[INFO] cloning repository https://github.com/wormtql/rusty-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wormtql/rusty-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwormtql%2Frusty-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwormtql%2Frusty-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b89732ee14c9ee5ed1f9eead2e8d7838cd850d0
[INFO] testing wormtql/rusty-parser against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwormtql%2Frusty-parser" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wormtql/rusty-parser on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wormtql/rusty-parser
[INFO] finished tweaking git repo https://github.com/wormtql/rusty-parser
[INFO] tweaked toml for git repo https://github.com/wormtql/rusty-parser written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/wormtql/rusty-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9af5034bf86866225b853166c30bf51ee98b7678e2ddb8b77fd9f71dc0253410
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9af5034bf86866225b853166c30bf51ee98b7678e2ddb8b77fd9f71dc0253410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9af5034bf86866225b853166c30bf51ee98b7678e2ddb8b77fd9f71dc0253410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9af5034bf86866225b853166c30bf51ee98b7678e2ddb8b77fd9f71dc0253410", kill_on_drop: false }`
[INFO] [stdout] 9af5034bf86866225b853166c30bf51ee98b7678e2ddb8b77fd9f71dc0253410
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4a52f695e4c9e766d05207859101cc7c3831ebc46af94f25ede5c7a051a9061b
[INFO] running `Command { std: "docker" "start" "-a" "4a52f695e4c9e766d05207859101cc7c3831ebc46af94f25ede5c7a051a9061b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling grammar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/ll_table/mod.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NonLeafNode`
[INFO] [stdout]  --> src/ll_table/mod.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::parse_tree::{ParseTree, NonLeafNode};
[INFO] [stdout]   |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lr_table/mod.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lr_table/lalr_table.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/lr0/lr0_item_set_family.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]  --> src/lr0/lr0_item_set_family.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::thread_rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/lr1/lr1_item_set_family.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]   --> src/lr1/lr1_item_set_family.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::thread_rng;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::lr1_item_set::LR1ItemSet`
[INFO] [stdout]  --> src/lr1/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use self::lr1_item_set::LR1ItemSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::grammar::letter::Letter`
[INFO] [stdout]  --> src/parse_tree/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::grammar::letter::Letter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ActionTableItem`, `LRTable`
[INFO] [stdout]  --> src/parse_tree/mod.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::lr_table::{LRTable, ActionTableItem};
[INFO] [stdout]   |                       ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenStream`
[INFO] [stdout]  --> src/parse_tree/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/automaton/dfa.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         'bigloop: loop {
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             'everysplit: for p in split.iter() {
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 'everyletter: for letter in self.letters.iter() {
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/optimization/du.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree_stack`
[INFO] [stdout]   --> src/ll_table/mod.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lr1/mod.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     for (i, item_set) in data.item_sets.iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimization/dominant.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     for i in 0..lines.len() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uses`
[INFO] [stdout]   --> src/optimization/ud.rs:56:27
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for (point, left, uses) in block.iter() {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_uses`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grammar/letter.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut temp = match self {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ll_table/mod.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr_table/mod.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr_table/mod.rs:292:13
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lr_table/lalr_table.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr0/lr0_item_set_family.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let mut shuffle = &mut signs[..];
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr1/lr1_item_set_family.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             let mut shuffle = &mut signs[..];
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parse_tree/mod.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 state.serialize_field("children", &n.children);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::first_follow_set::FirstFollowSet`
[INFO] [stdout]  --> src/bin/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use grammar::first_follow_set::FirstFollowSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::lr0::lr0_item_set_family::LR0ItemSetFamily`
[INFO] [stdout]  --> src/bin/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use grammar::lr0::lr0_item_set_family::LR0ItemSetFamily;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::lr1::lr1_item_set_family::LR1ItemSetFamily`
[INFO] [stdout]  --> src/bin/parser.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use grammar::lr1::lr1_item_set_family::LR1ItemSetFamily;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `lalr1`, `ll1`
[INFO] [stdout]   --> src/bin/parser.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 | use grammar::{lr0, slr1, ll1, lr1, lalr1};
[INFO] [stdout]    |                          ^^^       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::parse_tree::ParseTree`
[INFO] [stdout]   --> src/bin/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use grammar::parse_tree::ParseTree;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::lr_table::LRTable`
[INFO] [stdout]   --> src/bin/exam.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use grammar::lr_table::LRTable;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::parse_tree::ParseTree`
[INFO] [stdout]   --> src/bin/exam.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use grammar::parse_tree::ParseTree;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/bin/exam.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/bin/exam.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/parser.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let mut grammar = Grammar::from_advanced_file(&f).unwrap();
[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 `std::result::Result` that must be used
[INFO] [stdout]    --> src/bin/parser.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |         file.write_all(serialized.as_bytes());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bin/parser.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         outf.write_all(json.as_bytes());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]   --> src/bin/exam.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parse_tree`
[INFO] [stdout]    --> src/bin/exam.rs:360:14
[INFO] [stdout]     |
[INFO] [stdout] 360 |         let (parse_tree, table) = ll_table.analysis_with_process(&token_stream, g.origin.clone());
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parse_tree`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/exam.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     io::stdin().read_line(&mut input);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "4a52f695e4c9e766d05207859101cc7c3831ebc46af94f25ede5c7a051a9061b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a52f695e4c9e766d05207859101cc7c3831ebc46af94f25ede5c7a051a9061b", kill_on_drop: false }`
[INFO] [stdout] 4a52f695e4c9e766d05207859101cc7c3831ebc46af94f25ede5c7a051a9061b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10f825314bf09518e12b7f2e63f44119ae5aadb6db25e8e14f92604a63762ba2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "10f825314bf09518e12b7f2e63f44119ae5aadb6db25e8e14f92604a63762ba2", kill_on_drop: false }`
[INFO] [stderr]    Compiling grammar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/ll_table/mod.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NonLeafNode`
[INFO] [stdout]  --> src/ll_table/mod.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::parse_tree::{ParseTree, NonLeafNode};
[INFO] [stdout]   |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lr_table/mod.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lr_table/lalr_table.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/lr0/lr0_item_set_family.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]  --> src/lr0/lr0_item_set_family.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::thread_rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/lr1/lr1_item_set_family.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]   --> src/lr1/lr1_item_set_family.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::thread_rng;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::lr1_item_set::LR1ItemSet`
[INFO] [stdout]  --> src/lr1/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use self::lr1_item_set::LR1ItemSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::grammar::letter::Letter`
[INFO] [stdout]  --> src/parse_tree/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::grammar::letter::Letter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ActionTableItem`, `LRTable`
[INFO] [stdout]  --> src/parse_tree/mod.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::lr_table::{LRTable, ActionTableItem};
[INFO] [stdout]   |                       ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenStream`
[INFO] [stdout]  --> src/parse_tree/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/automaton/dfa.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         'bigloop: loop {
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             'everysplit: for p in split.iter() {
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 'everyletter: for letter in self.letters.iter() {
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/optimization/du.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree_stack`
[INFO] [stdout]   --> src/ll_table/mod.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lr1/mod.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     for (i, item_set) in data.item_sets.iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimization/dominant.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     for i in 0..lines.len() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uses`
[INFO] [stdout]   --> src/optimization/ud.rs:56:27
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for (point, left, uses) in block.iter() {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_uses`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grammar/letter.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut temp = match self {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ll_table/mod.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr_table/mod.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr_table/mod.rs:292:13
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lr_table/lalr_table.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr0/lr0_item_set_family.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let mut shuffle = &mut signs[..];
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr1/lr1_item_set_family.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             let mut shuffle = &mut signs[..];
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parse_tree/mod.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 state.serialize_field("children", &n.children);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::lr_table::LRTable`
[INFO] [stdout]   --> src/bin/exam.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use grammar::lr_table::LRTable;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::parse_tree::ParseTree`
[INFO] [stdout]   --> src/bin/exam.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use grammar::parse_tree::ParseTree;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/bin/exam.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]   --> src/bin/exam.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use std::fs;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::first_follow_set::FirstFollowSet`
[INFO] [stdout]  --> src/bin/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use grammar::first_follow_set::FirstFollowSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::lr0::lr0_item_set_family::LR0ItemSetFamily`
[INFO] [stdout]  --> src/bin/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use grammar::lr0::lr0_item_set_family::LR0ItemSetFamily;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::lr1::lr1_item_set_family::LR1ItemSetFamily`
[INFO] [stdout]  --> src/bin/parser.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use grammar::lr1::lr1_item_set_family::LR1ItemSetFamily;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `lalr1`, `ll1`
[INFO] [stdout]   --> src/bin/parser.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 | use grammar::{lr0, slr1, ll1, lr1, lalr1};
[INFO] [stdout]    |                          ^^^       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `grammar::parse_tree::ParseTree`
[INFO] [stdout]   --> src/bin/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use grammar::parse_tree::ParseTree;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/parser.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |             let mut grammar = Grammar::from_advanced_file(&f).unwrap();
[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 `std::result::Result` that must be used
[INFO] [stdout]    --> src/bin/parser.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |         file.write_all(serialized.as_bytes());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bin/parser.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 |         outf.write_all(json.as_bytes());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]   --> src/bin/exam.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use std::io::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parse_tree`
[INFO] [stdout]    --> src/bin/exam.rs:360:14
[INFO] [stdout]     |
[INFO] [stdout] 360 |         let (parse_tree, table) = ll_table.analysis_with_process(&token_stream, g.origin.clone());
[INFO] [stdout]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parse_tree`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/ll_table/mod.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NonLeafNode`
[INFO] [stdout]  --> src/ll_table/mod.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::parse_tree::{ParseTree, NonLeafNode};
[INFO] [stdout]   |                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lr_table/mod.rs:3:33
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Token`
[INFO] [stdout]  --> src/lr_table/lalr_table.rs:2:33
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::VecDeque`
[INFO] [stdout]  --> src/lr0/lr0_item_set_family.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::VecDeque;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]  --> src/lr0/lr0_item_set_family.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::thread_rng;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `VecDeque`
[INFO] [stdout]  --> src/lr1/lr1_item_set_family.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::collections::{HashMap, VecDeque};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::thread_rng`
[INFO] [stdout]   --> src/lr1/lr1_item_set_family.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use rand::thread_rng;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::lr1_item_set::LR1ItemSet`
[INFO] [stdout]  --> src/lr1/mod.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use self::lr1_item_set::LR1ItemSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::grammar::letter::Letter`
[INFO] [stdout]  --> src/parse_tree/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::grammar::letter::Letter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ActionTableItem`, `LRTable`
[INFO] [stdout]  --> src/parse_tree/mod.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::lr_table::{LRTable, ActionTableItem};
[INFO] [stdout]   |                       ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenStream`
[INFO] [stdout]  --> src/parse_tree/mod.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::token::{TokenStream, Token};
[INFO] [stdout]   |                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/automaton/dfa.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         'bigloop: loop {
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |             'everysplit: for p in split.iter() {
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/automaton/dfa.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 'everyletter: for letter in self.letters.iter() {
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils`
[INFO] [stdout]  --> src/optimization/du.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::utils;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/bin/exam.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     io::stdin().read_line(&mut input);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree_stack`
[INFO] [stdout]   --> src/ll_table/mod.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lr1/mod.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     for (i, item_set) in data.item_sets.iter().enumerate() {
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/optimization/dominant.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     for i in 0..lines.len() {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uses`
[INFO] [stdout]   --> src/optimization/ud.rs:56:27
[INFO] [stdout]    |
[INFO] [stdout] 56 |         for (point, left, uses) in block.iter() {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_uses`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grammar/letter.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let mut temp = match self {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ll_table/mod.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr_table/mod.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr_table/mod.rs:292:13
[INFO] [stdout]     |
[INFO] [stdout] 292 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lr_table/lalr_table.rs:95:13
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stdout]    |             ----^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr0/lr0_item_set_family.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let mut shuffle = &mut signs[..];
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lr1/lr1_item_set_family.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |             let mut shuffle = &mut signs[..];
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/parse_tree/mod.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 state.serialize_field("children", &n.children);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.20s
[INFO] running `Command { std: "docker" "inspect" "10f825314bf09518e12b7f2e63f44119ae5aadb6db25e8e14f92604a63762ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10f825314bf09518e12b7f2e63f44119ae5aadb6db25e8e14f92604a63762ba2", kill_on_drop: false }`
[INFO] [stdout] 10f825314bf09518e12b7f2e63f44119ae5aadb6db25e8e14f92604a63762ba2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 03e45f32031e14eafb80ac38a13e4bd05ab3cdd823ed6ab64c3da97d96bb6350
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "03e45f32031e14eafb80ac38a13e4bd05ab3cdd823ed6ab64c3da97d96bb6350", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/ll_table/mod.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NonLeafNode`
[INFO] [stderr]  --> src/ll_table/mod.rs:4:36
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::parse_tree::{ParseTree, NonLeafNode};
[INFO] [stderr]   |                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/lr_table/mod.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/lr_table/lalr_table.rs:2:33
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/lr0/lr0_item_set_family.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::thread_rng`
[INFO] [stderr]  --> src/lr0/lr0_item_set_family.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::thread_rng;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `VecDeque`
[INFO] [stderr]  --> src/lr1/lr1_item_set_family.rs:7:33
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::thread_rng`
[INFO] [stderr]   --> src/lr1/lr1_item_set_family.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::thread_rng;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::lr1_item_set::LR1ItemSet`
[INFO] [stderr]  --> src/lr1/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::lr1_item_set::LR1ItemSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::grammar::letter::Letter`
[INFO] [stderr]  --> src/parse_tree/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::grammar::letter::Letter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ActionTableItem`, `LRTable`
[INFO] [stderr]  --> src/parse_tree/mod.rs:5:23
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::lr_table::{LRTable, ActionTableItem};
[INFO] [stderr]   |                       ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenStream`
[INFO] [stderr]  --> src/parse_tree/mod.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils`
[INFO] [stderr]  --> src/automaton/dfa.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::utils;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/automaton/dfa.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         'bigloop: loop {
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/automaton/dfa.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |             'everysplit: for p in split.iter() {
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/automaton/dfa.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 'everyletter: for letter in self.letters.iter() {
[INFO] [stderr]     |                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils`
[INFO] [stderr]  --> src/optimization/du.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::utils;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree_stack`
[INFO] [stderr]   --> src/ll_table/mod.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_stack`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lr1/mod.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for (i, item_set) in data.item_sets.iter().enumerate() {
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/optimization/dominant.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for i in 0..lines.len() {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `uses`
[INFO] [stderr]   --> src/optimization/ud.rs:56:27
[INFO] [stderr]    |
[INFO] [stderr] 56 |         for (point, left, uses) in block.iter() {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_uses`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/grammar/letter.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let mut temp = match self {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/ll_table/mod.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr_table/mod.rs:172:13
[INFO] [stderr]     |
[INFO] [stderr] 172 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr_table/mod.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lr_table/lalr_table.rs:95:13
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stderr]    |             ----^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr0/lr0_item_set_family.rs:115:17
[INFO] [stderr]     |
[INFO] [stderr] 115 |             let mut shuffle = &mut signs[..];
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr1/lr1_item_set_family.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |             let mut shuffle = &mut signs[..];
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/parse_tree/mod.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |                 state.serialize_field("children", &n.children);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/ll_table/mod.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NonLeafNode`
[INFO] [stderr]  --> src/ll_table/mod.rs:4:36
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::parse_tree::{ParseTree, NonLeafNode};
[INFO] [stderr]   |                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/lr_table/mod.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/lr_table/lalr_table.rs:2:33
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::VecDeque`
[INFO] [stderr]  --> src/lr0/lr0_item_set_family.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::VecDeque;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::thread_rng`
[INFO] [stderr]  --> src/lr0/lr0_item_set_family.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::thread_rng;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `VecDeque`
[INFO] [stderr]  --> src/lr1/lr1_item_set_family.rs:7:33
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::{HashMap, VecDeque};
[INFO] [stderr]   |                                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::thread_rng`
[INFO] [stderr]   --> src/lr1/lr1_item_set_family.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::thread_rng;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::lr1_item_set::LR1ItemSet`
[INFO] [stderr]  --> src/lr1/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use self::lr1_item_set::LR1ItemSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::grammar::letter::Letter`
[INFO] [stderr]  --> src/parse_tree/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::grammar::letter::Letter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ActionTableItem`, `LRTable`
[INFO] [stderr]  --> src/parse_tree/mod.rs:5:23
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::lr_table::{LRTable, ActionTableItem};
[INFO] [stderr]   |                       ^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenStream`
[INFO] [stderr]  --> src/parse_tree/mod.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::token::{TokenStream, Token};
[INFO] [stderr]   |                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils`
[INFO] [stderr]  --> src/automaton/dfa.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::utils;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/automaton/dfa.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         'bigloop: loop {
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/automaton/dfa.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |             'everysplit: for p in split.iter() {
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> src/automaton/dfa.rs:131:17
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 'everyletter: for letter in self.letters.iter() {
[INFO] [stderr]     |                 ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils`
[INFO] [stderr]  --> src/optimization/du.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::utils;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree_stack`
[INFO] [stderr]   --> src/ll_table/mod.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tree_stack`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/lr1/mod.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 |     for (i, item_set) in data.item_sets.iter().enumerate() {
[INFO] [stderr]    |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/optimization/dominant.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     for i in 0..lines.len() {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `uses`
[INFO] [stderr]   --> src/optimization/ud.rs:56:27
[INFO] [stderr]    |
[INFO] [stderr] 56 |         for (point, left, uses) in block.iter() {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_uses`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/grammar/letter.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let mut temp = match self {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/ll_table/mod.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let mut tree_stack: Vec<ParseTree> = Vec::new();
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr_table/mod.rs:172:13
[INFO] [stderr]     |
[INFO] [stderr] 172 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr_table/mod.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lr_table/lalr_table.rs:95:13
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let mut letter_stream: Vec<Letter> = token_stream.stream.iter().map(
[INFO] [stderr]    |             ----^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr0/lr0_item_set_family.rs:115:17
[INFO] [stderr]     |
[INFO] [stderr] 115 |             let mut shuffle = &mut signs[..];
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lr1/lr1_item_set_family.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |             let mut shuffle = &mut signs[..];
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/parse_tree/mod.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |                 state.serialize_field("children", &n.children);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 29 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grammar::first_follow_set::FirstFollowSet`
[INFO] [stderr]  --> src/bin/parser.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use grammar::first_follow_set::FirstFollowSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grammar::lr0::lr0_item_set_family::LR0ItemSetFamily`
[INFO] [stderr]  --> src/bin/parser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use grammar::lr0::lr0_item_set_family::LR0ItemSetFamily;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grammar::lr1::lr1_item_set_family::LR1ItemSetFamily`
[INFO] [stderr]  --> src/bin/parser.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use grammar::lr1::lr1_item_set_family::LR1ItemSetFamily;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `lalr1`, `ll1`
[INFO] [stderr]   --> src/bin/parser.rs:11:26
[INFO] [stderr]    |
[INFO] [stderr] 11 | use grammar::{lr0, slr1, ll1, lr1, lalr1};
[INFO] [stderr]    |                          ^^^       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grammar::parse_tree::ParseTree`
[INFO] [stderr]   --> src/bin/parser.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use grammar::parse_tree::ParseTree;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/parser.rs:173:17
[INFO] [stderr]     |
[INFO] [stderr] 173 |             let mut grammar = Grammar::from_advanced_file(&f).unwrap();
[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 `std::result::Result` that must be used
[INFO] [stderr]    --> src/bin/parser.rs:120:9
[INFO] [stderr]     |
[INFO] [stderr] 120 |         file.write_all(serialized.as_bytes());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/bin/parser.rs:193:9
[INFO] [stderr]     |
[INFO] [stderr] 193 |         outf.write_all(json.as_bytes());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grammar::lr_table::LRTable`
[INFO] [stderr]   --> src/bin/exam.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use grammar::lr_table::LRTable;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `grammar::parse_tree::ParseTree`
[INFO] [stderr]   --> src/bin/exam.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use grammar::parse_tree::ParseTree;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]   --> src/bin/exam.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 | use std::fs::File;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]   --> src/bin/exam.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | use std::fs;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]   --> src/bin/exam.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | use std::io::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parse_tree`
[INFO] [stderr]    --> src/bin/exam.rs:360:14
[INFO] [stderr]     |
[INFO] [stderr] 360 |         let (parse_tree, table) = ll_table.analysis_with_process(&token_stream, g.origin.clone());
[INFO] [stderr]     |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parse_tree`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/exam.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     io::stdin().read_line(&mut input);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/grammar-3a1fb598c7ae34ae
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test grammar::rule::test::test_rule_3 ... ok
[INFO] [stdout] test grammar::rule::test::test_rule_4 ... ok
[INFO] [stdout] test grammar::letter::test::test_letter_2 ... ok
[INFO] [stdout] test grammar::letter::test::test_letter_3 ... ok
[INFO] [stdout] test grammar::rule::test::test_rule_1 ... ok
[INFO] [stdout] test grammar::letter::test::test_letter_1 ... ok
[INFO] [stdout] test grammar::rule::test::test_rule_2 ... ok
[INFO] [stdout] test grammar::test::test_grammar_1 ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- grammar::test::test_grammar_1 stdout ----
[INFO] [stdout] thread 'grammar::test::test_grammar_1' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `rules:
[INFO] [stdout]     S -> Aa|a
[INFO] [stdout]     A -> ab|S
[INFO] [stdout] origin:
[INFO] [stdout]     S
[INFO] [stdout] terminals:
[INFO] [stdout]     A, S, a, b, |, 
[INFO] [stdout] non terminals:
[INFO] [stdout]     S, A, `,
[INFO] [stdout]  right: `rules:
[INFO] [stdout] origin:
[INFO] [stdout]     .
[INFO] [stdout] terminals:
[INFO] [stdout]     
[INFO] [stdout] non terminals:
[INFO] [stdout]     `', src/grammar/mod.rs:267:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x555dd7bafd50 - std::backtrace_rs::backtrace::libunwind::trace::h577ea05e9ca4629a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x555dd7bafd50 - std::backtrace_rs::backtrace::trace_unsynchronized::h50b9b72b84c7dd56
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x555dd7bafd50 - std::sys_common::backtrace::_print_fmt::h6541cf9823837fac
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x555dd7bafd50 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf64fbff071026df5
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x555dd7bd2b0c - core::fmt::write::h9ddafa4860d8adff
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/fmt/mod.rs:1082
[INFO] [stdout]    5:     0x555dd7b49ad5 - std::io::Write::write_fmt::h50a71e2460ce07da
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/mod.rs:1514
[INFO] [stdout]    6:     0x555dd7baaac1 - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::h9bbd3fed8160d0d2
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/io/impls.rs:176
[INFO] [stdout]    7:     0x555dd7bb21d0 - std::sys_common::backtrace::_print::ha25f9ff5080d886d
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    8:     0x555dd7bb21d0 - std::sys_common::backtrace::print::h213e8aa8dc5405c0
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    9:     0x555dd7bb21d0 - std::panicking::default_hook::{{closure}}::h6482fae49ef9d963
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:200
[INFO] [stdout]   10:     0x555dd7bb1ec6 - std::panicking::default_hook::he30ad7589e0970f9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:216
[INFO] [stdout]   11:     0x555dd7bb2833 - std::panicking::rust_panic_with_hook::haa1ed36ada4ffb03
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:569
[INFO] [stdout]   12:     0x555dd7bb2409 - std::panicking::begin_panic_handler::{{closure}}::h7001af1bb21aeaeb
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:476
[INFO] [stdout]   13:     0x555dd7bb01dc - std::sys_common::backtrace::__rust_end_short_backtrace::h39910f557f5f2367
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   14:     0x555dd7bb23c9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:475
[INFO] [stdout]   15:     0x555dd7bb237b - std::panicking::begin_panic_fmt::hc1b1320af38b7e12
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:429
[INFO] [stdout]   16:     0x555dd7b3bc21 - grammar::grammar::test::test_grammar_1::h789ffb1b9323b424
[INFO] [stdout]                                at /opt/rustwide/workdir/src/grammar/mod.rs:267
[INFO] [stdout]   17:     0x555dd7b3b87a - grammar::grammar::test::test_grammar_1::{{closure}}::h603bbec5fe2688f6
[INFO] [stdout]                                at /opt/rustwide/workdir/src/grammar/mod.rs:261
[INFO] [stdout]   18:     0x555dd7b3ce5e - core::ops::function::FnOnce::call_once::h2376964f65c9d4df
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   19:     0x555dd7b723b3 - core::ops::function::FnOnce::call_once::hd04d57b5cf16f85a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   20:     0x555dd7b723b3 - test::__rust_begin_short_backtrace::hd8e9a8c5a2e43388
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:517
[INFO] [stdout]   21:     0x555dd7b70883 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h3c3db8a500c1a19a
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   22:     0x555dd7b70883 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h043e9ebcbe360c80
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:308
[INFO] [stdout]   23:     0x555dd7b70883 - std::panicking::try::do_call::h47c2fb275506c2e8
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   24:     0x555dd7b70883 - std::panicking::try::h569c20f0e99453b4
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   25:     0x555dd7b70883 - std::panic::catch_unwind::hb33c6d0f01540d23
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   26:     0x555dd7b70883 - test::run_test_in_process::hc0ce562d167e51cf
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:544
[INFO] [stdout]   27:     0x555dd7b70883 - test::run_test::run_test_inner::{{closure}}::hd3120982fcd71544
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/test/src/lib.rs:450
[INFO] [stdout]   28:     0x555dd7b48f06 - std::sys_common::backtrace::__rust_begin_short_backtrace::h84f8bc12cc4cdac6
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys_common/backtrace.rs:137
[INFO] [stdout]   29:     0x555dd7b4e135 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hb8b5fa0ba425d4db
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/mod.rs:458
[INFO] [stdout]   30:     0x555dd7b4e135 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc4b84b244cf55f75
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:308
[INFO] [stdout]   31:     0x555dd7b4e135 - std::panicking::try::do_call::ha31922ad8fa17753
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:373
[INFO] [stdout]   32:     0x555dd7b4e135 - std::panicking::try::h38a6da203722ae6e
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panicking.rs:337
[INFO] [stdout]   33:     0x555dd7b4e135 - std::panic::catch_unwind::h83afce167c9062b9
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/panic.rs:379
[INFO] [stdout]   34:     0x555dd7b4e135 - std::thread::Builder::spawn_unchecked::{{closure}}::h160689155590a70c
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/thread/mod.rs:457
[INFO] [stdout]   35:     0x555dd7b4e135 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7dbf17a455132a46
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/core/src/ops/function.rs:227
[INFO] [stdout]   36:     0x555dd7bb8fea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h670c50864ac2cb92
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   37:     0x555dd7bb8fea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h2511952749086d81
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   38:     0x555dd7bb8fea - std::sys::unix::thread::Thread::new::thread_start::h5ad4ddffe24373a8
[INFO] [stdout]                                at /rustc/18bf6b4f01a6feaf7259ba7cdae58031af1b7b39/library/std/src/sys/unix/thread.rs:87
[INFO] [stdout]   39:     0x7fb96e016609 - start_thread
[INFO] [stdout]   40:     0x7fb96df22103 - clone
[INFO] [stdout]   41:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     grammar::test::test_grammar_1
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 7 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "03e45f32031e14eafb80ac38a13e4bd05ab3cdd823ed6ab64c3da97d96bb6350", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03e45f32031e14eafb80ac38a13e4bd05ab3cdd823ed6ab64c3da97d96bb6350", kill_on_drop: false }`
[INFO] [stdout] 03e45f32031e14eafb80ac38a13e4bd05ab3cdd823ed6ab64c3da97d96bb6350
