[INFO] cloning repository https://github.com/danicampa90/helmod-graphviz
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danicampa90/helmod-graphviz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanicampa90%2Fhelmod-graphviz"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanicampa90%2Fhelmod-graphviz'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 09be196533036586011ee7a118fd1c5f917ff359
[INFO] checking danicampa90/helmod-graphviz against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanicampa90%2Fhelmod-graphviz" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danicampa90/helmod-graphviz on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/danicampa90/helmod-graphviz
[INFO] finished tweaking git repo https://github.com/danicampa90/helmod-graphviz
[INFO] tweaked toml for git repo https://github.com/danicampa90/helmod-graphviz written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/danicampa90/helmod-graphviz already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 95e655b1a44fc729d841ef65811631eeb8bb83b7149f708cf19772b633fc22d9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "95e655b1a44fc729d841ef65811631eeb8bb83b7149f708cf19772b633fc22d9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling lalrpop-util v0.17.2
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking ryu v1.0.2
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling helmod-planner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Recipe`
[INFO] [stderr]  --> src/dot_writer.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::recipes::{Recipe, RecipeDatabase};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]   --> src/dot_writer.rs:62:19
[INFO] [stderr]    |
[INFO] [stderr] 62 |             match (recipes.get_recipe(&prod_recipe.name)) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::grammar`
[INFO] [stderr]  --> src/grammar_tests.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::grammar;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LuaArray`, `LuaValue`
[INFO] [stderr]  --> src/productionchain/productionchainparser.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::ast::{CastError, IndexingError, LuaArray, LuaObject, LuaValue};
[INFO] [stderr]   |                                            ^^^^^^^^             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/recipes.rs:68:16
[INFO] [stderr]    |
[INFO] [stderr] 68 |             if (nodes.is_object() && nodes.as_object().unwrap().len() == 0) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]   --> src/main.rs:44:19
[INFO] [stderr]    |
[INFO] [stderr] 44 |             match (recipes_result) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]    --> src/main.rs:106:19
[INFO] [stderr]     |
[INFO] [stderr] 106 |             match (recipes.get_recipe(&prod_recipe.name)) {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Recipe`
[INFO] [stderr]  --> src/dot_writer.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::recipes::{Recipe, RecipeDatabase};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]   --> src/dot_writer.rs:62:19
[INFO] [stderr]    |
[INFO] [stderr] 62 |             match (recipes.get_recipe(&prod_recipe.name)) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `LuaArray`, `LuaValue`
[INFO] [stderr]  --> src/productionchain/productionchainparser.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::ast::{CastError, IndexingError, LuaArray, LuaObject, LuaValue};
[INFO] [stderr]   |                                            ^^^^^^^^             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/recipes.rs:68:16
[INFO] [stderr]    |
[INFO] [stderr] 68 |             if (nodes.is_object() && nodes.as_object().unwrap().len() == 0) {
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]   --> src/main.rs:44:19
[INFO] [stderr]    |
[INFO] [stderr] 44 |             match (recipes_result) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `match` head expression
[INFO] [stderr]    --> src/main.rs:106:19
[INFO] [stderr]     |
[INFO] [stderr] 106 |             match (recipes.get_recipe(&prod_recipe.name)) {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ingredients_node`
[INFO] [stderr]   --> src/recipes.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let ingredients_node = return Ok(Recipe {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_ingredients_node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ItemQtyList`
[INFO] [stderr]  --> src/productionchain.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type ItemQtyList = Vec<(String, f64)>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_print`
[INFO] [stderr]   --> src/main.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn debug_print(prod_chain: ProductionChain, recipes: RecipeDatabase) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |             writeln!(file, r#"  "{0}" [label = "{0}" shape="rectangle"];"#, name);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         writeln!(
[INFO] [stderr] 35 | |             file,
[INFO] [stderr] 36 | |             r#"digraph "{0} - {1}" {{"#,
[INFO] [stderr] 37 | |             prod_block.name, prod_block.count
[INFO] [stderr] 38 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 | /         writeln!(
[INFO] [stderr] 41 | |             file,
[INFO] [stderr] 42 | |             r#"  input [label = "<input>" shape=circle color=grey];"#
[INFO] [stderr] 43 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 | /             writeln!(
[INFO] [stderr] 49 | |                 file,
[INFO] [stderr] 50 | |                 r#"  input -> "{0}" [color="grey", label="{1}"];"#,
[INFO] [stderr] 51 | |                 name, count
[INFO] [stderr] 52 | |             );
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         writeln!(file, r"");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 | /                     writeln!(
[INFO] [stderr] 65 | |                         file,
[INFO] [stderr] 66 | |                         r#"  "Rec_{0}" [label = "{0}*{1}" shape=circle color=grey]"#,
[INFO] [stderr] 67 | |                         prod_recipe.name, prod_recipe.output_count
[INFO] [stderr] 68 | |                     );
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:72:25
[INFO] [stderr]    |
[INFO] [stderr] 72 | /                         writeln!(
[INFO] [stderr] 73 | |                             file,
[INFO] [stderr] 74 | |                             r#"  "{0}" -> "Rec_{1}" [label = "{2:.2}" color=red]"#,
[INFO] [stderr] 75 | |                             ingr.name,
[INFO] [stderr] ...  |
[INFO] [stderr] 78 | |                                 / recipe.energy
[INFO] [stderr] 79 | |                         );
[INFO] [stderr]    | |__________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:84:25
[INFO] [stderr]    |
[INFO] [stderr] 84 | /                         writeln!(
[INFO] [stderr] 85 | |                             file,
[INFO] [stderr] 86 | |                             r#"  "Rec_{1}" -> "{0}" [label = "{2:.2}" color=green]"#,
[INFO] [stderr] 87 | |                             ingr.name,
[INFO] [stderr] ...  |
[INFO] [stderr] 90 | |                                 / recipe.energy
[INFO] [stderr] 91 | |                         );
[INFO] [stderr]    | |__________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 | /                     writeln!(
[INFO] [stderr] 96 | |                         file,
[INFO] [stderr] 97 | |                         r#"  "Rec_{0}" [label="RECIPE NOT FOUND: {0}" color=red shape=star]"#,
[INFO] [stderr] 98 | |                         prod_recipe.name
[INFO] [stderr] 99 | |                     );
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         writeln!(file, r#"}}"#);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     write!(makefile, "all:");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         write!(makefile, " {0}.png", i);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     writeln!(makefile, "");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     writeln!(makefile, ".PHONY: all");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |         writeln!(makefile, r#"{0}.png: {0}.dot"#, i);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |         writeln!(makefile, r#"    dot -Tpng {0}.dot -o {0}.png"#, i);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ingredients_node`
[INFO] [stderr]   --> src/recipes.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let ingredients_node = return Ok(Recipe {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_ingredients_node`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `ItemQtyList`
[INFO] [stderr]  --> src/productionchain.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type ItemQtyList = Vec<(String, f64)>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_print`
[INFO] [stderr]   --> src/main.rs:88:4
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn debug_print(prod_chain: ProductionChain, recipes: RecipeDatabase) {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |             writeln!(file, r#"  "{0}" [label = "{0}" shape="rectangle"];"#, name);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         writeln!(
[INFO] [stderr] 35 | |             file,
[INFO] [stderr] 36 | |             r#"digraph "{0} - {1}" {{"#,
[INFO] [stderr] 37 | |             prod_block.name, prod_block.count
[INFO] [stderr] 38 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 | /         writeln!(
[INFO] [stderr] 41 | |             file,
[INFO] [stderr] 42 | |             r#"  input [label = "<input>" shape=circle color=grey];"#
[INFO] [stderr] 43 | |         );
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 | /             writeln!(
[INFO] [stderr] 49 | |                 file,
[INFO] [stderr] 50 | |                 r#"  input -> "{0}" [color="grey", label="{1}"];"#,
[INFO] [stderr] 51 | |                 name, count
[INFO] [stderr] 52 | |             );
[INFO] [stderr]    | |______________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         writeln!(file, r"");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 | /                     writeln!(
[INFO] [stderr] 65 | |                         file,
[INFO] [stderr] 66 | |                         r#"  "Rec_{0}" [label = "{0}*{1}" shape=circle color=grey]"#,
[INFO] [stderr] 67 | |                         prod_recipe.name, prod_recipe.output_count
[INFO] [stderr] 68 | |                     );
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:72:25
[INFO] [stderr]    |
[INFO] [stderr] 72 | /                         writeln!(
[INFO] [stderr] 73 | |                             file,
[INFO] [stderr] 74 | |                             r#"  "{0}" -> "Rec_{1}" [label = "{2:.2}" color=red]"#,
[INFO] [stderr] 75 | |                             ingr.name,
[INFO] [stderr] ...  |
[INFO] [stderr] 78 | |                                 / recipe.energy
[INFO] [stderr] 79 | |                         );
[INFO] [stderr]    | |__________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:84:25
[INFO] [stderr]    |
[INFO] [stderr] 84 | /                         writeln!(
[INFO] [stderr] 85 | |                             file,
[INFO] [stderr] 86 | |                             r#"  "Rec_{1}" -> "{0}" [label = "{2:.2}" color=green]"#,
[INFO] [stderr] 87 | |                             ingr.name,
[INFO] [stderr] ...  |
[INFO] [stderr] 90 | |                                 / recipe.energy
[INFO] [stderr] 91 | |                         );
[INFO] [stderr]    | |__________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dot_writer.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 | /                     writeln!(
[INFO] [stderr] 96 | |                         file,
[INFO] [stderr] 97 | |                         r#"  "Rec_{0}" [label="RECIPE NOT FOUND: {0}" color=red shape=star]"#,
[INFO] [stderr] 98 | |                         prod_recipe.name
[INFO] [stderr] 99 | |                     );
[INFO] [stderr]    | |______________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         writeln!(file, r#"}}"#);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     write!(makefile, "all:");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         write!(makefile, " {0}.png", i);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     writeln!(makefile, "");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     writeln!(makefile, ".PHONY: all");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |         writeln!(makefile, r#"{0}.png: {0}.dot"#, i);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/dot_writer.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |         writeln!(makefile, r#"    dot -Tpng {0}.dot -o {0}.png"#, i);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 32s
[INFO] running `"docker" "inspect" "95e655b1a44fc729d841ef65811631eeb8bb83b7149f708cf19772b633fc22d9"`
[INFO] running `"docker" "rm" "-f" "95e655b1a44fc729d841ef65811631eeb8bb83b7149f708cf19772b633fc22d9"`
[INFO] [stdout] 95e655b1a44fc729d841ef65811631eeb8bb83b7149f708cf19772b633fc22d9