[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] 239bd879a26382a290c58063c9ea1926766f4ae5
[INFO] checking ccdavis/schemer against try#ed606620234c6b50f2414162c4bbabd5f4a925f3 for pr-147995
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccdavis%2Fschemer" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[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-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ccdavis/schemer on toolchain ed606620234c6b50f2414162c4bbabd5f4a925f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ccdavis/schemer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking ccdavis/schemer against try#ed606620234c6b50f2414162c4bbabd5f4a925f3 for pr-147995
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fccdavis%2Fschemer" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[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-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ccdavis/schemer on toolchain ed606620234c6b50f2414162c4bbabd5f4a925f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ccdavis/schemer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strum v0.21.0
[INFO] [stderr]   Downloaded fd-lock v2.0.0
[INFO] [stderr]   Downloaded strum_macros v0.21.1
[INFO] [stderr]   Downloaded rustyline v8.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23ab16b642ff9da67cd4332da1eb9e1a9ebafc1c4938775813e23dea74c9f41f
[INFO] running `Command { std: "docker" "start" "-a" "23ab16b642ff9da67cd4332da1eb9e1a9ebafc1c4938775813e23dea74c9f41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23ab16b642ff9da67cd4332da1eb9e1a9ebafc1c4938775813e23dea74c9f41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23ab16b642ff9da67cd4332da1eb9e1a9ebafc1c4938775813e23dea74c9f41f", kill_on_drop: false }`
[INFO] [stdout] 23ab16b642ff9da67cd4332da1eb9e1a9ebafc1c4938775813e23dea74c9f41f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ed606620234c6b50f2414162c4bbabd5f4a925f3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6547eea9cc5408c24e3af8cbbd14b5407a9d70bdd8add1d3cd7fd95f972b2719
[INFO] running `Command { std: "docker" "start" "-a" "6547eea9cc5408c24e3af8cbbd14b5407a9d70bdd8add1d3cd7fd95f972b2719", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking strum v0.21.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking fd-lock v2.0.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]     Checking rustyline v8.2.0
[INFO] [stderr]     Checking rs_lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/interpreter.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::{Context, Result};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/interpreter.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Context`
[INFO] [stdout]  --> src/interpreter.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | use anyhow::{Context, Result};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/interpreter.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:352:30
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:352:30
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:456:38
[INFO] [stdout]     |
[INFO] [stdout] 456 |                         Cell::Symbol(number, name) => {
[INFO] [stdout]     |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `def_id`
[INFO] [stdout]    --> src/interpreter.rs:458:33
[INFO] [stdout]     |
[INFO] [stdout] 458 | ...                   let def_id = self.define(name, evaluated_value)?;
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:471:46
[INFO] [stdout]     |
[INFO] [stdout] 471 | ...                   Cell::Symbol(number, name) => {
[INFO] [stdout]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `def_id`
[INFO] [stdout]    --> src/interpreter.rs:475:41
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   let def_id = self.define(name, value);
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:456:38
[INFO] [stdout]     |
[INFO] [stdout] 456 |                         Cell::Symbol(number, name) => {
[INFO] [stdout]     |                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `def_id`
[INFO] [stdout]    --> src/interpreter.rs:458:33
[INFO] [stdout]     |
[INFO] [stdout] 458 | ...                   let def_id = self.define(name, evaluated_value)?;
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:471:46
[INFO] [stdout]     |
[INFO] [stdout] 471 | ...                   Cell::Symbol(number, name) => {
[INFO] [stdout]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `def_id`
[INFO] [stdout]    --> src/interpreter.rs:475:41
[INFO] [stdout]     |
[INFO] [stdout] 475 | ...                   let def_id = self.define(name, value);
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_def_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_number`
[INFO] [stdout]    --> src/interpreter.rs:592:14
[INFO] [stdout]     |
[INFO] [stdout] 592 |         let (local_number, name) = match variable_to_change {
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `local_number`
[INFO] [stdout]    --> src/interpreter.rs:592:14
[INFO] [stdout]     |
[INFO] [stdout] 592 |         let (local_number, name) = match variable_to_change {
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_local_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:682:9
[INFO] [stdout]     |
[INFO] [stdout] 682 |         number: i32,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `number`
[INFO] [stdout]    --> src/interpreter.rs:682:9
[INFO] [stdout]     |
[INFO] [stdout] 682 |         number: i32,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_number`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/interpreter.rs:763:13
[INFO] [stdout]     |
[INFO] [stdout] 756 |             Greater => self.eval_greater(list),
[INFO] [stdout]     |             ------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 763 |             Greater => Err(not_implemented),
[INFO] [stdout]     |             ^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/interpreter.rs:763:13
[INFO] [stdout]     |
[INFO] [stdout] 756 |             Greater => self.eval_greater(list),
[INFO] [stdout]     |             ------- matches all the relevant values
[INFO] [stdout] ...
[INFO] [stdout] 763 |             Greater => Err(not_implemented),
[INFO] [stdout]     |             ^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `special_form`
[INFO] [stdout]    --> src/primitives.rs:214:27
[INFO] [stdout]     |
[INFO] [stdout] 214 |             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: `func`
[INFO] [stdout]    --> src/primitives.rs:215:24
[INFO] [stdout]     |
[INFO] [stdout] 215 |             Cell::Core(func) => String::from("core-function"),
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `special_form`
[INFO] [stdout]    --> src/primitives.rs:214:27
[INFO] [stdout]     |
[INFO] [stdout] 214 |             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: `func`
[INFO] [stdout]    --> src/primitives.rs:215:24
[INFO] [stdout]     |
[INFO] [stdout] 215 |             Cell::Core(func) => String::from("core-function"),
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `results`
[INFO] [stdout]    --> src/main.rs:182:13
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let results = interpret_top_level(code, &mut envr);
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `results`
[INFO] [stdout]    --> src/main.rs:182:13
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let results = interpret_top_level(code, &mut envr);
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_results`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `number_list` is never used
[INFO] [stdout]    --> src/main.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn number_list() -> List {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_tests` is never used
[INFO] [stdout]    --> src/main.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn run_tests() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extend_environment` is never used
[INFO] [stdout]   --> src/interpreter.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn extend_environment<'a>(env: &'a mut Environment) -> Environment<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `make_from_cells` is never used
[INFO] [stdout]   --> src/list.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl List {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn make_from_cells(objects: Vec<Cell>) -> List {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interpreter.rs:668:13
[INFO] [stdout]     |
[INFO] [stdout] 668 | /             match *name {
[INFO] [stdout] 669 | |                 SExpression::Cell(Cell::Symbol(_, n)) => self.define(n, value),
[INFO] [stdout] 670 | |                 _ => panic!(
[INFO] [stdout] 671 | |                     "A parameter name must be a symbol but you used {}",
[INFO] [stdout] 672 | |                     &*name.print()
[INFO] [stdout] 673 | |                 ),
[INFO] [stdout] 674 | |             };
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 668 |             let _ = match *name {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `number_list` is never used
[INFO] [stdout]    --> src/main.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn number_list() -> List {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_tests` is never used
[INFO] [stdout]    --> src/main.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn run_tests() {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `extend_environment` is never used
[INFO] [stdout]   --> src/interpreter.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn extend_environment<'a>(env: &'a mut Environment) -> Environment<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `make_from_cells` is never used
[INFO] [stdout]   --> src/list.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl List {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn make_from_cells(objects: Vec<Cell>) -> List {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/interpreter.rs:668:13
[INFO] [stdout]     |
[INFO] [stdout] 668 | /             match *name {
[INFO] [stdout] 669 | |                 SExpression::Cell(Cell::Symbol(_, n)) => self.define(n, value),
[INFO] [stdout] 670 | |                 _ => panic!(
[INFO] [stdout] 671 | |                     "A parameter name must be a symbol but you used {}",
[INFO] [stdout] 672 | |                     &*name.print()
[INFO] [stdout] 673 | |                 ),
[INFO] [stdout] 674 | |             };
[INFO] [stdout]     | |_____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 668 |             let _ = match *name {
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.22s
[INFO] running `Command { std: "docker" "inspect" "6547eea9cc5408c24e3af8cbbd14b5407a9d70bdd8add1d3cd7fd95f972b2719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6547eea9cc5408c24e3af8cbbd14b5407a9d70bdd8add1d3cd7fd95f972b2719", kill_on_drop: false }`
[INFO] [stdout] 6547eea9cc5408c24e3af8cbbd14b5407a9d70bdd8add1d3cd7fd95f972b2719
