[INFO] cloning repository https://github.com/HankelBao/rust_pseudo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HankelBao/rust_pseudo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHankelBao%2Frust_pseudo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHankelBao%2Frust_pseudo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b328f9851527ec7656dfb7aa6c0af6e60907deb
[INFO] checking HankelBao/rust_pseudo against try#b152f5575a2ac7126ae0019e4e679abe9399213e for pr-157841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHankelBao%2Frust_pseudo" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/HankelBao/rust_pseudo
[INFO] finished tweaking git repo https://github.com/HankelBao/rust_pseudo
[INFO] tweaked toml for git repo https://github.com/HankelBao/rust_pseudo written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/HankelBao/rust_pseudo on toolchain b152f5575a2ac7126ae0019e4e679abe9399213e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/HankelBao/rust_pseudo 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" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `rust_pseudo` (manifest) generated 1 warning
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_derive v2.0.1
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded pest_generator v2.0.0
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded digest v0.7.6
[INFO] [stderr]   Downloaded block-buffer v0.3.3
[INFO] [stderr]   Downloaded pest_meta v2.0.3
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded generic-array v0.9.0
[INFO] [stderr]   Downloaded byte-tools v0.2.0
[INFO] [stderr]   Downloaded maplit v1.0.1
[INFO] [stderr]   Downloaded sha-1 v0.7.0
[INFO] [stderr]   Downloaded arrayref v0.3.5
[INFO] [stderr]   Downloaded typenum v1.10.0
[INFO] [stderr]   Downloaded ucd-trie v0.1.1
[INFO] [stderr]   Downloaded pest v2.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf
[INFO] running `Command { std: "docker" "start" "5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf" "/opt/rustwide/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf" "/opt/rustwide/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `rust_pseudo` (manifest) generated 1 warning
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]     Checking rust_pseudo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:42:38
[INFO] [stdout]    |
[INFO] [stdout] 42 |     child_blocks: Vec<Rc<RefCell<Box<Block>>>>,
[INFO] [stdout]    |                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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 |     child_blocks: Vec<Rc<RefCell<Box<dyn Block>>>>,
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:43:42
[INFO] [stdout]    |
[INFO] [stdout] 43 |     current_block: Option<Rc<RefCell<Box<Block>>>>,
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 43 |     current_block: Option<Rc<RefCell<Box<dyn Block>>>>,
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:44:41
[INFO] [stdout]    |
[INFO] [stdout] 44 |     parent_block: Option<Rc<RefCell<Box<Block>>>>,
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 44 |     parent_block: Option<Rc<RefCell<Box<dyn Block>>>>,
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:58:58
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<Block>>>, parent_block: Option<Rc<RefCell<Box<Block>>>>) {
[INFO] [stdout]    |                                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<dyn Block>>>, parent_block: Option<Rc<RefCell<Box<Block>>>>) {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:58:104
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<Block>>>, parent_block: Option<Rc<RefCell<Box<Block>>>>) {
[INFO] [stdout]    |                                                                                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<Block>>>, parent_block: Option<Rc<RefCell<Box<dyn Block>>>>) {
[INFO] [stdout]    |                                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:62:45
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 62 |     fn init_block_ptr_from_block(block: Box<dyn Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:62:89
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                                                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<dyn Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:62:118
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                                                                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<dyn Block>>> {
[INFO] [stdout]    |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:85:65
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn mount_child_block(&mut self, child_block: Rc<RefCell<Box<Block>>>) {
[INFO] [stdout]    |                                                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 85 |     fn mount_child_block(&mut self, child_block: Rc<RefCell<Box<dyn Block>>>) {
[INFO] [stdout]    |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:63:40
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let block_ptr : Rc<RefCell<Box<Block>>> = Rc::new(RefCell::new(block));
[INFO] [stdout]    |                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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 |         let block_ptr : Rc<RefCell<Box<dyn Block>>> = Rc::new(RefCell::new(block));
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:73:61
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     let parent_block: Option<Rc<RefCell<Box<Block>>>> = self.current_block.clone();
[INFO] [stdout]    |                                                             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 73 |                     let parent_block: Option<Rc<RefCell<Box<dyn Block>>>> = self.current_block.clone();
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:42:38
[INFO] [stdout]    |
[INFO] [stdout] 42 |     child_blocks: Vec<Rc<RefCell<Box<Block>>>>,
[INFO] [stdout]    |                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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 |     child_blocks: Vec<Rc<RefCell<Box<dyn Block>>>>,
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:43:42
[INFO] [stdout]    |
[INFO] [stdout] 43 |     current_block: Option<Rc<RefCell<Box<Block>>>>,
[INFO] [stdout]    |                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 43 |     current_block: Option<Rc<RefCell<Box<dyn Block>>>>,
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:44:41
[INFO] [stdout]    |
[INFO] [stdout] 44 |     parent_block: Option<Rc<RefCell<Box<Block>>>>,
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 44 |     parent_block: Option<Rc<RefCell<Box<dyn Block>>>>,
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `VARIABLE` and `CONSTANT` are never constructed
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum SymbolType {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 18 |     VARIABLE,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 19 |     CONSTANT,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `INT`, `REAL`, `STRING`, and `OTHER` are never constructed
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum ValueType{
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 23 |     INT,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 24 |     REAL,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 25 |     STRING,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 26 |     OTHER,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/main.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Value(i32, f32, str);
[INFO] [stdout]    |        ----- ^^^  ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `symbol_name`, `symbol_type`, `value_type`, `symbol_value`, and `symbol_scope` are never read
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Symbol{
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 32 |     symbol_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 33 |     symbol_type: SymbolType,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 34 |     value_type: ValueType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 35 |     symbol_value: Box<Value>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 36 |     symbol_scope: Vec<Symbol>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `test_field` and `symbols` are never read
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct BlockStruct {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 40 |     pub test_field: i32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 41 |     symbols: Vec<Symbol>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:58:58
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<Block>>>, parent_block: Option<Rc<RefCell<Box<Block>>>>) {
[INFO] [stdout]    |                                                          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<dyn Block>>>, parent_block: Option<Rc<RefCell<Box<Block>>>>) {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.03s
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:58:104
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<Block>>>, parent_block: Option<Rc<RefCell<Box<Block>>>>) {
[INFO] [stdout]    |                                                                                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 58 |     fn init_env(&mut self, current_block: Rc<RefCell<Box<Block>>>, parent_block: Option<Rc<RefCell<Box<dyn Block>>>>) {
[INFO] [stdout]    |                                                                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:62:45
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 62 |     fn init_block_ptr_from_block(block: Box<dyn Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:62:89
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                                                                         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<dyn Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:62:118
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<Block>>> {
[INFO] [stdout]    |                                                                                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 62 |     fn init_block_ptr_from_block(block: Box<Block>, parent_block: Option<Rc<RefCell<Box<Block>>>>) -> Rc<RefCell<Box<dyn Block>>> {
[INFO] [stdout]    |                                                                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:85:65
[INFO] [stdout]    |
[INFO] [stdout] 85 |     fn mount_child_block(&mut self, child_block: Rc<RefCell<Box<Block>>>) {
[INFO] [stdout]    |                                                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 85 |     fn mount_child_block(&mut self, child_block: Rc<RefCell<Box<dyn Block>>>) {
[INFO] [stdout]    |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:63:40
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let block_ptr : Rc<RefCell<Box<Block>>> = Rc::new(RefCell::new(block));
[INFO] [stdout]    |                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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 |         let block_ptr : Rc<RefCell<Box<dyn Block>>> = Rc::new(RefCell::new(block));
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:73:61
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     let parent_block: Option<Rc<RefCell<Box<Block>>>> = self.current_block.clone();
[INFO] [stdout]    |                                                             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) 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] 73 |                     let parent_block: Option<Rc<RefCell<Box<dyn Block>>>> = self.current_block.clone();
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `VARIABLE` and `CONSTANT` are never constructed
[INFO] [stdout]   --> src/main.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum SymbolType {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 18 |     VARIABLE,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 19 |     CONSTANT,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `INT`, `REAL`, `STRING`, and `OTHER` are never constructed
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum ValueType{
[INFO] [stdout]    |      --------- variants in this enum
[INFO] [stdout] 23 |     INT,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 24 |     REAL,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 25 |     STRING,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 26 |     OTHER,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> src/main.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 | struct Value(i32, f32, str);
[INFO] [stdout]    |        ----- ^^^  ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `symbol_name`, `symbol_type`, `value_type`, `symbol_value`, and `symbol_scope` are never read
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Symbol{
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 32 |     symbol_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 33 |     symbol_type: SymbolType,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 34 |     value_type: ValueType,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 35 |     symbol_value: Box<Value>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 36 |     symbol_scope: Vec<Symbol>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `test_field` and `symbols` are never read
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 39 | struct BlockStruct {
[INFO] [stdout]    |        ----------- fields in this struct
[INFO] [stdout] 40 |     pub test_field: i32,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 41 |     symbols: Vec<Symbol>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf", kill_on_drop: false }`
[INFO] [stdout] 5f90d866edd762ebf71acb9e3795548036ea44ee8a4e89ba007a6b92a5a5ebbf
