[INFO] cloning repository https://github.com/ThatsGobbles/cheffu
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ThatsGobbles/cheffu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 94231f8ac9f9ed33de065b2ab0e3d8809ed7dcb8
[INFO] checking ThatsGobbles/cheffu against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ThatsGobbles/cheffu on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ThatsGobbles/cheffu
[INFO] finished tweaking git repo https://github.com/ThatsGobbles/cheffu
[INFO] tweaked toml for git repo https://github.com/ThatsGobbles/cheffu written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ThatsGobbles/cheffu already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f2b70b50827669c3b6554dac6e2249e011b65085d51d114f8e509cff86ad6c51
[INFO] running `"docker" "start" "-a" "f2b70b50827669c3b6554dac6e2249e011b65085d51d114f8e509cff86ad6c51"`
[INFO] [stderr]     Checking rustc-demangle v0.1.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking regex-syntax v0.5.0
[INFO] [stderr]     Checking regex v0.2.7
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking backtrace v0.3.5
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking cheffu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/parallel/gate.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / macro_rules! allow {
[INFO] [stderr] 12 | |     ( $($slot:expr),* $(,)? ) => (Gate::allow(vec!($($slot),*)));
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/parallel/flow.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / macro_rules! splitset {
[INFO] [stderr] 13 | |     ( $($split:expr),* $(,)? ) => (SplitSet::new(btreeset!($($split),*)));
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `failure::Error`
[INFO] [stderr]  --> src/processor/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use failure::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FlowItem`, `Flow`, `SplitSet`, `Split`
[INFO] [stderr]    --> src/parser/mod.rs:227:39
[INFO] [stderr]     |
[INFO] [stderr] 227 |     #[macro_use] use parallel::flow::{Flow, FlowItem, SplitSet, Split};
[INFO] [stderr]     |                                       ^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `failure::Error`
[INFO] [stderr]  --> src/processor/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use failure::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parallel/flow.rs:98:25
[INFO] [stderr]    |
[INFO] [stderr] 98 |                     for mut result in &mut results {
[INFO] [stderr]    |                         ----^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parallel/flow.rs:112:25
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     let mut split_set_walks = split_set.find_walks(target_slot, &mut slot_stack)?;
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parallel/flow.rs:98:25
[INFO] [stderr]    |
[INFO] [stderr] 98 |                     for mut result in &mut results {
[INFO] [stderr]    |                         ----^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/parallel/flow.rs:112:25
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     let mut split_set_walks = split_set.find_walks(target_slot, &mut slot_stack)?;
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INGREDIENT_SIGIL`
[INFO] [stderr]  --> src/parser/mod.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | const INGREDIENT_SIGIL: char = '*';
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MODIFIER_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const MODIFIER_SIGIL: char = ',';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ANNOTATION_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const ANNOTATION_SIGIL: char = ';';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ACTION_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | const ACTION_SIGIL: char = '=';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `COMBINATION_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const COMBINATION_SIGIL: char = '/';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CONCRETE_TOKEN_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const CONCRETE_TOKEN_SIGIL: char = '*';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `OPERATOR_TOKEN_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const OPERATOR_TOKEN_SIGIL: char = '+';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `METADATA_TOKEN_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const METADATA_TOKEN_SIGIL: char = '&';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPLIT_SET_START`
[INFO] [stderr]   --> src/parser/mod.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const SPLIT_SET_START: char = '[';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPLIT_SET_CLOSE`
[INFO] [stderr]   --> src/parser/mod.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const SPLIT_SET_CLOSE: char = ']';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPLIT_SET_SEPARATOR`
[INFO] [stderr]   --> src/parser/mod.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const SPLIT_SET_SEPARATOR: char = '|';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GATE_START`
[INFO] [stderr]   --> src/parser/mod.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const GATE_START: char = '<';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GATE_CLOSE`
[INFO] [stderr]   --> src/parser/mod.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const GATE_CLOSE: char = '>';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GATE_INVERT_FLAG`
[INFO] [stderr]   --> src/parser/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const GATE_INVERT_FLAG: char = '!';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EMPTY_FLOW_FLAG`
[INFO] [stderr]   --> src/parser/mod.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const EMPTY_FLOW_FLAG: char = '~';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_START_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const VAR_SPLIT_START_SIGIL: char = '[';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_CLOSE_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const VAR_SPLIT_CLOSE_SIGIL: char = ']';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_SEP_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | const VAR_SPLIT_SEP_SIGIL: char = '|';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_TAG_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | const VAR_SPLIT_TAG_SIGIL: char = '#';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_SLOT_SEP_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | const VAR_SPLIT_SLOT_SEP_SIGIL: char = ',';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_INV_SLOT_FLAG_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | const VAR_SPLIT_INV_SLOT_FLAG_SIGIL: char = '!';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parsers`
[INFO] [stderr]   --> src/parser/mod.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct Parsers;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ingredient`
[INFO] [stderr]   --> src/processor/mod.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     Ingredient(Ingredient),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Compound`
[INFO] [stderr]   --> src/processor/mod.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     Compound(Box<Mixture>, Box<Mixture>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Container`
[INFO] [stderr]   --> src/processor/mod.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     Container(Container),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Appliance`
[INFO] [stderr]   --> src/processor/mod.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     Appliance(Appliance),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Operatable`
[INFO] [stderr]   --> src/processor/mod.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub enum Operatable {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_operatable_stack`
[INFO] [stderr]    --> src/processor/mod.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn create_operatable_stack<II: IntoIterator<Item = Token>>(tokens: II) -> Vec<Operatable> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Concrete`
[INFO] [stderr]    --> src/processor/mod.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | pub enum Concrete {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `macro_at_most_once_rep` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(entry_or_default)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CONCRETE_TOKEN_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const CONCRETE_TOKEN_SIGIL: char = '*';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `OPERATOR_TOKEN_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const OPERATOR_TOKEN_SIGIL: char = '+';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `METADATA_TOKEN_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const METADATA_TOKEN_SIGIL: char = '&';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPLIT_SET_START`
[INFO] [stderr]   --> src/parser/mod.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const SPLIT_SET_START: char = '[';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPLIT_SET_CLOSE`
[INFO] [stderr]   --> src/parser/mod.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const SPLIT_SET_CLOSE: char = ']';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SPLIT_SET_SEPARATOR`
[INFO] [stderr]   --> src/parser/mod.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const SPLIT_SET_SEPARATOR: char = '|';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GATE_START`
[INFO] [stderr]   --> src/parser/mod.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | const GATE_START: char = '<';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GATE_CLOSE`
[INFO] [stderr]   --> src/parser/mod.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const GATE_CLOSE: char = '>';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GATE_INVERT_FLAG`
[INFO] [stderr]   --> src/parser/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const GATE_INVERT_FLAG: char = '!';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EMPTY_FLOW_FLAG`
[INFO] [stderr]   --> src/parser/mod.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const EMPTY_FLOW_FLAG: char = '~';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_START_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const VAR_SPLIT_START_SIGIL: char = '[';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_CLOSE_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const VAR_SPLIT_CLOSE_SIGIL: char = ']';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `VAR_SPLIT_SEP_SIGIL`
[INFO] [stderr]   --> src/parser/mod.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | const VAR_SPLIT_SEP_SIGIL: char = '|';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ingredient`
[INFO] [stderr]   --> src/processor/mod.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     Ingredient(Ingredient),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Compound`
[INFO] [stderr]   --> src/processor/mod.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     Compound(Box<Mixture>, Box<Mixture>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Container`
[INFO] [stderr]   --> src/processor/mod.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     Container(Container),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Appliance`
[INFO] [stderr]   --> src/processor/mod.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     Appliance(Appliance),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Operatable`
[INFO] [stderr]   --> src/processor/mod.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub enum Operatable {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_operatable_stack`
[INFO] [stderr]    --> src/processor/mod.rs:102:5
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn create_operatable_stack<II: IntoIterator<Item = Token>>(tokens: II) -> Vec<Operatable> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Concrete`
[INFO] [stderr]    --> src/processor/mod.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | pub enum Concrete {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `macro_at_most_once_rep` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(entry_or_default)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/parser/mod.rs:226:5
[INFO] [stderr]     |
[INFO] [stderr] 226 |     #[macro_use] use parallel::gate::Gate;
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/parser/mod.rs:227:5
[INFO] [stderr]     |
[INFO] [stderr] 227 |     #[macro_use] use parallel::flow::{Flow, FlowItem, SplitSet, Split};
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.23s
[INFO] running `"docker" "inspect" "f2b70b50827669c3b6554dac6e2249e011b65085d51d114f8e509cff86ad6c51"`
[INFO] running `"docker" "rm" "-f" "f2b70b50827669c3b6554dac6e2249e011b65085d51d114f8e509cff86ad6c51"`
[INFO] [stdout] f2b70b50827669c3b6554dac6e2249e011b65085d51d114f8e509cff86ad6c51