[INFO] fetching crate ere-core 0.2.4...
[INFO] checking ere-core-0.2.4 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate ere-core 0.2.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ere-core 0.2.4
[INFO] finished tweaking crates.io crate ere-core 0.2.4
[INFO] tweaked toml for crates.io crate ere-core 0.2.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ere-core 0.2.4 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ere-core 0.2.4 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef
[INFO] running `Command { std: "docker" "start" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]     Checking quote v1.0.38
[INFO] [stderr]     Checking syn v2.0.96
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]     Checking ere-core v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated module `std::usize`: all constants in this module replaced by associated constants on the type
[INFO] [stdout]   --> src/working_u8_nfa.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::{usize, vec};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:196:60
[INFO] [stdout]     |
[INFO] [stdout] 196 | ...                   .push(U8Transition::new(usize::MAX, U8Atom(byte_range)));
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:215:44
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 if transition.to == usize::MAX {
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:451:40
[INFO] [stdout]     |
[INFO] [stdout] 451 |                     return Some(usize::MAX);
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:463:54
[INFO] [stdout]     |
[INFO] [stdout] 463 |             .filter(|(i, _)| state_map[*i] != usize::MAX)
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `std::usize`: all constants in this module replaced by associated constants on the type
[INFO] [stdout]   --> src/working_u8_nfa.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::{usize, vec};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:196:60
[INFO] [stdout]     |
[INFO] [stdout] 196 | ...                   .push(U8Transition::new(usize::MAX, U8Atom(byte_range)));
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:215:44
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 if transition.to == usize::MAX {
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:451:40
[INFO] [stdout]     |
[INFO] [stdout] 451 |                     return Some(usize::MAX);
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::usize::MAX`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/working_u8_nfa.rs:463:54
[INFO] [stdout]     |
[INFO] [stdout] 463 |             .filter(|(i, _)| state_map[*i] != usize::MAX)
[INFO] [stdout]     |                                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `accept_state`
[INFO] [stdout]    --> src/engines/flat_lockstep_nfa.rs:296:17
[INFO] [stdout]     |
[INFO] [stdout] 296 |             let accept_state = ImplVMStateLabel(state_count - 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_accept_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `accept_state`
[INFO] [stdout]    --> src/engines/flat_lockstep_nfa_u8.rs:308:17
[INFO] [stdout]     |
[INFO] [stdout] 308 |             let accept_state = ImplVMStateLabel(state_count - 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_accept_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `accept_state`
[INFO] [stdout]    --> src/engines/flat_lockstep_nfa.rs:296:17
[INFO] [stdout]     |
[INFO] [stdout] 296 |             let accept_state = ImplVMStateLabel(state_count - 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_accept_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `accept_state`
[INFO] [stdout]    --> src/engines/flat_lockstep_nfa_u8.rs:308:17
[INFO] [stdout]     |
[INFO] [stdout] 308 |             let accept_state = ImplVMStateLabel(state_count - 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_accept_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]   --> src/engines/nfa_static.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | impl NFATransitionStatic {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 94 |     fn serialize_as_token_stream(transition: &WorkingTransition) -> proc_macro2::TokenStream {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]    --> src/engines/nfa_static.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl NFAStateStatic {
[INFO] [stdout]     | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     fn serialize_as_token_stream(state: &WorkingState) -> proc_macro2::TokenStream {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serialize_nfa_as_token_stream` is never used
[INFO] [stdout]    --> src/engines/nfa_static.rs:228:15
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub(crate) fn serialize_nfa_as_token_stream(nfa: &WorkingNFA) -> proc_macro2::TokenStream {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start_state` is never read
[INFO] [stdout]    --> src/engines/one_pass_u8.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 156 | struct Run {
[INFO] [stdout]     |        --- field in this struct
[INFO] [stdout] 157 |     start_state: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Run` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `min` and `max` are never used
[INFO] [stdout]    --> src/parse_tree.rs:229:14
[INFO] [stdout]     |
[INFO] [stdout] 226 | impl QuantifierType {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 229 |     const fn min(&self) -> u32 {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     const fn max(&self) -> Option<u32> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `serialize_check` is never used
[INFO] [stdout]    --> src/parse_tree.rs:480:19
[INFO] [stdout]     |
[INFO] [stdout] 403 | impl Atom {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 480 |     pub(crate) fn serialize_check(&self) -> TokenStream {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_ere_no_group0` is never used
[INFO] [stdout]    --> src/simplified_tree.rs:260:19
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl SimplifiedTreeNode {
[INFO] [stdout]     | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 260 |     pub(crate) fn from_ere_no_group0(value: &ERE, config: &Config) -> (SimplifiedTreeNode, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `graph` is never read
[INFO] [stdout]   --> src/visualization/layout.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct DAGLayout<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     graph: &'a LatexGraph,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LayerNode` is never used
[INFO] [stdout]   --> src/visualization/layout.rs:94:14
[INFO] [stdout]    |
[INFO] [stdout] 94 |         enum LayerNode {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_offset` is never used
[INFO] [stdout]   --> src/working_nfa.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl EpsilonTransition {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub(crate) const fn with_offset(self, offset: usize) -> EpsilonTransition {
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_offset` is never used
[INFO] [stdout]   --> src/working_nfa.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl WorkingTransition {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 94 |     pub fn with_offset(mut self, offset: usize) -> WorkingTransition {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_offset` is never used
[INFO] [stdout]   --> src/working_u8_nfa.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl U8Transition {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn with_offset(mut self, offset: usize) -> U8Transition {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated functions are never used
[INFO] [stdout]    --> src/working_u8_nfa.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | impl U8NFA {
[INFO] [stdout]     | ---------- associated functions in this implementation
[INFO] [stdout] 154 |     /// Makes an NFA that matches with zero length.
[INFO] [stdout] 155 |     fn nfa_empty() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 160 |     fn nfa_byte(c: &U8Atom) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     fn nfa_symbol_char(c: char) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn nfa_union(nodes: &[U8NFA]) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 250 |     fn nfa_capture(nfa: &U8NFA, group_num: usize) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 267 |     fn nfa_concat<T: IntoIterator<Item = U8NFA>>(nodes: T) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 289 |     fn nfa_repeat(nfa: &U8NFA, times: usize) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 |     fn nfa_upto(nfa: &U8NFA, times: usize, longest: bool) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 335 |     fn nfa_star(nfa: U8NFA, longest: bool) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 359 |     fn nfa_start() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 367 |     fn nfa_end() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 375 |     fn nfa_never() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/engines/nfa_static.rs:97:16
[INFO] [stdout]     |
[INFO] [stdout]  97 |           return quote! {
[INFO] [stdout]     |  ________________^
[INFO] [stdout]  98 | |             ::ere::nfa_static::NFATransitionStatic::__load(
[INFO] [stdout]  99 | |                 #to,
[INFO] [stdout] 100 | |                 #symbol,
[INFO] [stdout] ...   |
[INFO] [stdout] 103 | |         .into();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/engines/nfa_static.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |           return quote! {{
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 136 | |             const transitions: &'static [::ere::nfa_static::NFATransitionStatic] = &[#(#transitions),*];
[INFO] [stdout] 137 | |             const epsilons: &'static [::ere::working_nfa::EpsilonTransition] = &[#(#epsilons),*];
[INFO] [stdout] 138 | |             ::ere::nfa_static::NFAStateStatic::__load(
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |         }}
[INFO] [stdout] 143 | |         .into();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/engines/one_pass_u8.rs:612:12
[INFO] [stdout]     |
[INFO] [stdout] 612 |       return quote! {{
[INFO] [stdout]     |  ____________^
[INFO] [stdout] 613 | |         #test
[INFO] [stdout] 614 | |         #exec
[INFO] [stdout] ...   |
[INFO] [stdout] 617 | |     }}
[INFO] [stdout] 618 | |     .into();
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]     --> src/engines/one_pass_u8.rs:1123:12
[INFO] [stdout]      |
[INFO] [stdout] 1123 |       return quote! {{
[INFO] [stdout]      |  ____________^
[INFO] [stdout] 1124 | |         #impl_test_fn
[INFO] [stdout] 1125 | |         #impl_exec_fn
[INFO] [stdout] ...    |
[INFO] [stdout] 1128 | |     }}
[INFO] [stdout] 1129 | |     .into();
[INFO] [stdout]      | |___________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nfa`
[INFO] [stdout]    --> src/working_u8_dfa.rs:614:13
[INFO] [stdout]     |
[INFO] [stdout] 614 |         let nfa = U8DFA::from_nfa(&nfa, 100).unwrap();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_nfa`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ere-core` (lib) due to 4 previous errors; 20 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]   --> src/engines/nfa_static.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | impl NFATransitionStatic {
[INFO] [stdout]    | ------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 94 |     fn serialize_as_token_stream(transition: &WorkingTransition) -> proc_macro2::TokenStream {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]    --> src/engines/nfa_static.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 117 | impl NFAStateStatic {
[INFO] [stdout]     | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 127 |     fn serialize_as_token_stream(state: &WorkingState) -> proc_macro2::TokenStream {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `serialize_nfa_as_token_stream` is never used
[INFO] [stdout]    --> src/engines/nfa_static.rs:228:15
[INFO] [stdout]     |
[INFO] [stdout] 228 | pub(crate) fn serialize_nfa_as_token_stream(nfa: &WorkingNFA) -> proc_macro2::TokenStream {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start_state` is never read
[INFO] [stdout]    --> src/engines/one_pass_u8.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 156 | struct Run {
[INFO] [stdout]     |        --- field in this struct
[INFO] [stdout] 157 |     start_state: usize,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Run` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `min` and `max` are never used
[INFO] [stdout]    --> src/parse_tree.rs:229:14
[INFO] [stdout]     |
[INFO] [stdout] 226 | impl QuantifierType {
[INFO] [stdout]     | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 229 |     const fn min(&self) -> u32 {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     const fn max(&self) -> Option<u32> {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `serialize_check` is never used
[INFO] [stdout]    --> src/parse_tree.rs:480:19
[INFO] [stdout]     |
[INFO] [stdout] 403 | impl Atom {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 480 |     pub(crate) fn serialize_check(&self) -> TokenStream {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_ere_no_group0` is never used
[INFO] [stdout]    --> src/simplified_tree.rs:260:19
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl SimplifiedTreeNode {
[INFO] [stdout]     | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 260 |     pub(crate) fn from_ere_no_group0(value: &ERE, config: &Config) -> (SimplifiedTreeNode, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `graph` is never read
[INFO] [stdout]   --> src/visualization/layout.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct DAGLayout<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     graph: &'a LatexGraph,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LayerNode` is never used
[INFO] [stdout]   --> src/visualization/layout.rs:94:14
[INFO] [stdout]    |
[INFO] [stdout] 94 |         enum LayerNode {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_offset` is never used
[INFO] [stdout]   --> src/working_nfa.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl EpsilonTransition {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub(crate) const fn with_offset(self, offset: usize) -> EpsilonTransition {
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_offset` is never used
[INFO] [stdout]   --> src/working_nfa.rs:94:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | impl WorkingTransition {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 94 |     pub fn with_offset(mut self, offset: usize) -> WorkingTransition {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `with_offset` is never used
[INFO] [stdout]   --> src/working_u8_nfa.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 65 | impl U8Transition {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 69 |     pub fn with_offset(mut self, offset: usize) -> U8Transition {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated functions are never used
[INFO] [stdout]    --> src/working_u8_nfa.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 153 | impl U8NFA {
[INFO] [stdout]     | ---------- associated functions in this implementation
[INFO] [stdout] 154 |     /// Makes an NFA that matches with zero length.
[INFO] [stdout] 155 |     fn nfa_empty() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 160 |     fn nfa_byte(c: &U8Atom) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     fn nfa_symbol_char(c: char) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn nfa_union(nodes: &[U8NFA]) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 250 |     fn nfa_capture(nfa: &U8NFA, group_num: usize) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 267 |     fn nfa_concat<T: IntoIterator<Item = U8NFA>>(nodes: T) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 289 |     fn nfa_repeat(nfa: &U8NFA, times: usize) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 |     fn nfa_upto(nfa: &U8NFA, times: usize, longest: bool) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 335 |     fn nfa_star(nfa: U8NFA, longest: bool) -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 359 |     fn nfa_start() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 367 |     fn nfa_end() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 375 |     fn nfa_never() -> U8NFA {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/engines/nfa_static.rs:97:16
[INFO] [stdout]     |
[INFO] [stdout]  97 |           return quote! {
[INFO] [stdout]     |  ________________^
[INFO] [stdout]  98 | |             ::ere::nfa_static::NFATransitionStatic::__load(
[INFO] [stdout]  99 | |                 #to,
[INFO] [stdout] 100 | |                 #symbol,
[INFO] [stdout] ...   |
[INFO] [stdout] 103 | |         .into();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/engines/nfa_static.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |           return quote! {{
[INFO] [stdout]     |  ________________^
[INFO] [stdout] 136 | |             const transitions: &'static [::ere::nfa_static::NFATransitionStatic] = &[#(#transitions),*];
[INFO] [stdout] 137 | |             const epsilons: &'static [::ere::working_nfa::EpsilonTransition] = &[#(#epsilons),*];
[INFO] [stdout] 138 | |             ::ere::nfa_static::NFAStateStatic::__load(
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |         }}
[INFO] [stdout] 143 | |         .into();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/engines/one_pass_u8.rs:612:12
[INFO] [stdout]     |
[INFO] [stdout] 612 |       return quote! {{
[INFO] [stdout]     |  ____________^
[INFO] [stdout] 613 | |         #test
[INFO] [stdout] 614 | |         #exec
[INFO] [stdout] ...   |
[INFO] [stdout] 617 | |     }}
[INFO] [stdout] 618 | |     .into();
[INFO] [stdout]     | |___________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]     --> src/engines/one_pass_u8.rs:1123:12
[INFO] [stdout]      |
[INFO] [stdout] 1123 |       return quote! {{
[INFO] [stdout]      |  ____________^
[INFO] [stdout] 1124 | |         #impl_test_fn
[INFO] [stdout] 1125 | |         #impl_exec_fn
[INFO] [stdout] ...    |
[INFO] [stdout] 1128 | |     }}
[INFO] [stdout] 1129 | |     .into();
[INFO] [stdout]      | |___________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ere-core` (lib test) due to 4 previous errors; 21 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef", kill_on_drop: false }`
[INFO] [stdout] e396ea616fe94442bcbe12ba74d0899627f0da7eda54e8fea78ff3c39ba1d0ef
