[INFO] cloning repository https://github.com/ajprabhu09/compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ajprabhu09/compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajprabhu09%2Fcompiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajprabhu09%2Fcompiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab00ec976d5dac3c26dfe4c58250d2a0a7bdf44d
[INFO] checking ajprabhu09/compiler/ab00ec976d5dac3c26dfe4c58250d2a0a7bdf44d against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fajprabhu09%2Fcompiler" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ajprabhu09/compiler on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ajprabhu09/compiler
[INFO] finished tweaking git repo https://github.com/ajprabhu09/compiler
[INFO] tweaked toml for git repo https://github.com/ajprabhu09/compiler written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ajprabhu09/compiler 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating git repository `https://github.com/maciejhirsz/logos/`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b598c626f582d7290a7696368b7b3b00606c4746fe0bd8535b5d294d80927033
[INFO] running `Command { std: "docker" "start" "-a" "b598c626f582d7290a7696368b7b3b00606c4746fe0bd8535b5d294d80927033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b598c626f582d7290a7696368b7b3b00606c4746fe0bd8535b5d294d80927033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b598c626f582d7290a7696368b7b3b00606c4746fe0bd8535b5d294d80927033", kill_on_drop: false }`
[INFO] [stdout] b598c626f582d7290a7696368b7b3b00606c4746fe0bd8535b5d294d80927033
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 281b5ab950c634e117a0b0d628ea363145bebd75253fcbb3daaddea8592cd86f
[INFO] running `Command { std: "docker" "start" "-a" "281b5ab950c634e117a0b0d628ea363145bebd75253fcbb3daaddea8592cd86f", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling frontend v0.1.0 (/opt/rustwide/workdir/frontend)
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking compiler v0.1.0 (/opt/rustwide/workdir/compiler)
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling psm v0.1.21
[INFO] [stderr]    Compiling stacker v0.1.15
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling logos-codegen v0.13.0 (https://github.com/maciejhirsz/logos/#291a6249)
[INFO] [stderr]    Compiling logos-derive v0.13.0 (https://github.com/maciejhirsz/logos/#291a6249)
[INFO] [stderr]     Checking logos v0.13.0 (https://github.com/maciejhirsz/logos/#291a6249)
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]  --> frontend/src/ast.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `assert_matches::assert_matches`, `boxed`, `io::Empty`, `process::id`, and `vec`
[INFO] [stdout]  --> frontend/src/ast.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{boxed, fmt::Debug, io::Empty, ops::Range, rc::Rc, vec, assert_matches::assert_matches, collections::LinkedList, process::id};
[INFO] [stdout]   |           ^^^^^              ^^^^^^^^^                      ^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `empty_expr` and `self`
[INFO] [stdout]  --> frontend/src/ast.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     token::{self, Token}, parsing::{PResult, ParsingErr, Match, Parseable, Consume, self, ZeroOrMore, MatchSeq, empty_expr, empty_combine...
[INFO] [stdout]   |             ^^^^                                                                                                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token::*`
[INFO] [stdout]   --> frontend/src/ast.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use Token::*;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `clone` and `fs`
[INFO] [stdout]  --> frontend/src/token.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{clone, fs};
[INFO] [stdout]   |           ^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lexer`
[INFO] [stdout]  --> frontend/src/token.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use logos::{Lexer, Logos};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format`, `ops`, and `rc::Rc`
[INFO] [stdout]  --> frontend/src/parsing.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops, rc::Rc, fmt::{format, Debug}};
[INFO] [stdout]   |           ^^^  ^^^^^^        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]  --> frontend/src/ast.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::fmt;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `assert_matches::assert_matches`, `boxed`, `io::Empty`, `process::id`, and `vec`
[INFO] [stdout]  --> frontend/src/ast.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{boxed, fmt::Debug, io::Empty, ops::Range, rc::Rc, vec, assert_matches::assert_matches, collections::LinkedList, process::id};
[INFO] [stdout]   |           ^^^^^              ^^^^^^^^^                      ^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `empty_expr` and `self`
[INFO] [stdout]  --> frontend/src/ast.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     token::{self, Token}, parsing::{PResult, ParsingErr, Match, Parseable, Consume, self, ZeroOrMore, MatchSeq, empty_expr, empty_combine...
[INFO] [stdout]   |             ^^^^                                                                                                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token::*`
[INFO] [stdout]   --> frontend/src/ast.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use Token::*;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `clone` and `fs`
[INFO] [stdout]  --> frontend/src/token.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{clone, fs};
[INFO] [stdout]   |           ^^^^^  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lexer`
[INFO] [stdout]  --> frontend/src/token.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use logos::{Lexer, Logos};
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format`, `ops`, and `rc::Rc`
[INFO] [stdout]  --> frontend/src/parsing.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops, rc::Rc, fmt::{format, Debug}};
[INFO] [stdout]   |           ^^^  ^^^^^^        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::assert_matches::assert_matches`
[INFO] [stdout]    --> frontend/src/parsing.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     use std::assert_matches::assert_matches;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Source`
[INFO] [stdout]    --> frontend/src/parsing.rs:235:24
[INFO] [stdout]     |
[INFO] [stdout] 235 |     use logos::{Lexer, Source};
[INFO] [stdout]     |                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Expr`, `SrcInfo`, `self`, and `self`
[INFO] [stdout]    --> frontend/src/parsing.rs:238:15
[INFO] [stdout]     |
[INFO] [stdout] 238 |         ast::{Expr, SrcInfo, self},
[INFO] [stdout]     |               ^^^^  ^^^^^^^  ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 241 |         token::{Token, self},
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::format`
[INFO] [stdout]   --> frontend/src/lib.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 |     use std::{fmt::format, time::Instant};
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Token`
[INFO] [stdout]   --> frontend/src/lib.rs:13:45
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use crate::{ast::Ast, srcfile::SrcFile, token::Token};
[INFO] [stdout]    |                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> frontend/src/ast.rs:260:17
[INFO] [stdout]     |
[INFO] [stdout] 260 |             |a, b|{
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> frontend/src/ast.rs:260:17
[INFO] [stdout]     |
[INFO] [stdout] 260 |             |a, b|{
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> frontend/src/ast.rs:344:30
[INFO] [stdout]     |
[INFO] [stdout] 344 | ...                   |a,b| {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> frontend/src/ast.rs:344:30
[INFO] [stdout]     |
[INFO] [stdout] 344 | ...                   |a,b| {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> frontend/src/ast.rs:361:29
[INFO] [stdout]     |
[INFO] [stdout] 361 |                         let mut list;
[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 variable: `name_`
[INFO] [stdout]    --> frontend/src/ast.rs:380:50
[INFO] [stdout]     |
[INFO] [stdout] 380 |                     if let Expr::FuncDef { name: name_, args, block, return_type } = func_def {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_name_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]    --> frontend/src/ast.rs:405:56
[INFO] [stdout]     |
[INFO] [stdout] 405 |                     if let Expr::FuncDef { name, args, block, return_type } = a {
[INFO] [stdout]     |                                                        ^^^^^ help: try ignoring the field: `block: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> frontend/src/ast.rs:361:29
[INFO] [stdout]     |
[INFO] [stdout] 361 |                         let mut list;
[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 variable: `name_`
[INFO] [stdout]    --> frontend/src/ast.rs:380:50
[INFO] [stdout]     |
[INFO] [stdout] 380 |                     if let Expr::FuncDef { name: name_, args, block, return_type } = func_def {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_name_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]    --> frontend/src/ast.rs:405:56
[INFO] [stdout]     |
[INFO] [stdout] 405 |                     if let Expr::FuncDef { name, args, block, return_type } = a {
[INFO] [stdout]     |                                                        ^^^^^ help: try ignoring the field: `block: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parsing`
[INFO] [stdout]    --> frontend/src/parsing.rs:239:9
[INFO] [stdout]     |
[INFO] [stdout] 239 |         parsing::*,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexr`
[INFO] [stdout]    --> frontend/src/parsing.rs:143:26
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn peek_match(&self, lexr: &mut Lexer<'a, Token>) -> bool {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_lexr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lex`
[INFO] [stdout]    --> frontend/src/parsing.rs:187:6
[INFO] [stdout]     |
[INFO] [stdout] 187 |     |lex: &mut Lexer<'_, Token>|  { Ok(Expr::Empty)}
[INFO] [stdout]     |      ^^^ help: if this is intentional, prefix it with an underscore: `_lex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> frontend/src/parsing.rs:191:6
[INFO] [stdout]     |
[INFO] [stdout] 191 |     |a, b| Ok(Expr::Empty)
[INFO] [stdout]     |      ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> frontend/src/parsing.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |     |a, b| Ok(Expr::Empty)
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> frontend/src/parsing.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 194 |     |a, b| Ok(a)
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> frontend/src/parsing.rs:198:6
[INFO] [stdout]     |
[INFO] [stdout] 198 |     |a, b| Ok(b)
[INFO] [stdout]     |      ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexr`
[INFO] [stdout]    --> frontend/src/parsing.rs:217:26
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn peek_match(&self, lexr: &mut Lexer<'a, Token>) -> bool {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_lexr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexr`
[INFO] [stdout]    --> frontend/src/parsing.rs:143:26
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn peek_match(&self, lexr: &mut Lexer<'a, Token>) -> bool {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_lexr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lex`
[INFO] [stdout]    --> frontend/src/parsing.rs:187:6
[INFO] [stdout]     |
[INFO] [stdout] 187 |     |lex: &mut Lexer<'_, Token>|  { Ok(Expr::Empty)}
[INFO] [stdout]     |      ^^^ help: if this is intentional, prefix it with an underscore: `_lex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> frontend/src/parsing.rs:191:6
[INFO] [stdout]     |
[INFO] [stdout] 191 |     |a, b| Ok(Expr::Empty)
[INFO] [stdout]     |      ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> frontend/src/parsing.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |     |a, b| Ok(Expr::Empty)
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> frontend/src/parsing.rs:194:9
[INFO] [stdout]     |
[INFO] [stdout] 194 |     |a, b| Ok(a)
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> frontend/src/parsing.rs:198:6
[INFO] [stdout]     |
[INFO] [stdout] 198 |     |a, b| Ok(b)
[INFO] [stdout]     |      ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexr`
[INFO] [stdout]    --> frontend/src/parsing.rs:217:26
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn peek_match(&self, lexr: &mut Lexer<'a, Token>) -> bool {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_lexr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `files`
[INFO] [stdout]   --> frontend/src/lib.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let files = glob("./test_files/*.snake").expect("invalid path");
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_files`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testsrc` is never used
[INFO] [stdout]    --> frontend/src/parsing.rs:244:12
[INFO] [stdout]     |
[INFO] [stdout] 244 |     pub fn testsrc(src: &str) -> SrcFile {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_lexr` is never used
[INFO] [stdout]    --> frontend/src/parsing.rs:251:12
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn print_lexr<'a>(lexr: &mut Lexer<'a, Token>) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking middle v0.1.0 (/opt/rustwide/workdir/middle)
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::panicking::panic`
[INFO] [stdout]  --> middle/src/typechecking.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panicking::panic;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> middle/src/typechecking.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::{HashMap, BTreeMap}, rc::Rc};
[INFO] [stdout]   |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> middle/src/typechecking.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::panicking::panic`
[INFO] [stdout]  --> middle/src/typechecking.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panicking::panic;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> middle/src/typechecking.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::{HashMap, BTreeMap}, rc::Rc};
[INFO] [stdout]   |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'panic_internals': internal details of the implementation of the `panic!` and related macros
[INFO] [stdout]  --> middle/src/typechecking.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panicking::panic;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: add `#![feature(panic_internals)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]  --> middle/src/typechecking.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::hash::Hash;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'panic_internals': internal details of the implementation of the `panic!` and related macros
[INFO] [stdout]  --> middle/src/typechecking.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::panicking::panic;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: add `#![feature(panic_internals)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2024-09-17; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> middle/src/typechecking.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn check(&mut self) -> Type<'a> {
[INFO] [stdout]    |                            -------- expected `frontend::ast::Type<'_>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 74 |                 return ty;
[INFO] [stdout]    |                        ^^ expected `Type<'_>`, found `Option<Type<'_>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `frontend::ast::Type<'_>`
[INFO] [stdout]                 found enum `Option<frontend::ast::Type<'_>>`
[INFO] [stdout] help: consider using `Option::expect` to unwrap the `Option<frontend::ast::Type<'_>>` value, panicking if the value is an `Option::None`
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 return ty.expect("REASON");
[INFO] [stdout]    |                          +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> middle/src/typechecking.rs:74:24
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn check(&mut self) -> Type<'a> {
[INFO] [stdout]    |                            -------- expected `frontend::ast::Type<'_>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 74 |                 return ty;
[INFO] [stdout]    |                        ^^ expected `Type<'_>`, found `Option<Type<'_>>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `frontend::ast::Type<'_>`
[INFO] [stdout]                 found enum `Option<frontend::ast::Type<'_>>`
[INFO] [stdout] help: consider using `Option::expect` to unwrap the `Option<frontend::ast::Type<'_>>` value, panicking if the value is an `Option::None`
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 return ty.expect("REASON");
[INFO] [stdout]    |                          +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `middle` (lib) due to 3 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `middle` (lib test) due to 3 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "281b5ab950c634e117a0b0d628ea363145bebd75253fcbb3daaddea8592cd86f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "281b5ab950c634e117a0b0d628ea363145bebd75253fcbb3daaddea8592cd86f", kill_on_drop: false }`
[INFO] [stdout] 281b5ab950c634e117a0b0d628ea363145bebd75253fcbb3daaddea8592cd86f