[INFO] cloning repository https://github.com/Yichangcs/Ruscheme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yichangcs/Ruscheme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9456af5f880ee3b5ee8600412a55173b489e3e8
[INFO] testing Yichangcs/Ruscheme against master#404c8471aba60c2d837fa728e7c729a0f52d5830 for pr-87041-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yichangcs/Ruscheme on toolchain 404c8471aba60c2d837fa728e7c729a0f52d5830
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yichangcs/Ruscheme
[INFO] finished tweaking git repo https://github.com/Yichangcs/Ruscheme
[INFO] tweaked toml for git repo https://github.com/Yichangcs/Ruscheme written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Yichangcs/Ruscheme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 344cc54db26680188881419305e0ecb605a2f778d09a0ed7c0eba3e9f3bd8bc4
[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" "344cc54db26680188881419305e0ecb605a2f778d09a0ed7c0eba3e9f3bd8bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "344cc54db26680188881419305e0ecb605a2f778d09a0ed7c0eba3e9f3bd8bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "344cc54db26680188881419305e0ecb605a2f778d09a0ed7c0eba3e9f3bd8bc4", kill_on_drop: false }`
[INFO] [stdout] 344cc54db26680188881419305e0ecb605a2f778d09a0ed7c0eba3e9f3bd8bc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0b0ab08d0afe4964aa31139e9a873159cc3b26e2a7bdd950d081c5d33b3c718
[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" "f0b0ab08d0afe4964aa31139e9a873159cc3b26e2a7bdd950d081c5d33b3c718", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ruscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.14s
[INFO] running `Command { std: "docker" "inspect" "f0b0ab08d0afe4964aa31139e9a873159cc3b26e2a7bdd950d081c5d33b3c718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b0ab08d0afe4964aa31139e9a873159cc3b26e2a7bdd950d081c5d33b3c718", kill_on_drop: false }`
[INFO] [stdout] f0b0ab08d0afe4964aa31139e9a873159cc3b26e2a7bdd950d081c5d33b3c718
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d42dfb0bee04c436a64f74512a2ecffbc7b9ea867bf43cdc066fe132ab3d269
[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" "2d42dfb0bee04c436a64f74512a2ecffbc7b9ea867bf43cdc066fe132ab3d269", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ruscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `display::display::pretty_print`
[INFO] [stdout]    --> src/parser.rs:284:17
[INFO] [stdout]     |
[INFO] [stdout] 284 |     use crate::{display::display::pretty_print, scheme_list};
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tokens` is never read
[INFO] [stdout]    --> src/parser.rs:301:17
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut tokens: Vec<String> = vec![];
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ss` is never read
[INFO] [stdout]    --> src/parser.rs:308:17
[INFO] [stdout]     |
[INFO] [stdout] 308 |         let mut ss: Vec<String> = vec![];
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tokens` is never read
[INFO] [stdout]    --> src/parser.rs:324:17
[INFO] [stdout]     |
[INFO] [stdout] 324 |         let mut tokens: Vec<String> = vec![];
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:520:13
[INFO] [stdout]     |
[INFO] [stdout] 520 | /             eval(
[INFO] [stdout] 521 | |                 scheme_list!(
[INFO] [stdout] 522 | |                     Exp::Symbol("define".to_string()),
[INFO] [stdout] 523 | |                     Exp::Symbol("x".to_string()),
[INFO] [stdout] ...   |
[INFO] [stdout] 526 | |                 ENV.clone(),
[INFO] [stdout] 527 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:540:13
[INFO] [stdout]     |
[INFO] [stdout] 540 | /             eval(
[INFO] [stdout] 541 | |                 scheme_list!(
[INFO] [stdout] 542 | |                     Exp::Symbol("define".to_string()),
[INFO] [stdout] 543 | |                     Exp::Symbol("x".to_string()),
[INFO] [stdout] ...   |
[INFO] [stdout] 546 | |                 ENV.clone(),
[INFO] [stdout] 547 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:566:13
[INFO] [stdout]     |
[INFO] [stdout] 566 | /             eval(
[INFO] [stdout] 567 | |                 scheme_list!(
[INFO] [stdout] 568 | |                     Exp::Symbol("define".to_string()),
[INFO] [stdout] 569 | |                     Exp::Symbol("x".to_string()),
[INFO] [stdout] ...   |
[INFO] [stdout] 572 | |                 ENV.clone(),
[INFO] [stdout] 573 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:617:13
[INFO] [stdout]     |
[INFO] [stdout] 617 | /             eval(
[INFO] [stdout] 618 | |                 scheme_list!(
[INFO] [stdout] 619 | |                     Exp::Symbol("define".to_string()),
[INFO] [stdout] 620 | |                     Exp::Symbol("x".to_string()),
[INFO] [stdout] ...   |
[INFO] [stdout] 623 | |                 ENV.clone(),
[INFO] [stdout] 624 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:667:13
[INFO] [stdout]     |
[INFO] [stdout] 667 | /             eval(
[INFO] [stdout] 668 | |                 scheme_list!(
[INFO] [stdout] 669 | |                     Exp::Symbol("define".to_string()),
[INFO] [stdout] 670 | |                     Exp::Symbol("x".to_string()),
[INFO] [stdout] ...   |
[INFO] [stdout] 673 | |                 ENV.clone(),
[INFO] [stdout] 674 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `Command { std: "docker" "inspect" "2d42dfb0bee04c436a64f74512a2ecffbc7b9ea867bf43cdc066fe132ab3d269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d42dfb0bee04c436a64f74512a2ecffbc7b9ea867bf43cdc066fe132ab3d269", kill_on_drop: false }`
[INFO] [stdout] 2d42dfb0bee04c436a64f74512a2ecffbc7b9ea867bf43cdc066fe132ab3d269
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 523d835f7925b59dfaa7bc037a328620db98c3d3a15b6e24a37cfdbff7ceb629
[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" "523d835f7925b59dfaa7bc037a328620db98c3d3a15b6e24a37cfdbff7ceb629", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stderr] warning: unused import: `display::display::pretty_print`
[INFO] [stderr]    --> src/parser.rs:284:17
[INFO] [stderr]     |
[INFO] [stderr] 284 |     use crate::{display::display::pretty_print, scheme_list};
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tokens` is never read
[INFO] [stderr]    --> src/parser.rs:301:17
[INFO] [stderr]     |
[INFO] [stderr] 301 |         let mut tokens: Vec<String> = vec![];
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `ss` is never read
[INFO] [stderr]    --> src/parser.rs:308:17
[INFO] [stderr]     |
[INFO] [stderr] 308 |         let mut ss: Vec<String> = vec![];
[INFO] [stderr]     |                 ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tokens` is never read
[INFO] [stderr]    --> src/parser.rs:324:17
[INFO] [stderr]     |
[INFO] [stderr] 324 |         let mut tokens: Vec<String> = vec![];
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/core_of_interpreter.rs:520:13
[INFO] [stderr]     |
[INFO] [stderr] 520 | /             eval(
[INFO] [stderr] 521 | |                 scheme_list!(
[INFO] [stderr] 522 | |                     Exp::Symbol("define".to_string()),
[INFO] [stderr] 523 | |                     Exp::Symbol("x".to_string()),
[INFO] [stderr] ...   |
[INFO] [stderr] 526 | |                 ENV.clone(),
[INFO] [stderr] 527 | |             );
[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] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/core_of_interpreter.rs:540:13
[INFO] [stderr]     |
[INFO] [stderr] 540 | /             eval(
[INFO] [stderr] 541 | |                 scheme_list!(
[INFO] [stderr] 542 | |                     Exp::Symbol("define".to_string()),
[INFO] [stderr] 543 | |                     Exp::Symbol("x".to_string()),
[INFO] [stderr] ...   |
[INFO] [stderr] 546 | |                 ENV.clone(),
[INFO] [stderr] 547 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/core_of_interpreter.rs:566:13
[INFO] [stderr]     |
[INFO] [stderr] 566 | /             eval(
[INFO] [stderr] 567 | |                 scheme_list!(
[INFO] [stderr] 568 | |                     Exp::Symbol("define".to_string()),
[INFO] [stderr] 569 | |                     Exp::Symbol("x".to_string()),
[INFO] [stderr] ...   |
[INFO] [stderr] 572 | |                 ENV.clone(),
[INFO] [stderr] 573 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/core_of_interpreter.rs:617:13
[INFO] [stderr]     |
[INFO] [stderr] 617 | /             eval(
[INFO] [stderr] 618 | |                 scheme_list!(
[INFO] [stderr] 619 | |                     Exp::Symbol("define".to_string()),
[INFO] [stderr] 620 | |                     Exp::Symbol("x".to_string()),
[INFO] [stderr] ...   |
[INFO] [stderr] 623 | |                 ENV.clone(),
[INFO] [stderr] 624 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/core_of_interpreter.rs:667:13
[INFO] [stderr]     |
[INFO] [stderr] 667 | /             eval(
[INFO] [stderr] 668 | |                 scheme_list!(
[INFO] [stderr] 669 | |                     Exp::Symbol("define".to_string()),
[INFO] [stderr] 670 | |                     Exp::Symbol("x".to_string()),
[INFO] [stderr] ...   |
[INFO] [stderr] 673 | |                 ENV.clone(),
[INFO] [stderr] 674 | |             );
[INFO] [stderr]     | |______________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/parser.rs:288:9
[INFO] [stderr]     |
[INFO] [stderr] 288 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/parser.rs:302:9
[INFO] [stderr]     |
[INFO] [stderr] 302 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/parser.rs:316:9
[INFO] [stderr]     |
[INFO] [stderr] 316 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/parser.rs:325:9
[INFO] [stderr]     |
[INFO] [stderr] 325 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `ruscheme` (bin "ruscheme" test) generated 13 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ruscheme-5e4e73478d020a3c)
[INFO] [stderr] error: test failed, to rerun pass '--bin ruscheme'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/ruscheme-5e4e73478d020a3c` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "523d835f7925b59dfaa7bc037a328620db98c3d3a15b6e24a37cfdbff7ceb629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "523d835f7925b59dfaa7bc037a328620db98c3d3a15b6e24a37cfdbff7ceb629", kill_on_drop: false }`
[INFO] [stdout] 523d835f7925b59dfaa7bc037a328620db98c3d3a15b6e24a37cfdbff7ceb629