[INFO] cloning repository https://github.com/0xcrypto102/rex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xcrypto102/rex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrypto102%2Frex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrypto102%2Frex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37d0179d2e69dd0d6f31b3a940411c9b922b61e5
[INFO] checking 0xcrypto102/rex against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrypto102%2Frex" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xcrypto102/rex
[INFO] finished tweaking git repo https://github.com/0xcrypto102/rex
[INFO] tweaked toml for git repo https://github.com/0xcrypto102/rex written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xcrypto102/rex on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xcrypto102/rex 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebb2410df50049966446e479ed2b119b3c7f71a631910f9397fda153a7c14c4a
[INFO] running `Command { std: "docker" "start" "-a" "ebb2410df50049966446e479ed2b119b3c7f71a631910f9397fda153a7c14c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebb2410df50049966446e479ed2b119b3c7f71a631910f9397fda153a7c14c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebb2410df50049966446e479ed2b119b3c7f71a631910f9397fda153a7c14c4a", kill_on_drop: false }`
[INFO] [stdout] ebb2410df50049966446e479ed2b119b3c7f71a631910f9397fda153a7c14c4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e3ac6fcb65fa955990d376e2dde45fd12fe11ef21a6fb0e220f283137b81b7a
[INFO] running `Command { std: "docker" "start" "-a" "7e3ac6fcb65fa955990d376e2dde45fd12fe11ef21a6fb0e220f283137b81b7a", kill_on_drop: false }`
[INFO] [stderr]     Checking rex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Transition`
[INFO] [stdout]  --> src/compiler.rs:5:49
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::pattern::{Condition, Pattern, State, Transition};
[INFO] [stdout]   |                                                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `todo`
[INFO] [stdout]  --> src/pattern.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     todo,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Transition`
[INFO] [stdout]  --> src/compiler.rs:5:49
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::pattern::{Condition, Pattern, State, Transition};
[INFO] [stdout]   |                                                 ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `todo`
[INFO] [stdout]  --> src/pattern.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     todo,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/compiler.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut states = vec![State::Accept];
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/compiler.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn compile(&self, expr: ast::Expression) -> Result<Pattern> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]   --> src/compiler.rs:22:39
[INFO] [stdout]    |
[INFO] [stdout] 22 |             ast::Expression::Sequence(seq) => {}
[INFO] [stdout]    |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Alternation(Vec<Expression>), // (|)
[INFO] [stdout]   |     ----------- ^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Alternation(Vec<Expression>), // (|)
[INFO] [stdout] 3 +     Alternation(()), // (|)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Anchor(Anchor),               // ^ or $
[INFO] [stdout]   |     ------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Anchor(Anchor),               // ^ or $
[INFO] [stdout] 4 +     Anchor(()),               // ^ or $
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Literal(char),                // x
[INFO] [stdout]   |     ------- ^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 -     Literal(char),                // x
[INFO] [stdout] 7 +     Literal(()),                // x
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/ast.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Quantifier(u8, Option<u8>),   // ? * + {}
[INFO] [stdout]   |     ---------- ^^  ^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 8 -     Quantifier(u8, Option<u8>),   // ? * + {}
[INFO] [stdout] 8 +     Quantifier((), ()),   // ? * + {}
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Sequence(Vec<Expression>),
[INFO] [stdout]   |     -------- ^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     Sequence(Vec<Expression>),
[INFO] [stdout] 9 +     Sequence(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Class` is never constructed
[INFO] [stdout]  --> src/ast.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Expression {
[INFO] [stdout]   |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Class(Class),                 // []
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alnum`, `Alpha`, `Digit`, `Lower`, `Space`, and `Upper` are never constructed
[INFO] [stdout]   --> src/ast.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub enum Class {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 20 |     Alnum,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 21 |     Alpha,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     Digit,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 23 |     Lower,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     Space,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 25 |     Upper,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Class` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `compile_states` and `compile_condition` are never used
[INFO] [stdout]   --> src/compiler.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Compiler {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn compile_states(&self, expr: ast::Expression) -> Vec<State> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn compile_condition(&self, expr: ast::Expression) -> Condition {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `compile` is never used
[INFO] [stdout]   --> src/pattern.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Pattern {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 18 |     pub fn compile(expr: ast::Expression) -> Result<Pattern> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Match` is never constructed
[INFO] [stdout]   --> src/pattern.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub enum State {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 45 |     Accept,
[INFO] [stdout] 46 |     Match(Vec<Transition>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Always`, `Start`, `End`, and `Literal` are never constructed
[INFO] [stdout]   --> src/pattern.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub enum Condition {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 55 |     Always,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 56 |     Start,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 57 |     End,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 58 |     Literal(char),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/compiler.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let mut states = vec![State::Accept];
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/compiler.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn compile(&self, expr: ast::Expression) -> Result<Pattern> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seq`
[INFO] [stdout]   --> src/compiler.rs:22:39
[INFO] [stdout]    |
[INFO] [stdout] 22 |             ast::Expression::Sequence(seq) => {}
[INFO] [stdout]    |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_seq`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Alternation(Vec<Expression>), // (|)
[INFO] [stdout]   |     ----------- ^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Alternation(Vec<Expression>), // (|)
[INFO] [stdout] 3 +     Alternation(()), // (|)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Anchor(Anchor),               // ^ or $
[INFO] [stdout]   |     ------ ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Anchor(Anchor),               // ^ or $
[INFO] [stdout] 4 +     Anchor(()),               // ^ or $
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Literal(char),                // x
[INFO] [stdout]   |     ------- ^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 -     Literal(char),                // x
[INFO] [stdout] 7 +     Literal(()),                // x
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]  --> src/ast.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Quantifier(u8, Option<u8>),   // ? * + {}
[INFO] [stdout]   |     ---------- ^^  ^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]   |
[INFO] [stdout] 8 -     Quantifier(u8, Option<u8>),   // ? * + {}
[INFO] [stdout] 8 +     Quantifier((), ()),   // ? * + {}
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/ast.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Sequence(Vec<Expression>),
[INFO] [stdout]   |     -------- ^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     Sequence(Vec<Expression>),
[INFO] [stdout] 9 +     Sequence(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Class` is never constructed
[INFO] [stdout]  --> src/ast.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Expression {
[INFO] [stdout]   |          ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Class(Class),                 // []
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Expression` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Alnum`, `Alpha`, `Digit`, `Lower`, `Space`, and `Upper` are never constructed
[INFO] [stdout]   --> src/ast.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub enum Class {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] 20 |     Alnum,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 21 |     Alpha,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 22 |     Digit,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 23 |     Lower,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 24 |     Space,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 25 |     Upper,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Class` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `compile_states` and `compile_condition` are never used
[INFO] [stdout]   --> src/compiler.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Compiler {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn compile_states(&self, expr: ast::Expression) -> Vec<State> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn compile_condition(&self, expr: ast::Expression) -> Condition {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `compile` is never used
[INFO] [stdout]   --> src/pattern.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Pattern {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 18 |     pub fn compile(expr: ast::Expression) -> Result<Pattern> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Match` is never constructed
[INFO] [stdout]   --> src/pattern.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub enum State {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] 45 |     Accept,
[INFO] [stdout] 46 |     Match(Vec<Transition>),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Always`, `Start`, `End`, and `Literal` are never constructed
[INFO] [stdout]   --> src/pattern.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub enum Condition {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] 55 |     Always,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 56 |     Start,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 57 |     End,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 58 |     Literal(char),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "7e3ac6fcb65fa955990d376e2dde45fd12fe11ef21a6fb0e220f283137b81b7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e3ac6fcb65fa955990d376e2dde45fd12fe11ef21a6fb0e220f283137b81b7a", kill_on_drop: false }`
[INFO] [stdout] 7e3ac6fcb65fa955990d376e2dde45fd12fe11ef21a6fb0e220f283137b81b7a
