[INFO] cloning repository https://github.com/mihyaeru21/monkey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mihyaeru21/monkey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmihyaeru21%2Fmonkey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmihyaeru21%2Fmonkey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bde6a0a700c1f24ce9c69c0a34abcb2285964561
[INFO] checking mihyaeru21/monkey against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmihyaeru21%2Fmonkey" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mihyaeru21/monkey on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mihyaeru21/monkey
[INFO] finished tweaking git repo https://github.com/mihyaeru21/monkey
[INFO] tweaked toml for git repo https://github.com/mihyaeru21/monkey written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mihyaeru21/monkey 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e84ee925a2c4ff09280a1555c56313c8b1e7b5ed7e720c62dbce4e0403aa1997
[INFO] running `Command { std: "docker" "start" "-a" "e84ee925a2c4ff09280a1555c56313c8b1e7b5ed7e720c62dbce4e0403aa1997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e84ee925a2c4ff09280a1555c56313c8b1e7b5ed7e720c62dbce4e0403aa1997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e84ee925a2c4ff09280a1555c56313c8b1e7b5ed7e720c62dbce4e0403aa1997", kill_on_drop: false }`
[INFO] [stdout] e84ee925a2c4ff09280a1555c56313c8b1e7b5ed7e720c62dbce4e0403aa1997
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7047f5b664316ec8318c1d5e576eda25cfd24c6aa9afdec55d75e83145216c1e
[INFO] running `Command { std: "docker" "start" "-a" "7047f5b664316ec8318c1d5e576eda25cfd24c6aa9afdec55d75e83145216c1e", kill_on_drop: false }`
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |         'a'...'z' | 'A'...'Z' | '_' => true,
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |         'a'...'z' | 'A'...'Z' | '_' => true,
[INFO] [stdout]     |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 |         '0'...'9' => true,
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |         'a'...'z' | 'A'...'Z' | '_' => true,
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |         'a'...'z' | 'A'...'Z' | '_' => true,
[INFO] [stdout]     |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/lexer.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 |         '0'...'9' => true,
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/parser/tests.rs:7:70
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn test(input: &str, expected_identifier: &str, expected_value: &Any) {
[INFO] [stdout]   |                                                                      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn test(input: &str, expected_identifier: &str, expected_value: &dyn Any) {
[INFO] [stdout]   |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser/tests.rs:25:37
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn test(input: &str, expected: &Any) {
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn test(input: &str, expected: &dyn Any) {
[INFO] [stdout]    |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:101:44
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn test(input: &str, op: &str, right: &Any) {
[INFO] [stdout]     |                                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn test(input: &str, op: &str, right: &dyn Any) {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:128:33
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn test(input: &str, left: &Any, op: &str, right: &Any) {
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn test(input: &str, left: &dyn Any, op: &str, right: &Any) {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:128:56
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn test(input: &str, left: &Any, op: &str, right: &Any) {
[INFO] [stdout]     |                                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn test(input: &str, left: &Any, op: &str, right: &dyn Any) {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:405:90
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn test_let_statement(statement: &Statement, expected_identifier: &str, expected_value: &Any) {
[INFO] [stdout]     |                                                                                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 405 | fn test_let_statement(statement: &Statement, expected_identifier: &str, expected_value: &dyn Any) {
[INFO] [stdout]     |                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:418:60
[INFO] [stdout]     |
[INFO] [stdout] 418 | fn test_return_statement(statement: &Statement, expected: &Any) {
[INFO] [stdout]     |                                                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 418 | fn test_return_statement(statement: &Statement, expected: &dyn Any) {
[INFO] [stdout]     |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:468:76
[INFO] [stdout]     |
[INFO] [stdout] 468 | fn test_prefix_expression(expression: &Expression, operator: &str, right: &Any) {
[INFO] [stdout]     |                                                                            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 468 | fn test_prefix_expression(expression: &Expression, operator: &str, right: &dyn Any) {
[INFO] [stdout]     |                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:477:58
[INFO] [stdout]     |
[INFO] [stdout] 477 | fn test_infix_expression(expression: &Expression, left: &Any, operator: &str, right: &Any) {
[INFO] [stdout]     |                                                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 477 | fn test_infix_expression(expression: &Expression, left: &dyn Any, operator: &str, right: &Any) {
[INFO] [stdout]     |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser/tests.rs:477:87
[INFO] [stdout]     |
[INFO] [stdout] 477 | fn test_infix_expression(expression: &Expression, left: &Any, operator: &str, right: &Any) {
[INFO] [stdout]     |                                                                                       ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 477 | fn test_infix_expression(expression: &Expression, left: &Any, operator: &str, right: &dyn Any) {
[INFO] [stdout]     |                                                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub struct ExpressionStatement {
[INFO] [stdout]     |            ------------------- field in this struct
[INFO] [stdout] 106 |     pub token: Token, // 式の最初のtoken
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ExpressionStatement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub struct BlockStatement {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 118 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BlockStatement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub struct StringLiteral {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 157 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StringLiteral` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct PrefixExpression {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] 169 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `PrefixExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub struct InfixExpression {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 182 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `InfixExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 195 | pub struct Boolean {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 196 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Boolean` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub struct IfExpression {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] 208 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IfExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:246:9
[INFO] [stdout]     |
[INFO] [stdout] 245 | pub struct CallExpression {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 246 |     pub token: Token, // (
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CallExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub struct ExpressionStatement {
[INFO] [stdout]     |            ------------------- field in this struct
[INFO] [stdout] 106 |     pub token: Token, // 式の最初のtoken
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ExpressionStatement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub struct BlockStatement {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 118 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `BlockStatement` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub struct StringLiteral {
[INFO] [stdout]     |            ------------- field in this struct
[INFO] [stdout] 157 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `StringLiteral` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub struct PrefixExpression {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] 169 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `PrefixExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 181 | pub struct InfixExpression {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 182 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `InfixExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:208:9
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub struct IfExpression {
[INFO] [stdout]     |            ------------ field in this struct
[INFO] [stdout] 208 |     pub token: Token,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `IfExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]    --> src/ast.rs:246:9
[INFO] [stdout]     |
[INFO] [stdout] 245 | pub struct CallExpression {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 246 |     pub token: Token, // (
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `CallExpression` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "7047f5b664316ec8318c1d5e576eda25cfd24c6aa9afdec55d75e83145216c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7047f5b664316ec8318c1d5e576eda25cfd24c6aa9afdec55d75e83145216c1e", kill_on_drop: false }`
[INFO] [stdout] 7047f5b664316ec8318c1d5e576eda25cfd24c6aa9afdec55d75e83145216c1e