[INFO] cloning repository https://github.com/HomelikeBrick42/testlang-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HomelikeBrick42/testlang-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomelikeBrick42%2Ftestlang-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomelikeBrick42%2Ftestlang-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6435844cf9ca046c6c98b88cbdaa7d90e8803dd3
[INFO] checking HomelikeBrick42/testlang-rust/6435844cf9ca046c6c98b88cbdaa7d90e8803dd3 against try#88e773be5b0a68392bd25d47edd909e9b2d64a6a for pr-132268
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomelikeBrick42%2Ftestlang-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HomelikeBrick42/testlang-rust on toolchain 88e773be5b0a68392bd25d47edd909e9b2d64a6a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88e773be5b0a68392bd25d47edd909e9b2d64a6a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HomelikeBrick42/testlang-rust
[INFO] finished tweaking git repo https://github.com/HomelikeBrick42/testlang-rust
[INFO] tweaked toml for git repo https://github.com/HomelikeBrick42/testlang-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/HomelikeBrick42/testlang-rust 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" "+88e773be5b0a68392bd25d47edd909e9b2d64a6a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking HomelikeBrick42/testlang-rust/6435844cf9ca046c6c98b88cbdaa7d90e8803dd3 against try#88e773be5b0a68392bd25d47edd909e9b2d64a6a for pr-132268
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomelikeBrick42%2Ftestlang-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HomelikeBrick42/testlang-rust on toolchain 88e773be5b0a68392bd25d47edd909e9b2d64a6a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88e773be5b0a68392bd25d47edd909e9b2d64a6a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HomelikeBrick42/testlang-rust
[INFO] finished tweaking git repo https://github.com/HomelikeBrick42/testlang-rust
[INFO] tweaked toml for git repo https://github.com/HomelikeBrick42/testlang-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/HomelikeBrick42/testlang-rust 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" "+88e773be5b0a68392bd25d47edd909e9b2d64a6a" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+88e773be5b0a68392bd25d47edd909e9b2d64a6a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd1f4413f46e0c8a79b4ce108b4fb35c1f8d52dc7f270f9433ce45817e14cc39
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[INFO] running `Command { std: "docker" "inspect" "cd1f4413f46e0c8a79b4ce108b4fb35c1f8d52dc7f270f9433ce45817e14cc39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd1f4413f46e0c8a79b4ce108b4fb35c1f8d52dc7f270f9433ce45817e14cc39", kill_on_drop: false }`
[INFO] [stdout] cd1f4413f46e0c8a79b4ce108b4fb35c1f8d52dc7f270f9433ce45817e14cc39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+88e773be5b0a68392bd25d47edd909e9b2d64a6a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e36a663a6592e8a9e8f5d519e95321cbc1d384b747179eb8ab272275115b596
[INFO] running `Command { std: "docker" "start" "-a" "3e36a663a6592e8a9e8f5d519e95321cbc1d384b747179eb8ab272275115b596", kill_on_drop: false }`
[INFO] [stderr]     Checking lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `parent_data`, `file_path`, and `source` are never read
[INFO] [stdout]   --> src/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct AstFile {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 16 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 17 |     pub file_path: String,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 18 |     pub source: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstFile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `file_path`, and `source` are never read
[INFO] [stdout]   --> src/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct AstFile {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 16 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 17 |     pub file_path: String,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 18 |     pub source: String,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstFile` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:24:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Expression(Rc<RefCell<AstExpression>>),
[INFO] [stdout]    |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 24 |     Expression(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:24:16
[INFO] [stdout]    |
[INFO] [stdout] 24 |     Expression(Rc<RefCell<AstExpression>>),
[INFO] [stdout]    |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 24 |     Expression(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Scope(Rc<RefCell<AstScope>>),
[INFO] [stdout]    |     ----- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 25 |     Scope(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Scope(Rc<RefCell<AstScope>>),
[INFO] [stdout]    |     ----- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 25 |     Scope(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Declaration(Rc<RefCell<AstDeclaration>>),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 26 |     Declaration(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Declaration(Rc<RefCell<AstDeclaration>>),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 26 |     Declaration(()),
[INFO] [stdout]    |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Assignment(Rc<RefCell<AstAssignment>>),
[INFO] [stdout]    |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 27 |     Assignment(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:27:16
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Assignment(Rc<RefCell<AstAssignment>>),
[INFO] [stdout]    |     ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstStatement` has derived impls for the traits `Debug` and `Clone`, but these are 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] 27 |     Assignment(()),
[INFO] [stdout]    |                ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `name`, `type_`, `value`, and `constant` are never read
[INFO] [stdout]   --> src/ast.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct AstDeclaration {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 38 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 39 |     pub name: Token,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 40 |     pub type_: Rc<RefCell<Option<AstType>>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 41 |     pub value: Rc<RefCell<Option<AstExpression>>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 42 |     pub constant: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstDeclaration` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `name`, `type_`, `value`, and `constant` are never read
[INFO] [stdout]   --> src/ast.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct AstDeclaration {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 38 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 39 |     pub name: Token,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 40 |     pub type_: Rc<RefCell<Option<AstType>>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 41 |     pub value: Rc<RefCell<Option<AstExpression>>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 42 |     pub constant: bool,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstDeclaration` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `left`, `operator`, and `right` are never read
[INFO] [stdout]   --> src/ast.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct AstAssignment {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 47 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 48 |     pub left: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 49 |     pub operator: Token,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 50 |     pub right: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstAssignment` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `left`, `operator`, and `right` are never read
[INFO] [stdout]   --> src/ast.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct AstAssignment {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout] 47 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 48 |     pub left: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 49 |     pub operator: Token,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 50 |     pub right: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstAssignment` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |     Procedure(Rc<RefCell<AstProcedure>>),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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 |     Procedure(()),
[INFO] [stdout]    |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 |     Procedure(Rc<RefCell<AstProcedure>>),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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 |     Procedure(()),
[INFO] [stdout]    |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |     Literal(Rc<RefCell<AstLiteral>>),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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] 57 |     Literal(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Unary(Rc<RefCell<AstUnary>>),
[INFO] [stdout]    |     ----- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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] 58 |     Unary(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |     Literal(Rc<RefCell<AstLiteral>>),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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] 57 |     Literal(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Binary(Rc<RefCell<AstBinary>>),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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] 59 |     Binary(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:58:11
[INFO] [stdout]    |
[INFO] [stdout] 58 |     Unary(Rc<RefCell<AstUnary>>),
[INFO] [stdout]    |     ----- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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] 58 |     Unary(()),
[INFO] [stdout]    |           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     Binary(Rc<RefCell<AstBinary>>),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstExpression` has derived impls for the traits `Debug` and `Clone`, but these are 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] 59 |     Binary(()),
[INFO] [stdout]    |            ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `arguments`, `return_type`, and `scope` are never read
[INFO] [stdout]   --> src/ast.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct AstProcedure {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 64 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 65 |     pub arguments: Vec<Rc<RefCell<AstDeclaration>>>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 66 |     pub return_type: Rc<RefCell<Option<AstType>>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 67 |     pub scope: Rc<RefCell<AstScope>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstProcedure` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `arguments`, `return_type`, and `scope` are never read
[INFO] [stdout]   --> src/ast.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct AstProcedure {
[INFO] [stdout]    |            ------------ fields in this struct
[INFO] [stdout] 64 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 65 |     pub arguments: Vec<Rc<RefCell<AstDeclaration>>>,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 66 |     pub return_type: Rc<RefCell<Option<AstType>>>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 67 |     pub scope: Rc<RefCell<AstScope>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstProcedure` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parent_data` is never read
[INFO] [stdout]   --> src/ast.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub struct AstName {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 72 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstName` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `parent_data` is never read
[INFO] [stdout]   --> src/ast.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub struct AstName {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 72 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstName` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data` and `token` are never read
[INFO] [stdout]   --> src/ast.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct AstLiteral {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 78 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 79 |     pub token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstLiteral` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data` and `token` are never read
[INFO] [stdout]   --> src/ast.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct AstLiteral {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 78 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 79 |     pub token: Token,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstLiteral` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `operator`, and `operand` are never read
[INFO] [stdout]   --> src/ast.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct AstUnary {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 84 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 85 |     pub operator: Token,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 86 |     pub operand: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstUnary` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `operator`, and `operand` are never read
[INFO] [stdout]   --> src/ast.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct AstUnary {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 84 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 85 |     pub operator: Token,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 86 |     pub operand: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstUnary` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `left`, `operator`, and `right` are never read
[INFO] [stdout]   --> src/ast.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct AstBinary {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 91 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 92 |     pub left: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 93 |     pub operator: Token,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 94 |     pub right: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstBinary` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `parent_data`, `left`, `operator`, and `right` are never read
[INFO] [stdout]   --> src/ast.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct AstBinary {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 91 |     pub parent_data: ParentData,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 92 |     pub left: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 93 |     pub operator: Token,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 94 |     pub right: Rc<RefCell<AstExpression>>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstBinary` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:99:10
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Name(Rc<RefCell<AstName>>),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstType` has derived impls for the traits `Debug` and `Clone`, but these are 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] 99 |     Name(()),
[INFO] [stdout]    |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ast.rs:99:10
[INFO] [stdout]    |
[INFO] [stdout] 99 |     Name(Rc<RefCell<AstName>>),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AstType` has derived impls for the traits `Debug` and `Clone`, but these are 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] 99 |     Name(()),
[INFO] [stdout]    |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "3e36a663a6592e8a9e8f5d519e95321cbc1d384b747179eb8ab272275115b596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e36a663a6592e8a9e8f5d519e95321cbc1d384b747179eb8ab272275115b596", kill_on_drop: false }`
[INFO] [stdout] 3e36a663a6592e8a9e8f5d519e95321cbc1d384b747179eb8ab272275115b596