[INFO] cloning repository https://github.com/mantal/expert_system
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mantal/expert_system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmantal%2Fexpert_system", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmantal%2Fexpert_system'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 873622fa400d5bd721e592f22561e98860f69536
[INFO] testing mantal/expert_system against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmantal%2Fexpert_system" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mantal/expert_system on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mantal/expert_system
[INFO] finished tweaking git repo https://github.com/mantal/expert_system
[INFO] tweaked toml for git repo https://github.com/mantal/expert_system written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/mantal/expert_system already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-segmentation v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e69d47bf8965d179b567b4c97b63e578a8b463bd28a9a0d538b850fbe3b019b
[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" "8e69d47bf8965d179b567b4c97b63e578a8b463bd28a9a0d538b850fbe3b019b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e69d47bf8965d179b567b4c97b63e578a8b463bd28a9a0d538b850fbe3b019b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e69d47bf8965d179b567b4c97b63e578a8b463bd28a9a0d538b850fbe3b019b", kill_on_drop: false }`
[INFO] [stdout] 8e69d47bf8965d179b567b4c97b63e578a8b463bd28a9a0d538b850fbe3b019b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dc43d0ad237c72bd3cc8ecda2ae709f20f4fb2ac36a2e4f657f32af0d4f24f9
[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" "3dc43d0ad237c72bd3cc8ecda2ae709f20f4fb2ac36a2e4f657f32af0d4f24f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling expert_system v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rule`
[INFO] [stdout]  --> src/tests/eval.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rule;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rule::Rule`
[INFO] [stdout]  --> src/tests/eval.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rule::Rule;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Token`
[INFO] [stdout]  --> src/tests/eval.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Operators`
[INFO] [stdout]  --> src/tests/eval.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use token::Operators;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Operators::Value`
[INFO] [stdout]  --> src/tests/eval.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use token::Operators::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Operators`
[INFO] [stdout]  --> src/tests/rules.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use token::Operators;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Operators::Value`
[INFO] [stdout]  --> src/tests/rules.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use token::Operators::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rule::Rule`
[INFO] [stdout]  --> src/tests/rules.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rule::Rule;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::*`
[INFO] [stdout]  --> src/tests/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser`
[INFO] [stdout]  --> src/tests/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use parser;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token`
[INFO] [stdout]  --> src/tests/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use token;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Token`
[INFO] [stdout]  --> src/tests/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use token::Token;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Operators`
[INFO] [stdout]  --> src/tests/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use token::Operators;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rule`
[INFO] [stdout]  --> src/tests/parser.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rule;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rule::Rule`
[INFO] [stdout]  --> src/tests/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rule::Rule;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bracket_open` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         Bracket_open,
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BracketOpen`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bracket_close` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         Bracket_close,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BracketClose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `implies` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         implies,
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Implies`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `if_and_only_if` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         if_and_only_if
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IfAndOnlyIf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> src/main.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{self, Read, Write};
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:54:58
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Err(e) => panic!("Could not read stdin: {}", Error::description(&e)),
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/parser.rs:29:72
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Err(e) => panic!("Could not open {}: {}", real_path.display(), Error::description(&e)),
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/parser.rs:35:72
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(e) => panic!("Could not read {}: {}", real_path.display(), Error::description(&e)),
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/parser.rs:124:42
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 Operators::Type::Operand{ref name} => (),
[INFO] [stdout]     |                                          ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/parser.rs:135:42
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 Operators::Type::Operand{ref name} => (),
[INFO] [stdout]     |                                          ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/parser.rs:147:46
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     Operators::Type::Operand{ref name} => (),
[INFO] [stdout]     |                                              ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.64s
[INFO] running `Command { std: "docker" "inspect" "3dc43d0ad237c72bd3cc8ecda2ae709f20f4fb2ac36a2e4f657f32af0d4f24f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc43d0ad237c72bd3cc8ecda2ae709f20f4fb2ac36a2e4f657f32af0d4f24f9", kill_on_drop: false }`
[INFO] [stdout] 3dc43d0ad237c72bd3cc8ecda2ae709f20f4fb2ac36a2e4f657f32af0d4f24f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74b21b5403794497c055558e80bc2a4242fff7b96e09d356c7e31cd6b029d3fe
[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" "74b21b5403794497c055558e80bc2a4242fff7b96e09d356c7e31cd6b029d3fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling expert_system v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::super::*`
[INFO] [stdout]  --> src/tests/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::super::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Operators`
[INFO] [stdout]  --> src/tests/parser.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use token::Operators;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rule`
[INFO] [stdout]  --> src/tests/parser.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rule;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bracket_open` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |         Bracket_open,
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BracketOpen`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Bracket_close` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |         Bracket_close,
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BracketClose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `implies` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         implies,
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Implies`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `if_and_only_if` should have an upper camel case name
[INFO] [stdout]   --> src/token.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         if_and_only_if
[INFO] [stdout]    |         ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IfAndOnlyIf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]   --> src/main.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::{self, Read, Write};
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/main.rs:54:58
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Err(e) => panic!("Could not read stdin: {}", Error::description(&e)),
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/parser.rs:29:72
[INFO] [stdout]    |
[INFO] [stdout] 29 |         Err(e) => panic!("Could not open {}: {}", real_path.display(), Error::description(&e)),
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/parser.rs:35:72
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Err(e) => panic!("Could not read {}: {}", real_path.display(), Error::description(&e)),
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/tests/parser.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let file = parser::get_file("src/tests/in/404".to_string());
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rules`
[INFO] [stdout]   --> src/tests/parser.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut rules: Vec<Rule> = Vec::new();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rules`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/parser.rs:124:42
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 Operators::Type::Operand{ref name} => (),
[INFO] [stdout]     |                                          ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/parser.rs:135:42
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 Operators::Type::Operand{ref name} => (),
[INFO] [stdout]     |                                          ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/parser.rs:147:46
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     Operators::Type::Operand{ref name} => (),
[INFO] [stdout]     |                                              ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tests/parser.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut rules: Vec<Rule> = Vec::new();
[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: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "74b21b5403794497c055558e80bc2a4242fff7b96e09d356c7e31cd6b029d3fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74b21b5403794497c055558e80bc2a4242fff7b96e09d356c7e31cd6b029d3fe", kill_on_drop: false }`
[INFO] [stdout] 74b21b5403794497c055558e80bc2a4242fff7b96e09d356c7e31cd6b029d3fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fcd32ca1fcd310c0453f8ec8194739c48641690ccf31250adc06994566a5df12
[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" "fcd32ca1fcd310c0453f8ec8194739c48641690ccf31250adc06994566a5df12", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `super::super::*`
[INFO] [stderr]  --> src/tests/parser.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use super::super::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `token::Operators`
[INFO] [stderr]  --> src/tests/parser.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use token::Operators;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rule`
[INFO] [stderr]  --> src/tests/parser.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rule;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Bracket_open` should have an upper camel case name
[INFO] [stderr]   --> src/token.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         Bracket_open,
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BracketOpen`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Bracket_close` should have an upper camel case name
[INFO] [stderr]   --> src/token.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         Bracket_close,
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `BracketClose`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `implies` should have an upper camel case name
[INFO] [stderr]   --> src/token.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |         implies,
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Implies`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `if_and_only_if` should have an upper camel case name
[INFO] [stderr]   --> src/token.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         if_and_only_if
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `IfAndOnlyIf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> src/main.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::{self, Read, Write};
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:54:58
[INFO] [stderr]    |
[INFO] [stderr] 54 |             Err(e) => panic!("Could not read stdin: {}", Error::description(&e)),
[INFO] [stderr]    |                                                          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/parser.rs:29:72
[INFO] [stderr]    |
[INFO] [stderr] 29 |         Err(e) => panic!("Could not open {}: {}", real_path.display(), Error::description(&e)),
[INFO] [stderr]    |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/parser.rs:35:72
[INFO] [stderr]    |
[INFO] [stderr] 35 |         Err(e) => panic!("Could not read {}: {}", real_path.display(), Error::description(&e)),
[INFO] [stderr]    |                                                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/tests/parser.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let file = parser::get_file("src/tests/in/404".to_string());
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rules`
[INFO] [stderr]   --> src/tests/parser.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut rules: Vec<Rule> = Vec::new();
[INFO] [stderr]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rules`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/parser.rs:124:42
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 Operators::Type::Operand{ref name} => (),
[INFO] [stderr]     |                                          ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/parser.rs:135:42
[INFO] [stderr]     |
[INFO] [stderr] 135 |                 Operators::Type::Operand{ref name} => (),
[INFO] [stderr]     |                                          ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/parser.rs:147:46
[INFO] [stderr]     |
[INFO] [stderr] 147 |                     Operators::Type::Operand{ref name} => (),
[INFO] [stderr]     |                                              ^^^^^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/tests/parser.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut rules: Vec<Rule> = Vec::new();
[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: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/expert_system-421fc62af24a5ad5
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test tests::eval::and ... ok
[INFO] [stdout] test tests::eval::nand ... ok
[INFO] [stdout] test tests::eval::negate ... ok
[INFO] [stdout] test tests::eval::nor ... ok
[INFO] [stdout] test tests::eval::or ... ok
[INFO] [stdout] test tests::eval::xor ... ok
[INFO] [stdout] test tests::parser::facts_empty ... ok
[INFO] [stdout] test tests::parser::to_rule ... ok
[INFO] [stdout] test tests::rules::query ... ok
[INFO] [stdout] test tests::parser::query ... ok
[INFO] [stdout] test tests::parser::query_empty ... ok
[INFO] [stdout] test tests::parser::rule ... ok
[INFO] [stdout] test tests::parser::get_file ... ok
[INFO] [stdout] test tests::parser::facts ... ok
[INFO] [stdout] test tests::eval::xnor ... ok
[INFO] [stdout] test tests::eval::brackets ... ok
[INFO] [stdout] test tests::parser::facts_syntax ... ok
[INFO] [stdout] test tests::parser::query_syntax ... ok
[INFO] [stdout] test tests::parser::get_file_error ... ok
[INFO] [stdout] test tests::rules::query_inconsistent ... ok
[INFO] [stdout] test tests::parser::to_rule_no_operand ... ok
[INFO] [stdout] test tests::parser::to_rule_no_no_right_side ... ok
[INFO] [stdout] test tests::eval::variable ... FAILED
[INFO] [stdout] test tests::rules::query_infinite_recursion ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::eval::variable stdout ----
[INFO] [stdout] thread 'tests::eval::variable' panicked at 'Aborting: recuring too deeply', src/rule.rs:16:13
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55c9c67e1cc0 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x55c9c67e1cc0 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55c9c67e1cc0 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x55c9c67e1cc0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x55c9c680405c - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stdout]    5:     0x55c9c678c776 - std::io::Write::write_fmt::h68b2e5fe4c78e61a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stdout]    6:     0x55c9c67dc49d - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::he9ebec865e28165c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/impls.rs:179
[INFO] [stdout]    7:     0x55c9c67e41dd - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    8:     0x55c9c67e41dd - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    9:     0x55c9c67e41dd - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stdout]   10:     0x55c9c67e3e32 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:224
[INFO] [stdout]   11:     0x55c9c67e48c1 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stdout]   12:     0x55c9c6772dd8 - std::panicking::begin_panic::{{closure}}::hc78a5a94ec75d700
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:506
[INFO] [stdout]   13:     0x55c9c6777078 - std::sys_common::backtrace::__rust_end_short_backtrace::h37748d8f76bc703a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   14:     0x55c9c6772d03 - std::panicking::begin_panic::hd11abbe2589f494e
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:505
[INFO] [stdout]   15:     0x55c9c6784997 - expert_system::rule::query::ha2485486c9c90486
[INFO] [stdout]                                at /opt/rustwide/workdir/src/rule.rs:16
[INFO] [stdout]   16:     0x55c9c676e52e - expert_system::tests::eval::variable::h3061837e5e0d2839
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tests/eval.rs:351
[INFO] [stdout]   17:     0x55c9c676e3ba - expert_system::tests::eval::variable::{{closure}}::h96c663aaad92256c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tests/eval.rs:345
[INFO] [stdout]   18:     0x55c9c67865ae - core::ops::function::FnOnce::call_once::h92a55b1b98c75d0a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   19:     0x55c9c67b3563 - core::ops::function::FnOnce::call_once::hcd3fa2f0696c1015
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   20:     0x55c9c67b3563 - test::__rust_begin_short_backtrace::h113f97c5e5ab7d4a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:516
[INFO] [stdout]   21:     0x55c9c67b1a68 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h01fd09163cae2442
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   22:     0x55c9c67b1a68 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0da6b685ae74a04a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stdout]   23:     0x55c9c67b1a68 - std::panicking::try::do_call::h564a32f132f2c264
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stdout]   24:     0x55c9c67b1a68 - std::panicking::try::h477cfd4b06a2e64a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stdout]   25:     0x55c9c67b1a68 - std::panic::catch_unwind::hdb5abc6d008c399d
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stdout]   26:     0x55c9c67b1a68 - test::run_test_in_process::he8ff7dec91b275be
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:543
[INFO] [stdout]   27:     0x55c9c67b1a68 - test::run_test::run_test_inner::{{closure}}::hfd9f49e4a4ff9162
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:449
[INFO] [stdout]   28:     0x55c9c678baf6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hee6d60d5bb466aff
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stdout]   29:     0x55c9c6790c65 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h988cecdf9ebbaf00
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:464
[INFO] [stdout]   30:     0x55c9c6790c65 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330cf727ec126982
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stdout]   31:     0x55c9c6790c65 - std::panicking::try::do_call::h6cd25078f4a5ea13
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stdout]   32:     0x55c9c6790c65 - std::panicking::try::h84b1d49961301705
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stdout]   33:     0x55c9c6790c65 - std::panic::catch_unwind::h6145324593b3654b
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stdout]   34:     0x55c9c6790c65 - std::thread::Builder::spawn_unchecked::{{closure}}::ha41e72e8024f9192
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:463
[INFO] [stdout]   35:     0x55c9c6790c65 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hfb5034cf1f1be223
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   36:     0x55c9c67ea8ea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   37:     0x55c9c67ea8ea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   38:     0x55c9c67ea8ea - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stdout]   39:     0x7f036abc2609 - start_thread
[INFO] [stdout]   40:     0x7f036ae4d103 - clone
[INFO] [stdout]   41:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::eval::variable
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 23 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--bin expert_system'
[INFO] running `Command { std: "docker" "inspect" "fcd32ca1fcd310c0453f8ec8194739c48641690ccf31250adc06994566a5df12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcd32ca1fcd310c0453f8ec8194739c48641690ccf31250adc06994566a5df12", kill_on_drop: false }`
[INFO] [stdout] fcd32ca1fcd310c0453f8ec8194739c48641690ccf31250adc06994566a5df12
