[INFO] cloning repository https://github.com/ccdavis/schemer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ccdavis/schemer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccdavis%2Fschemer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccdavis%2Fschemer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a41eedb95e35e26041e01f0df85c2cc70ef3290a
[INFO] testing ccdavis/schemer against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccdavis%2Fschemer" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ccdavis/schemer on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ccdavis/schemer
[INFO] finished tweaking git repo https://github.com/ccdavis/schemer
[INFO] tweaked toml for git repo https://github.com/ccdavis/schemer written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/ccdavis/schemer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f26fa75871a4405c2b229b6aa1d718d030817e789f54f87e5fee74dddbab457b
[INFO] running `Command { std: "docker" "start" "-a" "f26fa75871a4405c2b229b6aa1d718d030817e789f54f87e5fee74dddbab457b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f26fa75871a4405c2b229b6aa1d718d030817e789f54f87e5fee74dddbab457b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f26fa75871a4405c2b229b6aa1d718d030817e789f54f87e5fee74dddbab457b", kill_on_drop: false }`
[INFO] [stdout] f26fa75871a4405c2b229b6aa1d718d030817e789f54f87e5fee74dddbab457b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b37bd6393a4a42792fd48592112c9bc89ccb2f3dda7e0d0b21bb189d795278b0
[INFO] running `Command { std: "docker" "start" "-a" "b37bd6393a4a42792fd48592112c9bc89ccb2f3dda7e0d0b21bb189d795278b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling rs_lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/interpreter.rs:300:4
[INFO] [stdout]     |
[INFO] [stdout] 300 |             Greater=> Err(not_implemented),
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:226:19
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     Cell::Symbol(number, symbol)=> {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pair`
[INFO] [stdout]   --> src/list.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Link::Data(pair)=>false
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `special_form`
[INFO] [stdout]    --> src/primitives.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 |             Cell::Special(special_form)=> String::from("Special form"),            
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_special_form`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/primitives.rs:110:14
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Cell::Int(value)=>Ok(self.clone()),
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/primitives.rs:111:14
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Cell::Flt(value)=>Ok(self.clone()),
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/primitives.rs:129:15
[INFO] [stdout]     |
[INFO] [stdout] 129 |             Cell::Bool(value) => Ok(self.clone()),
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lookup`
[INFO] [stdout]   --> src/interpreter.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     lookup:Vec<&'a SExpression>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `define`
[INFO] [stdout]   --> src/interpreter.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn define(mut self, name:String, value:SExpression)->Result<i32, String>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Special`
[INFO] [stdout]   --> src/primitives.rs:85:2
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Special(SpecialForm),     // other built-in functions
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lambda`
[INFO] [stdout]   --> src/primitives.rs:86:2
[INFO] [stdout]    |
[INFO] [stdout] 86 |     Lambda(Box<SExpression>,Box<SExpression>), // arguments and body of the lambda
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.48s
[INFO] running `Command { std: "docker" "inspect" "b37bd6393a4a42792fd48592112c9bc89ccb2f3dda7e0d0b21bb189d795278b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b37bd6393a4a42792fd48592112c9bc89ccb2f3dda7e0d0b21bb189d795278b0", kill_on_drop: false }`
[INFO] [stdout] b37bd6393a4a42792fd48592112c9bc89ccb2f3dda7e0d0b21bb189d795278b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 391fe52f79972400ca32b7607d3e5d53747e982e1a20b98d22badbca404adeca
[INFO] running `Command { std: "docker" "start" "-a" "391fe52f79972400ca32b7607d3e5d53747e982e1a20b98d22badbca404adeca", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/interpreter.rs:300:4
[INFO] [stdout]     |
[INFO] [stdout] 300 |             Greater=> Err(not_implemented),
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:226:19
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     Cell::Symbol(number, symbol)=> {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pair`
[INFO] [stdout]   --> src/list.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Link::Data(pair)=>false
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `special_form`
[INFO] [stdout]    --> src/primitives.rs:102:18
[INFO] [stdout]     |
[INFO] [stdout] 102 |             Cell::Special(special_form)=> String::from("Special form"),            
[INFO] [stdout]     |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_special_form`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/primitives.rs:110:14
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Cell::Int(value)=>Ok(self.clone()),
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/primitives.rs:111:14
[INFO] [stdout]     |
[INFO] [stdout] 111 |             Cell::Flt(value)=>Ok(self.clone()),
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/primitives.rs:129:15
[INFO] [stdout]     |
[INFO] [stdout] 129 |             Cell::Bool(value) => Ok(self.clone()),
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lookup`
[INFO] [stdout]   --> src/interpreter.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     lookup:Vec<&'a SExpression>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `define`
[INFO] [stdout]   --> src/interpreter.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn define(mut self, name:String, value:SExpression)->Result<i32, String>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Special`
[INFO] [stdout]   --> src/primitives.rs:85:2
[INFO] [stdout]    |
[INFO] [stdout] 85 |     Special(SpecialForm),     // other built-in functions
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lambda`
[INFO] [stdout]   --> src/primitives.rs:86:2
[INFO] [stdout]    |
[INFO] [stdout] 86 |     Lambda(Box<SExpression>,Box<SExpression>), // arguments and body of the lambda
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "391fe52f79972400ca32b7607d3e5d53747e982e1a20b98d22badbca404adeca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "391fe52f79972400ca32b7607d3e5d53747e982e1a20b98d22badbca404adeca", kill_on_drop: false }`
[INFO] [stdout] 391fe52f79972400ca32b7607d3e5d53747e982e1a20b98d22badbca404adeca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3707ff3e1bccdfd0d0deabd8681e9f0d751d86d82d3525c273906ba5935e309c
[INFO] running `Command { std: "docker" "start" "-a" "3707ff3e1bccdfd0d0deabd8681e9f0d751d86d82d3525c273906ba5935e309c", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/parser.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/interpreter.rs:300:4
[INFO] [stderr]     |
[INFO] [stderr] 300 |             Greater=> Err(not_implemented),
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `number`
[INFO] [stderr]    --> src/interpreter.rs:226:19
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     Cell::Symbol(number, symbol)=> {
[INFO] [stderr]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pair`
[INFO] [stderr]   --> src/list.rs:37:15
[INFO] [stderr]    |
[INFO] [stderr] 37 |             Link::Data(pair)=>false
[INFO] [stderr]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `special_form`
[INFO] [stderr]    --> src/primitives.rs:102:18
[INFO] [stderr]     |
[INFO] [stderr] 102 |             Cell::Special(special_form)=> String::from("Special form"),            
[INFO] [stderr]     |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_special_form`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/primitives.rs:110:14
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Cell::Int(value)=>Ok(self.clone()),
[INFO] [stderr]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/primitives.rs:111:14
[INFO] [stderr]     |
[INFO] [stderr] 111 |             Cell::Flt(value)=>Ok(self.clone()),
[INFO] [stderr]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/primitives.rs:129:15
[INFO] [stderr]     |
[INFO] [stderr] 129 |             Cell::Bool(value) => Ok(self.clone()),
[INFO] [stderr]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `lookup`
[INFO] [stderr]   --> src/interpreter.rs:15:2
[INFO] [stderr]    |
[INFO] [stderr] 15 |     lookup:Vec<&'a SExpression>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define`
[INFO] [stderr]   --> src/interpreter.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn define(mut self, name:String, value:SExpression)->Result<i32, String>{
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Special`
[INFO] [stderr]   --> src/primitives.rs:85:2
[INFO] [stderr]    |
[INFO] [stderr] 85 |     Special(SpecialForm),     // other built-in functions
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Lambda`
[INFO] [stderr]   --> src/primitives.rs:86:2
[INFO] [stderr]    |
[INFO] [stderr] 86 |     Lambda(Box<SExpression>,Box<SExpression>), // arguments and body of the lambda
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rs_lisp` (bin "rs_lisp" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rs_lisp-bf935f5f5bd30fc0)
[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" "3707ff3e1bccdfd0d0deabd8681e9f0d751d86d82d3525c273906ba5935e309c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3707ff3e1bccdfd0d0deabd8681e9f0d751d86d82d3525c273906ba5935e309c", kill_on_drop: false }`
[INFO] [stdout] 3707ff3e1bccdfd0d0deabd8681e9f0d751d86d82d3525c273906ba5935e309c