[INFO] cloning repository https://github.com/kdjosk/lalr-parser-gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kdjosk/lalr-parser-gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdjosk%2Flalr-parser-gen", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 35af77675f48907e990ec05419b52d103f1e5b07
[INFO] testing kdjosk/lalr-parser-gen against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdjosk%2Flalr-parser-gen" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kdjosk/lalr-parser-gen
[INFO] finished tweaking git repo https://github.com/kdjosk/lalr-parser-gen
[INFO] tweaked toml for git repo https://github.com/kdjosk/lalr-parser-gen written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kdjosk/lalr-parser-gen on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kdjosk/lalr-parser-gen 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "829de8ef009b2a1271c8a7b9675739f723319b47007f6fb7f9f562883520e261", kill_on_drop: false }`
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[INFO] [stdout] 614fdac3498753b230ba69ffdc5bab81e2ade8737b1fda26e3eabb492df59142
[INFO] running `Command { std: "docker" "start" "-a" "614fdac3498753b230ba69ffdc5bab81e2ade8737b1fda26e3eabb492df59142", kill_on_drop: false }`
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[INFO] [stderr]    Compiling enum-map v1.1.1
[INFO] [stderr]    Compiling lexer v0.1.0 (/opt/rustwide/workdir/lexer)
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> lexer/src/source.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> lexer/src/source.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{self, File};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> lexer/src/source.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `enum_map::Enum`
[INFO] [stdout]  --> lexer/src/tokens.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use enum_map::Enum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> lexer/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> lexer/src/lib.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{mem, panic};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_yaml v0.8.23
[INFO] [stderr]    Compiling serde-value v0.7.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling config v0.11.0
[INFO] [stderr]    Compiling parser v0.1.0 (/opt/rustwide/workdir/parser)
[INFO] [stdout] warning: unused import: `SetItem`
[INFO] [stdout]  --> parser/src/lalr_parsing_tables.rs:2:48
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lookaheads_table::{LookaheadsTable, SetItem};
[INFO] [stdout]   |                                                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayLength` and `GenericArray`
[INFO] [stdout]  --> parser/src/lalr_parsing_tables.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use generic_array::{ArrayLength, GenericArray};
[INFO] [stdout]   |                     ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::__private::de`
[INFO] [stdout]  --> parser/src/lalr_parsing_tables.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::__private::de;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]   --> parser/src/lalr_parsing_tables.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::hash::Hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::*`
[INFO] [stdout]   --> parser/src/lalr_parsing_tables.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::io::{self, prelude::*};
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `mem`
[INFO] [stdout]   --> parser/src/lalr_parsing_tables.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::{fmt, mem, panic, vec};
[INFO] [stdout]    |           ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]  --> parser/src/lexer_wrapper.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lazy_static::lazy_static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> parser/src/lexer_wrapper.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> parser/src/lexer_wrapper.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> parser/src/lr_parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]  --> parser/src/lr_parser.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> parser/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `t` is never read
[INFO] [stdout]   --> parser/src/lexer_wrapper.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut t = Token::Empty;
[INFO] [stdout]    |                     ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 19 |         loop {
[INFO] [stdout] 20 |             t = self.lexer.next_token();
[INFO] [stdout]    |             - `t` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ptree v0.4.0
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]  --> parser/src/lr0_items.rs:9:41
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(grammar: &'a Grammar) -> LR0Items {
[INFO] [stdout]   |                          --             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                          |
[INFO] [stdout]   |                          the lifetime is named here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(grammar: &'a Grammar) -> LR0Items<'a> {
[INFO] [stdout]   |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] warning: unused import: `ast_printer::AstPrinter`
[INFO] [stdout]  --> interpreter/src/visitor.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{ast::*, ast_printer::AstPrinter};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> interpreter/src/interpreter.rs:751:30
[INFO] [stdout]     |
[INFO] [stdout] 751 |     fn visit_name(&mut self, n: &Name) {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> interpreter/src/interpreter.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         ctx.assign_to_variable(name.clone(), value.clone());
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let _ = ctx.assign_to_variable(name.clone(), value.clone());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dflow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | use parser::lalr_parsing_tables::{self, LALRParsingTables, LALRParsingTablesGenerator};
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Terminal`
[INFO] [stdout]  --> src/main.rs:8:63
[INFO] [stdout]   |
[INFO] [stdout] 8 | use parser::parse_tree::{Labeled, Nonterminal, ParseTreeNode, Terminal};
[INFO] [stdout]   |                                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]   --> src/main.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use sha2::{Digest, Sha256};
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]   --> src/main.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use sha2::{Digest, Sha256};
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/main.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (output, root_node) = parser.parse();
[INFO] [stdout]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockSource` is never constructed
[INFO] [stdout]   --> src/main.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct MockSource {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl MockSource {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(mut symbols: Vec<Symbol>) -> MockSource {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 32.34s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "614fdac3498753b230ba69ffdc5bab81e2ade8737b1fda26e3eabb492df59142", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "614fdac3498753b230ba69ffdc5bab81e2ade8737b1fda26e3eabb492df59142", kill_on_drop: false }`
[INFO] [stdout] 614fdac3498753b230ba69ffdc5bab81e2ade8737b1fda26e3eabb492df59142
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74e57940d1daa83d51ca45dc9674c9147098581d529314acdfab8221570289b4
[INFO] running `Command { std: "docker" "start" "-a" "74e57940d1daa83d51ca45dc9674c9147098581d529314acdfab8221570289b4", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> lexer/src/source.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> lexer/src/source.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::{self, File};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> lexer/src/source.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `enum_map::Enum`
[INFO] [stdout]  --> lexer/src/tokens.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use enum_map::Enum;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> lexer/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mem`
[INFO] [stdout]  --> lexer/src/lib.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{mem, panic};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SetItem`
[INFO] [stdout]  --> parser/src/lalr_parsing_tables.rs:2:48
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lookaheads_table::{LookaheadsTable, SetItem};
[INFO] [stdout]   |                                                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ArrayLength` and `GenericArray`
[INFO] [stdout]  --> parser/src/lalr_parsing_tables.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use generic_array::{ArrayLength, GenericArray};
[INFO] [stdout]   |                     ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::__private::de`
[INFO] [stdout]  --> parser/src/lalr_parsing_tables.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde::__private::de;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::Hash`
[INFO] [stdout]   --> parser/src/lalr_parsing_tables.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::hash::Hash;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::*`
[INFO] [stdout]   --> parser/src/lalr_parsing_tables.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::io::{self, prelude::*};
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt` and `mem`
[INFO] [stdout]   --> parser/src/lalr_parsing_tables.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::{fmt, mem, panic, vec};
[INFO] [stdout]    |           ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dflow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]  --> parser/src/lexer_wrapper.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use lazy_static::lazy_static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> parser/src/lexer_wrapper.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> parser/src/lexer_wrapper.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> parser/src/lr_parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]  --> parser/src/lr_parser.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> parser/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `t` is never read
[INFO] [stdout]   --> parser/src/lexer_wrapper.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut t = Token::Empty;
[INFO] [stdout]    |                     ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 19 |         loop {
[INFO] [stdout] 20 |             t = self.lexer.next_token();
[INFO] [stdout]    |             - `t` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]  --> parser/src/lr0_items.rs:9:41
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(grammar: &'a Grammar) -> LR0Items {
[INFO] [stdout]   |                          --             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                          |
[INFO] [stdout]   |                          the lifetime is named here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(grammar: &'a Grammar) -> LR0Items<'a> {
[INFO] [stdout]   |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast_printer::AstPrinter`
[INFO] [stdout]  --> interpreter/src/visitor.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{ast::*, ast_printer::AstPrinter};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> interpreter/src/interpreter.rs:751:30
[INFO] [stdout]     |
[INFO] [stdout] 751 |     fn visit_name(&mut self, n: &Name) {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> interpreter/src/interpreter.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         ctx.assign_to_variable(name.clone(), value.clone());
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let _ = ctx.assign_to_variable(name.clone(), value.clone());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:5:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | use parser::lalr_parsing_tables::{self, LALRParsingTables, LALRParsingTablesGenerator};
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Terminal`
[INFO] [stdout]  --> src/main.rs:8:63
[INFO] [stdout]   |
[INFO] [stdout] 8 | use parser::parse_tree::{Labeled, Nonterminal, ParseTreeNode, Terminal};
[INFO] [stdout]   |                                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sha256`
[INFO] [stdout]   --> src/main.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use sha2::{Digest, Sha256};
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Digest`
[INFO] [stdout]   --> src/main.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use sha2::{Digest, Sha256};
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/main.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let (output, root_node) = parser.parse();
[INFO] [stdout]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MockSource` is never constructed
[INFO] [stdout]   --> src/main.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct MockSource {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl MockSource {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 19 |     pub fn new(mut symbols: Vec<Symbol>) -> MockSource {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "74e57940d1daa83d51ca45dc9674c9147098581d529314acdfab8221570289b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74e57940d1daa83d51ca45dc9674c9147098581d529314acdfab8221570289b4", kill_on_drop: false }`
[INFO] [stdout] 74e57940d1daa83d51ca45dc9674c9147098581d529314acdfab8221570289b4
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6846b1e8cbb3723735dda2cbe05226ebbc9aaf8614a5a8eb28c452685c0f52b5
[INFO] running `Command { std: "docker" "start" "-a" "6846b1e8cbb3723735dda2cbe05226ebbc9aaf8614a5a8eb28c452685c0f52b5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> lexer/src/source.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> lexer/src/source.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::{self, File};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> lexer/src/source.rs:3:27
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{self, Read, Write};
[INFO] [stderr]   |                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `enum_map::Enum`
[INFO] [stderr]  --> lexer/src/tokens.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use enum_map::Enum;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> lexer/src/lib.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mem`
[INFO] [stderr]  --> lexer/src/lib.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::{mem, panic};
[INFO] [stderr]   |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `lexer` (lib) generated 6 warnings (run `cargo fix --lib -p lexer` to apply 6 suggestions)
[INFO] [stderr] warning: unused import: `SetItem`
[INFO] [stderr]  --> parser/src/lalr_parsing_tables.rs:2:48
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::lookaheads_table::{LookaheadsTable, SetItem};
[INFO] [stderr]   |                                                ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ArrayLength` and `GenericArray`
[INFO] [stderr]  --> parser/src/lalr_parsing_tables.rs:4:21
[INFO] [stderr]   |
[INFO] [stderr] 4 | use generic_array::{ArrayLength, GenericArray};
[INFO] [stderr]   |                     ^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde::__private::de`
[INFO] [stderr]  --> parser/src/lalr_parsing_tables.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use serde::__private::de;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]   --> parser/src/lalr_parsing_tables.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::hash::Hash;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `prelude::*`
[INFO] [stderr]   --> parser/src/lalr_parsing_tables.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::io::{self, prelude::*};
[INFO] [stderr]    |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `fmt` and `mem`
[INFO] [stderr]   --> parser/src/lalr_parsing_tables.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::{fmt, mem, panic, vec};
[INFO] [stderr]    |           ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `lazy_static::lazy_static`
[INFO] [stderr]  --> parser/src/lexer_wrapper.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use lazy_static::lazy_static;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> parser/src/lexer_wrapper.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> parser/src/lexer_wrapper.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::any::Any`
[INFO] [stderr]  --> parser/src/lr_parser.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::any::Any;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]  --> parser/src/lr_parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::fmt::Display;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> parser/src/lib.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `t` is never read
[INFO] [stderr]   --> parser/src/lexer_wrapper.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let mut t = Token::Empty;
[INFO] [stderr]    |                     ^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stderr] 19 |         loop {
[INFO] [stderr] 20 |             t = self.lexer.next_token();
[INFO] [stderr]    |             - `t` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]  --> parser/src/lr0_items.rs:9:41
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(grammar: &'a Grammar) -> LR0Items {
[INFO] [stderr]   |                          --             ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]   |                          |
[INFO] [stderr]   |                          the lifetime is named here
[INFO] [stderr]   |
[INFO] [stderr]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new(grammar: &'a Grammar) -> LR0Items<'a> {
[INFO] [stderr]   |                                                 ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `parser` (lib) generated 14 warnings (run `cargo fix --lib -p parser` to apply 12 suggestions)
[INFO] [stderr] warning: unused import: `ast_printer::AstPrinter`
[INFO] [stderr]  --> interpreter/src/visitor.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::{ast::*, ast_printer::AstPrinter};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]    --> interpreter/src/interpreter.rs:751:30
[INFO] [stderr]     |
[INFO] [stderr] 751 |     fn visit_name(&mut self, n: &Name) {
[INFO] [stderr]     |                              ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> interpreter/src/interpreter.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |         ctx.assign_to_variable(name.clone(), value.clone());
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 167 |         let _ = ctx.assign_to_variable(name.clone(), value.clone());
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `interpreter` (lib) generated 3 warnings (run `cargo fix --lib -p interpreter` to apply 2 suggestions)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:5:35
[INFO] [stderr]   |
[INFO] [stderr] 5 | use parser::lalr_parsing_tables::{self, LALRParsingTables, LALRParsingTablesGenerator};
[INFO] [stderr]   |                                   ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Terminal`
[INFO] [stderr]  --> src/main.rs:8:63
[INFO] [stderr]   |
[INFO] [stderr] 8 | use parser::parse_tree::{Labeled, Nonterminal, ParseTreeNode, Terminal};
[INFO] [stderr]   |                                                               ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Sha256`
[INFO] [stderr]   --> src/main.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 | use sha2::{Digest, Sha256};
[INFO] [stderr]    |                    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Digest`
[INFO] [stderr]   --> src/main.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | use sha2::{Digest, Sha256};
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/main.rs:59:10
[INFO] [stderr]    |
[INFO] [stderr] 59 |     let (output, root_node) = parser.parse();
[INFO] [stderr]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MockSource` is never constructed
[INFO] [stderr]   --> src/main.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct MockSource {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/main.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | impl MockSource {
[INFO] [stderr]    | --------------- associated function in this implementation
[INFO] [stderr] 19 |     pub fn new(mut symbols: Vec<Symbol>) -> MockSource {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `dflow` (bin "dflow" test) generated 7 warnings (run `cargo fix --bin "dflow" -p dflow --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dflow-4aa7bc0ec8fe1f5d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/dflow-c9fb4cee7a22bf55)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dflow
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6846b1e8cbb3723735dda2cbe05226ebbc9aaf8614a5a8eb28c452685c0f52b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6846b1e8cbb3723735dda2cbe05226ebbc9aaf8614a5a8eb28c452685c0f52b5", kill_on_drop: false }`
[INFO] [stdout] 6846b1e8cbb3723735dda2cbe05226ebbc9aaf8614a5a8eb28c452685c0f52b5
