[INFO] cloning repository https://github.com/HenrySwanson/rust-lox [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HenrySwanson/rust-lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHenrySwanson%2Frust-lox", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHenrySwanson%2Frust-lox'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 199001389ca09c75709a4e2eca1d73f40b82fe0d [INFO] checking HenrySwanson/rust-lox against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHenrySwanson%2Frust-lox" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/HenrySwanson/rust-lox on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/HenrySwanson/rust-lox [INFO] finished tweaking git repo https://github.com/HenrySwanson/rust-lox [INFO] tweaked toml for git repo https://github.com/HenrySwanson/rust-lox written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/HenrySwanson/rust-lox already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num_enum_derive v0.5.1 [INFO] [stderr] Downloaded num_enum v0.5.1 [INFO] [stderr] Downloaded more-asserts v0.2.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d0566c374d80fc3733ec876882535b913dee1e7ad32739f25a8dcee0dee20c7b [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d0566c374d80fc3733ec876882535b913dee1e7ad32739f25a8dcee0dee20c7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d0566c374d80fc3733ec876882535b913dee1e7ad32739f25a8dcee0dee20c7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0566c374d80fc3733ec876882535b913dee1e7ad32739f25a8dcee0dee20c7b", kill_on_drop: false }` [INFO] [stdout] d0566c374d80fc3733ec876882535b913dee1e7ad32739f25a8dcee0dee20c7b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bb169526cc1848cb879bd2659cd21d30b26d3209be8ddd91076b187c2e8e2f3c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "bb169526cc1848cb879bd2659cd21d30b26d3209be8ddd91076b187c2e8e2f3c", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.115 [INFO] [stderr] Compiling syn v1.0.40 [INFO] [stderr] Checking more-asserts v0.2.1 [INFO] [stderr] Compiling proc-macro2 v1.0.20 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling derivative v2.1.1 [INFO] [stderr] Compiling toml v0.5.6 [INFO] [stderr] Compiling proc-macro-crate v0.1.5 [INFO] [stderr] Compiling num_enum_derive v0.5.1 [INFO] [stderr] Checking num_enum v0.5.1 [INFO] [stderr] Checking rust-lox v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0599]: no method named `unwrap` found for reference `&std::string::String` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:235:47 [INFO] [stdout] | [INFO] [stdout] 235 | assert_eq!("A", heap.get(&weak_ptr_a).unwrap()); [INFO] [stdout] | ^^^^^^ method not found in `&std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `unwrap` found for reference `&std::string::String` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:236:47 [INFO] [stdout] | [INFO] [stdout] 236 | assert_eq!("B", heap.get(&weak_ptr_b).unwrap()); [INFO] [stdout] | ^^^^^^ method not found in `&std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `unwrap` found for reference `&std::string::String` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:240:47 [INFO] [stdout] | [INFO] [stdout] 240 | assert_eq!("A", heap.get(&weak_ptr_a).unwrap()); [INFO] [stdout] | ^^^^^^ method not found in `&std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `unwrap` found for reference `&std::string::String` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:241:47 [INFO] [stdout] | [INFO] [stdout] 241 | assert_eq!("B", heap.get(&weak_ptr_b).unwrap()); [INFO] [stdout] | ^^^^^^ method not found in `&std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bytecode/gc.rs:246:9 [INFO] [stdout] | [INFO] [stdout] 246 | assert_eq!(None, heap.get(&weak_ptr_a)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `Option`, found `&std::string::String` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Option<_>` [INFO] [stdout] found reference `&std::string::String` [INFO] [stdout] = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `unwrap` found for reference `&std::string::String` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:247:47 [INFO] [stdout] | [INFO] [stdout] 247 | assert_eq!("B", heap.get(&weak_ptr_b).unwrap()); [INFO] [stdout] | ^^^^^^ method not found in `&std::string::String` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/bytecode/gc.rs:252:9 [INFO] [stdout] | [INFO] [stdout] 252 | assert_eq!(None, heap.get(&weak_ptr_b)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `Option`, found `&std::string::String` [INFO] [stdout] | [INFO] [stdout] = note: expected enum `Option<_>` [INFO] [stdout] found reference `&std::string::String` [INFO] [stdout] = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:265:39 [INFO] [stdout] | [INFO] [stdout] 265 | assert!(heap.get(&weak_ptr_1).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:266:39 [INFO] [stdout] | [INFO] [stdout] 266 | assert!(heap.get(&weak_ptr_2).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:270:39 [INFO] [stdout] | [INFO] [stdout] 270 | assert!(heap.get(&weak_ptr_1).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:271:39 [INFO] [stdout] | [INFO] [stdout] 271 | assert!(heap.get(&weak_ptr_2).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:277:39 [INFO] [stdout] | [INFO] [stdout] 277 | assert!(heap.get(&weak_ptr_1).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:278:39 [INFO] [stdout] | [INFO] [stdout] 278 | assert!(heap.get(&weak_ptr_2).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_none` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:284:39 [INFO] [stdout] | [INFO] [stdout] 284 | assert!(heap.get(&weak_ptr_1).is_none()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_none` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:285:39 [INFO] [stdout] | [INFO] [stdout] 285 | assert!(heap.get(&weak_ptr_2).is_none()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `get_mut_unchecked` found for struct `gc::GcHeap` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:297:14 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct GcHeap { [INFO] [stdout] | -------------------- method `get_mut_unchecked` not found for this [INFO] [stdout] ... [INFO] [stdout] 297 | heap.get_mut_unchecked(&ptr_3.downgrade()).next = Some(ptr_1.downgrade()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ method not found in `gc::GcHeap` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:303:39 [INFO] [stdout] | [INFO] [stdout] 303 | assert!(heap.get(&weak_ptr_1).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:304:39 [INFO] [stdout] | [INFO] [stdout] 304 | assert!(heap.get(&weak_ptr_2).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:305:39 [INFO] [stdout] | [INFO] [stdout] 305 | assert!(heap.get(&weak_ptr_3).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:310:39 [INFO] [stdout] | [INFO] [stdout] 310 | assert!(heap.get(&weak_ptr_1).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:311:39 [INFO] [stdout] | [INFO] [stdout] 311 | assert!(heap.get(&weak_ptr_2).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:312:39 [INFO] [stdout] | [INFO] [stdout] 312 | assert!(heap.get(&weak_ptr_3).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:319:39 [INFO] [stdout] | [INFO] [stdout] 319 | assert!(heap.get(&weak_ptr_1).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:320:39 [INFO] [stdout] | [INFO] [stdout] 320 | assert!(heap.get(&weak_ptr_2).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_some` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:321:39 [INFO] [stdout] | [INFO] [stdout] 321 | assert!(heap.get(&weak_ptr_3).is_some()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_none` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:328:39 [INFO] [stdout] | [INFO] [stdout] 328 | assert!(heap.get(&weak_ptr_1).is_none()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_none` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:329:39 [INFO] [stdout] | [INFO] [stdout] 329 | assert!(heap.get(&weak_ptr_2).is_none()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `is_none` found for reference `&Foo` in the current scope [INFO] [stdout] --> src/bytecode/gc.rs:330:39 [INFO] [stdout] | [INFO] [stdout] 330 | assert!(heap.get(&weak_ptr_3).is_none()); [INFO] [stdout] | ^^^^^^^ method not found in `&Foo` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/bytecode/vm.rs:248:33 [INFO] [stdout] | [INFO] [stdout] 248 | ... for i in 0..upvalue_count { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `kind` [INFO] [stdout] --> src/bytecode/vm.rs:249:37 [INFO] [stdout] | [INFO] [stdout] 249 | ... let kind = self.frame_mut().read_u8(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_kind` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `idx` [INFO] [stdout] --> src/bytecode/vm.rs:250:37 [INFO] [stdout] | [INFO] [stdout] 250 | ... let idx = self.frame_mut().read_u8(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_idx` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 28 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-lox` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: associated function is never used: `disassemble` [INFO] [stdout] --> src/bytecode/chunk.rs:139:12 [INFO] [stdout] | [INFO] [stdout] 139 | pub fn disassemble(&self, name: &str) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `disassemble_at` [INFO] [stdout] --> src/bytecode/chunk.rs:148:12 [INFO] [stdout] | [INFO] [stdout] 148 | pub fn disassemble_at(&self, offset: usize) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `try_get_mut` [INFO] [stdout] --> src/bytecode/gc.rs:63:12 [INFO] [stdout] | [INFO] [stdout] 63 | pub fn try_get_mut(&mut self, handle: impl AsRef>) -> Option<&mut T> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_mut` [INFO] [stdout] --> src/bytecode/gc.rs:73:12 [INFO] [stdout] | [INFO] [stdout] 73 | pub fn get_mut(&mut self, handle: impl AsRef>) -> &mut T { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `try_upgrade` [INFO] [stdout] --> src/bytecode/gc.rs:77:12 [INFO] [stdout] | [INFO] [stdout] 77 | pub fn try_upgrade(&self, handle: impl AsRef>) -> Option> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `upgrade` [INFO] [stdout] --> src/bytecode/gc.rs:88:12 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn upgrade(&self, handle: impl AsRef>) -> GcStrong { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `collect_garbage` [INFO] [stdout] --> src/bytecode/gc.rs:93:12 [INFO] [stdout] | [INFO] [stdout] 93 | pub fn collect_garbage(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `insert` [INFO] [stdout] --> src/bytecode/string_interning.rs:36:12 [INFO] [stdout] | [INFO] [stdout] 36 | pub fn insert(&mut self, key: K) [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `clean` [INFO] [stdout] --> src/bytecode/string_interning.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 43 | pub fn clean(&mut self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `len` [INFO] [stdout] --> src/bytecode/string_interning.rs:47:12 [INFO] [stdout] | [INFO] [stdout] 47 | pub fn len(&self) -> usize { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "bb169526cc1848cb879bd2659cd21d30b26d3209be8ddd91076b187c2e8e2f3c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bb169526cc1848cb879bd2659cd21d30b26d3209be8ddd91076b187c2e8e2f3c", kill_on_drop: false }` [INFO] [stdout] bb169526cc1848cb879bd2659cd21d30b26d3209be8ddd91076b187c2e8e2f3c