[INFO] cloning repository https://github.com/alex34567/scheme-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alex34567/scheme-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falex34567%2Fscheme-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falex34567%2Fscheme-oxide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c57652784a5bab9693603ec5639b3256fceef0a9
[INFO] checking alex34567/scheme-oxide against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falex34567%2Fscheme-oxide" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/alex34567/scheme-oxide
[INFO] finished tweaking git repo https://github.com/alex34567/scheme-oxide
[INFO] tweaked toml for git repo https://github.com/alex34567/scheme-oxide written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/alex34567/scheme-oxide on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/alex34567/scheme-oxide 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90d3f344a82f7364252b7add835bc4514568a020e6e7ae73bbfaaf1b81c61016
[INFO] running `Command { std: "docker" "start" "-a" "90d3f344a82f7364252b7add835bc4514568a020e6e7ae73bbfaaf1b81c61016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90d3f344a82f7364252b7add835bc4514568a020e6e7ae73bbfaaf1b81c61016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d3f344a82f7364252b7add835bc4514568a020e6e7ae73bbfaaf1b81c61016", kill_on_drop: false }`
[INFO] [stdout] 90d3f344a82f7364252b7add835bc4514568a020e6e7ae73bbfaaf1b81c61016
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f5aa72a7aadb788446bbb58e1efa46f184a5d2bb4c5dcdeb0d3a6f983d197df
[INFO] running `Command { std: "docker" "start" "-a" "5f5aa72a7aadb788446bbb58e1efa46f184a5d2bb4c5dcdeb0d3a6f983d197df", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking scheme-oxide v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::string::StringSetError`
[INFO] [stdout]   --> src/types.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub use self::string::StringSetError;
[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: `self::string::StringSetError`
[INFO] [stdout]   --> src/types.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub use self::string::StringSetError;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `downcast_ref` is never used
[INFO] [stdout]    --> src/gc.rs:185:15
[INFO] [stdout]     |
[INFO] [stdout] 184 | impl GcObjHead {
[INFO] [stdout]     | -------------- method in this implementation
[INFO] [stdout] 185 |     unsafe fn downcast_ref<T>(&self) -> &GcObj<T>
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:55:20
[INFO] [stdout]    |
[INFO] [stdout] 55 |     TokenizerError(TokenizerError),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParserError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 55 -     TokenizerError(TokenizerError),
[INFO] [stdout] 55 +     TokenizerError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/interpreter.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |     EvalError(CompilerError),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 62 -     EvalError(CompilerError),
[INFO] [stdout] 62 +     EvalError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/interpreter.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |     ReadError(ParserError),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 63 -     ReadError(ParserError),
[INFO] [stdout] 63 +     ReadError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `e_type` and `message` are never read
[INFO] [stdout]   --> src/interpreter/compiler/error.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct CompilerError {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 32 |     e_type: CompilerErrorType,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:49:26
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/gc.rs:326:28
[INFO] [stdout]     |
[INFO] [stdout] 326 |     unsafe fn make_root<T>(&self, obj: *const GcObj<T>) -> RootObject<T>
[INFO] [stdout]     |                            ^^^^^                           ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 326 |     unsafe fn make_root<T>(&self, obj: *const GcObj<T>) -> RootObject<'_, T>
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/gc.rs:349:30
[INFO] [stdout]     |
[INFO] [stdout] 349 |     unsafe fn put_on_heap<T>(&self, new_obj: T) -> Result<RootObject<T>, ()>
[INFO] [stdout]     |                              ^^^^^                        ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 349 |     unsafe fn put_on_heap<T>(&self, new_obj: T) -> Result<RootObject<'_, T>, ()>
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Traceable` is never used
[INFO] [stdout]   --> src/gc.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub unsafe trait Traceable: Sized {
[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 `round_to_align` is never used
[INFO] [stdout]   --> src/gc.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn round_to_align(size: usize, align: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `traceable_size` is never used
[INFO] [stdout]   --> src/gc.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn traceable_size<T>(obj: &GcObj<T>) -> usize
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RootEntry` is never used
[INFO] [stdout]   --> src/gc.rs:88:6
[INFO] [stdout]    |
[INFO] [stdout] 88 | enum RootEntry {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `to_option`, `get_free`, and `mut_option` are never used
[INFO] [stdout]    --> src/gc.rs:94:8
[INFO] [stdout]     |
[INFO] [stdout]  93 | impl RootEntry {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout]  94 |     fn to_option(self) -> Option<*const GcObjHead> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn get_free(self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 108 |     fn mut_option(&mut self) -> Option<&mut *const GcObjHead> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RootObject` is never constructed
[INFO] [stdout]    --> src/gc.rs:116:8
[INFO] [stdout]     |
[INFO] [stdout] 116 | struct RootObject<'a, T>
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `to_ptr` and `to_ref` are never used
[INFO] [stdout]    --> src/gc.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | / impl<'a, T> RootObject<'a, T>
[INFO] [stdout] 126 | | where
[INFO] [stdout] 127 | |     T: Traceable,
[INFO] [stdout]     | |_________________- methods in this implementation
[INFO] [stdout] 128 |   {
[INFO] [stdout] 129 |       fn to_ptr(&self) -> *const GcObj<T> {
[INFO] [stdout]     |          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |       unsafe fn to_ref(&self) -> &GcObj<T> {
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GcHeap` is never constructed
[INFO] [stdout]    --> src/gc.rs:165:8
[INFO] [stdout]     |
[INFO] [stdout] 165 | struct GcHeap {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GcVtable` is never constructed
[INFO] [stdout]    --> src/gc.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub struct GcVtable {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GcObjHead` is never constructed
[INFO] [stdout]    --> src/gc.rs:179:12
[INFO] [stdout]     |
[INFO] [stdout] 179 | pub struct GcObjHead {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `downcast_ref` and `downcast_ptr` are never used
[INFO] [stdout]    --> src/gc.rs:185:15
[INFO] [stdout]     |
[INFO] [stdout] 184 | impl GcObjHead {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 185 |     unsafe fn downcast_ref<T>(&self) -> &GcObj<T>
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 193 |     fn downcast_ptr<T>(ptr: *const Self) -> *const GcObj<T>
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GcObj` is never constructed
[INFO] [stdout]    --> src/gc.rs:202:12
[INFO] [stdout]     |
[INFO] [stdout] 202 | pub struct GcObj<T>
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `erase_ptr` is never used
[INFO] [stdout]    --> src/gc.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 210 | / impl<T> GcObj<T>
[INFO] [stdout] 211 | | where
[INFO] [stdout] 212 | |     T: Traceable,
[INFO] [stdout]     | |_________________- associated function in this implementation
[INFO] [stdout] 213 |   {
[INFO] [stdout] 214 |       fn erase_ptr(ptr: *const Self) -> *const GcObjHead {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `free_space`, `collect`, `make_root`, and `put_on_heap` are never used
[INFO] [stdout]    --> src/gc.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 219 | impl GcHeap {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 220 |     fn new(heap_size: usize, root_count: usize) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 253 |     fn free_space(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 257 |     unsafe fn collect(&self) {
[INFO] [stdout]     |               ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 326 |     unsafe fn make_root<T>(&self, obj: *const GcObj<T>) -> RootObject<T>
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 349 |     unsafe fn put_on_heap<T>(&self, new_obj: T) -> Result<RootObject<T>, ()>
[INFO] [stdout]     |               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/parser.rs:55:20
[INFO] [stdout]    |
[INFO] [stdout] 55 |     TokenizerError(TokenizerError),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParserError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 55 -     TokenizerError(TokenizerError),
[INFO] [stdout] 55 +     TokenizerError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/interpreter.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 |     EvalError(CompilerError),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 62 -     EvalError(CompilerError),
[INFO] [stdout] 62 +     EvalError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/interpreter.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |     ReadError(ParserError),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RuntimeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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] 63 -     ReadError(ParserError),
[INFO] [stdout] 63 +     ReadError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `e_type` and `message` are never read
[INFO] [stdout]   --> src/interpreter/compiler/error.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct CompilerError {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 32 |     e_type: CompilerErrorType,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 33 |     message: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:49:26
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(e) => panic!(e.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(e) => panic!("{}", e.to_string()),
[INFO] [stdout]    |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/gc.rs:326:28
[INFO] [stdout]     |
[INFO] [stdout] 326 |     unsafe fn make_root<T>(&self, obj: *const GcObj<T>) -> RootObject<T>
[INFO] [stdout]     |                            ^^^^^                           ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 326 |     unsafe fn make_root<T>(&self, obj: *const GcObj<T>) -> RootObject<'_, T>
[INFO] [stdout]     |                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/gc.rs:349:30
[INFO] [stdout]     |
[INFO] [stdout] 349 |     unsafe fn put_on_heap<T>(&self, new_obj: T) -> Result<RootObject<T>, ()>
[INFO] [stdout]     |                              ^^^^^                        ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 349 |     unsafe fn put_on_heap<T>(&self, new_obj: T) -> Result<RootObject<'_, T>, ()>
[INFO] [stdout]     |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.13s
[INFO] running `Command { std: "docker" "inspect" "5f5aa72a7aadb788446bbb58e1efa46f184a5d2bb4c5dcdeb0d3a6f983d197df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f5aa72a7aadb788446bbb58e1efa46f184a5d2bb4c5dcdeb0d3a6f983d197df", kill_on_drop: false }`
[INFO] [stdout] 5f5aa72a7aadb788446bbb58e1efa46f184a5d2bb4c5dcdeb0d3a6f983d197df
