[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] 19e897f561731d7100dd763edf8b4c2299af7dd6
[INFO] testing Yichangcs/Ruscheme against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yichangcs/Ruscheme on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", 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-10/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" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84592f86765bca9683a7c49145f3f98cdd92ac55d78d33787249e71680365e17
[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" "84592f86765bca9683a7c49145f3f98cdd92ac55d78d33787249e71680365e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84592f86765bca9683a7c49145f3f98cdd92ac55d78d33787249e71680365e17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84592f86765bca9683a7c49145f3f98cdd92ac55d78d33787249e71680365e17", kill_on_drop: false }`
[INFO] [stdout] 84592f86765bca9683a7c49145f3f98cdd92ac55d78d33787249e71680365e17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22f7f30b41275d2ce48c8f501c624271db59bc5f0bf3ea1aa2fa526352d7c269
[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" "22f7f30b41275d2ce48c8f501c624271db59bc5f0bf3ea1aa2fa526352d7c269", 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 variable: `env`
[INFO] [stdout]   --> src/lib.rs:55:23
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/lib.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |         fn is_pair(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:21:24
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn is_variable(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn is_quoted(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/lib.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |         fn is_assignment(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |         fn is_definiton(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |         fn is_symbol(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 |         fn is_lambda(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         fn is_if(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |         fn is_begin(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         fn is_application(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:41:20
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn is_cond(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `Pair` in public interface (error E0446)
[INFO] [stdout]   --> src/lib.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         List(Pair),
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Cons`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         Cons(i32, Box<Pair>),
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         Nil,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FloatNumber`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         FloatNumber(f32),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         Integer(i32),
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `List`
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         List(Pair),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Symbol`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         Symbol(&'static str),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `car`
[INFO] [stdout]   --> src/lib.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn car(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cdr`
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn cdr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cadr`
[INFO] [stdout]   --> src/lib.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn cadr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Env`
[INFO] [stdout]   --> src/lib.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     struct Env {}
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Procedure`
[INFO] [stdout]   --> src/lib.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     struct Procedure {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval`
[INFO] [stdout]   --> src/lib.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply`
[INFO] [stdout]   --> src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_number`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn is_number(exp: &Exp) -> bool { 
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_string`
[INFO] [stdout]   --> src/lib.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn is_string(exp: &Exp) -> bool { 
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_self_evaluating`
[INFO] [stdout]   --> src/lib.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn is_self_evaluating(x: &Exp) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.70s
[INFO] running `Command { std: "docker" "inspect" "22f7f30b41275d2ce48c8f501c624271db59bc5f0bf3ea1aa2fa526352d7c269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22f7f30b41275d2ce48c8f501c624271db59bc5f0bf3ea1aa2fa526352d7c269", kill_on_drop: false }`
[INFO] [stdout] 22f7f30b41275d2ce48c8f501c624271db59bc5f0bf3ea1aa2fa526352d7c269
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c19cf1828ff229a997fe9f2722048495c8268b72046fc03a1c00e3e84c7961f
[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" "1c19cf1828ff229a997fe9f2722048495c8268b72046fc03a1c00e3e84c7961f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/lib.rs:55:23
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/lib.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |         fn is_pair(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:21:24
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn is_variable(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn is_quoted(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/lib.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |         fn is_assignment(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |         fn is_definiton(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |         fn is_symbol(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 |         fn is_lambda(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ruscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         fn is_if(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |         fn is_begin(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         fn is_application(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:41:20
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn is_cond(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `Pair` in public interface (error E0446)
[INFO] [stdout]   --> src/lib.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         List(Pair),
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Cons`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         Cons(i32, Box<Pair>),
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         Nil,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FloatNumber`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         FloatNumber(f32),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]   --> src/lib.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         Integer(i32),
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `List`
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         List(Pair),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Symbol`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         Symbol(&'static str),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `car`
[INFO] [stdout]   --> src/lib.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn car(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cdr`
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn cdr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cadr`
[INFO] [stdout]   --> src/lib.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn cadr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Env`
[INFO] [stdout]   --> src/lib.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     struct Env {}
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Procedure`
[INFO] [stdout]   --> src/lib.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     struct Procedure {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval`
[INFO] [stdout]   --> src/lib.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply`
[INFO] [stdout]   --> src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_number`
[INFO] [stdout]   --> src/lib.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn is_number(exp: &Exp) -> bool { 
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_string`
[INFO] [stdout]   --> src/lib.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn is_string(exp: &Exp) -> bool { 
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_self_evaluating`
[INFO] [stdout]   --> src/lib.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn is_self_evaluating(x: &Exp) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/lib.rs:55:23
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/lib.rs:57:14
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |         fn is_pair(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:21:24
[INFO] [stdout]    |
[INFO] [stdout] 21 |         fn is_variable(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |         fn is_quoted(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]   --> src/lib.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |         fn is_assignment(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |         fn is_definiton(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:31:22
[INFO] [stdout]    |
[INFO] [stdout] 31 |         fn is_symbol(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 |         fn is_lambda(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         fn is_if(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |         fn is_begin(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |         fn is_application(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exp`
[INFO] [stdout]   --> src/lib.rs:41:20
[INFO] [stdout]    |
[INFO] [stdout] 41 |         fn is_cond(exp: &Exp) -> bool { true }
[INFO] [stdout]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `Pair` in public interface (error E0446)
[INFO] [stdout]   --> src/lib.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |         List(Pair),
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Cons`
[INFO] [stdout]  --> src/lib.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |         Cons(i32, Box<Pair>),
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Nil`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         Nil,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `FloatNumber`
[INFO] [stdout]   --> src/lib.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |         FloatNumber(f32),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `List`
[INFO] [stdout]   --> src/lib.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         List(Pair),
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `car`
[INFO] [stdout]   --> src/lib.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn car(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cdr`
[INFO] [stdout]   --> src/lib.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn cdr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cadr`
[INFO] [stdout]   --> src/lib.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn cadr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Env`
[INFO] [stdout]   --> src/lib.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     struct Env {}
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Procedure`
[INFO] [stdout]   --> src/lib.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     struct Procedure {}
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval`
[INFO] [stdout]   --> src/lib.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply`
[INFO] [stdout]   --> src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_self_evaluating`
[INFO] [stdout]   --> src/lib.rs:79:12
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn is_self_evaluating(x: &Exp) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.58s
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1c19cf1828ff229a997fe9f2722048495c8268b72046fc03a1c00e3e84c7961f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c19cf1828ff229a997fe9f2722048495c8268b72046fc03a1c00e3e84c7961f", kill_on_drop: false }`
[INFO] [stdout] 1c19cf1828ff229a997fe9f2722048495c8268b72046fc03a1c00e3e84c7961f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e6db15adb09a59ffa51d0a7ed594bcd8ff3b9d0aeaca04d3b875f286ad6dbb51
[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" "e6db15adb09a59ffa51d0a7ed594bcd8ff3b9d0aeaca04d3b875f286ad6dbb51", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/lib.rs:55:23
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stderr]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/lib.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stderr]    |              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:19:20
[INFO] [stderr]    |
[INFO] [stderr] 19 |         fn is_pair(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:21:24
[INFO] [stderr]    |
[INFO] [stderr] 21 |         fn is_variable(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:23:22
[INFO] [stderr]    |
[INFO] [stderr] 23 |         fn is_quoted(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:25:22
[INFO] [stderr]    |
[INFO] [stderr] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]   --> src/lib.rs:25:33
[INFO] [stderr]    |
[INFO] [stderr] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stderr]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:27:26
[INFO] [stderr]    |
[INFO] [stderr] 27 |         fn is_assignment(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn is_definiton(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |         fn is_symbol(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:33:22
[INFO] [stderr]    |
[INFO] [stderr] 33 |         fn is_lambda(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |         fn is_if(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |         fn is_begin(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:39:27
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn is_application(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:41:20
[INFO] [stderr]    |
[INFO] [stderr] 41 |         fn is_cond(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Pair` in public interface (error E0446)
[INFO] [stderr]   --> src/lib.rs:12:14
[INFO] [stderr]    |
[INFO] [stderr] 12 |         List(Pair),
[INFO] [stderr]    |              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |         Cons(i32, Box<Pair>),
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]  --> src/lib.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         Nil,
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FloatNumber`
[INFO] [stderr]   --> src/lib.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |         FloatNumber(f32),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Integer`
[INFO] [stderr]   --> src/lib.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Integer(i32),
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `List`
[INFO] [stderr]   --> src/lib.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         List(Pair),
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Symbol`
[INFO] [stderr]   --> src/lib.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         Symbol(&'static str),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `car`
[INFO] [stderr]   --> src/lib.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn car(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cdr`
[INFO] [stderr]   --> src/lib.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn cdr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cadr`
[INFO] [stderr]   --> src/lib.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn cadr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Env`
[INFO] [stderr]   --> src/lib.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 50 |     struct Env {}
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Procedure`
[INFO] [stderr]   --> src/lib.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     struct Procedure {}
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eval`
[INFO] [stderr]   --> src/lib.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `apply`
[INFO] [stderr]   --> src/lib.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_number`
[INFO] [stderr]   --> src/lib.rs:64:12
[INFO] [stderr]    |
[INFO] [stderr] 64 |     pub fn is_number(exp: &Exp) -> bool { 
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_string`
[INFO] [stderr]   --> src/lib.rs:72:12
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn is_string(exp: &Exp) -> bool { 
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_self_evaluating`
[INFO] [stderr]   --> src/lib.rs:79:12
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn is_self_evaluating(x: &Exp) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 32 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `env`
[INFO] [stderr]   --> src/lib.rs:55:23
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stderr]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]   --> src/lib.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stderr]    |              ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:19:20
[INFO] [stderr]    |
[INFO] [stderr] 19 |         fn is_pair(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:21:24
[INFO] [stderr]    |
[INFO] [stderr] 21 |         fn is_variable(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                        ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:23:22
[INFO] [stderr]    |
[INFO] [stderr] 23 |         fn is_quoted(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:25:22
[INFO] [stderr]    |
[INFO] [stderr] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tag`
[INFO] [stderr]   --> src/lib.rs:25:33
[INFO] [stderr]    |
[INFO] [stderr] 25 |         fn is_tagged(exp: &Exp, tag: &'static str) -> bool { true }
[INFO] [stderr]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:27:26
[INFO] [stderr]    |
[INFO] [stderr] 27 |         fn is_assignment(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |         fn is_definiton(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:31:22
[INFO] [stderr]    |
[INFO] [stderr] 31 |         fn is_symbol(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:33:22
[INFO] [stderr]    |
[INFO] [stderr] 33 |         fn is_lambda(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:35:18
[INFO] [stderr]    |
[INFO] [stderr] 35 |         fn is_if(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |         fn is_begin(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                     ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:39:27
[INFO] [stderr]    |
[INFO] [stderr] 39 |         fn is_application(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                           ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp`
[INFO] [stderr]   --> src/lib.rs:41:20
[INFO] [stderr]    |
[INFO] [stderr] 41 |         fn is_cond(exp: &Exp) -> bool { true }
[INFO] [stderr]    |                    ^^^ help: if this is intentional, prefix it with an underscore: `_exp`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Pair` in public interface (error E0446)
[INFO] [stderr]   --> src/lib.rs:12:14
[INFO] [stderr]    |
[INFO] [stderr] 12 |         List(Pair),
[INFO] [stderr]    |              ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cons`
[INFO] [stderr]  --> src/lib.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |         Cons(i32, Box<Pair>),
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nil`
[INFO] [stderr]  --> src/lib.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |         Nil,
[INFO] [stderr]   |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FloatNumber`
[INFO] [stderr]   --> src/lib.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |         FloatNumber(f32),
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `List`
[INFO] [stderr]   --> src/lib.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |         List(Pair),
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `car`
[INFO] [stderr]   --> src/lib.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn car(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cdr`
[INFO] [stderr]   --> src/lib.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn cdr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cadr`
[INFO] [stderr]   --> src/lib.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn cadr(exp: &Exp) -> Option<&Exp> {Some(exp)}
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Env`
[INFO] [stderr]   --> src/lib.rs:50:12
[INFO] [stderr]    |
[INFO] [stderr] 50 |     struct Env {}
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Procedure`
[INFO] [stderr]   --> src/lib.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     struct Procedure {}
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eval`
[INFO] [stderr]   --> src/lib.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn eval(exp: Exp, env: Env) -> Result<Exp, &'static str> {Ok(exp)}
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `apply`
[INFO] [stderr]   --> src/lib.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn apply(p: Procedure, args: Exp) -> Result<Exp, &'static str> {Ok(args)}
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_self_evaluating`
[INFO] [stderr]   --> src/lib.rs:79:12
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn is_self_evaluating(x: &Exp) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 28 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ruscheme-5be6fe143425d78c
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests ruscheme
[INFO] [stdout] test tests::test_is_string ... ok
[INFO] [stdout] test tests::test_is_number ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e6db15adb09a59ffa51d0a7ed594bcd8ff3b9d0aeaca04d3b875f286ad6dbb51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6db15adb09a59ffa51d0a7ed594bcd8ff3b9d0aeaca04d3b875f286ad6dbb51", kill_on_drop: false }`
[INFO] [stdout] e6db15adb09a59ffa51d0a7ed594bcd8ff3b9d0aeaca04d3b875f286ad6dbb51