[INFO] fetching crate datafu 0.0.1...
[INFO] checking datafu-0.0.1 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate datafu 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate datafu 0.0.1 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate datafu 0.0.1
[INFO] finished tweaking crates.io crate datafu 0.0.1
[INFO] tweaked toml for crates.io crate datafu 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c00289613c75e8f4fd9661afc1c0d22d443a1a325767f8bfba3f7af54633dac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7c00289613c75e8f4fd9661afc1c0d22d443a1a325767f8bfba3f7af54633dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c00289613c75e8f4fd9661afc1c0d22d443a1a325767f8bfba3f7af54633dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c00289613c75e8f4fd9661afc1c0d22d443a1a325767f8bfba3f7af54633dac", kill_on_drop: false }`
[INFO] [stdout] 7c00289613c75e8f4fd9661afc1c0d22d443a1a325767f8bfba3f7af54633dac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a56889cb7b138594c37799b3ecbad8b845d8918d7e1851ef5d7b7ec8df25b70
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3a56889cb7b138594c37799b3ecbad8b845d8918d7e1851ef5d7b7ec8df25b70", kill_on_drop: false }`
[INFO] [stderr]     Checking datafu v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable if-let pattern
[INFO] [stdout]    --> src/vm.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | /         if let Self { value: ref mut v, iterator: ref mut it, .. } = self {
[INFO] [stdout] 147 | |             let is_subtree = v.is_subtree();
[INFO] [stdout] 148 | |             *v = match it.next() {
[INFO] [stdout] 149 | |                 Some(pair) => HolderState::Key(pair),
[INFO] [stdout] ...   |
[INFO] [stdout] 154 | |             assert!(!v.is_empty() && v.is_subtree() == is_subtree);
[INFO] [stdout] 155 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/lib.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         item: &'b Self::Value
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         item: &'b Self::Value,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         key: Key<'a, Self::Value, Self::OwnKey>
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/parser.rs:8:38
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub(crate) fn parse<T: PatternTypes>(s: &str) -> Result<PatternConstants<T>, PatternError> {
[INFO] [stdout]   |                                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable if-let pattern
[INFO] [stdout]    --> src/vm.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 | /         if let Self { value: ref mut v, iterator: ref mut it, .. } = self {
[INFO] [stdout] 147 | |             let is_subtree = v.is_subtree();
[INFO] [stdout] 148 | |             *v = match it.next() {
[INFO] [stdout] 149 | |                 Some(pair) => HolderState::Key(pair),
[INFO] [stdout] ...   |
[INFO] [stdout] 154 | |             assert!(!v.is_empty() && v.is_subtree() == is_subtree);
[INFO] [stdout] 155 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/lib.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         item: &'b Self::Value
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         item: &'b Self::Value,
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key`
[INFO] [stdout]   --> src/lib.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         key: Key<'a, Self::Value, Self::OwnKey>
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/parser.rs:8:38
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub(crate) fn parse<T: PatternTypes>(s: &str) -> Result<PatternConstants<T>, PatternError> {
[INFO] [stdout]   |                                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `strings`
[INFO] [stdout]   --> src/vm.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub(crate) strings: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `regices`
[INFO] [stdout]   --> src/vm.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) regices: Vec<()/* TODO */>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `predicates`
[INFO] [stdout]   --> src/vm.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) predicates: Vec<Box<Predicate<T>>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `defs`
[INFO] [stdout]   --> src/vm.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub(crate) defs: Vec<T::Value>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Arrow`
[INFO] [stdout]   --> src/vm.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Arrow,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Identifier`
[INFO] [stdout]   --> src/vm.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Identifier(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `StringKey`
[INFO] [stdout]   --> src/vm.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     StringKey(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexKey`
[INFO] [stdout]   --> src/vm.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     RegexKey(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ParameterKey`
[INFO] [stdout]   --> src/vm.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     ParameterKey(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `KeySubtree`
[INFO] [stdout]   --> src/vm.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     KeySubtree(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ValueSubtree`
[INFO] [stdout]   --> src/vm.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     ValueSubtree(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ApplyPredicate`
[INFO] [stdout]   --> src/vm.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     ApplyPredicate(usize, bool, PhantomData<fn(&PatternConstants<T>) -> &Predicate<T>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `End`
[INFO] [stdout]   --> src/vm.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     End
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `obj`
[INFO] [stdout]   --> src/vm.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     obj: &'b T::Value,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `depth`
[INFO] [stdout]   --> src/vm.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     depth: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Key`
[INFO] [stdout]   --> src/vm.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Key(KVPair<'b, T>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtree`
[INFO] [stdout]    --> src/vm.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     Subtree(Matches<'a, 'b, T>, &'b T::Value),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_subtree`
[INFO] [stdout]    --> src/vm.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn is_subtree(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/vm.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn value(&self) -> Option<&'b T::Value> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]    --> src/vm.rs:139:6
[INFO] [stdout]     |
[INFO] [stdout] 139 |      parent: Option<&'b T::Value>,
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `iterator`
[INFO] [stdout]    --> src/vm.rs:140:6
[INFO] [stdout]     |
[INFO] [stdout] 140 |      iterator: Box<dyn Iterator<Item=KVPair<'b, T>> + 'b>,
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `filters`
[INFO] [stdout]    --> src/vm.rs:141:6
[INFO] [stdout]     |
[INFO] [stdout] 141 |      filters: Vec<Box<dyn for<'c> Fn(&'c mut HolderState<'a, 'b, T>) + 'a>>,
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/vm.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn next(&mut self) -> Option<Result<(), MatchError>> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `defs`
[INFO] [stdout]    --> src/vm.rs:174:5
[INFO] [stdout]     |
[INFO] [stdout] 174 |     defs: &'a PatternConstants<T>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `strings`
[INFO] [stdout]   --> src/vm.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub(crate) strings: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `regices`
[INFO] [stdout]   --> src/vm.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) regices: Vec<()/* TODO */>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `predicates`
[INFO] [stdout]   --> src/vm.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) predicates: Vec<Box<Predicate<T>>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `defs`
[INFO] [stdout]   --> src/vm.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub(crate) defs: Vec<T::Value>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Arrow`
[INFO] [stdout]   --> src/vm.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     Arrow,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Identifier`
[INFO] [stdout]   --> src/vm.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     Identifier(usize),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `StringKey`
[INFO] [stdout]   --> src/vm.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     StringKey(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexKey`
[INFO] [stdout]   --> src/vm.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     RegexKey(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ParameterKey`
[INFO] [stdout]   --> src/vm.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     ParameterKey(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `KeySubtree`
[INFO] [stdout]   --> src/vm.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     KeySubtree(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ValueSubtree`
[INFO] [stdout]   --> src/vm.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     ValueSubtree(usize, bool),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ApplyPredicate`
[INFO] [stdout]   --> src/vm.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     ApplyPredicate(usize, bool, PhantomData<fn(&PatternConstants<T>) -> &Predicate<T>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `End`
[INFO] [stdout]   --> src/vm.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     End
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `obj`
[INFO] [stdout]   --> src/vm.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     obj: &'b T::Value,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `depth`
[INFO] [stdout]   --> src/vm.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     depth: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Key`
[INFO] [stdout]   --> src/vm.rs:99:5
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Key(KVPair<'b, T>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Subtree`
[INFO] [stdout]    --> src/vm.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     Subtree(Matches<'a, 'b, T>, &'b T::Value),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_subtree`
[INFO] [stdout]    --> src/vm.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn is_subtree(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/vm.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn value(&self) -> Option<&'b T::Value> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]    --> src/vm.rs:139:6
[INFO] [stdout]     |
[INFO] [stdout] 139 |      parent: Option<&'b T::Value>,
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `iterator`
[INFO] [stdout]    --> src/vm.rs:140:6
[INFO] [stdout]     |
[INFO] [stdout] 140 |      iterator: Box<dyn Iterator<Item=KVPair<'b, T>> + 'b>,
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `filters`
[INFO] [stdout]    --> src/vm.rs:141:6
[INFO] [stdout]     |
[INFO] [stdout] 141 |      filters: Vec<Box<dyn for<'c> Fn(&'c mut HolderState<'a, 'b, T>) + 'a>>,
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/vm.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn next(&mut self) -> Option<Result<(), MatchError>> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `defs`
[INFO] [stdout]    --> src/vm.rs:174:5
[INFO] [stdout]     |
[INFO] [stdout] 174 |     defs: &'a PatternConstants<T>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "3a56889cb7b138594c37799b3ecbad8b845d8918d7e1851ef5d7b7ec8df25b70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a56889cb7b138594c37799b3ecbad8b845d8918d7e1851ef5d7b7ec8df25b70", kill_on_drop: false }`
[INFO] [stdout] 3a56889cb7b138594c37799b3ecbad8b845d8918d7e1851ef5d7b7ec8df25b70