[INFO] fetching crate scdlang 0.2.1... [INFO] testing scdlang-0.2.1 against beta-2021-09-08 for beta-1.56-1 [INFO] extracting crate scdlang 0.2.1 into /workspace/builds/worker-42/source [INFO] validating manifest of crates.io crate scdlang 0.2.1 on toolchain beta-2021-09-08 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate scdlang 0.2.1 [INFO] finished tweaking crates.io crate scdlang 0.2.1 [INFO] tweaked toml for crates.io crate scdlang 0.2.1 written to /workspace/builds/worker-42/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 43e8b9e6f68e7ec82e306f022863eb95c64531b7a1378b305a5a8b57950676c4 [INFO] running `Command { std: "docker" "start" "-a" "43e8b9e6f68e7ec82e306f022863eb95c64531b7a1378b305a5a8b57950676c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "43e8b9e6f68e7ec82e306f022863eb95c64531b7a1378b305a5a8b57950676c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43e8b9e6f68e7ec82e306f022863eb95c64531b7a1378b305a5a8b57950676c4", kill_on_drop: false }` [INFO] [stdout] 43e8b9e6f68e7ec82e306f022863eb95c64531b7a1378b305a5a8b57950676c4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 92121b9c91c9f8a1962e0512809119e839c9258b630d5e41728629bfdd45d6ca [INFO] running `Command { std: "docker" "start" "-a" "92121b9c91c9f8a1962e0512809119e839c9258b630d5e41728629bfdd45d6ca", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.76 [INFO] [stderr] Compiling ucd-trie v0.1.3 [INFO] [stderr] Compiling maplit v1.0.2 [INFO] [stderr] Compiling pest v2.1.3 [INFO] [stderr] Compiling pest_meta v2.1.3 [INFO] [stderr] Compiling pest_generator v2.1.3 [INFO] [stderr] Compiling pest_derive v2.1.0 [INFO] [stderr] Compiling scdlang v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/semantics/kind.rs:39:30 [INFO] [stdout] | [INFO] [stdout] 39 | fn action(&self) -> Option<&Any/*👈TBD*/> { [INFO] [stdout] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/semantics/kind.rs:70:30 [INFO] [stdout] | [INFO] [stdout] 70 | fn action(&self) -> Option<&Any /*👈TBD*/>; [INFO] [stdout] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 24.28s [INFO] running `Command { std: "docker" "inspect" "92121b9c91c9f8a1962e0512809119e839c9258b630d5e41728629bfdd45d6ca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92121b9c91c9f8a1962e0512809119e839c9258b630d5e41728629bfdd45d6ca", kill_on_drop: false }` [INFO] [stdout] 92121b9c91c9f8a1962e0512809119e839c9258b630d5e41728629bfdd45d6ca [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3818d5a44e9be16d9785a4949acfbc014590a39af9df9d8fc96c41d239062205 [INFO] running `Command { std: "docker" "start" "-a" "3818d5a44e9be16d9785a4949acfbc014590a39af9df9d8fc96c41d239062205", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling scdlang v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/semantics/kind.rs:39:30 [INFO] [stdout] | [INFO] [stdout] 39 | fn action(&self) -> Option<&Any/*👈TBD*/> { [INFO] [stdout] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/semantics/kind.rs:70:30 [INFO] [stdout] | [INFO] [stdout] 70 | fn action(&self) -> Option<&Any /*👈TBD*/>; [INFO] [stdout] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/semantics/kind.rs:39:30 [INFO] [stdout] | [INFO] [stdout] 39 | fn action(&self) -> Option<&Any/*👈TBD*/> { [INFO] [stdout] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/semantics/kind.rs:70:30 [INFO] [stdout] | [INFO] [stdout] 70 | fn action(&self) -> Option<&Any /*👈TBD*/>; [INFO] [stdout] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 35.38s [INFO] running `Command { std: "docker" "inspect" "3818d5a44e9be16d9785a4949acfbc014590a39af9df9d8fc96c41d239062205", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3818d5a44e9be16d9785a4949acfbc014590a39af9df9d8fc96c41d239062205", kill_on_drop: false }` [INFO] [stdout] 3818d5a44e9be16d9785a4949acfbc014590a39af9df9d8fc96c41d239062205 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 8bc343af935ed7afabb239ceced35827d753699fab6bd3e1f0d5bd3d2d91fd94 [INFO] running `Command { std: "docker" "start" "-a" "8bc343af935ed7afabb239ceced35827d753699fab6bd3e1f0d5bd3d2d91fd94", kill_on_drop: false }` [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/semantics/kind.rs:39:30 [INFO] [stderr] | [INFO] [stderr] 39 | fn action(&self) -> Option<&Any/*👈TBD*/> { [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/semantics/kind.rs:70:30 [INFO] [stderr] | [INFO] [stderr] 70 | fn action(&self) -> Option<&Any /*👈TBD*/>; [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Any` [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] [INFO] [stderr] warning: `scdlang` (lib) generated 2 warnings [INFO] [stderr] warning: `scdlang` (lib test) generated 2 warnings (2 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/scdlang-e17a8f61a7a678d0) [INFO] [stdout] running 20 tests [INFO] [stdout] test core::test::loop_from ... ok [INFO] [stdout] test core::test::loop_to ... ok [INFO] [stdout] test core::test::self_transition ... ok [INFO] [stdout] test core::test::transient_loop_from ... ok [INFO] [stdout] test core::test::transition_to ... ok [INFO] [stdout] test semantics::transition::pair::fix_issues::indirect_loop_transition ... ok [INFO] [stdout] test semantics::transition::pair::normal_transition ... ok [INFO] [stdout] test core::test::transition_from ... ok [INFO] [stdout] test core::test::should_fail_when::use_wrong_symbol ... ok [INFO] [stdout] test core::test::transient_loop_to ... ok [INFO] [stdout] test semantics::transition::pair::semantics_error::ambigous_transition::transient_transition_after_trigger ... ok [INFO] [stdout] test error::variant::syntax_error ... ok [INFO] [stdout] test core::test::trigger_at ... ok [INFO] [stdout] test core::test::toggle_transition ... ok [INFO] [stdout] test semantics::transition::pair::semantics_error::ambigous_transition::transient_transition_before_trigger ... ok [INFO] [stdout] test semantics::transition::pair::loop_transition ... ok [INFO] [stderr] Doc-tests scdlang [INFO] [stdout] test semantics::transition::pair::toggle_transition ... ok [INFO] [stdout] test semantics::transition::pair::semantics_error::duplicate_transition_with_same_trigger ... ok [INFO] [stdout] test semantics::transition::pair::transient_loop_transition ... ok [INFO] [stdout] test semantics::transition::pair::semantics_error::duplicate_transient_transition ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test src/core/builder.rs - core::builder::Scdlang (line 9) ... ignored [INFO] [stdout] test src/external.rs - external (line 44) ... ignored [INFO] [stdout] test src/lib.rs - grammar (line 23) ... ignored [INFO] [stdout] test src/external.rs - external (line 7) - compile ... FAILED [INFO] [stdout] test src/core/parser.rs - core::parser::parse (line 13) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/external.rs - external (line 7) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `error` [INFO] [stdout] --> src/external.rs:33:65 [INFO] [stdout] | [INFO] [stdout] 28 | fn insert_parse(&mut self, source: &str) -> Result<(), Box> { [INFO] [stdout] | ^^^^^ use of undeclared crate or module `error` [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `error` [INFO] [stdout] --> src/external.rs:37:75 [INFO] [stdout] | [INFO] [stdout] 32 | fn try_parse(source: &str, builder: Scdlang<'a>) -> Result> { [INFO] [stdout] | ^^^^^ use of undeclared crate or module `error` [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Scdlang` in this scope [INFO] [stdout] --> src/external.rs:10:11 [INFO] [stdout] | [INFO] [stdout] 5 | builder: Scdlang<'a>, // or any type that implmenet trait `Builder` [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 | use scdlang::Scdlang; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Scdlang` [INFO] [stdout] --> src/external.rs:16:21 [INFO] [stdout] | [INFO] [stdout] 11 | let mut builder = Scdlang::new(); [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 | use scdlang::Scdlang; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0405]: cannot find trait `Parser` in this scope [INFO] [stdout] --> src/external.rs:23:10 [INFO] [stdout] | [INFO] [stdout] 18 | impl<'a> Parser<'a> for Machine<'a> { [INFO] [stdout] | ^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing one of these items [INFO] [stdout] | [INFO] [stdout] 2 | use pest::Parser; [INFO] [stdout] | [INFO] [stdout] 2 | use scdlang::prelude::Parser; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Builder` in this scope [INFO] [stdout] --> src/external.rs:24:34 [INFO] [stdout] | [INFO] [stdout] 19 | fn configure(&mut self) -> &mut Builder<'a> { [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing one of these items [INFO] [stdout] | [INFO] [stdout] 2 | use scdlang::prelude::Builder; [INFO] [stdout] | [INFO] [stdout] 2 | use std::thread::Builder; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `DynError` in this scope [INFO] [stdout] --> src/external.rs:28:50 [INFO] [stdout] | [INFO] [stdout] 18 | impl<'a> Parser<'a> for Machine<'a> { [INFO] [stdout] | - help: you might be missing a type parameter: `, DynError` [INFO] [stdout] ... [INFO] [stdout] 23 | fn parse(&mut self, source: &str) -> Result<(), DynError> { [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0412]: cannot find type `Scdlang` in this scope [INFO] [stdout] --> src/external.rs:37:38 [INFO] [stdout] | [INFO] [stdout] 32 | fn try_parse(source: &str, builder: Scdlang<'a>) -> Result> { [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 | use scdlang::Scdlang; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/external.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 6 | schema: std::any::Any, [INFO] [stdout] | ^^^^^^^^^^^^^ help: use `dyn`: `dyn std::any::Any` [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] [INFO] [stdout] error: aborting due to 8 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0405, E0412, E0433. [INFO] [stdout] For more information about an error, try `rustc --explain E0405`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/core/parser.rs - core::parser::parse (line 13) stdout ---- [INFO] [stdout] error[E0425]: cannot find function `parse` in this scope [INFO] [stdout] --> src/core/parser.rs:14:19 [INFO] [stdout] | [INFO] [stdout] 3 | let token_pairs = parse("A -> B")?; [INFO] [stdout] | ^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this function [INFO] [stdout] | [INFO] [stdout] 2 | use scdlang::parse; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0423]: expected function, found macro `println` [INFO] [stdout] --> src/core/parser.rs:15:1 [INFO] [stdout] | [INFO] [stdout] 4 | println("{:#?}", token_pairs); [INFO] [stdout] | ^^^^^^^ not a function [INFO] [stdout] | [INFO] [stdout] help: use `!` to invoke the macro [INFO] [stdout] | [INFO] [stdout] 4 | println!("{:#?}", token_pairs); [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> src/core/parser.rs:14:34 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_core_parser_rs_13_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 3 | | let token_pairs = parse("A -> B")?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | println("{:#?}", token_pairs); [INFO] [stdout] 5 | | } _doctest_main_src_core_parser_rs_13_0() } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual<_>` is not implemented for `()` [INFO] [stdout] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0423, E0425. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/core/parser.rs - core::parser::parse (line 13) [INFO] [stdout] src/external.rs - external (line 7) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 3 ignored; 0 measured; 0 filtered out; finished in 0.29s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "8bc343af935ed7afabb239ceced35827d753699fab6bd3e1f0d5bd3d2d91fd94", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8bc343af935ed7afabb239ceced35827d753699fab6bd3e1f0d5bd3d2d91fd94", kill_on_drop: false }` [INFO] [stdout] 8bc343af935ed7afabb239ceced35827d753699fab6bd3e1f0d5bd3d2d91fd94