[INFO] updating cached repository https://github.com/Javyre/uLisp
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 154a087a648f8908f78d94232b842211c8a831e7
[INFO] checking Javyre/uLisp against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJavyre%2FuLisp" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Javyre/uLisp on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Javyre/uLisp
[INFO] finished tweaking git repo https://github.com/Javyre/uLisp
[INFO] tweaked toml for git repo https://github.com/Javyre/uLisp written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Javyre/uLisp already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8a540c38d060e287af5027d813649ac9714a3be0e0d3ef4a7c3d4b426b602f5
[INFO] running `"docker" "start" "-a" "d8a540c38d060e287af5027d813649ac9714a3be0e0d3ef4a7c3d4b426b602f5"`
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking env_logger v0.5.6
[INFO] [stderr]     Checking ulisp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vm/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / bitflags! {
[INFO] [stderr] 25 | |     pub struct LoadOpts: u8 {
[INFO] [stderr] 26 | |         const OVERRIDE_VAR_STRINGS = 0b00000001;
[INFO] [stderr] 27 | |         const REUSE_VAR_STRINGS    = 0b00000010;
[INFO] [stderr] 28 | |         const DEFAULTS             = Self::OVERRIDE_VAR_STRINGS.bits;
[INFO] [stderr] 29 | |     }
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vm/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / bitflags! {
[INFO] [stderr] 25 | |     pub struct LoadOpts: u8 {
[INFO] [stderr] 26 | |         const OVERRIDE_VAR_STRINGS = 0b00000001;
[INFO] [stderr] 27 | |         const REUSE_VAR_STRINGS    = 0b00000010;
[INFO] [stderr] 28 | |         const DEFAULTS             = Self::OVERRIDE_VAR_STRINGS.bits;
[INFO] [stderr] 29 | |     }
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vm/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / bitflags! {
[INFO] [stderr] 25 | |     pub struct LoadOpts: u8 {
[INFO] [stderr] 26 | |         const OVERRIDE_VAR_STRINGS = 0b00000001;
[INFO] [stderr] 27 | |         const REUSE_VAR_STRINGS    = 0b00000010;
[INFO] [stderr] 28 | |         const DEFAULTS             = Self::OVERRIDE_VAR_STRINGS.bits;
[INFO] [stderr] 29 | |     }
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `RefMut`, `Ref`
[INFO] [stderr]  --> src/vm/mem.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Ref,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 5 |     RefMut,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/vm/mod.rs:189:50
[INFO] [stderr]     |
[INFO] [stderr] 189 | ...                   OpCode::CEQ | _ => { (v == n)  },
[INFO] [stderr]     |                                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vm/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / bitflags! {
[INFO] [stderr] 25 | |     pub struct LoadOpts: u8 {
[INFO] [stderr] 26 | |         const OVERRIDE_VAR_STRINGS = 0b00000001;
[INFO] [stderr] 27 | |         const REUSE_VAR_STRINGS    = 0b00000010;
[INFO] [stderr] 28 | |         const DEFAULTS             = Self::OVERRIDE_VAR_STRINGS.bits;
[INFO] [stderr] 29 | |     }
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vm/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / bitflags! {
[INFO] [stderr] 25 | |     pub struct LoadOpts: u8 {
[INFO] [stderr] 26 | |         const OVERRIDE_VAR_STRINGS = 0b00000001;
[INFO] [stderr] 27 | |         const REUSE_VAR_STRINGS    = 0b00000010;
[INFO] [stderr] 28 | |         const DEFAULTS             = Self::OVERRIDE_VAR_STRINGS.bits;
[INFO] [stderr] 29 | |     }
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/vm/mod.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / bitflags! {
[INFO] [stderr] 25 | |     pub struct LoadOpts: u8 {
[INFO] [stderr] 26 | |         const OVERRIDE_VAR_STRINGS = 0b00000001;
[INFO] [stderr] 27 | |         const REUSE_VAR_STRINGS    = 0b00000010;
[INFO] [stderr] 28 | |         const DEFAULTS             = Self::OVERRIDE_VAR_STRINGS.bits;
[INFO] [stderr] 29 | |     }
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `RefMut`, `Ref`
[INFO] [stderr]  --> src/vm/mem.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Ref,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 5 |     RefMut,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/vm/mod.rs:189:50
[INFO] [stderr]     |
[INFO] [stderr] 189 | ...                   OpCode::CEQ | _ => { (v == n)  },
[INFO] [stderr]     |                                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `initial_len`
[INFO] [stderr]    --> src/vm/mod.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |         let initial_len = self.reg_stack.len();
[INFO] [stderr]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm/mod.rs:387:33
[INFO] [stderr]     |
[INFO] [stderr] 387 |         let (mut insts, idents, mut var_strings, consts) = bin.unpack();
[INFO] [stderr]     |                                 ----^^^^^^^^^^^
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `append`
[INFO] [stderr]   --> src/vm/mem.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn append(&mut self, other: Environment) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `define_n`
[INFO] [stderr]   --> src/vm/mem.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn define_n(&mut self, frame: usize, ident: IdentID, val: MemData) -> Result<(), Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_parent`
[INFO] [stderr]    --> src/vm/mem.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     fn get_parent(&self) -> Option<&Rc<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_child`
[INFO] [stderr]    --> src/vm/mem.rs:240:5
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn get_child(&self) -> Option<&Weak<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `define_n`
[INFO] [stderr]    --> src/vm/mem.rs:248:5
[INFO] [stderr]     |
[INFO] [stderr] 248 |     fn define_n(&mut self, n: usize, ident: IdentID, val: MemData) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_parent_n`
[INFO] [stderr]    --> src/vm/mem.rs:286:5
[INFO] [stderr]     |
[INFO] [stderr] 286 |     fn get_parent_n(&self, n: usize) -> Option<Rc<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_child_n`
[INFO] [stderr]    --> src/vm/mem.rs:295:5
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn get_child_n(&self, n: usize) -> Option<Rc<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_frame`
[INFO] [stderr]    --> src/vm/mem.rs:321:5
[INFO] [stderr]     |
[INFO] [stderr] 321 |     fn get_frame(&self) -> &Frame {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_frame_mut`
[INFO] [stderr]    --> src/vm/mem.rs:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     fn get_frame_mut(&mut self) -> &mut Frame {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_pointer`
[INFO] [stderr]    --> src/vm/data.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn create_pointer(data: MemData) -> MemData {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clone_pointer`
[INFO] [stderr]    --> src/vm/data.rs:197:5
[INFO] [stderr]     |
[INFO] [stderr] 197 |     pub fn clone_pointer(&self) -> Option<MemData> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_true`
[INFO] [stderr]    --> src/vm/data.rs:257:5
[INFO] [stderr]     |
[INFO] [stderr] 257 |     pub fn is_true(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eq`
[INFO] [stderr]    --> src/vm/data.rs:293:5
[INFO] [stderr]     |
[INFO] [stderr] 293 |     pub fn eq(&self, other: &Self) -> Result<bool, Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BadScopeIndex`
[INFO] [stderr]   --> src/vm/err.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     BadScopeIndex(usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `consts`
[INFO] [stderr]   --> src/vm/mod.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     consts: Rc<RefCell<Constants>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/vm/mod.rs:424:9
[INFO] [stderr]     |
[INFO] [stderr] 424 |         self.memory.define(id, MemData::Lambda(insts, env));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 23 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `initial_len`
[INFO] [stderr]    --> src/vm/mod.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |         let initial_len = self.reg_stack.len();
[INFO] [stderr]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_initial_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/vm/mod.rs:387:33
[INFO] [stderr]     |
[INFO] [stderr] 387 |         let (mut insts, idents, mut var_strings, consts) = bin.unpack();
[INFO] [stderr]     |                                 ----^^^^^^^^^^^
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `append`
[INFO] [stderr]   --> src/vm/mem.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn append(&mut self, other: Environment) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `define_n`
[INFO] [stderr]   --> src/vm/mem.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn define_n(&mut self, frame: usize, ident: IdentID, val: MemData) -> Result<(), Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_parent`
[INFO] [stderr]    --> src/vm/mem.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     fn get_parent(&self) -> Option<&Rc<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_child`
[INFO] [stderr]    --> src/vm/mem.rs:240:5
[INFO] [stderr]     |
[INFO] [stderr] 240 |     fn get_child(&self) -> Option<&Weak<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `define_n`
[INFO] [stderr]    --> src/vm/mem.rs:248:5
[INFO] [stderr]     |
[INFO] [stderr] 248 |     fn define_n(&mut self, n: usize, ident: IdentID, val: MemData) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_parent_n`
[INFO] [stderr]    --> src/vm/mem.rs:286:5
[INFO] [stderr]     |
[INFO] [stderr] 286 |     fn get_parent_n(&self, n: usize) -> Option<Rc<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_child_n`
[INFO] [stderr]    --> src/vm/mem.rs:295:5
[INFO] [stderr]     |
[INFO] [stderr] 295 |     fn get_child_n(&self, n: usize) -> Option<Rc<RefCell<EnvNode>>> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_frame`
[INFO] [stderr]    --> src/vm/mem.rs:321:5
[INFO] [stderr]     |
[INFO] [stderr] 321 |     fn get_frame(&self) -> &Frame {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_frame_mut`
[INFO] [stderr]    --> src/vm/mem.rs:325:5
[INFO] [stderr]     |
[INFO] [stderr] 325 |     fn get_frame_mut(&mut self) -> &mut Frame {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_pointer`
[INFO] [stderr]    --> src/vm/data.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn create_pointer(data: MemData) -> MemData {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clone_pointer`
[INFO] [stderr]    --> src/vm/data.rs:197:5
[INFO] [stderr]     |
[INFO] [stderr] 197 |     pub fn clone_pointer(&self) -> Option<MemData> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_true`
[INFO] [stderr]    --> src/vm/data.rs:257:5
[INFO] [stderr]     |
[INFO] [stderr] 257 |     pub fn is_true(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BadScopeIndex`
[INFO] [stderr]   --> src/vm/err.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     BadScopeIndex(usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `consts`
[INFO] [stderr]   --> src/vm/mod.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     consts: Rc<RefCell<Constants>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `R`
[INFO] [stderr]    --> src/vm/macros.rs:54:30
[INFO] [stderr]     |
[INFO] [stderr] 54  |           enum ___BinConst { $($ids),* }
[INFO] [stderr]     |                                ^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/tests.rs:174:9
[INFO] [stderr]     |
[INFO] [stderr] 174 | /         program! {
[INFO] [stderr] 175 | |             { foo, bar }
[INFO] [stderr] 176 | |             { 
[INFO] [stderr] 177 | |                 (#a = Str("Heyheyhey".to_string()))
[INFO] [stderr] ...   |
[INFO] [stderr] 210 | |             }
[INFO] [stderr] 211 | |         },
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/vm/mod.rs:424:9
[INFO] [stderr]     |
[INFO] [stderr] 424 |         self.memory.define(id, MemData::Lambda(insts, env));
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 23 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.67s
[INFO] running `"docker" "inspect" "d8a540c38d060e287af5027d813649ac9714a3be0e0d3ef4a7c3d4b426b602f5"`
[INFO] running `"docker" "rm" "-f" "d8a540c38d060e287af5027d813649ac9714a3be0e0d3ef4a7c3d4b426b602f5"`
[INFO] [stdout] d8a540c38d060e287af5027d813649ac9714a3be0e0d3ef4a7c3d4b426b602f5