[INFO] cloning repository https://github.com/BeenAxis/rust-tokenizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BeenAxis/rust-tokenizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeenAxis%2Frust-tokenizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeenAxis%2Frust-tokenizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c9a88b537135015ca1096b7470002961eee05d0
[INFO] checking BeenAxis/rust-tokenizer against try#44f3504e96c944ae54fc72b5f5008f53f7eda001 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeenAxis%2Frust-tokenizer" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BeenAxis/rust-tokenizer on toolchain 44f3504e96c944ae54fc72b5f5008f53f7eda001
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BeenAxis/rust-tokenizer
[INFO] finished tweaking git repo https://github.com/BeenAxis/rust-tokenizer
[INFO] tweaked toml for git repo https://github.com/BeenAxis/rust-tokenizer written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BeenAxis/rust-tokenizer 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" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87c6abf2fac4ceee4a0e0f67fff6bb6303fcc03b11a071a8f9a2ff994c77ad12
[INFO] running `Command { std: "docker" "start" "-a" "87c6abf2fac4ceee4a0e0f67fff6bb6303fcc03b11a071a8f9a2ff994c77ad12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87c6abf2fac4ceee4a0e0f67fff6bb6303fcc03b11a071a8f9a2ff994c77ad12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87c6abf2fac4ceee4a0e0f67fff6bb6303fcc03b11a071a8f9a2ff994c77ad12", kill_on_drop: false }`
[INFO] [stdout] 87c6abf2fac4ceee4a0e0f67fff6bb6303fcc03b11a071a8f9a2ff994c77ad12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+44f3504e96c944ae54fc72b5f5008f53f7eda001" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee75013f58ee4bff028e28a5a4ac72c33e4566b89f9132b4a55fd36cc35bde9d
[INFO] running `Command { std: "docker" "start" "-a" "ee75013f58ee4bff028e28a5a4ac72c33e4566b89f9132b4a55fd36cc35bde9d", kill_on_drop: false }`
[INFO] [stderr]     Checking stacktoken v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:53:36
[INFO] [stdout]    |
[INFO] [stdout] 53 |     tkb.replace(range.as_slice(), |mut list| {
[INFO] [stdout]    |                                    ----^^^^
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `prev` is never read
[INFO] [stdout]   --> src/utils/linkedlist.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     prev: Link<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/utils/linkedlist.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<T> Node<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(t: T) -> Node<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tail`, `im_map`, and `len` are never read
[INFO] [stdout]   --> src/utils/linkedlist.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct LinkedHashList<T> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 38 |     start: Link<T>,
[INFO] [stdout] 39 |     tail: Link<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 40 |     im_map: ImaginaryHashMap<T>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 41 |     len: usize
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `indexes` and `index_void` are never read
[INFO] [stdout]   --> src/utils/linkedlist.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ImaginaryHashMap<T> {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 45 |     indexes: HashMap<usize, Link<T>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 46 |     index_void: IndexVoid,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `clear`, `len`, `add_void`, and `get` are never used
[INFO] [stdout]   --> src/utils/linkedlist.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl<T> ImaginaryHashMap<T> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 50 |     pub fn new() -> ImaginaryHashMap<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn insert(&mut self, key: usize, value: Link<T>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn add_void(&mut self, gap: Void) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn get(&self, im_idx: &usize) -> Option<&Link<T>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `len`, `reindex`, `replace`, and `push` are never used
[INFO] [stdout]    --> src/utils/linkedlist.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 112 | impl<T> LinkedHashList<T> {
[INFO] [stdout]     | ------------------------- associated items in this implementation
[INFO] [stdout] 113 |     pub fn new() -> LinkedHashList<T> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn reindex(&mut self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn replace(&mut self, range: Range<usize>, element: T) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn push(&mut self, element: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `from` and `to` are never read
[INFO] [stdout]  --> src/utils/voids.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Void {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     from: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     to: usize
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Void` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/utils/voids.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Void {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn from(range: Range<usize>) -> Void {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `gaps` is never read
[INFO] [stdout]   --> src/utils/voids.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct IndexVoid {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 19 |     gaps: Vec<Void>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `del_gap`, `clear`, `real_index`, and `insert` are never used
[INFO] [stdout]   --> src/utils/voids.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl IndexVoid {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 23 |     pub fn new() -> IndexVoid {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn del_gap(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn real_index(&self, im_idx: usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn insert(&mut self, gap: Void) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_custom`, `from_string`, and `debug` are never used
[INFO] [stdout]    --> src/stacktoken/mod.rs:97:12
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl<HOLDER: TokenHolder> TokenBuilder<HOLDER> {
[INFO] [stdout]     | ---------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 97  |     pub fn push_custom(&mut self, tok: HOLDER) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn from_string(&mut self, str: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub fn debug(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `StartParen` and `EndParen` are never constructed
[INFO] [stdout]    --> src/stacktoken/mod.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub enum TestCustomTokens {
[INFO] [stdout]     |          ---------------- variants in this enum
[INFO] [stdout] 203 |     StartParen,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 204 |     EndParen,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TestCustomTokens` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Empty`, `String`, and `IntLit` are never constructed
[INFO] [stdout]    --> src/stacktoken/mod.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub enum Token<T: TokenHolder> {
[INFO] [stdout]     |          ----- variants in this enum
[INFO] [stdout] 264 |     Empty,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 267 |     String(String),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 268 |     IntLit(i32),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:53:36
[INFO] [stdout]    |
[INFO] [stdout] 53 |     tkb.replace(range.as_slice(), |mut list| {
[INFO] [stdout]    |                                    ----^^^^
[INFO] [stdout]    |                                    |
[INFO] [stdout]    |                                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `prev` is never read
[INFO] [stdout]   --> src/utils/linkedlist.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Node<T> {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     prev: Link<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/utils/linkedlist.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl<T> Node<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(t: T) -> Node<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tail`, `im_map`, and `len` are never read
[INFO] [stdout]   --> src/utils/linkedlist.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct LinkedHashList<T> {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 38 |     start: Link<T>,
[INFO] [stdout] 39 |     tail: Link<T>,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 40 |     im_map: ImaginaryHashMap<T>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 41 |     len: usize
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `indexes` and `index_void` are never read
[INFO] [stdout]   --> src/utils/linkedlist.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ImaginaryHashMap<T> {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 45 |     indexes: HashMap<usize, Link<T>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 46 |     index_void: IndexVoid,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `clear`, `len`, `add_void`, and `get` are never used
[INFO] [stdout]   --> src/utils/linkedlist.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | impl<T> ImaginaryHashMap<T> {
[INFO] [stdout]    | --------------------------- associated items in this implementation
[INFO] [stdout] 50 |     pub fn new() -> ImaginaryHashMap<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn insert(&mut self, key: usize, value: Link<T>) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn add_void(&mut self, gap: Void) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     pub fn get(&self, im_idx: &usize) -> Option<&Link<T>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `len`, `reindex`, `replace`, and `push` are never used
[INFO] [stdout]    --> src/utils/linkedlist.rs:113:12
[INFO] [stdout]     |
[INFO] [stdout] 112 | impl<T> LinkedHashList<T> {
[INFO] [stdout]     | ------------------------- associated items in this implementation
[INFO] [stdout] 113 |     pub fn new() -> LinkedHashList<T> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn reindex(&mut self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 144 |     pub fn replace(&mut self, range: Range<usize>, element: T) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn push(&mut self, element: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `from` and `to` are never read
[INFO] [stdout]  --> src/utils/voids.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Void {
[INFO] [stdout]   |            ---- fields in this struct
[INFO] [stdout] 5 |     from: usize,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     to: usize
[INFO] [stdout]   |     ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Void` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/utils/voids.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Void {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn from(range: Range<usize>) -> Void {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `gaps` is never read
[INFO] [stdout]   --> src/utils/voids.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct IndexVoid {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 19 |     gaps: Vec<Void>
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `del_gap`, `clear`, `real_index`, and `insert` are never used
[INFO] [stdout]   --> src/utils/voids.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl IndexVoid {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 23 |     pub fn new() -> IndexVoid {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn del_gap(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn clear(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn real_index(&self, im_idx: usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn insert(&mut self, gap: Void) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_custom`, `from_string`, and `debug` are never used
[INFO] [stdout]    --> src/stacktoken/mod.rs:97:12
[INFO] [stdout]     |
[INFO] [stdout] 90  | impl<HOLDER: TokenHolder> TokenBuilder<HOLDER> {
[INFO] [stdout]     | ---------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 97  |     pub fn push_custom(&mut self, tok: HOLDER) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn from_string(&mut self, str: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub fn debug(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `StartParen` and `EndParen` are never constructed
[INFO] [stdout]    --> src/stacktoken/mod.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub enum TestCustomTokens {
[INFO] [stdout]     |          ---------------- variants in this enum
[INFO] [stdout] 203 |     StartParen,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 204 |     EndParen,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TestCustomTokens` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Empty`, `String`, and `IntLit` are never constructed
[INFO] [stdout]    --> src/stacktoken/mod.rs:264:5
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub enum Token<T: TokenHolder> {
[INFO] [stdout]     |          ----- variants in this enum
[INFO] [stdout] 264 |     Empty,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 267 |     String(String),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 268 |     IntLit(i32),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "ee75013f58ee4bff028e28a5a4ac72c33e4566b89f9132b4a55fd36cc35bde9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee75013f58ee4bff028e28a5a4ac72c33e4566b89f9132b4a55fd36cc35bde9d", kill_on_drop: false }`
[INFO] [stdout] ee75013f58ee4bff028e28a5a4ac72c33e4566b89f9132b4a55fd36cc35bde9d
