[INFO] cloning repository https://github.com/justinas/mylang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/justinas/mylang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinas%2Fmylang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinas%2Fmylang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86e92c585be15717e552d909c35e8be0b6938d04
[INFO] testing justinas/mylang against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinas%2Fmylang" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/justinas/mylang on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/justinas/mylang
[INFO] finished tweaking git repo https://github.com/justinas/mylang
[INFO] tweaked toml for git repo https://github.com/justinas/mylang written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/justinas/mylang 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87a7d525d0d15c34450f7fdb418adff7de7685a41964e90d0c9852c0634af11a
[INFO] running `Command { std: "docker" "start" "-a" "87a7d525d0d15c34450f7fdb418adff7de7685a41964e90d0c9852c0634af11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87a7d525d0d15c34450f7fdb418adff7de7685a41964e90d0c9852c0634af11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87a7d525d0d15c34450f7fdb418adff7de7685a41964e90d0c9852c0634af11a", kill_on_drop: false }`
[INFO] [stdout] 87a7d525d0d15c34450f7fdb418adff7de7685a41964e90d0c9852c0634af11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0058f1c844a490b92f6fcf32e286a763a4362b3457e4b34bd1e1ea9a9c8b19ca
[INFO] running `Command { std: "docker" "start" "-a" "0058f1c844a490b92f6fcf32e286a763a4362b3457e4b34bd1e1ea9a9c8b19ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling mylang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Entry`
[INFO] [stdout]  --> src/codegen/mod.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::hash_map::{Entry, HashMap};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codegen/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             try!(writer.write(&buf));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/codegen/gen.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn gen(&self, &mut Context) -> Result<Vec<Instruction>, Error>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Atom`, `Block`, `Conditional`, `Expr`, `FnItem`, `IfStmt`, `Operation`, `Stmt`, `Type`, `WhileStmt`, `self`
[INFO] [stdout]  --> src/codegen/test.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::parser::{self, Atom, Block, Conditional, Expr, FnItem, IfStmt, Operation, Stmt,
[INFO] [stdout]   |                            ^^^^  ^^^^  ^^^^^  ^^^^^^^^^^^  ^^^^  ^^^^^^  ^^^^^^  ^^^^^^^^^  ^^^^
[INFO] [stdout] 2 |                            Type, WhileStmt};
[INFO] [stdout]   |                            ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Gen`, `Program`, `Symbol`, `Typed`
[INFO] [stdout]  --> src/codegen/test.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{Context, Gen, Program, Symbol, Typed};
[INFO] [stdout]   |             ^^^^^^^  ^^^  ^^^^^^^  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Error`
[INFO] [stdout]  --> src/codegen/test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction`
[INFO] [stdout]  --> src/codegen/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::Instruction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction::*`
[INFO] [stdout]  --> src/codegen/test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::Instruction::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Marker`
[INFO] [stdout]  --> src/codegen/test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::Marker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::parse_program`
[INFO] [stdout]  --> src/codegen/test.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::parse_program;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `empty_fn`
[INFO] [stdout]   --> src/codegen/test.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | macro_rules! empty_fn {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Lines`
[INFO] [stdout]  --> src/lexer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Lines;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lexer/mod.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         try!(r.read_to_string(&mut contents));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:194:32
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   '0'...'9' => self.lex_const(true),
[INFO] [stdout]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:300:20
[INFO] [stdout]     |
[INFO] [stdout] 300 |                 '0'...'9' => self.lex_const(false),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:20
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:32
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:338:20
[INFO] [stdout]     |
[INFO] [stdout] 338 |                 '0'...'9' => val.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:20
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:32
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:20
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:32
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:44
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/lexer/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(write!(f, r#"Function {:?} ( "#, self.name));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             try!(write!(f, r"{:?} {:?} ", param.typ, param.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keyword`, `TokenAt`
[INFO] [stdout]  --> src/parser/expr.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Delimiter, Keyword, Operator, Token, TokenAt};
[INFO] [stdout]   |                        ^^^^^^^                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/parser/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `parse_atom`, `parse_comparison`, `parse_logexpr`, `parse_product`, `parse_sum`
[INFO] [stdout]  --> src/parser/test.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::expr::{parse_atom, parse_comparison, parse_logexpr, parse_product, parse_sum};
[INFO] [stdout]   |                   ^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction`
[INFO] [stdout]  --> src/vm/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::Instruction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction::*`
[INFO] [stdout]  --> src/vm/test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::Instruction::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Machine`
[INFO] [stdout]  --> src/vm/test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::Machine;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::codegen::Program`
[INFO] [stdout]  --> src/vm/test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::super::codegen::Program;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::STACK_SIZE`
[INFO] [stdout]  --> src/vm/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::STACK_SIZE;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err((t, e)) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut machine = vm::Machine::new(&bytes);
[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: `b`
[INFO] [stdout]   --> src/codegen/mod.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |     funcs.sort_by(|a, b| if a.name == "main" {
[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]   --> src/codegen/gen.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 for a in args.iter() {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/codegen/gen.rs:254:19
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn typ(&self, ctx: &mut Context) -> Result<Type, Error> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:278:31
[INFO] [stdout]     |
[INFO] [stdout] 278 |                         Some(&c) => Err(ErrorVariant::Expected('&')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 |                         Some(&c) => Err(ErrorVariant::Expected('|')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 c => return Err((tokens, self.error(ErrorVariant::UnknownCharacter))),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remain`
[INFO] [stdout]    --> src/parser/mod.rs:106:20
[INFO] [stdout]     |
[INFO] [stdout] 106 |             (None, remain) => return Err(()),
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_remain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `push_symbol` are never used
[INFO] [stdout]    --> src/codegen/mod.rs:88:8
[INFO] [stdout]     |
[INFO] [stdout] 87  | impl<'a> Context<'a> {
[INFO] [stdout]     | -------------------- associated items in this implementation
[INFO] [stdout] 88  |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     fn push_symbol(&mut self, symbol: Symbol) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             write!(stderr(), "Usage: ./mylang [filename]");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             write!(stderr(), "Error while opening {}: {}", filename, e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             write!(stderr(), "Lexer I/O error: {:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             write!(stderr(), "{}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             write!(stderr(), "Syntax error.");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(stderr(), "{:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         write!(f, ")\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         write!(f, "{:#?}\n", self.block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:53:41
[INFO] [stdout]    |
[INFO] [stdout] 53 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Operator` does not implement `Clone`, so calling `clone` on `&Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:82:41
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Operator` does not implement `Clone`, so calling `clone` on `&Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "0058f1c844a490b92f6fcf32e286a763a4362b3457e4b34bd1e1ea9a9c8b19ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0058f1c844a490b92f6fcf32e286a763a4362b3457e4b34bd1e1ea9a9c8b19ca", kill_on_drop: false }`
[INFO] [stdout] 0058f1c844a490b92f6fcf32e286a763a4362b3457e4b34bd1e1ea9a9c8b19ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d31ba24bfc770427dbd3087554041a874b1a874d0c06fa5855e3b6480b73b857
[INFO] running `Command { std: "docker" "start" "-a" "d31ba24bfc770427dbd3087554041a874b1a874d0c06fa5855e3b6480b73b857", kill_on_drop: false }`
[INFO] [stderr]    Compiling mylang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Entry`
[INFO] [stdout]  --> src/codegen/mod.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::hash_map::{Entry, HashMap};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codegen/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             try!(writer.write(&buf));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/codegen/gen.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn gen(&self, &mut Context) -> Result<Vec<Instruction>, Error>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Operation`
[INFO] [stdout]    --> src/codegen/gen.rs:326:51
[INFO] [stdout]     |
[INFO] [stdout] 326 |     use super::super::super::parser::{Atom, Expr, Operation, Type};
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Lines`
[INFO] [stdout]  --> src/lexer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Lines;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lexer/mod.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         try!(r.read_to_string(&mut contents));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:194:32
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   '0'...'9' => self.lex_const(true),
[INFO] [stdout]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:300:20
[INFO] [stdout]     |
[INFO] [stdout] 300 |                 '0'...'9' => self.lex_const(false),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:20
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:32
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:338:20
[INFO] [stdout]     |
[INFO] [stdout] 338 |                 '0'...'9' => val.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:20
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:32
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:20
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:32
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:44
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(write!(f, r#"Function {:?} ( "#, self.name));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             try!(write!(f, r"{:?} {:?} ", param.typ, param.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keyword`, `TokenAt`
[INFO] [stdout]  --> src/parser/expr.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Delimiter, Keyword, Operator, Token, TokenAt};
[INFO] [stdout]   |                        ^^^^^^^                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err((t, e)) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut machine = vm::Machine::new(&bytes);
[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: `b`
[INFO] [stdout]   --> src/codegen/mod.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |     funcs.sort_by(|a, b| if a.name == "main" {
[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]   --> src/codegen/gen.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 for a in args.iter() {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/codegen/gen.rs:254:19
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn typ(&self, ctx: &mut Context) -> Result<Type, Error> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:278:31
[INFO] [stdout]     |
[INFO] [stdout] 278 |                         Some(&c) => Err(ErrorVariant::Expected('&')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 |                         Some(&c) => Err(ErrorVariant::Expected('|')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 c => return Err((tokens, self.error(ErrorVariant::UnknownCharacter))),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remain`
[INFO] [stdout]    --> src/parser/mod.rs:106:20
[INFO] [stdout]     |
[INFO] [stdout] 106 |             (None, remain) => return Err(()),
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_remain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `push_symbol` is never used
[INFO] [stdout]    --> src/codegen/mod.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 87  | impl<'a> Context<'a> {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 136 |     fn push_symbol(&mut self, symbol: Symbol) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             write!(stderr(), "Usage: ./mylang [filename]");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             write!(stderr(), "Error while opening {}: {}", filename, e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             write!(stderr(), "Lexer I/O error: {:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             write!(stderr(), "{}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             write!(stderr(), "Syntax error.");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(stderr(), "{:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         write!(f, ")\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         write!(f, "{:#?}\n", self.block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:53:41
[INFO] [stdout]    |
[INFO] [stdout] 53 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:82:41
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "d31ba24bfc770427dbd3087554041a874b1a874d0c06fa5855e3b6480b73b857", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d31ba24bfc770427dbd3087554041a874b1a874d0c06fa5855e3b6480b73b857", kill_on_drop: false }`
[INFO] [stdout] d31ba24bfc770427dbd3087554041a874b1a874d0c06fa5855e3b6480b73b857
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bd4a58819cd52e9bcca9615b6af243edebc126c1b228d1f824fb374e70a1a2d0
[INFO] running `Command { std: "docker" "start" "-a" "bd4a58819cd52e9bcca9615b6af243edebc126c1b228d1f824fb374e70a1a2d0", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Entry`
[INFO] [stderr]  --> src/codegen/mod.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::hash_map::{Entry, HashMap};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/codegen/mod.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             try!(writer.write(&buf));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/codegen/gen.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn gen(&self, &mut Context) -> Result<Vec<Instruction>, Error>;
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Operation`
[INFO] [stderr]    --> src/codegen/gen.rs:326:51
[INFO] [stderr]     |
[INFO] [stderr] 326 |     use super::super::super::parser::{Atom, Expr, Operation, Type};
[INFO] [stderr]     |                                                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Lines`
[INFO] [stderr]  --> src/lexer/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::Lines;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lexer/mod.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |         try!(r.read_to_string(&mut contents));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:194:32
[INFO] [stderr]     |
[INFO] [stderr] 194 | ...                   '0'...'9' => self.lex_const(true),
[INFO] [stderr]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:300:20
[INFO] [stderr]     |
[INFO] [stderr] 300 |                 '0'...'9' => self.lex_const(false),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:301:20
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:301:32
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:338:20
[INFO] [stderr]     |
[INFO] [stderr] 338 |                 '0'...'9' => val.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:339:20
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:339:32
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:354:20
[INFO] [stderr]     |
[INFO] [stderr] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:354:32
[INFO] [stderr]     |
[INFO] [stderr] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:354:44
[INFO] [stderr]     |
[INFO] [stderr] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/parser/mod.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         try!(write!(f, r#"Function {:?} ( "#, self.name));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/parser/mod.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |             try!(write!(f, r"{:?} {:?} ", param.typ, param.name));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Keyword`, `TokenAt`
[INFO] [stderr]  --> src/parser/expr.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{Delimiter, Keyword, Operator, Token, TokenAt};
[INFO] [stderr]   |                        ^^^^^^^                   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:44:14
[INFO] [stderr]    |
[INFO] [stderr] 44 |         Err((t, e)) => {
[INFO] [stderr]    |              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut machine = vm::Machine::new(&bytes);
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/codegen/mod.rs:33:23
[INFO] [stderr]    |
[INFO] [stderr] 33 |     funcs.sort_by(|a, b| if a.name == "main" {
[INFO] [stderr]    |                       ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/codegen/gen.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 for a in args.iter() {
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/codegen/gen.rs:254:19
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn typ(&self, ctx: &mut Context) -> Result<Type, Error> {
[INFO] [stderr]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lexer/mod.rs:278:31
[INFO] [stderr]     |
[INFO] [stderr] 278 |                         Some(&c) => Err(ErrorVariant::Expected('&')),
[INFO] [stderr]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lexer/mod.rs:290:31
[INFO] [stderr]     |
[INFO] [stderr] 290 |                         Some(&c) => Err(ErrorVariant::Expected('|')),
[INFO] [stderr]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lexer/mod.rs:309:17
[INFO] [stderr]     |
[INFO] [stderr] 309 |                 c => return Err((tokens, self.error(ErrorVariant::UnknownCharacter))),
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remain`
[INFO] [stderr]    --> src/parser/mod.rs:106:20
[INFO] [stderr]     |
[INFO] [stderr] 106 |             (None, remain) => return Err(()),
[INFO] [stderr]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_remain`
[INFO] [stderr] 
[INFO] [stderr] warning: method `push_symbol` is never used
[INFO] [stderr]    --> src/codegen/mod.rs:136:8
[INFO] [stderr]     |
[INFO] [stderr] 87  | impl<'a> Context<'a> {
[INFO] [stderr]     | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 136 |     fn push_symbol(&mut self, symbol: Symbol) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             write!(stderr(), "Usage: ./mylang [filename]");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             write!(stderr(), "Error while opening {}: {}", filename, e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             write!(stderr(), "Lexer I/O error: {:?}", e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             write!(stderr(), "{}", e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             write!(stderr(), "Syntax error.");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             write!(stderr(), "{:?}", e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/parser/mod.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         write!(f, ")\n");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/parser/mod.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         write!(f, "{:#?}\n", self.block);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/parser/expr.rs:53:41
[INFO] [stderr]    |
[INFO] [stderr] 53 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stderr]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/parser/expr.rs:82:41
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stderr]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stderr] 
[INFO] [stderr] warning: `mylang` (bin "mylang" test) generated 39 warnings (run `cargo fix --bin "mylang" --tests` to apply 26 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mylang-f680a6c1deb54164)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test codegen::test::test_decode ... ok
[INFO] [stdout] test codegen::test::test_encode ... ok
[INFO] [stdout] test codegen::gen::test::test_expr_typed ... ok
[INFO] [stdout] test codegen::test::test_gen_expr ... ok
[INFO] [stdout] test codegen::test::test_gen_fncall ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_block ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_assign ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_decl ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_expr ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_if ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_return ... ok
[INFO] [stdout] test codegen::test::test_integration ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_while ... ok
[INFO] [stdout] test codegen::test::test_opcode ... ok
[INFO] [stdout] test codegen::test::test_program_encode ... ok
[INFO] [stdout] test codegen::test::test_symbol_stack ... ok
[INFO] [stdout] test codegen::test::test_typed ... ok
[INFO] [stdout] test lexer::test::test_lex_const ... ok
[INFO] [stdout] test lexer::test::test_lex_delimiters ... ok
[INFO] [stdout] test lexer::test::test_lex_ident ... ok
[INFO] [stdout] test lexer::test::test_lex_keyword ... ok
[INFO] [stdout] test lexer::test::test_lex_line_comment ... ok
[INFO] [stdout] test lexer::test::test_lex_multiline_comment_no_end ... ok
[INFO] [stdout] test lexer::test::test_lex_multiline_comment ... ok
[INFO] [stdout] test lexer::test::test_lexer_errors ... ok
[INFO] [stdout] test lexer::test::test_lex_op ... ok
[INFO] [stdout] test lexer::test::test_lex_str ... ok
[INFO] [stdout] test parser::test::test_parse_assignstmt ... ok
[INFO] [stdout] test parser::test::test_parse ... ok
[INFO] [stdout] test parser::test::test_parse_break ... ok
[INFO] [stdout] test parser::test::test_parse_atom ... ok
[INFO] [stdout] test parser::test::test_parse_comparison ... ok
[INFO] [stdout] test parser::test::test_parse_product ... ok
[INFO] [stdout] test parser::test::test_parse_logexpr ... ok
[INFO] [stdout] test parser::test::test_parse_block ... ok
[INFO] [stdout] test vm::test::test_vm_call ... ok
[INFO] [stdout] test parser::test::test_parse_declstmt ... ok
[INFO] [stdout] test vm::test::test_neq ... ok
[INFO] [stdout] test parser::test::test_parse_ifstmt ... ok
[INFO] [stdout] test parser::test::test_parse_whilestmt ... ok
[INFO] [stdout] test vm::test::test_eq ... ok
[INFO] [stdout] test vm::test::test_vm_push_pop ... ok
[INFO] [stdout] test vm::test::test_jmp ... ok
[INFO] [stdout] test vm::test::test_jmpz ... ok
[INFO] [stdout] test parser::test::test_parse_stmt ... ok
[INFO] [stdout] test parser::test::test_parse_sum ... ok
[INFO] [stdout] test parser::test::test_parse_fn ... ok
[INFO] [stdout] test vm::test::test_arithmetic ... ok
[INFO] [stdout] test vm::test::test_vm_retw ... ok
[INFO] [stdout] test vm::test::test_vm_ret ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- vm::test::test_vm_ret stdout ----
[INFO] [stdout] thread 'vm::test::test_vm_ret' panicked at src/vm/test.rs:64:5:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 0
[INFO] [stdout]  right: 57005
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x560b54c0591c - std::backtrace_rs::backtrace::libunwind::trace::ha637c64ce894333a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x560b54c0591c - std::backtrace_rs::backtrace::trace_unsynchronized::h47f62dea28e0c88d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x560b54c0591c - std::sys_common::backtrace::_print_fmt::h9eef0abe20ede486
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x560b54c0591c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed7f999df88cc644
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x560b54c2f770 - core::fmt::rt::Argument::fmt::h1539a9308b8d058d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x560b54c2f770 - core::fmt::write::h3a39390d8560d9c9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x560b54c032cf - std::io::Write::write_fmt::h040b369f3a0f9cbc
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/io/mod.rs:1762:15
[INFO] [stdout]    7:     0x560b54c05704 - std::sys_common::backtrace::_print::h894006fb5c6f3d45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x560b54c05704 - std::sys_common::backtrace::print::h23a2d212c6fff936
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x560b54c073c7 - std::panicking::default_hook::{{closure}}::h8a1d2ee00185001a
[INFO] [stdout]   10:     0x560b54c070b3 - std::panicking::default_hook::h6038f2eba384e475
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x560b54bd7ac7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0ad024c9bdc6d768
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   12:     0x560b54bd7ac7 - test::test_main::{{closure}}::h7500b54257359db6
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x560b54c079d8 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1f8f335eaa9cfaee
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2021:9
[INFO] [stdout]   14:     0x560b54c079d8 - std::panicking::rust_panic_with_hook::h2b5517d590cab22e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x560b54c0772e - std::panicking::begin_panic_handler::{{closure}}::h233112c06e0ef43e
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x560b54c05de6 - std::sys_common::backtrace::__rust_end_short_backtrace::h6e893f24d7ebbff8
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:170:18
[INFO] [stdout]   17:     0x560b54c07492 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x560b54b3ecf5 - core::panicking::panic_fmt::hbf0e066aabfa482c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x560b54b3f10b - core::panicking::assert_failed_inner::h0bba8b7c26ee4492
[INFO] [stdout]   20:     0x560b54b81f4e - core::panicking::assert_failed::hed4b41809e9988eb
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panicking.rs:279:5
[INFO] [stdout]   21:     0x560b54ba1d8f - mylang::vm::test::test_vm_ret::h2efa1f5d670304b1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/vm/test.rs:64:5
[INFO] [stdout]   22:     0x560b54ba19d7 - mylang::vm::test::test_vm_ret::{{closure}}::h8b8df66f349bbac1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/vm/test.rs:56:17
[INFO] [stdout]   23:     0x560b54b868a6 - core::ops::function::FnOnce::call_once::h59791e6fd7413e16
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x560b54bdd11f - core::ops::function::FnOnce::call_once::h2b5d431d5046312d
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x560b54bdd11f - test::__rust_begin_short_backtrace::h7714669af176e207
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:628:18
[INFO] [stdout]   26:     0x560b54bdc135 - test::run_test_in_process::{{closure}}::h85218797dcbcec12
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:60
[INFO] [stdout]   27:     0x560b54bdc135 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h76c106ea31c14d7b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x560b54bdc135 - std::panicking::try::do_call::h3bd5d0f6620ee946
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x560b54bdc135 - std::panicking::try::h232e535e4744fe31
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x560b54bdc135 - std::panic::catch_unwind::h3ce3bd6ca8dbac68
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x560b54bdc135 - test::run_test_in_process::hc97b257c9621286a
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:651:27
[INFO] [stdout]   32:     0x560b54bdc135 - test::run_test::{{closure}}::h2aa798823a438d38
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:574:43
[INFO] [stdout]   33:     0x560b54ba43f6 - test::run_test::{{closure}}::h87d231c78fb59832
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/test/src/lib.rs:602:41
[INFO] [stdout]   34:     0x560b54ba43f6 - std::sys_common::backtrace::__rust_begin_short_backtrace::he6df152596625789
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys_common/backtrace.rs:154:18
[INFO] [stdout]   35:     0x560b54ba94a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha94be15d1e0acf36
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x560b54ba94a7 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9dc6bd6372f16606
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x560b54ba94a7 - std::panicking::try::do_call::h9057517f80303cd4
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x560b54ba94a7 - std::panicking::try::he3a30b11ee45340c
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x560b54ba94a7 - std::panic::catch_unwind::h410458cfd3528b8b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x560b54ba94a7 - std::thread::Builder::spawn_unchecked_::{{closure}}::h72ac3bdb567b737b
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x560b54ba94a7 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h38f34da3654a8344
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x560b54c0c465 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc7eafaff61e32df9
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   43:     0x560b54c0c465 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ba4a5de48dd2304
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/alloc/src/boxed.rs:2007:9
[INFO] [stdout]   44:     0x560b54c0c465 - std::sys::unix::thread::Thread::new::thread_start::he469335aef763e45
[INFO] [stdout]                                at /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f201357dac3 - <unknown>
[INFO] [stdout]   46:     0x7f201360ebf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     vm::test::test_vm_ret
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 49 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin mylang`
[INFO] running `Command { std: "docker" "inspect" "bd4a58819cd52e9bcca9615b6af243edebc126c1b228d1f824fb374e70a1a2d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd4a58819cd52e9bcca9615b6af243edebc126c1b228d1f824fb374e70a1a2d0", kill_on_drop: false }`
[INFO] [stdout] bd4a58819cd52e9bcca9615b6af243edebc126c1b228d1f824fb374e70a1a2d0
[INFO] testing justinas/mylang against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustinas%2Fmylang" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/justinas/mylang on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/justinas/mylang
[INFO] finished tweaking git repo https://github.com/justinas/mylang
[INFO] tweaked toml for git repo https://github.com/justinas/mylang written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/justinas/mylang 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5507cab384b72a248f27d92c01ffd242081fdabd58fb2d1914ebf8e08c9a5dd
[INFO] running `Command { std: "docker" "start" "-a" "d5507cab384b72a248f27d92c01ffd242081fdabd58fb2d1914ebf8e08c9a5dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5507cab384b72a248f27d92c01ffd242081fdabd58fb2d1914ebf8e08c9a5dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5507cab384b72a248f27d92c01ffd242081fdabd58fb2d1914ebf8e08c9a5dd", kill_on_drop: false }`
[INFO] [stdout] d5507cab384b72a248f27d92c01ffd242081fdabd58fb2d1914ebf8e08c9a5dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02b0dc1f5b5c7ab4964f77d0ad88cbbd056c2da12d05cd4caa196d040902d0b4
[INFO] running `Command { std: "docker" "start" "-a" "02b0dc1f5b5c7ab4964f77d0ad88cbbd056c2da12d05cd4caa196d040902d0b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling mylang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Entry`
[INFO] [stdout]  --> src/codegen/mod.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::hash_map::{Entry, HashMap};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codegen/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             try!(writer.write(&buf));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/codegen/gen.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn gen(&self, &mut Context) -> Result<Vec<Instruction>, Error>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Atom`, `Block`, `Conditional`, `Expr`, `FnItem`, `IfStmt`, `Operation`, `Stmt`, `Type`, `WhileStmt`, `self`
[INFO] [stdout]  --> src/codegen/test.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::parser::{self, Atom, Block, Conditional, Expr, FnItem, IfStmt, Operation, Stmt,
[INFO] [stdout]   |                            ^^^^  ^^^^  ^^^^^  ^^^^^^^^^^^  ^^^^  ^^^^^^  ^^^^^^  ^^^^^^^^^  ^^^^
[INFO] [stdout] 2 |                            Type, WhileStmt};
[INFO] [stdout]   |                            ^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context`, `Gen`, `Program`, `Symbol`, `Typed`
[INFO] [stdout]  --> src/codegen/test.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::{Context, Gen, Program, Symbol, Typed};
[INFO] [stdout]   |             ^^^^^^^  ^^^  ^^^^^^^  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Error`
[INFO] [stdout]  --> src/codegen/test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction`
[INFO] [stdout]  --> src/codegen/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::Instruction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction::*`
[INFO] [stdout]  --> src/codegen/test.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use super::Instruction::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Marker`
[INFO] [stdout]  --> src/codegen/test.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::Marker;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::parse_program`
[INFO] [stdout]  --> src/codegen/test.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::parse_program;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `empty_fn`
[INFO] [stdout]   --> src/codegen/test.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | macro_rules! empty_fn {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Lines`
[INFO] [stdout]  --> src/lexer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Lines;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lexer/mod.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         try!(r.read_to_string(&mut contents));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:194:32
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   '0'...'9' => self.lex_const(true),
[INFO] [stdout]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:300:20
[INFO] [stdout]     |
[INFO] [stdout] 300 |                 '0'...'9' => self.lex_const(false),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:20
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:32
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:338:20
[INFO] [stdout]     |
[INFO] [stdout] 338 |                 '0'...'9' => val.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:20
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:32
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:20
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:32
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:44
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/lexer/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(write!(f, r#"Function {:?} ( "#, self.name));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             try!(write!(f, r"{:?} {:?} ", param.typ, param.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keyword`, `TokenAt`
[INFO] [stdout]  --> src/parser/expr.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Delimiter, Keyword, Operator, Token, TokenAt};
[INFO] [stdout]   |                        ^^^^^^^                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/parser/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `parse_atom`, `parse_comparison`, `parse_logexpr`, `parse_product`, `parse_sum`
[INFO] [stdout]  --> src/parser/test.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::expr::{parse_atom, parse_comparison, parse_logexpr, parse_product, parse_sum};
[INFO] [stdout]   |                   ^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction`
[INFO] [stdout]  --> src/vm/test.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::Instruction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Instruction::*`
[INFO] [stdout]  --> src/vm/test.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::Instruction::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::Machine`
[INFO] [stdout]  --> src/vm/test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::Machine;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::codegen::Program`
[INFO] [stdout]  --> src/vm/test.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::super::codegen::Program;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::STACK_SIZE`
[INFO] [stdout]  --> src/vm/test.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::STACK_SIZE;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err((t, e)) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut machine = vm::Machine::new(&bytes);
[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: `b`
[INFO] [stdout]   --> src/codegen/mod.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |     funcs.sort_by(|a, b| if a.name == "main" {
[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]   --> src/codegen/gen.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 for a in args.iter() {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/codegen/gen.rs:254:19
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn typ(&self, ctx: &mut Context) -> Result<Type, Error> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:278:31
[INFO] [stdout]     |
[INFO] [stdout] 278 |                         Some(&c) => Err(ErrorVariant::Expected('&')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 |                         Some(&c) => Err(ErrorVariant::Expected('|')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 c => return Err((tokens, self.error(ErrorVariant::UnknownCharacter))),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remain`
[INFO] [stdout]    --> src/parser/mod.rs:106:20
[INFO] [stdout]     |
[INFO] [stdout] 106 |             (None, remain) => return Err(()),
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_remain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `push_symbol` are never used
[INFO] [stdout]    --> src/codegen/mod.rs:88:8
[INFO] [stdout]     |
[INFO] [stdout] 87  | impl<'a> Context<'a> {
[INFO] [stdout]     | -------------------- associated items in this implementation
[INFO] [stdout] 88  |     fn new() -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     fn push_symbol(&mut self, symbol: Symbol) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             write!(stderr(), "Usage: ./mylang [filename]");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             write!(stderr(), "Error while opening {}: {}", filename, e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             write!(stderr(), "Lexer I/O error: {:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             write!(stderr(), "{}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             write!(stderr(), "Syntax error.");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(stderr(), "{:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         write!(f, ")\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         write!(f, "{:#?}\n", self.block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:53:41
[INFO] [stdout]    |
[INFO] [stdout] 53 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Operator` does not implement `Clone`, so calling `clone` on `&Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:82:41
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Operator` does not implement `Clone`, so calling `clone` on `&Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "02b0dc1f5b5c7ab4964f77d0ad88cbbd056c2da12d05cd4caa196d040902d0b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02b0dc1f5b5c7ab4964f77d0ad88cbbd056c2da12d05cd4caa196d040902d0b4", kill_on_drop: false }`
[INFO] [stdout] 02b0dc1f5b5c7ab4964f77d0ad88cbbd056c2da12d05cd4caa196d040902d0b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb90df947ffac643094f37eedbc3223c1992510f81bb13a3f189abd7200406f1
[INFO] running `Command { std: "docker" "start" "-a" "bb90df947ffac643094f37eedbc3223c1992510f81bb13a3f189abd7200406f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling mylang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Entry`
[INFO] [stdout]  --> src/codegen/mod.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::hash_map::{Entry, HashMap};
[INFO] [stdout]   |                                  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/codegen/mod.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             try!(writer.write(&buf));
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/codegen/gen.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn gen(&self, &mut Context) -> Result<Vec<Instruction>, Error>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Operation`
[INFO] [stdout]    --> src/codegen/gen.rs:326:51
[INFO] [stdout]     |
[INFO] [stdout] 326 |     use super::super::super::parser::{Atom, Expr, Operation, Type};
[INFO] [stdout]     |                                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Lines`
[INFO] [stdout]  --> src/lexer/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Lines;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lexer/mod.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         try!(r.read_to_string(&mut contents));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:194:32
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   '0'...'9' => self.lex_const(true),
[INFO] [stdout]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:300:20
[INFO] [stdout]     |
[INFO] [stdout] 300 |                 '0'...'9' => self.lex_const(false),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:20
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:301:32
[INFO] [stdout]     |
[INFO] [stdout] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:338:20
[INFO] [stdout]     |
[INFO] [stdout] 338 |                 '0'...'9' => val.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:20
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:339:32
[INFO] [stdout]     |
[INFO] [stdout] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:20
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:32
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer/mod.rs:354:44
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stdout]     |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         try!(write!(f, r#"Function {:?} ( "#, self.name));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/parser/mod.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             try!(write!(f, r"{:?} {:?} ", param.typ, param.name));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Keyword`, `TokenAt`
[INFO] [stdout]  --> src/parser/expr.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::{Delimiter, Keyword, Operator, Token, TokenAt};
[INFO] [stdout]   |                        ^^^^^^^                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/main.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |         Err((t, e)) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut machine = vm::Machine::new(&bytes);
[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: `b`
[INFO] [stdout]   --> src/codegen/mod.rs:33:23
[INFO] [stdout]    |
[INFO] [stdout] 33 |     funcs.sort_by(|a, b| if a.name == "main" {
[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]   --> src/codegen/gen.rs:28:21
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 for a in args.iter() {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/codegen/gen.rs:254:19
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn typ(&self, ctx: &mut Context) -> Result<Type, Error> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:278:31
[INFO] [stdout]     |
[INFO] [stdout] 278 |                         Some(&c) => Err(ErrorVariant::Expected('&')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:290:31
[INFO] [stdout]     |
[INFO] [stdout] 290 |                         Some(&c) => Err(ErrorVariant::Expected('|')),
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/lexer/mod.rs:309:17
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 c => return Err((tokens, self.error(ErrorVariant::UnknownCharacter))),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remain`
[INFO] [stdout]    --> src/parser/mod.rs:106:20
[INFO] [stdout]     |
[INFO] [stdout] 106 |             (None, remain) => return Err(()),
[INFO] [stdout]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_remain`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `push_symbol` is never used
[INFO] [stdout]    --> src/codegen/mod.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 87  | impl<'a> Context<'a> {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 136 |     fn push_symbol(&mut self, symbol: Symbol) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |             write!(stderr(), "Usage: ./mylang [filename]");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             write!(stderr(), "Error while opening {}: {}", filename, e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             write!(stderr(), "Lexer I/O error: {:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             write!(stderr(), "{}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             write!(stderr(), "Syntax error.");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:65:13
[INFO] [stdout]    |
[INFO] [stdout] 65 |             write!(stderr(), "{:?}", e);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         write!(f, ")\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/parser/mod.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         write!(f, "{:#?}\n", self.block);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:53:41
[INFO] [stdout]    |
[INFO] [stdout] 53 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/parser/expr.rs:82:41
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stdout]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "bb90df947ffac643094f37eedbc3223c1992510f81bb13a3f189abd7200406f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb90df947ffac643094f37eedbc3223c1992510f81bb13a3f189abd7200406f1", kill_on_drop: false }`
[INFO] [stdout] bb90df947ffac643094f37eedbc3223c1992510f81bb13a3f189abd7200406f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a7ce5ff9ae9d671423a81a0c8a44b196e011f6223fb04b1bf1a6fc2c5dfd361d
[INFO] running `Command { std: "docker" "start" "-a" "a7ce5ff9ae9d671423a81a0c8a44b196e011f6223fb04b1bf1a6fc2c5dfd361d", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Entry`
[INFO] [stderr]  --> src/codegen/mod.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::hash_map::{Entry, HashMap};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/codegen/mod.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             try!(writer.write(&buf));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stderr]   --> src/codegen/gen.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn gen(&self, &mut Context) -> Result<Vec<Instruction>, Error>;
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Context`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stderr]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stderr]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Operation`
[INFO] [stderr]    --> src/codegen/gen.rs:326:51
[INFO] [stderr]     |
[INFO] [stderr] 326 |     use super::super::super::parser::{Atom, Expr, Operation, Type};
[INFO] [stderr]     |                                                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Lines`
[INFO] [stderr]  --> src/lexer/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::Lines;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/lexer/mod.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |         try!(r.read_to_string(&mut contents));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:194:32
[INFO] [stderr]     |
[INFO] [stderr] 194 | ...                   '0'...'9' => self.lex_const(true),
[INFO] [stderr]     |                          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:300:20
[INFO] [stderr]     |
[INFO] [stderr] 300 |                 '0'...'9' => self.lex_const(false),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:301:20
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:301:32
[INFO] [stderr]     |
[INFO] [stderr] 301 |                 'A'...'Z' | 'a'...'z' => self.lex_ident(),
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:338:20
[INFO] [stderr]     |
[INFO] [stderr] 338 |                 '0'...'9' => val.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:339:20
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:339:32
[INFO] [stderr]     |
[INFO] [stderr] 339 |                 'A'...'Z' | 'a'...'z' => return Err(ErrorVariant::UnknownCharacter),
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:354:20
[INFO] [stderr]     |
[INFO] [stderr] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:354:32
[INFO] [stderr]     |
[INFO] [stderr] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/lexer/mod.rs:354:44
[INFO] [stderr]     |
[INFO] [stderr] 354 |                 'A'...'Z' | 'a'...'z' | '0'...'9' => ident.push(self.chars.next().unwrap()),
[INFO] [stderr]     |                                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/parser/mod.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         try!(write!(f, r#"Function {:?} ( "#, self.name));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/parser/mod.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |             try!(write!(f, r"{:?} {:?} ", param.typ, param.name));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Keyword`, `TokenAt`
[INFO] [stderr]  --> src/parser/expr.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::{Delimiter, Keyword, Operator, Token, TokenAt};
[INFO] [stderr]   |                        ^^^^^^^                   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/main.rs:44:14
[INFO] [stderr]    |
[INFO] [stderr] 44 |         Err((t, e)) => {
[INFO] [stderr]    |              ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |     let mut machine = vm::Machine::new(&bytes);
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/codegen/mod.rs:33:23
[INFO] [stderr]    |
[INFO] [stderr] 33 |     funcs.sort_by(|a, b| if a.name == "main" {
[INFO] [stderr]    |                       ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/codegen/gen.rs:28:21
[INFO] [stderr]    |
[INFO] [stderr] 28 |                 for a in args.iter() {
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/codegen/gen.rs:254:19
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn typ(&self, ctx: &mut Context) -> Result<Type, Error> {
[INFO] [stderr]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lexer/mod.rs:278:31
[INFO] [stderr]     |
[INFO] [stderr] 278 |                         Some(&c) => Err(ErrorVariant::Expected('&')),
[INFO] [stderr]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lexer/mod.rs:290:31
[INFO] [stderr]     |
[INFO] [stderr] 290 |                         Some(&c) => Err(ErrorVariant::Expected('|')),
[INFO] [stderr]     |                               ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lexer/mod.rs:309:17
[INFO] [stderr]     |
[INFO] [stderr] 309 |                 c => return Err((tokens, self.error(ErrorVariant::UnknownCharacter))),
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remain`
[INFO] [stderr]    --> src/parser/mod.rs:106:20
[INFO] [stderr]     |
[INFO] [stderr] 106 |             (None, remain) => return Err(()),
[INFO] [stderr]     |                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_remain`
[INFO] [stderr] 
[INFO] [stderr] warning: method `push_symbol` is never used
[INFO] [stderr]    --> src/codegen/mod.rs:136:8
[INFO] [stderr]     |
[INFO] [stderr] 87  | impl<'a> Context<'a> {
[INFO] [stderr]     | -------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 136 |     fn push_symbol(&mut self, symbol: Symbol) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |             write!(stderr(), "Usage: ./mylang [filename]");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             write!(stderr(), "Error while opening {}: {}", filename, e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |             write!(stderr(), "Lexer I/O error: {:?}", e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             write!(stderr(), "{}", e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             write!(stderr(), "Syntax error.");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             write!(stderr(), "{:?}", e);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/parser/mod.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |         write!(f, ")\n");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/parser/mod.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         write!(f, "{:#?}\n", self.block);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/parser/expr.rs:53:41
[INFO] [stderr]    |
[INFO] [stderr] 53 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stderr]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/parser/expr.rs:82:41
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Some(&Token::Op(ref o)) => o.clone(),
[INFO] [stderr]    |                                         ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `lexer::Operator` does not implement `Clone`, so calling `clone` on `&lexer::Operator` copies the reference, which does not do anything and can be removed
[INFO] [stderr] 
[INFO] [stderr] warning: `mylang` (bin "mylang" test) generated 39 warnings (run `cargo fix --bin "mylang" --tests` to apply 26 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/mylang-cb3891b8148ab5f5)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test codegen::test::test_decode ... ok
[INFO] [stdout] test codegen::test::test_encode ... ok
[INFO] [stdout] test codegen::gen::test::test_expr_typed ... ok
[INFO] [stdout] test codegen::test::test_gen_fncall ... ok
[INFO] [stdout] test codegen::test::test_gen_expr ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_block ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_assign ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_expr ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_decl ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_if ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_return ... ok
[INFO] [stdout] test codegen::test::test_gen_stmt_while ... ok
[INFO] [stdout] test codegen::test::test_integration ... ok
[INFO] [stdout] test codegen::test::test_opcode ... ok
[INFO] [stdout] test codegen::test::test_program_encode ... ok
[INFO] [stdout] test codegen::test::test_symbol_stack ... ok
[INFO] [stdout] test codegen::test::test_typed ... ok
[INFO] [stdout] test lexer::test::test_lex_const ... ok
[INFO] [stdout] test lexer::test::test_lex_delimiters ... ok
[INFO] [stdout] test lexer::test::test_lex_ident ... ok
[INFO] [stdout] test lexer::test::test_lex_multiline_comment ... ok
[INFO] [stdout] test lexer::test::test_lex_line_comment ... ok
[INFO] [stdout] test lexer::test::test_lex_keyword ... ok
[INFO] [stdout] test lexer::test::test_lex_multiline_comment_no_end ... ok
[INFO] [stdout] test lexer::test::test_lex_op ... ok
[INFO] [stdout] test lexer::test::test_lexer_errors ... ok
[INFO] [stdout] test parser::test::test_parse_assignstmt ... ok
[INFO] [stdout] test lexer::test::test_lex_str ... ok
[INFO] [stdout] test parser::test::test_parse_break ... ok
[INFO] [stdout] test parser::test::test_parse_block ... ok
[INFO] [stdout] test parser::test::test_parse_atom ... ok
[INFO] [stdout] test parser::test::test_parse ... ok
[INFO] [stdout] test parser::test::test_parse_comparison ... ok
[INFO] [stdout] test parser::test::test_parse_declstmt ... ok
[INFO] [stdout] test parser::test::test_parse_logexpr ... ok
[INFO] [stdout] test parser::test::test_parse_product ... ok
[INFO] [stdout] test parser::test::test_parse_ifstmt ... ok
[INFO] [stdout] test parser::test::test_parse_sum ... ok
[INFO] [stdout] test parser::test::test_parse_whilestmt ... ok
[INFO] [stdout] test vm::test::test_jmpz ... ok
[INFO] [stdout] test parser::test::test_parse_stmt ... ok
[INFO] [stdout] test parser::test::test_parse_fn ... ok
[INFO] [stdout] test vm::test::test_vm_call ... ok
[INFO] [stdout] test vm::test::test_vm_push_pop ... ok
[INFO] [stdout] test vm::test::test_jmp ... ok
[INFO] [stdout] test vm::test::test_arithmetic ... ok
[INFO] [stdout] test vm::test::test_neq ... ok
[INFO] [stdout] test vm::test::test_vm_retw ... ok
[INFO] [stdout] test vm::test::test_eq ... ok
[INFO] [stdout] test vm::test::test_vm_ret ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- vm::test::test_vm_ret stdout ----
[INFO] [stdout] thread 'vm::test::test_vm_ret' panicked at src/vm/test.rs:64:5:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 0
[INFO] [stdout]  right: 57005
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55594bcc9976 - std::backtrace_rs::backtrace::libunwind::trace::h261606ad26a499c1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55594bcc9976 - std::backtrace_rs::backtrace::trace_unsynchronized::hd183f0625477fb28
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55594bcc9976 - std::sys_common::backtrace::_print_fmt::hd7f8fef21b4eda67
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55594bcc9976 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h623d9b51f2f453f1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55594bcf2ad0 - core::fmt::rt::Argument::fmt::h9f417ac76a86f368
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55594bcf2ad0 - core::fmt::write::hc9b6faf4ac2aeff7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55594bcc73df - std::io::Write::write_fmt::he04625a3a989fec3
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55594bcc9754 - std::sys_common::backtrace::_print::hd5d66399c7df88a2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55594bcc9754 - std::sys_common::backtrace::print::he81ed2da642d37e5
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55594bccb4c7 - std::panicking::default_hook::{{closure}}::h85773f4fa117163d
[INFO] [stdout]   10:     0x55594bccb1ad - std::panicking::default_hook::h6a1694a91d09b278
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55594bc9b387 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h616ac37fa3cd6c8f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55594bc9b387 - test::test_main::{{closure}}::h00d84697cefdcbb6
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55594bccbae6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcb3fe3b9bb537ba8
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55594bccbae6 - std::panicking::rust_panic_with_hook::h0a7ad96e90f7145b
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55594bccb832 - std::panicking::begin_panic_handler::{{closure}}::h7919090525c6485e
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55594bcc9e76 - std::sys_common::backtrace::__rust_end_short_backtrace::hf3289479464f7dfe
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55594bccb590 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55594bc00cd5 - core::panicking::panic_fmt::hcc9f77c5c132af55
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55594bc0110b - core::panicking::assert_failed_inner::h9f13e27dd63c3a08
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x55594bc3b45e - core::panicking::assert_failed::h66f8e0082a8bd74d
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x55594bc2f332 - mylang::vm::test::test_vm_ret::h95a4196a263b24e1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/vm/test.rs:64:5
[INFO] [stdout]   22:     0x55594bc2ef97 - mylang::vm::test::test_vm_ret::{{closure}}::h0a57ba3fcc175447
[INFO] [stdout]                                at /opt/rustwide/workdir/src/vm/test.rs:56:17
[INFO] [stdout]   23:     0x55594bc56216 - core::ops::function::FnOnce::call_once::h4c3b9d4bec936a73
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55594bca0c5f - core::ops::function::FnOnce::call_once::hd64d26f405258157
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55594bca0c5f - test::__rust_begin_short_backtrace::he21b0b7a6d731bf9
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x55594bc9f9e1 - test::run_test_in_process::{{closure}}::hf5c73986d7bdfde2
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x55594bc9f9e1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330011ad032aadc0
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55594bc9f9e1 - std::panicking::try::do_call::he61b0a958b795a41
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55594bc9f9e1 - std::panicking::try::h7309da130f906eb7
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55594bc9f9e1 - std::panic::catch_unwind::hc5c3a06fdaf0a92a
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55594bc9f9e1 - test::run_test_in_process::h7e7b7c71c3324e0f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x55594bc9f9e1 - test::run_test::{{closure}}::h1f509f28f5cf20b1
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x55594bc66d16 - test::run_test::{{closure}}::h1754218abf443f6d
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x55594bc66d16 - std::sys_common::backtrace::__rust_begin_short_backtrace::h2ee174b9d5954948
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55594bc6bd77 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hf60bee9c1a17ef09
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55594bc6bd77 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h33d0dddec5216160
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55594bc6bd77 - std::panicking::try::do_call::h144b3048b546f835
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x55594bc6bd77 - std::panicking::try::h978244d04646189f
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x55594bc6bd77 - std::panic::catch_unwind::hdf436369d188fe86
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55594bc6bd77 - std::thread::Builder::spawn_unchecked_::{{closure}}::h87329cbdd33c79ec
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55594bc6bd77 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h401abbe67897d450
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55594bcd0595 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5d7c8f150ab9c84c
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55594bcd0595 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h570d5b005c242c15
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55594bcd0595 - std::sys::unix::thread::Thread::new::thread_start::h36b0a20c0b2361ad
[INFO] [stdout]                                at /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7fbf29945ac3 - <unknown>
[INFO] [stdout]   46:     0x7fbf299d6bf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     vm::test::test_vm_ret
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 49 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin mylang`
[INFO] running `Command { std: "docker" "inspect" "a7ce5ff9ae9d671423a81a0c8a44b196e011f6223fb04b1bf1a6fc2c5dfd361d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7ce5ff9ae9d671423a81a0c8a44b196e011f6223fb04b1bf1a6fc2c5dfd361d", kill_on_drop: false }`
[INFO] [stdout] a7ce5ff9ae9d671423a81a0c8a44b196e011f6223fb04b1bf1a6fc2c5dfd361d
