[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 try#ddc023471205c186b40f4bf8ffb598008dbf4885 for pr-87041-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yichangcs/Ruscheme on toolchain ddc023471205c186b40f4bf8ffb598008dbf4885
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddc023471205c186b40f4bf8ffb598008dbf4885" "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-11/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" "+ddc023471205c186b40f4bf8ffb598008dbf4885" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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" "+ddc023471205c186b40f4bf8ffb598008dbf4885" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b10e0d044c5101dca07e7b7dcabb46b557268df79b244efb439a9d6c6453a201
[INFO] running `Command { std: "docker" "start" "-a" "b10e0d044c5101dca07e7b7dcabb46b557268df79b244efb439a9d6c6453a201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b10e0d044c5101dca07e7b7dcabb46b557268df79b244efb439a9d6c6453a201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b10e0d044c5101dca07e7b7dcabb46b557268df79b244efb439a9d6c6453a201", kill_on_drop: false }`
[INFO] [stdout] b10e0d044c5101dca07e7b7dcabb46b557268df79b244efb439a9d6c6453a201
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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" "+ddc023471205c186b40f4bf8ffb598008dbf4885" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 771b09221c71a51cb96b1cf92d365ecdf8c1964f288a3af5ce1042b0d954f406
[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" "771b09221c71a51cb96b1cf92d365ecdf8c1964f288a3af5ce1042b0d954f406", 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 19.19s
[INFO] running `Command { std: "docker" "inspect" "771b09221c71a51cb96b1cf92d365ecdf8c1964f288a3af5ce1042b0d954f406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "771b09221c71a51cb96b1cf92d365ecdf8c1964f288a3af5ce1042b0d954f406", kill_on_drop: false }`
[INFO] [stdout] 771b09221c71a51cb96b1cf92d365ecdf8c1964f288a3af5ce1042b0d954f406
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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" "+ddc023471205c186b40f4bf8ffb598008dbf4885" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c041e751ea76a75eb5b538ce02547ba09651c1306a543f42d0ee19547628d8c
[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" "4c041e751ea76a75eb5b538ce02547ba09651c1306a543f42d0ee19547628d8c", 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 2.93s
[INFO] running `Command { std: "docker" "inspect" "4c041e751ea76a75eb5b538ce02547ba09651c1306a543f42d0ee19547628d8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c041e751ea76a75eb5b538ce02547ba09651c1306a543f42d0ee19547628d8c", kill_on_drop: false }`
[INFO] [stdout] 4c041e751ea76a75eb5b538ce02547ba09651c1306a543f42d0ee19547628d8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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" "+ddc023471205c186b40f4bf8ffb598008dbf4885" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a7895d7fa81b0573644676531e203d17b0ce1b7e51cf2e7b1275200efdacd3d6
[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" "a7895d7fa81b0573644676531e203d17b0ce1b7e51cf2e7b1275200efdacd3d6", kill_on_drop: false }`
[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 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ruscheme-5e4e73478d020a3c)
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test core_of_interpreter::test::test_eval_assignment ... ok
[INFO] [stdout] test core_of_interpreter::test::test_eval_single_variable ... ok
[INFO] [stdout] test environment::test::test_frame_values ... ok
[INFO] [stdout] test core_of_interpreter::test::test_eval_self_evaluating_exp ... ok
[INFO] [stdout] test core_of_interpreter::test::test_eval_definition_compoud_procedure ... ok
[INFO] [stdout] test environment::test::test_set_variable_value ... ok
[INFO] [stdout] test environment::test::test_define_variable ... ok
[INFO] [stdout] test environment::test::test_lookup_variable_value ... ok
[INFO] [stdout] test environment::test::test_make_frame ... ok
[INFO] [stdout] test environment::test::test_frame_variables ... ok
[INFO] [stdout] test parser::tests::test_build_syntax_tree ... ok
[INFO] [stdout] test core_of_interpreter::test::test_eval_definition_single_variable ... ok
[INFO] [stdout] test core_of_interpreter::test::test_eval_primitive_procedure ... ok
[INFO] [stdout] test parser::tests::test_read_scheme_programs ... ok
[INFO] [stdout] test environment::test::test_add_binding_to_frame ... ok
[INFO] [stdout] test represent::tests::test_is_string ... ok
[INFO] [stdout] test represent::tests::test_is_number_combination ... ok
[INFO] [stdout] test represent::tests::test_application ... ok
[INFO] [stdout] test parser::tests::test_tokenize ... ok
[INFO] [stdout] test represent::tests::test_is_quoted ... ok
[INFO] [stdout] test represent::tests::test_is_self_evaluating ... ok
[INFO] [stdout] test represent::tests::test_is_pair ... ok
[INFO] [stdout] test represent::tests::test_lambda ... ok
[INFO] [stdout] test represent::tests::test_begin ... ok
[INFO] [stdout] test represent::tests::test_procedure ... ok
[INFO] [stdout] test represent::tests::test_equlity ... ok
[INFO] [stdout] test represent::tests::test_list_operatioins ... ok
[INFO] [stdout] test represent::tests::test_if ... ok
[INFO] [stdout] test represent::tests::test_is_number ... ok
[INFO] [stdout] test parser::tests::test_syntax_checker ... ok
[INFO] [stdout] test represent::tests::test_is_symbol ... ok
[INFO] [stdout] test tool::test::test_append ... ok
[INFO] [stdout] test tool::test::test_list_length ... ok
[INFO] [stdout] test tool::test::test_set_car ... ok
[INFO] [stdout] test tool::test::test_scheme_cons ... ok
[INFO] [stdout] test tool::test::test_set_cdr ... ok
[INFO] [stdout] test represent::tests::test_tagged_list ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a7895d7fa81b0573644676531e203d17b0ce1b7e51cf2e7b1275200efdacd3d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7895d7fa81b0573644676531e203d17b0ce1b7e51cf2e7b1275200efdacd3d6", kill_on_drop: false }`
[INFO] [stdout] a7895d7fa81b0573644676531e203d17b0ce1b7e51cf2e7b1275200efdacd3d6