[INFO] fetching crate ai_kit 0.1.0...
[INFO] checking ai_kit-0.1.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate ai_kit 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ai_kit 0.1.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ai_kit 0.1.0
[INFO] finished tweaking crates.io crate ai_kit 0.1.0
[INFO] tweaked toml for crates.io crate ai_kit 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fdf619759a32a35f833f32de0ab69a78fc9cbe4725afec02cf47ab70afd7ddd
[INFO] running `Command { std: "docker" "start" "-a" "5fdf619759a32a35f833f32de0ab69a78fc9cbe4725afec02cf47ab70afd7ddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fdf619759a32a35f833f32de0ab69a78fc9cbe4725afec02cf47ab70afd7ddd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fdf619759a32a35f833f32de0ab69a78fc9cbe4725afec02cf47ab70afd7ddd", kill_on_drop: false }`
[INFO] [stdout] 5fdf619759a32a35f833f32de0ab69a78fc9cbe4725afec02cf47ab70afd7ddd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87dccf15530cccc1d2abc84fcadcd0cc65f9d57356931bc10e1d59e87022b1e8
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling pulldown-cmark v0.0.15
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[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking serde v0.9.15
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[INFO] [stderr]     Checking itertools v0.5.10
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[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]     Checking skeptic v0.11.0
[INFO] [stderr]    Compiling ai_kit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/constraints/numerical.rs:126:33
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...   |x: &T, y: &T, op: &Fn(f64, f64) -> f64| -> Option<T> { x.to_float().and_then(|x| y.to_float().and_then(|y| Some(T::float(op(x, y))...
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/constraints/mod.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn float(f64) -> Self;
[INFO] [stdout]    |              ^^^ help: try naming the parameter or explicitly ignoring it: `_: f64`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/constraints/mod.rs:85:32
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn and_then(&self, f: &Fn(&Bindings<T>) -> Self) -> Self {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Bindings<T>) -> Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/constraints/mod.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn if_partial(&self, f: &Fn(&Bindings<T>) -> Self) -> Self {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Bindings<T>) -> Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core/mod.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |         try!(write!(f, "("));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core/mod.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |             try!(write!(f, "{} => {}, ", key, val));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core/mod.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         try!(write!(f, "Equivalences: {}", self.equivalences_string()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn unify(&self, &Self, &Bindings<T>) -> Option<Bindings<T>>;
[INFO] [stdout]     |                     ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:186:28
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn unify(&self, &Self, &Bindings<T>) -> Option<Bindings<T>>;
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Bindings<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:189:30
[INFO] [stdout]     |
[INFO] [stdout] 189 |     fn apply_bindings(&self, &Bindings<T>) -> Option<Self>;
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Bindings<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:195:32
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn rename_variables(&self, &HashMap<String, String>) -> Self;
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &HashMap<String, String>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:209:25
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn snowflake(&self, String) -> Self;
[INFO] [stdout]     |                         ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/datum/mod.rs:47:45
[INFO] [stdout]    |
[INFO] [stdout] 47 |             Datum::Int(ref i_value) => Some((i_value.clone() as f64)),
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/infer/mod.rs:140:66
[INFO] [stdout]     |
[INFO] [stdout] 140 |     pub fn chain_until(&self, max_iterations: usize, satisfied: &Fn(&U) -> bool) -> (Option<(U, String)>, Self) {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&U) -> bool`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/pedigree/mod.rs:83:115
[INFO] [stdout]    |
[INFO] [stdout] 83 |                 Some((construct_id_origin_tuples_for_generation(generation), self.inf_graph.subsequent_inferences((generation_idx + 1))))
[INFO] [stdout]    |                                                                                                                   ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/pedigree/mod.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         /// Return unify derived from this one
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 137 |         self.pedigree.get_descendents(id)
[INFO] [stdout]     |         --------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/pedigree/mod.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         /// Return all unify derived in and after the specified generation
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 142 |         let mut subsequent_inferences = Vec::new();
[INFO] [stdout]     |         ------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/pedigree/mod.rs:250:23
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub elements: Vec<(Vec<(String, Option<Origin>)>)>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:383:50
[INFO] [stdout]     |
[INFO] [stdout] 383 | ...                   root_renderer: &Fn(String) -> String,
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:384:50
[INFO] [stdout]     |
[INFO] [stdout] 384 | ...                   node_renderer: &Fn(String) -> String,
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:385:55
[INFO] [stdout]     |
[INFO] [stdout] 385 | ...                   relation_renderder: &Fn(String, String) -> String,
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String, String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:399:55
[INFO] [stdout]     |
[INFO] [stdout] 399 | ...                   node_renderer: &Fn(String) -> String,
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:400:60
[INFO] [stdout]     |
[INFO] [stdout] 400 | ...                   relation_renderder: &Fn(String, String) -> String)
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String, String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:423:81
[INFO] [stdout]     |
[INFO] [stdout] 423 |     pub fn render_inference_tree_pedigree(&self, d_id: &String, node_renderer: &Fn(String) -> String) -> String {
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/planner/mod.rs:234:58
[INFO] [stdout]     |
[INFO] [stdout] 234 | ...                   criteria: &Fn(&Vec<Self>, &Bindings<T>) -> Option<X>)
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<Self>, &Bindings<T>) -> Option<X>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/utils.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn map_while_some<A, E>(iter: &mut Iterator<Item = E>, f: &Fn(E) -> Option<A>) -> Option<Vec<A>> {
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = E>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/utils.rs:8:64
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn map_while_some<A, E>(iter: &mut Iterator<Item = E>, f: &Fn(E) -> Option<A>) -> Option<Vec<A>> {
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(E) -> Option<A>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:20:54
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn fold_while_some<A, E>(init_acc: A, iter: &mut Iterator<Item = E>, f: &Fn(A, E) -> Option<A>) -> Option<A> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = E>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:20:78
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn fold_while_some<A, E>(init_acc: A, iter: &mut Iterator<Item = E>, f: &Fn(A, E) -> Option<A>) -> Option<A> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(A, E) -> Option<A>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/constraints/numerical.rs:126:33
[INFO] [stdout]     |
[INFO] [stdout] 126 | ...   |x: &T, y: &T, op: &Fn(f64, f64) -> f64| -> Option<T> { x.to_float().and_then(|x| y.to_float().and_then(|y| Some(T::float(op(x, y))...
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64, f64) -> f64`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/constraints/mod.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn float(f64) -> Self;
[INFO] [stdout]    |              ^^^ help: try naming the parameter or explicitly ignoring it: `_: f64`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/constraints/mod.rs:85:32
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn and_then(&self, f: &Fn(&Bindings<T>) -> Self) -> Self {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Bindings<T>) -> Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/constraints/mod.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn if_partial(&self, f: &Fn(&Bindings<T>) -> Self) -> Self {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Bindings<T>) -> Self`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core/mod.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |         try!(write!(f, "("));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core/mod.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |             try!(write!(f, "{} => {}, ", key, val));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core/mod.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         try!(write!(f, "Equivalences: {}", self.equivalences_string()));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn unify(&self, &Self, &Bindings<T>) -> Option<Bindings<T>>;
[INFO] [stdout]     |                     ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:186:28
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn unify(&self, &Self, &Bindings<T>) -> Option<Bindings<T>>;
[INFO] [stdout]     |                            ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Bindings<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:189:30
[INFO] [stdout]     |
[INFO] [stdout] 189 |     fn apply_bindings(&self, &Bindings<T>) -> Option<Self>;
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Bindings<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:195:32
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn rename_variables(&self, &HashMap<String, String>) -> Self;
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &HashMap<String, String>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/core/mod.rs:209:25
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn snowflake(&self, String) -> Self;
[INFO] [stdout]     |                         ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/datum/mod.rs:47:45
[INFO] [stdout]    |
[INFO] [stdout] 47 |             Datum::Int(ref i_value) => Some((i_value.clone() as f64)),
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/datum/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/infer/mod.rs:140:66
[INFO] [stdout]     |
[INFO] [stdout] 140 |     pub fn chain_until(&self, max_iterations: usize, satisfied: &Fn(&U) -> bool) -> (Option<(U, String)>, Self) {
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&U) -> bool`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/pedigree/mod.rs:83:115
[INFO] [stdout]    |
[INFO] [stdout] 83 |                 Some((construct_id_origin_tuples_for_generation(generation), self.inf_graph.subsequent_inferences((generation_idx + 1))))
[INFO] [stdout]    |                                                                                                                   ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/pedigree/mod.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         /// Return unify derived from this one
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 137 |         self.pedigree.get_descendents(id)
[INFO] [stdout]     |         --------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/pedigree/mod.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |         /// Return all unify derived in and after the specified generation
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 142 |         let mut subsequent_inferences = Vec::new();
[INFO] [stdout]     |         ------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `//` for a plain comment
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/pedigree/mod.rs:250:23
[INFO] [stdout]     |
[INFO] [stdout] 250 |     pub elements: Vec<(Vec<(String, Option<Origin>)>)>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:383:50
[INFO] [stdout]     |
[INFO] [stdout] 383 | ...                   root_renderer: &Fn(String) -> String,
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:384:50
[INFO] [stdout]     |
[INFO] [stdout] 384 | ...                   node_renderer: &Fn(String) -> String,
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:385:55
[INFO] [stdout]     |
[INFO] [stdout] 385 | ...                   relation_renderder: &Fn(String, String) -> String,
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String, String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:399:55
[INFO] [stdout]     |
[INFO] [stdout] 399 | ...                   node_renderer: &Fn(String) -> String,
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:400:60
[INFO] [stdout]     |
[INFO] [stdout] 400 | ...                   relation_renderder: &Fn(String, String) -> String)
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String, String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/pedigree/mod.rs:423:81
[INFO] [stdout]     |
[INFO] [stdout] 423 |     pub fn render_inference_tree_pedigree(&self, d_id: &String, node_renderer: &Fn(String) -> String) -> String {
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(String) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/planner/mod.rs:234:58
[INFO] [stdout]     |
[INFO] [stdout] 234 | ...                   criteria: &Fn(&Vec<Self>, &Bindings<T>) -> Option<X>)
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<Self>, &Bindings<T>) -> Option<X>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/utils.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn map_while_some<A, E>(iter: &mut Iterator<Item = E>, f: &Fn(E) -> Option<A>) -> Option<Vec<A>> {
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = E>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/utils.rs:8:64
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn map_while_some<A, E>(iter: &mut Iterator<Item = E>, f: &Fn(E) -> Option<A>) -> Option<Vec<A>> {
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(E) -> Option<A>`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:20:54
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn fold_while_some<A, E>(init_acc: A, iter: &mut Iterator<Item = E>, f: &Fn(A, E) -> Option<A>) -> Option<A> {
[INFO] [stdout]    |                                                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = E>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/utils.rs:20:78
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn fold_while_some<A, E>(init_acc: A, iter: &mut Iterator<Item = E>, f: &Fn(A, E) -> Option<A>) -> Option<A> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(A, E) -> Option<A>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pedigree/mod.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         let mut inner_descendents = self.descendents.get_mut(&source_id).unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pedigree/mod.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |         let mut inner_descendents = self.descendents.get_mut(&source_id).unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.29s
[INFO] running `Command { std: "docker" "inspect" "87dccf15530cccc1d2abc84fcadcd0cc65f9d57356931bc10e1d59e87022b1e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87dccf15530cccc1d2abc84fcadcd0cc65f9d57356931bc10e1d59e87022b1e8", kill_on_drop: false }`
[INFO] [stdout] 87dccf15530cccc1d2abc84fcadcd0cc65f9d57356931bc10e1d59e87022b1e8