[INFO] fetching crate ere-core 0.2.3...
[INFO] testing ere-core-0.2.3 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate ere-core 0.2.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ere-core 0.2.3
[INFO] finished tweaking crates.io crate ere-core 0.2.3
[INFO] tweaked toml for crates.io crate ere-core 0.2.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ere-core 0.2.3 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ere-core 0.2.3 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63ffde6b3c48cbc8a9db5cd701ed13fb1de57f37c19eb5809c54b34825a409c9
[INFO] running `Command { std: "docker" "start" "-a" "63ffde6b3c48cbc8a9db5cd701ed13fb1de57f37c19eb5809c54b34825a409c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63ffde6b3c48cbc8a9db5cd701ed13fb1de57f37c19eb5809c54b34825a409c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ffde6b3c48cbc8a9db5cd701ed13fb1de57f37c19eb5809c54b34825a409c9", kill_on_drop: false }`
[INFO] [stdout] 63ffde6b3c48cbc8a9db5cd701ed13fb1de57f37c19eb5809c54b34825a409c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67cfb4ddff9d9d4b2f62c8c867e7934e050092212a1e8cb79a81d98b865bde96
[INFO] running `Command { std: "docker" "start" "-a" "67cfb4ddff9d9d4b2f62c8c867e7934e050092212a1e8cb79a81d98b865bde96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling ere-core v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]    --> src/nfa_static.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout]  97 | impl NFATransitionStatic {
[INFO] [stdout]     | ------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 102 |     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/nfa_static.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | impl NFAStateStatic {
[INFO] [stdout]     | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     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/nfa_static.rs:241:15
[INFO] [stdout]     |
[INFO] [stdout] 241 | pub(crate) fn serialize_nfa_as_token_stream(nfa: &WorkingNFA) -> proc_macro2::TokenStream {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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:252:19
[INFO] [stdout]     |
[INFO] [stdout] 156 | impl SimplifiedTreeNode {
[INFO] [stdout]     | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 252 |     pub(crate) fn from_ere_no_group0(value: &ERE, config: &Config) -> (SimplifiedTreeNode, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `label` is never read
[INFO] [stdout]   --> src/visualization/latex_graph.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct LatexGraphState {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 27 |     /// The label is a valid latex-encoded string to be inserted at the label.
[INFO] [stdout] 28 |     pub(crate) label: String,
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.73s
[INFO] running `Command { std: "docker" "inspect" "67cfb4ddff9d9d4b2f62c8c867e7934e050092212a1e8cb79a81d98b865bde96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67cfb4ddff9d9d4b2f62c8c867e7934e050092212a1e8cb79a81d98b865bde96", kill_on_drop: false }`
[INFO] [stdout] 67cfb4ddff9d9d4b2f62c8c867e7934e050092212a1e8cb79a81d98b865bde96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4005879026b3f55f40a78b465f79b830e4dd0edde336321f14645cb45fa8f9b6
[INFO] running `Command { std: "docker" "start" "-a" "4005879026b3f55f40a78b465f79b830e4dd0edde336321f14645cb45fa8f9b6", kill_on_drop: false }`
[INFO] [stdout] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]    --> src/nfa_static.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout]  97 | impl NFATransitionStatic {
[INFO] [stdout]     | ------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 102 |     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/nfa_static.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | impl NFAStateStatic {
[INFO] [stdout]     | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     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/nfa_static.rs:241:15
[INFO] [stdout]     |
[INFO] [stdout] 241 | pub(crate) fn serialize_nfa_as_token_stream(nfa: &WorkingNFA) -> proc_macro2::TokenStream {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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:252:19
[INFO] [stdout]     |
[INFO] [stdout] 156 | impl SimplifiedTreeNode {
[INFO] [stdout]     | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 252 |     pub(crate) fn from_ere_no_group0(value: &ERE, config: &Config) -> (SimplifiedTreeNode, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `label` is never read
[INFO] [stdout]   --> src/visualization/latex_graph.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct LatexGraphState {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 27 |     /// The label is a valid latex-encoded string to be inserted at the label.
[INFO] [stdout] 28 |     pub(crate) label: String,
[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] [stderr]    Compiling ere-core v0.2.3 (/opt/rustwide/workdir)
[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] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stdout]    --> src/nfa_static.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout]  97 | impl NFATransitionStatic {
[INFO] [stdout]     | ------------------------ associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 102 |     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/nfa_static.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | impl NFAStateStatic {
[INFO] [stdout]     | ------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     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/nfa_static.rs:241:15
[INFO] [stdout]     |
[INFO] [stdout] 241 | pub(crate) fn serialize_nfa_as_token_stream(nfa: &WorkingNFA) -> proc_macro2::TokenStream {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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:252:19
[INFO] [stdout]     |
[INFO] [stdout] 156 | impl SimplifiedTreeNode {
[INFO] [stdout]     | ----------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 252 |     pub(crate) fn from_ere_no_group0(value: &ERE, config: &Config) -> (SimplifiedTreeNode, usize) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `label` is never read
[INFO] [stdout]   --> src/visualization/latex_graph.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct LatexGraphState {
[INFO] [stdout]    |            --------------- field in this struct
[INFO] [stdout] 27 |     /// The label is a valid latex-encoded string to be inserted at the label.
[INFO] [stdout] 28 |     pub(crate) label: String,
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `Command { std: "docker" "inspect" "4005879026b3f55f40a78b465f79b830e4dd0edde336321f14645cb45fa8f9b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4005879026b3f55f40a78b465f79b830e4dd0edde336321f14645cb45fa8f9b6", kill_on_drop: false }`
[INFO] [stdout] 4005879026b3f55f40a78b465f79b830e4dd0edde336321f14645cb45fa8f9b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ee4cbf4387eb52956a50c6feb3ab58d3ee32a2373ab3bee19aea2284c42c7a6d
[INFO] running `Command { std: "docker" "start" "-a" "ee4cbf4387eb52956a50c6feb3ab58d3ee32a2373ab3bee19aea2284c42c7a6d", kill_on_drop: false }`
[INFO] [stderr] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stderr]    --> src/nfa_static.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr]  97 | impl NFATransitionStatic {
[INFO] [stderr]     | ------------------------ associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 102 |     fn serialize_as_token_stream(transition: &WorkingTransition) -> proc_macro2::TokenStream {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `serialize_as_token_stream` is never used
[INFO] [stderr]    --> src/nfa_static.rs:135:8
[INFO] [stderr]     |
[INFO] [stderr] 125 | impl NFAStateStatic {
[INFO] [stderr]     | ------------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 135 |     fn serialize_as_token_stream(state: &WorkingState) -> proc_macro2::TokenStream {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `serialize_nfa_as_token_stream` is never used
[INFO] [stderr]    --> src/nfa_static.rs:241:15
[INFO] [stderr]     |
[INFO] [stderr] 241 | pub(crate) fn serialize_nfa_as_token_stream(nfa: &WorkingNFA) -> proc_macro2::TokenStream {
[INFO] [stderr]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `min` and `max` are never used
[INFO] [stderr]    --> src/parse_tree.rs:229:14
[INFO] [stderr]     |
[INFO] [stderr] 226 | impl QuantifierType {
[INFO] [stderr]     | ------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 229 |     const fn min(&self) -> u32 {
[INFO] [stderr]     |              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 240 |     const fn max(&self) -> Option<u32> {
[INFO] [stderr]     |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `serialize_check` is never used
[INFO] [stderr]    --> src/parse_tree.rs:480:19
[INFO] [stderr]     |
[INFO] [stderr] 403 | impl Atom {
[INFO] [stderr]     | --------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 480 |     pub(crate) fn serialize_check(&self) -> TokenStream {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `from_ere_no_group0` is never used
[INFO] [stderr]    --> src/simplified_tree.rs:252:19
[INFO] [stderr]     |
[INFO] [stderr] 156 | impl SimplifiedTreeNode {
[INFO] [stderr]     | ----------------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 252 |     pub(crate) fn from_ere_no_group0(value: &ERE, config: &Config) -> (SimplifiedTreeNode, usize) {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `label` is never read
[INFO] [stderr]   --> src/visualization/latex_graph.rs:28:16
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct LatexGraphState {
[INFO] [stderr]    |            --------------- field in this struct
[INFO] [stderr] 27 |     /// The label is a valid latex-encoded string to be inserted at the label.
[INFO] [stderr] 28 |     pub(crate) label: String,
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `with_offset` is never used
[INFO] [stderr]   --> src/working_nfa.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 41 | impl EpsilonTransition {
[INFO] [stderr]    | ---------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 48 |     pub(crate) const fn with_offset(self, offset: usize) -> EpsilonTransition {
[INFO] [stderr]    |                         ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `with_offset` is never used
[INFO] [stderr]   --> src/working_nfa.rs:94:12
[INFO] [stderr]    |
[INFO] [stderr] 90 | impl WorkingTransition {
[INFO] [stderr]    | ---------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 94 |     pub fn with_offset(mut self, offset: usize) -> WorkingTransition {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `with_offset` is never used
[INFO] [stderr]   --> src/working_u8_nfa.rs:69:12
[INFO] [stderr]    |
[INFO] [stderr] 65 | impl U8Transition {
[INFO] [stderr]    | ----------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 69 |     pub fn with_offset(mut self, offset: usize) -> U8Transition {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated functions are never used
[INFO] [stderr]    --> src/working_u8_nfa.rs:155:8
[INFO] [stderr]     |
[INFO] [stderr] 153 | impl U8NFA {
[INFO] [stderr]     | ---------- associated functions in this implementation
[INFO] [stderr] 154 |     /// Makes an NFA that matches with zero length.
[INFO] [stderr] 155 |     fn nfa_empty() -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 160 |     fn nfa_byte(c: &U8Atom) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 165 |     fn nfa_symbol_char(c: char) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 225 |     fn nfa_union(nodes: &[U8NFA]) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 250 |     fn nfa_capture(nfa: &U8NFA, group_num: usize) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 267 |     fn nfa_concat<T: IntoIterator<Item = U8NFA>>(nodes: T) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 289 |     fn nfa_repeat(nfa: &U8NFA, times: usize) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 293 |     fn nfa_upto(nfa: &U8NFA, times: usize, longest: bool) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 335 |     fn nfa_star(nfa: U8NFA, longest: bool) -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 359 |     fn nfa_start() -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 367 |     fn nfa_end() -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 375 |     fn nfa_never() -> U8NFA {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ere-core` (lib) generated 11 warnings
[INFO] [stderr] warning: `ere-core` (lib test) generated 11 warnings (11 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ere_core-fd83571f824736a4)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test parse_tree::tests::atom_to_ranges_normal_char ... ok
[INFO] [stdout] test parse_tree::tests::atom_to_ranges_nonmatching_list ... ok
[INFO] [stdout] test parse_tree::tests::atom_to_ranges_matching_list ... ok
[INFO] [stdout] test parse_tree::tests::parse_atom_brackets ... ok
[INFO] [stdout] test parse_tree::tests::atom_eq ... ok
[INFO] [stdout] test parse_tree::tests::parse_quantifiers ... ok
[INFO] [stdout] test parse_tree::tests::parse_atom_err ... ok
[INFO] [stdout] test parse_tree::tests::reconstruction ... ok
[INFO] [stdout] test parse_tree::tests::parse_atom_simple ... ok
[INFO] [stdout] test working_nfa::tests::double_loop ... ok
[INFO] [stdout] test working_nfa::tests::abbc_raw ... ok
[INFO] [stdout] test working_nfa::tests::range_digit ... ok
[INFO] [stdout] test working_nfa::tests::good_anchored_start ... ok
[INFO] [stdout] test working_nfa::tests::good_anchored_end ... ok
[INFO] [stdout] test working_u8_nfa::tests::range_digit ... ok
[INFO] [stdout] test working_u8_nfa::tests::abbc_raw ... ok
[INFO] [stdout] test working_u8_nfa::tests::phone_number ... ok
[INFO] [stdout] test working_u8_nfa::tests::double_loop ... ok
[INFO] [stdout] test working_u8_nfa::tests::good_anchored_start ... ok
[INFO] [stdout] test working_u8_nfa::tests::good_anchored_end ... ok
[INFO] [stdout] test working_nfa::tests::phone_number ... ok
[INFO] [stderr]    Doc-tests ere_core
[INFO] [stdout] test working_u8_nfa::tests::dot ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.41s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/parse_tree.rs - parse_tree::match_prefix (line 16) ... FAILED
[INFO] [stdout] test src/parse_tree.rs - parse_tree::Atom (line 361) ... ok
[INFO] [stdout] test src/parse_tree.rs - parse_tree::Atom::to_ranges (line 493) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/parse_tree.rs - parse_tree::match_prefix (line 16) stdout ----
[INFO] [stdout] error: cannot find macro `match_prefix` in this scope
[INFO] [stdout]   --> src/parse_tree.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | let test = match_prefix!(text, {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this enum variant takes 1 argument but 2 arguments were supplied
[INFO] [stdout]   --> src/parse_tree.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 | assert_eq!(test, Some("df", 2));
[INFO] [stdout]    |                  ^^^^       - unexpected argument #2 of type `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/c2e32f1c9652b13ed99608599c1e855462f421f3/library/core/src/option.rs:607:4
[INFO] [stdout] help: remove the extra argument
[INFO] [stdout]    |
[INFO] [stdout] 24 - assert_eq!(test, Some("df", 2));
[INFO] [stdout] 24 + assert_eq!(test, Some("df"));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/parse_tree.rs - parse_tree::match_prefix (line 16)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.53s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ee4cbf4387eb52956a50c6feb3ab58d3ee32a2373ab3bee19aea2284c42c7a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee4cbf4387eb52956a50c6feb3ab58d3ee32a2373ab3bee19aea2284c42c7a6d", kill_on_drop: false }`
[INFO] [stdout] ee4cbf4387eb52956a50c6feb3ab58d3ee32a2373ab3bee19aea2284c42c7a6d
