[INFO] cloning repository https://github.com/l3kn/EulerLisp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/l3kn/EulerLisp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fl3kn%2FEulerLisp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fl3kn%2FEulerLisp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c525a71b2059b06dc1341fcd479daa8f77bdd972
[INFO] testing l3kn/EulerLisp against beta-2025-09-21 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fl3kn%2FEulerLisp" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/l3kn/EulerLisp
[INFO] finished tweaking git repo https://github.com/l3kn/EulerLisp
[INFO] tweaked toml for git repo https://github.com/l3kn/EulerLisp written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/l3kn/EulerLisp on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/l3kn/EulerLisp 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" "+beta-2025-09-21" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e3a31d90e054a6e7f9b167281e3fc69da09d6c6569b969deca5b2680b074cdf
[INFO] running `Command { std: "docker" "start" "-a" "1e3a31d90e054a6e7f9b167281e3fc69da09d6c6569b969deca5b2680b074cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e3a31d90e054a6e7f9b167281e3fc69da09d6c6569b969deca5b2680b074cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e3a31d90e054a6e7f9b167281e3fc69da09d6c6569b969deca5b2680b074cdf", kill_on_drop: false }`
[INFO] [stdout] 1e3a31d90e054a6e7f9b167281e3fc69da09d6c6569b969deca5b2680b074cdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aeb2058f0bf0dda0362f4685051cffe062d0fd10ae316cfddd4cd2fa2872d922
[INFO] running `Command { std: "docker" "start" "-a" "aeb2058f0bf0dda0362f4685051cffe062d0fd10ae316cfddd4cd2fa2872d922", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.39
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling either v1.4.0
[INFO] [stderr]    Compiling serde v1.0.33
[INFO] [stderr]    Compiling encode_unicode v0.1.3
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling colored v1.6.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.25
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling csv v1.0.0-beta.5
[INFO] [stderr]    Compiling lisp-macros v0.1.0 (/opt/rustwide/workdir/lisp-macros)
[INFO] [stdout] warning: unused variable: `function`
[INFO] [stdout]   --> lisp-macros/lib.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let function = function::parse(&fn_item).unwrap();
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_function`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr_ts`
[INFO] [stdout]   --> lisp-macros/lib.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn lisp_fn(attr_ts: TokenStream, fn_ts: TokenStream) -> TokenStream {
[INFO] [stdout]    |                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_attr_ts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> lisp-macros/function.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Normal(i16),
[INFO] [stdout]   |     ------ ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `BuiltinFnType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 5 -     Normal(i16),
[INFO] [stdout] 5 +     Normal(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name`, `fntype`, and `args` are never read
[INFO] [stdout]   --> lisp-macros/function.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Function {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 11 |     pub name: syn::Ident,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 12 |     pub fntype: BuiltinFnType,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 13 |     pub args: Vec<syn::Ident>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Function` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling euler_lisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/lib.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl From<std::option::NoneError> for LispError {
[INFO] [stdout]    |                        ^^^^^^^^^ not found in `std::option`
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `crate::LispError::NoneError`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 40 - impl From<std::option::NoneError> for LispError {
[INFO] [stdout] 40 + impl From<crate::LispError> for LispError {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/lib.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn from(error: std::option::NoneError) -> Self {
[INFO] [stdout]    |                                 ^^^^^^^^^ not found in `std::option`
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `crate::LispError::NoneError`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 41 -     fn from(error: std::option::NoneError) -> Self {
[INFO] [stdout] 41 +     fn from(error: crate::LispError) -> Self {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[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 `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/debugger.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/debugger.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/debugger.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/debugger.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BuiltinRegistry` and `self`
[INFO] [stdout]  --> src/debugger.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::builtin::{self, BuiltinRegistry};
[INFO] [stdout]   |                      ^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Program`
[INFO] [stdout]  --> src/debugger.rs:7:33
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::compiler::{Compiler, Program};
[INFO] [stdout]   |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Instruction` and `LabeledInstruction`
[INFO] [stdout]  --> src/debugger.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::instruction::{Instruction, LabeledInstruction};
[INFO] [stdout]   |                          ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::symbol_table::Symbol`
[INFO] [stdout]   --> src/debugger.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::symbol_table::Symbol;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::vm::Context`
[INFO] [stdout]   --> src/debugger.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::vm::Context;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arity`, `LispFn1`, `LispFn2`, `LispFn3`, and `LispFnN`
[INFO] [stdout]   --> src/debugger.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::{Arity, LispFn1, LispFn2, LispFn3, LispFnN};
[INFO] [stdout]    |             ^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash` and `Hasher`
[INFO] [stdout]  --> src/value.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/builtin/math.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/builtin/math.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 |     (c as isize)
[INFO] [stdout]     |     ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 120 -     (c as isize)
[INFO] [stdout] 120 +     c as isize
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:244:20
[INFO] [stdout]     |
[INFO] [stdout] 244 |                 'A'...'Z' => true,
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:245:20
[INFO] [stdout]     |
[INFO] [stdout] 245 |                 'a'...'z' => true,
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:246:20
[INFO] [stdout]     |
[INFO] [stdout] 246 |                 '0'...'9' => true,
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:498:28
[INFO] [stdout]     |
[INFO] [stdout] 498 |                 first @ 'A'...'Z'
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:499:30
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 | first @ 'a'...'z'
[INFO] [stdout]     |                              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:513:28
[INFO] [stdout]     |
[INFO] [stdout] 513 |                 first @ '0'...'9' => {
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Cell`
[INFO] [stdout]   --> src/lib.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::cell::{Cell, Ref, RefCell};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: feature `try_trait` has been renamed to `try_trait_v2`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/value.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Foreign(Rc<ForeignValue>),
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Foreign(Rc<dyn ForeignValue>),
[INFO] [stdout]    |                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/vm/mod.rs:103:28
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub output: Rc<RefCell<Write>>,
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 103 |     pub output: Rc<RefCell<dyn Write>>,
[INFO] [stdout]     |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/bignum.rs:30:23
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/bitwise.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/comparison.rs:116:23
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]     |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/list.rs:311:23
[INFO] [stdout]     |
[INFO] [stdout] 311 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 311 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]     |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/math.rs:735:23
[INFO] [stdout]     |
[INFO] [stdout] 735 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 735 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]     |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/misc.rs:93:23
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/builtin/string.rs:127:23
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]     |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/types.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builtin/mod.rs:23:23
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn load(reg: &mut BuiltinRegistry) {
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn load(reg: &mut dyn BuiltinRegistry) {
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/vm/mod.rs:110:35
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn new(output: Rc<RefCell<Write>>) -> VM {
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn new(output: Rc<RefCell<dyn Write>>) -> VM {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/compiler/mod.rs:183:30
[INFO] [stdout]     |
[INFO] [stdout] 164 |     pub fn expand_macros(&mut self, datum: Value) -> LispResult<Value> {
[INFO] [stdout]     |     ------------------------------------------------------------------ this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 183 |                 let sr = rule?.clone();
[INFO] [stdout]     |                              ^ use `.ok_or(...)?` to provide an error compatible with `Result<Value, LispError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/compiler/mod.rs:363:38
[INFO] [stdout]     |
[INFO] [stdout] 334 | /     pub fn preprocess_meaning(
[INFO] [stdout] 335 | |         &mut self,
[INFO] [stdout] 336 | |         datum: Value,
[INFO] [stdout] 337 | |         env: AEnvRef,
[INFO] [stdout] 338 | |         tail: bool,
[INFO] [stdout] 339 | |     ) -> LispResult<Vec<LabeledInstruction>> {
[INFO] [stdout]     | |____________________________________________- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 363 |                           let sr = rule?.clone();
[INFO] [stdout]     |                                        ^ use `.ok_or(...)?` to provide an error compatible with `Result<Vec<(Instruction, Option<usize>)>, LispError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/compiler/mod.rs:605:33
[INFO] [stdout]     |
[INFO] [stdout] 589 | /     fn preprocess_meaning_alternative(
[INFO] [stdout] 590 | |         &mut self,
[INFO] [stdout] 591 | |         mut datums: Vec<Value>,
[INFO] [stdout] 592 | |         env: AEnvRef,
[INFO] [stdout] 593 | |         tail: bool,
[INFO] [stdout] 594 | |     ) -> LispResult<Vec<LabeledInstruction>> {
[INFO] [stdout]     | |____________________________________________- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 605 |           let mut last = alt.pop()?;
[INFO] [stdout]     |                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<Vec<(Instruction, Option<usize>)>, LispError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/doc.rs:55:61
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Err(why) => panic!("couldn't spawn pandoc: {}", why.description()),
[INFO] [stdout]    |                                                             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/doc.rs:60:70
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Err(why) => panic!("couldn't write to pandoc stdin: {}", why.description()),
[INFO] [stdout]    |                                                                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/vm/mod.rs:392:51
[INFO] [stdout]     |
[INFO] [stdout] 230 |     fn run_instruction(&mut self, inst: u8) -> LispResult<()> {
[INFO] [stdout]     |     --------------------------------------------------------- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 392 |                 self.env = self.env.parent.clone()?;
[INFO] [stdout]     |                                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<(), LispError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/vm/mod.rs:623:17
[INFO] [stdout]     |
[INFO] [stdout] 622 |                 unimplemented!();
[INFO] [stdout]     |                 ---------------- any code following this expression is unreachable
[INFO] [stdout] 623 |                 let input = self.val.take();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/syntax_rule.rs:139:57
[INFO] [stdout]     |
[INFO] [stdout]  65 | /     pub fn matches(
[INFO] [stdout]  66 | |         &self,
[INFO] [stdout]  67 | |         pattern: &Pattern,
[INFO] [stdout]  68 | |         datum: Value,
[INFO] [stdout]  69 | |         bindings: &mut HashMap<Symbol, Value>,
[INFO] [stdout]  70 | |     ) -> LispResult<bool> {
[INFO] [stdout]     | |_________________________- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 139 |                               coll.push(subbinding.get(&k)?.clone());
[INFO] [stdout]     |                                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<bool, LispError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/syntax_rule.rs:190:62
[INFO] [stdout]     |
[INFO] [stdout] 174 |     pub fn parse(expr: Value, literals: &Vec<Symbol>) -> LispResult<Pattern> {
[INFO] [stdout]     |     ------------------------------------------------------------------------ this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 190 |                         let rest = Pattern::parse(elems.pop()?, literals)?;
[INFO] [stdout]     |                                                              ^ use `.ok_or(...)?` to provide an error compatible with `Result<syntax_rule::Pattern, LispError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Hasher`
[INFO] [stdout]   --> src/lib.rs:31:23
[INFO] [stdout]    |
[INFO] [stdout] 31 | use std::hash::{Hash, Hasher};
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]    --> src/code_formatter.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 356 |         indent: bool,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dec`
[INFO] [stdout]    --> src/code_formatter.rs:399:27
[INFO] [stdout]     |
[INFO] [stdout] 399 |             Element::List(dec, bindings, _, _, _) => {
[INFO] [stdout]     |                           ^^^ help: if this is intentional, prefix it with an underscore: `_dec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]    --> src/code_formatter.rs:392:53
[INFO] [stdout]     |
[INFO] [stdout] 392 |     pub fn print_let(&mut self, els: &Vec<Element>, indent: bool, newline: bool) {
[INFO] [stdout]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]    --> src/code_formatter.rs:441:52
[INFO] [stdout]     |
[INFO] [stdout] 441 |     pub fn print_if(&mut self, els: &Vec<Element>, indent: bool, newline: bool) {
[INFO] [stdout]     |                                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]    --> src/code_formatter.rs:467:52
[INFO] [stdout]     |
[INFO] [stdout] 467 |     pub fn print_fn(&mut self, els: &Vec<Element>, indent: bool, newline: bool) {
[INFO] [stdout]     |                                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]    --> src/code_formatter.rs:493:54
[INFO] [stdout]     |
[INFO] [stdout] 493 |     pub fn print_when(&mut self, els: &Vec<Element>, indent: bool, newline: bool) {
[INFO] [stdout]     |                                                      ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/code_formatter.rs:521:17
[INFO] [stdout]     |
[INFO] [stdout] 521 |             for i in 0..self.indentation {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/code_formatter.rs:527:40
[INFO] [stdout]     |
[INFO] [stdout] 527 |             Element::List(dec, els, _, start, end) => {
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/code_formatter.rs:527:47
[INFO] [stdout]     |
[INFO] [stdout] 527 |             Element::List(dec, els, _, start, end) => {
[INFO] [stdout]     |                                               ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail`
[INFO] [stdout]    --> src/code_formatter.rs:582:43
[INFO] [stdout]     |
[INFO] [stdout] 582 |             Element::DottedList(dec, els, tail, _, start, end) => {
[INFO] [stdout]     |                                           ^^^^ help: if this is intentional, prefix it with an underscore: `_tail`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/code_formatter.rs:582:52
[INFO] [stdout]     |
[INFO] [stdout] 582 |             Element::DottedList(dec, els, tail, _, start, end) => {
[INFO] [stdout]     |                                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/code_formatter.rs:582:59
[INFO] [stdout]     |
[INFO] [stdout] 582 |             Element::DottedList(dec, els, tail, _, start, end) => {
[INFO] [stdout]     |                                                           ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/code_formatter.rs:601:44
[INFO] [stdout]     |
[INFO] [stdout] 601 |             Element::Literal(dec, body, _, start, end) => {
[INFO] [stdout]     |                                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/code_formatter.rs:601:51
[INFO] [stdout]     |
[INFO] [stdout] 601 |             Element::Literal(dec, body, _, start, end) => {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/code_formatter.rs:609:36
[INFO] [stdout]     |
[INFO] [stdout] 609 |             Element::Comment(body, start, end) => {
[INFO] [stdout]     |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/code_formatter.rs:609:43
[INFO] [stdout]     |
[INFO] [stdout] 609 |             Element::Comment(body, start, end) => {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/compiler/error.rs:26:47
[INFO] [stdout]    |
[INFO] [stdout] 26 |             Error::NoMatchingMacroPattern(ref v) => {
[INFO] [stdout]    |                                               ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/compiler/error.rs:30:48
[INFO] [stdout]    |
[INFO] [stdout] 30 |             Error::InvalidFunctionArgument(ref v) => {
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/compiler/error.rs:56:47
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Error::NoMatchingMacroPattern(ref v) => {
[INFO] [stdout]    |                                               ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/compiler/error.rs:60:48
[INFO] [stdout]    |
[INFO] [stdout] 60 |             Error::InvalidFunctionArgument(ref v) => {
[INFO] [stdout]    |                                                ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler/mod.rs:768:17
[INFO] [stdout]     |
[INFO] [stdout] 768 |                 _ => {}
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler/mod.rs:768:17
[INFO] [stdout]     |
[INFO] [stdout] 672 |                   INC | DEC | FST | RST | NOT | IS_ZERO | IS_NIL | CALL_CC | EVAL => {
[INFO] [stdout]     |                   --------------------------------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 694 | /                 BIN_EQ | BIN_EQUAL | BIN_LT | BIN_LTE | BIN_GT | BIN_GTE | NE | CONS | MOD
[INFO] [stdout] 695 | |                 | VECTOR_REF | APPLY => {
[INFO] [stdout]     | |____________________________________- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 721 |                   ADD | SUB | MUL | DIV | IDIV => {
[INFO] [stdout]     |                   ---------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 748 |                   VECTOR_SET => {
[INFO] [stdout]     |                   ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 768 |                   _ => {}
[INFO] [stdout]     |                   ^ ...and 1 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `VAR_ADD`
[INFO] [stdout]    --> src/compiler/mod.rs:767:17
[INFO] [stdout]     |
[INFO] [stdout] 767 |                 VAR_ADD => {}
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]     |
[INFO] [stdout] 767 |                 _VAR_ADD => {}
[INFO] [stdout]     |                 +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named constant `EVAL`
[INFO] [stdout]     |
[INFO] [stdout] 767 -                 VAR_ADD => {}
[INFO] [stdout] 767 +                 symbol_table::EVAL => {}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/value.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             other => {
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]    --> src/builtin/list.rs:201:37
[INFO] [stdout]     |
[INFO] [stdout] 201 | fn join(joiner: Value, list: Value, vm: &VM) -> LispResult<Value> {
[INFO] [stdout]     |                                     ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vm`
[INFO] [stdout]   --> src/builtin/string.rs:51:33
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn string_str(vs: &mut [Value], vm: &VM) -> LispResult<Value> {
[INFO] [stdout]    |                                 ^^ help: if this is intentional, prefix it with an underscore: `_vm`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/lexer.rs:181:40
[INFO] [stdout]     |
[INFO] [stdout] 181 |     pub fn from_string(string: String, source: Option<String>) -> Self {
[INFO] [stdout]     |                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0412, E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `euler_lisp` (lib) due to 10 previous errors; 64 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "aeb2058f0bf0dda0362f4685051cffe062d0fd10ae316cfddd4cd2fa2872d922", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeb2058f0bf0dda0362f4685051cffe062d0fd10ae316cfddd4cd2fa2872d922", kill_on_drop: false }`
[INFO] [stdout] aeb2058f0bf0dda0362f4685051cffe062d0fd10ae316cfddd4cd2fa2872d922
