[INFO] cloning repository https://github.com/Thomas-Langlais/t-lang [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Thomas-Langlais/t-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThomas-Langlais%2Ft-lang", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThomas-Langlais%2Ft-lang'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 11dfb263f1aa02f44648f7657b67f186e172c144 [INFO] testing Thomas-Langlais/t-lang against beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThomas-Langlais%2Ft-lang" "/workspace/builds/worker-25/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Thomas-Langlais/t-lang on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Thomas-Langlais/t-lang [INFO] finished tweaking git repo https://github.com/Thomas-Langlais/t-lang [INFO] tweaked toml for git repo https://github.com/Thomas-Langlais/t-lang written to /workspace/builds/worker-25/source/Cargo.toml [INFO] crate git repo https://github.com/Thomas-Langlais/t-lang already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 07f02c734d0823b188fcadd591b2657885da8bb3dbf0ac62cae98623a11cd987 [INFO] running `Command { std: "docker" "start" "-a" "07f02c734d0823b188fcadd591b2657885da8bb3dbf0ac62cae98623a11cd987", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "07f02c734d0823b188fcadd591b2657885da8bb3dbf0ac62cae98623a11cd987", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "07f02c734d0823b188fcadd591b2657885da8bb3dbf0ac62cae98623a11cd987", kill_on_drop: false }` [INFO] [stdout] 07f02c734d0823b188fcadd591b2657885da8bb3dbf0ac62cae98623a11cd987 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a69e264036e60be3af037d020f3e451dae73a6d52d8b7d68fd2120e5f3271d23 [INFO] running `Command { std: "docker" "start" "-a" "a69e264036e60be3af037d020f3e451dae73a6d52d8b7d68fd2120e5f3271d23", kill_on_drop: false }` [INFO] [stderr] Compiling tlang v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lexer.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | lazy: &'a Fn() -> R, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 - lazy: &'a Fn() -> R, [INFO] [stdout] 6 + lazy: &'a dyn Fn() -> R, [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lexer.rs:129:26 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn new(lazy: &'a Fn() -> R) -> Lexer<'a, R> { [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 129 - pub fn new(lazy: &'a Fn() -> R) -> Lexer<'a, R> { [INFO] [stdout] 129 + pub fn new(lazy: &'a dyn Fn() -> R) -> Lexer<'a, R> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lexer.rs:171:25 [INFO] [stdout] | [INFO] [stdout] 171 | Some(Ok(b)) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lexer.rs:216:25 [INFO] [stdout] | [INFO] [stdout] 216 | Some(Ok(b)) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/lexer.rs:252:5 [INFO] [stdout] | [INFO] [stdout] 252 | value: TokenType, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:250:10 [INFO] [stdout] | [INFO] [stdout] 250 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `source` [INFO] [stdout] --> src/lexer.rs:253:5 [INFO] [stdout] | [INFO] [stdout] 253 | source: Location [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:250:10 [INFO] [stdout] | [INFO] [stdout] 250 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `start` [INFO] [stdout] --> src/lexer.rs:270:5 [INFO] [stdout] | [INFO] [stdout] 270 | start: Position, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Location` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:268:10 [INFO] [stdout] | [INFO] [stdout] 268 | #[derive(Debug, Clone, Copy)] [INFO] [stdout] | ^^^^^ ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `end` [INFO] [stdout] --> src/lexer.rs:271:5 [INFO] [stdout] | [INFO] [stdout] 271 | end: Position [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Location` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:268:10 [INFO] [stdout] | [INFO] [stdout] 268 | #[derive(Debug, Clone, Copy)] [INFO] [stdout] | ^^^^^ ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.08s [INFO] running `Command { std: "docker" "inspect" "a69e264036e60be3af037d020f3e451dae73a6d52d8b7d68fd2120e5f3271d23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a69e264036e60be3af037d020f3e451dae73a6d52d8b7d68fd2120e5f3271d23", kill_on_drop: false }` [INFO] [stdout] a69e264036e60be3af037d020f3e451dae73a6d52d8b7d68fd2120e5f3271d23 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 28f2165e833b5d24848a1b4ef8c568324f5f119235eeaeecce258bbec8ceae5e [INFO] running `Command { std: "docker" "start" "-a" "28f2165e833b5d24848a1b4ef8c568324f5f119235eeaeecce258bbec8ceae5e", kill_on_drop: false }` [INFO] [stderr] Compiling tlang v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lexer.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | lazy: &'a Fn() -> R, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 6 - lazy: &'a Fn() -> R, [INFO] [stdout] 6 + lazy: &'a dyn Fn() -> R, [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lexer.rs:129:26 [INFO] [stdout] | [INFO] [stdout] 129 | pub fn new(lazy: &'a Fn() -> R) -> Lexer<'a, R> { [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 [INFO] [stdout] help: use `dyn` [INFO] [stdout] | [INFO] [stdout] 129 - pub fn new(lazy: &'a Fn() -> R) -> Lexer<'a, R> { [INFO] [stdout] 129 + pub fn new(lazy: &'a dyn Fn() -> R) -> Lexer<'a, R> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lexer.rs:171:25 [INFO] [stdout] | [INFO] [stdout] 171 | Some(Ok(b)) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/lexer.rs:216:25 [INFO] [stdout] | [INFO] [stdout] 216 | Some(Ok(b)) => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `value` [INFO] [stdout] --> src/lexer.rs:252:5 [INFO] [stdout] | [INFO] [stdout] 252 | value: TokenType, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:250:10 [INFO] [stdout] | [INFO] [stdout] 250 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `source` [INFO] [stdout] --> src/lexer.rs:253:5 [INFO] [stdout] | [INFO] [stdout] 253 | source: Location [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:250:10 [INFO] [stdout] | [INFO] [stdout] 250 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `start` [INFO] [stdout] --> src/lexer.rs:270:5 [INFO] [stdout] | [INFO] [stdout] 270 | start: Position, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Location` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:268:10 [INFO] [stdout] | [INFO] [stdout] 268 | #[derive(Debug, Clone, Copy)] [INFO] [stdout] | ^^^^^ ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `end` [INFO] [stdout] --> src/lexer.rs:271:5 [INFO] [stdout] | [INFO] [stdout] 271 | end: Position [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Location` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] --> src/lexer.rs:268:10 [INFO] [stdout] | [INFO] [stdout] 268 | #[derive(Debug, Clone, Copy)] [INFO] [stdout] | ^^^^^ ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.31s [INFO] running `Command { std: "docker" "inspect" "28f2165e833b5d24848a1b4ef8c568324f5f119235eeaeecce258bbec8ceae5e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "28f2165e833b5d24848a1b4ef8c568324f5f119235eeaeecce258bbec8ceae5e", kill_on_drop: false }` [INFO] [stdout] 28f2165e833b5d24848a1b4ef8c568324f5f119235eeaeecce258bbec8ceae5e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f7fc332f4fe7c96dfd53a2c3d1076c313dcc4b2a0a3cfd45cf6bed89fe8b38f0 [INFO] running `Command { std: "docker" "start" "-a" "f7fc332f4fe7c96dfd53a2c3d1076c313dcc4b2a0a3cfd45cf6bed89fe8b38f0", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lexer.rs:6:15 [INFO] [stderr] | [INFO] [stderr] 6 | lazy: &'a Fn() -> R, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 6 - lazy: &'a Fn() -> R, [INFO] [stderr] 6 + lazy: &'a dyn Fn() -> R, [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/lexer.rs:129:26 [INFO] [stderr] | [INFO] [stderr] 129 | pub fn new(lazy: &'a Fn() -> R) -> Lexer<'a, R> { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `dyn` [INFO] [stderr] | [INFO] [stderr] 129 - pub fn new(lazy: &'a Fn() -> R) -> Lexer<'a, R> { [INFO] [stderr] 129 + pub fn new(lazy: &'a dyn Fn() -> R) -> Lexer<'a, R> { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/lexer.rs:171:25 [INFO] [stderr] | [INFO] [stderr] 171 | Some(Ok(b)) => { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/lexer.rs:216:25 [INFO] [stderr] | [INFO] [stderr] 216 | Some(Ok(b)) => { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `value` [INFO] [stderr] --> src/lexer.rs:252:5 [INFO] [stderr] | [INFO] [stderr] 252 | value: TokenType, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/lexer.rs:250:10 [INFO] [stderr] | [INFO] [stderr] 250 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `source` [INFO] [stderr] --> src/lexer.rs:253:5 [INFO] [stderr] | [INFO] [stderr] 253 | source: Location [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Token` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/lexer.rs:250:10 [INFO] [stderr] | [INFO] [stderr] 250 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `start` [INFO] [stderr] --> src/lexer.rs:270:5 [INFO] [stderr] | [INFO] [stderr] 270 | start: Position, [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Location` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stderr] --> src/lexer.rs:268:10 [INFO] [stderr] | [INFO] [stderr] 268 | #[derive(Debug, Clone, Copy)] [INFO] [stderr] | ^^^^^ ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `end` [INFO] [stderr] --> src/lexer.rs:271:5 [INFO] [stderr] | [INFO] [stderr] 271 | end: Position [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Location` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stderr] --> src/lexer.rs:268:10 [INFO] [stderr] | [INFO] [stderr] 268 | #[derive(Debug, Clone, Copy)] [INFO] [stderr] | ^^^^^ ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `tlang` (bin "tlang" test) generated 8 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/tlang-01d60867cd49ee3a) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f7fc332f4fe7c96dfd53a2c3d1076c313dcc4b2a0a3cfd45cf6bed89fe8b38f0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7fc332f4fe7c96dfd53a2c3d1076c313dcc4b2a0a3cfd45cf6bed89fe8b38f0", kill_on_drop: false }` [INFO] [stdout] f7fc332f4fe7c96dfd53a2c3d1076c313dcc4b2a0a3cfd45cf6bed89fe8b38f0