[INFO] updating cached repository https://github.com/ThatsGobbles/cheffu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94231f8ac9f9ed33de065b2ab0e3d8809ed7dcb8
[INFO] testing ThatsGobbles/cheffu against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThatsGobbles%2Fcheffu" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ThatsGobbles/cheffu on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ThatsGobbles/cheffu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f3708a7fd8defd732f3dc0ac139cc98a963f7129cae973683ad16a8d9d72317b
[INFO] running `Command { std: "docker" "start" "-a" "f3708a7fd8defd732f3dc0ac139cc98a963f7129cae973683ad16a8d9d72317b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3708a7fd8defd732f3dc0ac139cc98a963f7129cae973683ad16a8d9d72317b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3708a7fd8defd732f3dc0ac139cc98a963f7129cae973683ad16a8d9d72317b", kill_on_drop: false }`
[INFO] [stdout] f3708a7fd8defd732f3dc0ac139cc98a963f7129cae973683ad16a8d9d72317b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 574ae983a2f920824712923e277427898ee98361cacfcaad9dd966af7022449b
[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" "574ae983a2f920824712923e277427898ee98361cacfcaad9dd966af7022449b", kill_on_drop: false }`
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.5.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling regex v0.2.7
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling cheffu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/parser/mod.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     /** Primitive types **/
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/parser/mod.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     /// Represents a fractional amount between 0 and 1, noninclusive.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser/mod.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     /** Tokens **/
[INFO] [stdout]     |     ^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser/mod.rs:158:5
[INFO] [stdout]     |
[INFO] [stdout] 158 |     /** Gates **/
[INFO] [stdout]     |     ^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser/mod.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 176 |     /** Flows **/
[INFO] [stdout]     |     ^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/parallel/gate.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / macro_rules! allow {
[INFO] [stdout] 12 | |     ( $($slot:expr),* $(,)? ) => (Gate::allow(vec!($($slot),*)));
[INFO] [stdout] 13 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/parallel/flow.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / macro_rules! splitset {
[INFO] [stdout] 13 | |     ( $($split:expr),* $(,)? ) => (SplitSet::new(btreeset!($($split),*)));
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]  --> src/processor/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use failure::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parallel/flow.rs:98:25
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     for mut result in &mut results {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/parallel/flow.rs:112:25
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     let mut split_set_walks = split_set.find_walks(target_slot, &mut slot_stack)?;
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `INGREDIENT_SIGIL`
[INFO] [stdout]  --> src/parser/mod.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const INGREDIENT_SIGIL: char = '*';
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MODIFIER_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const MODIFIER_SIGIL: char = ',';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ANNOTATION_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const ANNOTATION_SIGIL: char = ';';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ACTION_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const ACTION_SIGIL: char = '=';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `COMBINATION_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const COMBINATION_SIGIL: char = '/';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CONCRETE_TOKEN_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const CONCRETE_TOKEN_SIGIL: char = '*';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `OPERATOR_TOKEN_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const OPERATOR_TOKEN_SIGIL: char = '+';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `METADATA_TOKEN_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const METADATA_TOKEN_SIGIL: char = '&';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPLIT_SET_START`
[INFO] [stdout]   --> src/parser/mod.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const SPLIT_SET_START: char = '[';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPLIT_SET_CLOSE`
[INFO] [stdout]   --> src/parser/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const SPLIT_SET_CLOSE: char = ']';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPLIT_SET_SEPARATOR`
[INFO] [stdout]   --> src/parser/mod.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | const SPLIT_SET_SEPARATOR: char = '|';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `GATE_START`
[INFO] [stdout]   --> src/parser/mod.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | const GATE_START: char = '<';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `GATE_CLOSE`
[INFO] [stdout]   --> src/parser/mod.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const GATE_CLOSE: char = '>';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `GATE_INVERT_FLAG`
[INFO] [stdout]   --> src/parser/mod.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | const GATE_INVERT_FLAG: char = '!';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EMPTY_FLOW_FLAG`
[INFO] [stdout]   --> src/parser/mod.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | const EMPTY_FLOW_FLAG: char = '~';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_START_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | const VAR_SPLIT_START_SIGIL: char = '[';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_CLOSE_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | const VAR_SPLIT_CLOSE_SIGIL: char = ']';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_SEP_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | const VAR_SPLIT_SEP_SIGIL: char = '|';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_TAG_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | const VAR_SPLIT_TAG_SIGIL: char = '#';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_SLOT_SEP_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | const VAR_SPLIT_SLOT_SEP_SIGIL: char = ',';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_INV_SLOT_FLAG_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | const VAR_SPLIT_INV_SLOT_FLAG_SIGIL: char = '!';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parsers`
[INFO] [stdout]   --> src/parser/mod.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Parsers;
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ingredient`
[INFO] [stdout]   --> src/processor/mod.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Ingredient(Ingredient),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Compound`
[INFO] [stdout]   --> src/processor/mod.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     Compound(Box<Mixture>, Box<Mixture>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Container`
[INFO] [stdout]   --> src/processor/mod.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Container(Container),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Appliance`
[INFO] [stdout]   --> src/processor/mod.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     Appliance(Appliance),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Operatable`
[INFO] [stdout]   --> src/processor/mod.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub enum Operatable {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_operatable_stack`
[INFO] [stdout]    --> src/processor/mod.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn create_operatable_stack<II: IntoIterator<Item = Token>>(tokens: II) -> Vec<Operatable> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Concrete`
[INFO] [stdout]    --> src/processor/mod.rs:111:10
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub enum Concrete {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `macro_at_most_once_rep` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_or_default)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 41 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.07s
[INFO] running `Command { std: "docker" "inspect" "574ae983a2f920824712923e277427898ee98361cacfcaad9dd966af7022449b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "574ae983a2f920824712923e277427898ee98361cacfcaad9dd966af7022449b", kill_on_drop: false }`
[INFO] [stdout] 574ae983a2f920824712923e277427898ee98361cacfcaad9dd966af7022449b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 852806d1126a097b154bc8b20e0c5a0ddae08948aa7db2d06906ac4773d025c0
[INFO] running `Command { std: "docker" "start" "-a" "852806d1126a097b154bc8b20e0c5a0ddae08948aa7db2d06906ac4773d025c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling cheffu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/parser/mod.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     /** Primitive types **/
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/parser/mod.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     /// Represents a fractional amount between 0 and 1, noninclusive.
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser/mod.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     /** Tokens **/
[INFO] [stdout]     |     ^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser/mod.rs:158:5
[INFO] [stdout]     |
[INFO] [stdout] 158 |     /** Gates **/
[INFO] [stdout]     |     ^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/parser/mod.rs:176:5
[INFO] [stdout]     |
[INFO] [stdout] 176 |     /** Flows **/
[INFO] [stdout]     |     ^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FlowItem`, `Flow`, `SplitSet`, `Split`
[INFO] [stdout]    --> src/parser/mod.rs:227:39
[INFO] [stdout]     |
[INFO] [stdout] 227 |     #[macro_use] use parallel::flow::{Flow, FlowItem, SplitSet, Split};
[INFO] [stdout]     |                                       ^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `failure::Error`
[INFO] [stdout]  --> src/processor/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use failure::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parallel/flow.rs:98:25
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     for mut result in &mut results {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/parallel/flow.rs:112:25
[INFO] [stdout]     |
[INFO] [stdout] 112 |                     let mut split_set_walks = split_set.find_walks(target_slot, &mut slot_stack)?;
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CONCRETE_TOKEN_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const CONCRETE_TOKEN_SIGIL: char = '*';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `OPERATOR_TOKEN_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const OPERATOR_TOKEN_SIGIL: char = '+';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `METADATA_TOKEN_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const METADATA_TOKEN_SIGIL: char = '&';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPLIT_SET_START`
[INFO] [stdout]   --> src/parser/mod.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const SPLIT_SET_START: char = '[';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPLIT_SET_CLOSE`
[INFO] [stdout]   --> src/parser/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const SPLIT_SET_CLOSE: char = ']';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPLIT_SET_SEPARATOR`
[INFO] [stdout]   --> src/parser/mod.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | const SPLIT_SET_SEPARATOR: char = '|';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `GATE_START`
[INFO] [stdout]   --> src/parser/mod.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | const GATE_START: char = '<';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `GATE_CLOSE`
[INFO] [stdout]   --> src/parser/mod.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const GATE_CLOSE: char = '>';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `GATE_INVERT_FLAG`
[INFO] [stdout]   --> src/parser/mod.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | const GATE_INVERT_FLAG: char = '!';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EMPTY_FLOW_FLAG`
[INFO] [stdout]   --> src/parser/mod.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | const EMPTY_FLOW_FLAG: char = '~';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_START_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | const VAR_SPLIT_START_SIGIL: char = '[';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_CLOSE_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | const VAR_SPLIT_CLOSE_SIGIL: char = ']';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VAR_SPLIT_SEP_SIGIL`
[INFO] [stdout]   --> src/parser/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | const VAR_SPLIT_SEP_SIGIL: char = '|';
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Ingredient`
[INFO] [stdout]   --> src/processor/mod.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Ingredient(Ingredient),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Compound`
[INFO] [stdout]   --> src/processor/mod.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     Compound(Box<Mixture>, Box<Mixture>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Container`
[INFO] [stdout]   --> src/processor/mod.rs:69:5
[INFO] [stdout]    |
[INFO] [stdout] 69 |     Container(Container),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Appliance`
[INFO] [stdout]   --> src/processor/mod.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     Appliance(Appliance),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Operatable`
[INFO] [stdout]   --> src/processor/mod.rs:80:10
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub enum Operatable {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_operatable_stack`
[INFO] [stdout]    --> src/processor/mod.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn create_operatable_stack<II: IntoIterator<Item = Token>>(tokens: II) -> Vec<Operatable> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Concrete`
[INFO] [stdout]    --> src/processor/mod.rs:111:10
[INFO] [stdout]     |
[INFO] [stdout] 111 | pub enum Concrete {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `macro_at_most_once_rep` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `entry_or_default` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_or_default)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]    --> src/parser/mod.rs:226:5
[INFO] [stdout]     |
[INFO] [stdout] 226 |     #[macro_use] use parallel::gate::Gate;
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]    --> src/parser/mod.rs:227:5
[INFO] [stdout]     |
[INFO] [stdout] 227 |     #[macro_use] use parallel::flow::{Flow, FlowItem, SplitSet, Split};
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.77s
[INFO] running `Command { std: "docker" "inspect" "852806d1126a097b154bc8b20e0c5a0ddae08948aa7db2d06906ac4773d025c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "852806d1126a097b154bc8b20e0c5a0ddae08948aa7db2d06906ac4773d025c0", kill_on_drop: false }`
[INFO] [stdout] 852806d1126a097b154bc8b20e0c5a0ddae08948aa7db2d06906ac4773d025c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 019c799ac698d1e1cad515a7fd6e0f5cc73ef361f18deebdd178fecf79ebc195
[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" "019c799ac698d1e1cad515a7fd6e0f5cc73ef361f18deebdd178fecf79ebc195", kill_on_drop: false }`
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/parser/mod.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     /** Primitive types **/
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/parser/mod.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     /// Represents a fractional amount between 0 and 1, noninclusive.
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/parser/mod.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     /** Tokens **/
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/parser/mod.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     /** Gates **/
[INFO] [stderr]     |     ^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/parser/mod.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     /** Flows **/
[INFO] [stderr]     |     ^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[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: constant 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 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 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 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 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 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 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 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 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 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 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 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 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:80:10
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub enum Operatable {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `create_operatable_stack`
[INFO] [stderr]    --> src/processor/mod.rs:102:12
[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:111:10
[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] warning: 33 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cheffu-e676b4de4e9ee93a
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stdout] test parallel::gate::tests::test_slots ... ok
[INFO] [stdout] test parallel::gate::tests::test_is_block_all ... ok
[INFO] [stdout] test parallel::gate::tests::test_is_block ... ok
[INFO] [stdout] test parallel::gate::tests::test_blocks_slot ... ok
[INFO] [stdout] test parser::tests::test_annotation_token ... ok
[INFO] [stdout] test parser::tests::test_decimal_repr ... ok
[INFO] [stdout] test parallel::gate::tests::test_is_allow ... ok
[INFO] [stdout] test parallel::gate::tests::test_invert ... ok
[INFO] [stdout] test parallel::gate::tests::test_allow_all ... ok
[INFO] [stdout] test parallel::gate::tests::test_block_all ... ok
[INFO] [stdout] test parallel::gate::tests::test_allows_slot ... ok
[INFO] [stdout] test parallel::gate::tests::test_is_allow_all ... ok
[INFO] [stdout] test parser::tests::test_action_token ... ok
[INFO] [stdout] test parser::tests::test_combination_token ... ok
[INFO] [stdout] test parallel::gate::tests::test_intersection ... ok
[INFO] [stdout] test parallel::gate::tests::test_union ... ok
[INFO] [stdout] test parser::tests::test_nz_rational_repr ... ok
[INFO] [stdout] test parser::tests::test_integer_repr ... ok
[INFO] [stdout] test parallel::gate::tests::test_difference ... ok
[INFO] [stdout] test parallel::gate::tests::test_sym_difference ... ok
[INFO] [stdout] test parser::tests::test_modifier_token ... ok
[INFO] [stdout] test parser::tests::test_nz_integer_repr ... ok
[INFO] [stdout] test parser::tests::test_ingredient_token ... ok
[INFO] [stdout] test parser::tests::test_gate ... ok
[INFO] [stdout] test parser::tests::test_nz_decimal_repr ... ok
[INFO] [stdout] test parser::tests::test_slot ... ok
[INFO] [stdout] test parser::tests::test_token ... ok
[INFO] [stdout] test parser::tests::test_rational_repr ... ok
[INFO] [stdout] test parallel::flow::tests::test_find_walks ... ok
[INFO] [stdout] test parallel::flow::tests::test_normalize_splits ... ok
[INFO] [stdout] test parser::tests::test_phrase ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "019c799ac698d1e1cad515a7fd6e0f5cc73ef361f18deebdd178fecf79ebc195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "019c799ac698d1e1cad515a7fd6e0f5cc73ef361f18deebdd178fecf79ebc195", kill_on_drop: false }`
[INFO] [stdout] 019c799ac698d1e1cad515a7fd6e0f5cc73ef361f18deebdd178fecf79ebc195