFO] [stdout] 4 |     Const,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     Rt, // runtime
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Constness` 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 `Unsafe` and `Safe` are never constructed
[INFO] [stdout]   --> src/parser/attrs.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub enum Unsafety {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 23 |     Unsafe,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 24 |     Safe,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Unsafety` 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 `Async`, `Unsafe`, and `Extern` are never constructed
[INFO] [stdout]   --> src/parser/keyword.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum Keyword {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     Async,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 26 |     Unsafe,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 27 |     Extern,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keyword` 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 `diagnostics` is never read
[INFO] [stdout]   --> src/parser/parser.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Parser {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     diagnostics: DiagnosticBuilder,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `skip_comments` is never used
[INFO] [stdout]     --> src/parser/parser.rs:1019:8
[INFO] [stdout]      |
[INFO] [stdout] 30   | impl Parser {
[INFO] [stdout]      | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1019 |     fn skip_comments(&mut self) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TraitManager` is never constructed
[INFO] [stdout]   --> src/traitsolver/mod.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct TraitManager {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `insert_impl` is never used
[INFO] [stdout]   --> src/traitsolver/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl TraitManager {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 28 |     fn insert_impl(&mut self, tait: &Ty, obligations: Vec<Ty>) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `funcs_by_path` is never read
[INFO] [stdout]    --> src/tyck/mod.rs:330:5
[INFO] [stdout]     |
[INFO] [stdout] 324 | pub struct Environment {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 330 |     funcs_by_path: HashMap<String, HashMap<String, FunctionNode>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut ret = Arc::new(InsertOnlyConcVec::new(files.len()));
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_input_and_err_with_span`, `from_input_and_err`, and `build_multi_span_string` are never used
[INFO] [stdout]   --> src/diagnostics/builder.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<'sup> DiagnosticSubBuilder<'sup> {
[INFO] [stdout]    | ------------------------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub(crate) fn from_input_and_err_with_span(
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub(crate) fn from_input_and_err(
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `build_span_string` and `build_multi_span_string` are never used
[INFO] [stdout]    --> src/diagnostics/builder.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl DiagnosticPart {
[INFO] [stdout]     | ------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 131 |     fn build_span_string(span: &Span) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn build_multi_span_string(len: usize, spans: &Vec<Span>) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lex_many` is never used
[INFO] [stdout]   --> src/lexer/mod.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn lex_many(mut files: Vec<String>) -> Result<Vec<Vec<Token>>, DiagnosticBuilder> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Underscore` is never constructed
[INFO] [stdout]   --> src/lexer/token.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub enum TokenType {
[INFO] [stdout]    |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 27 |     Underscore,    // _
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenType` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/lexer/token.rs:41:18
[INFO] [stdout]    |
[INFO] [stdout] 41 |     StrLit(Span, String),
[INFO] [stdout]    |     ------       ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are 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] 41 |     StrLit(Span, ()),
[INFO] [stdout]    |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/lexer/token.rs:62:19
[INFO] [stdout]    |
[INFO] [stdout] 62 |     Comment(Span, String),
[INFO] [stdout]    |     -------       ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are 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] 62 |     Comment(Span, ()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> src/lexer/token.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 |     Invalid(FixedTokenSpan, char),
[INFO] [stdout]    |     -------                 ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are 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] 64 |     Invalid(FixedTokenSpan, ()),
[INFO] [stdout]    |                             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Star` is never constructed
[INFO] [stdout]   --> src/lexer/token.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub enum Token {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 56 |     Star(FixedTokenSpan),          // *
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` 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 `Mod` is never constructed
[INFO] [stdout]    --> src/lexer/token.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 134 | pub enum BinOp {
[INFO] [stdout]     |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 139 |     Mod,
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BinOp` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Stmt` is never constructed
[INFO] [stdout]   --> src/parser/ast.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Stmt {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Item` and `Empty` are never constructed
[INFO] [stdout]   --> src/parser/ast.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub enum StmtKind {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 49 |     Item(ItemKind),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     Empty,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StmtKind` 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: struct `ArrayIndexing` is never constructed
[INFO] [stdout]    --> src/parser/ast.rs:303:12
[INFO] [stdout]     |
[INFO] [stdout] 303 | pub struct ArrayIndexing {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Const` and `Rt` are never constructed
[INFO] [stdout]  --> src/parser/attrs.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Constness {
[INFO] [stdout]   |          --------- variants in this enum
[INFO] [stdout] 3 |     Undefined,
[INFO] [stdout] 4 |     Const,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     Rt, // runtime
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Constness` 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 `Unsafe` and `Safe` are never constructed
[INFO] [stdout]   --> src/parser/attrs.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub enum Unsafety {
[INFO] [stdout]    |          -------- variants in this enum
[INFO] [stdout] 23 |     Unsafe,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 24 |     Safe,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Unsafety` 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 `Async`, `Unsafe`, and `Extern` are never constructed
[INFO] [stdout]   --> src/parser/keyword.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub enum Keyword {
[INFO] [stdout]    |          ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 25 |     Async,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 26 |     Unsafe,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 27 |     Extern,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Keyword` 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 `diagnostics` is never read
[INFO] [stdout]   --> src/parser/parser.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Parser {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     diagnostics: DiagnosticBuilder,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `skip_comments` is never used
[INFO] [stdout]     --> src/parser/parser.rs:1019:8
[INFO] [stdout]      |
[INFO] [stdout] 30   | impl Parser {
[INFO] [stdout]      | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1019 |     fn skip_comments(&mut self) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TraitManager` is never constructed
[INFO] [stdout]   --> src/traitsolver/mod.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct TraitManager {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `insert_impl` is never used
[INFO] [stdout]   --> src/traitsolver/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl TraitManager {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 28 |     fn insert_impl(&mut self, tait: &Ty, obligations: Vec<Ty>) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `funcs_by_path` is never read
[INFO] [stdout]    --> src/tyck/mod.rs:330:5
[INFO] [stdout]     |
[INFO] [stdout] 324 | pub struct Environment {
[INFO] [stdout]     |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 330 |     funcs_by_path: HashMap<String, HashMap<String, FunctionNode>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 50 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "d0c6ad409ae5cf5877de52fc6a1aa2bf7e5990574f07c935347bde47f752e90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0c6ad409ae5cf5877de52fc6a1aa2bf7e5990574f07c935347bde47f752e90e", kill_on_drop: false }`
[INFO] [stdout] d0c6ad409ae5cf5877de52fc6a1aa2bf7e5990574f07c935347bde47f752e90e