[INFO] fetching crate ebnf 0.1.4...
[INFO] testing ebnf-0.1.4 against 1.76.0 for beta-1.77-1
[INFO] extracting crate ebnf 0.1.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ebnf 0.1.4 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ebnf 0.1.4
[INFO] finished tweaking crates.io crate ebnf 0.1.4
[INFO] tweaked toml for crates.io crate ebnf 0.1.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-width v0.1.7
[INFO] [stderr]   Downloaded parse-hyperlinks v0.23.4
[INFO] [stderr]   Downloaded html-escape v0.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89d063a14fa174746c332a3d763d93b0ea1e0a3f2d1d50047b29ae154c7b7f0b
[INFO] running `Command { std: "docker" "start" "-a" "89d063a14fa174746c332a3d763d93b0ea1e0a3f2d1d50047b29ae154c7b7f0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89d063a14fa174746c332a3d763d93b0ea1e0a3f2d1d50047b29ae154c7b7f0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89d063a14fa174746c332a3d763d93b0ea1e0a3f2d1d50047b29ae154c7b7f0b", kill_on_drop: false }`
[INFO] [stdout] 89d063a14fa174746c332a3d763d93b0ea1e0a3f2d1d50047b29ae154c7b7f0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36a0460cc75052124ed7a050321fe0e575ca0d2efc7e549058e0124362ea39d9
[INFO] running `Command { std: "docker" "start" "-a" "36a0460cc75052124ed7a050321fe0e575ca0d2efc7e549058e0124362ea39d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling parse-hyperlinks v0.23.4
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "36a0460cc75052124ed7a050321fe0e575ca0d2efc7e549058e0124362ea39d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36a0460cc75052124ed7a050321fe0e575ca0d2efc7e549058e0124362ea39d9", kill_on_drop: false }`
[INFO] [stdout] 36a0460cc75052124ed7a050321fe0e575ca0d2efc7e549058e0124362ea39d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1414304e4b7df6bbd4f5a88bf24bccfdc955bd28a162e0f3ca77c329a30bae79
[INFO] running `Command { std: "docker" "start" "-a" "1414304e4b7df6bbd4f5a88bf24bccfdc955bd28a162e0f3ca77c329a30bae79", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling similar v2.4.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling console v0.15.8
[INFO] [stderr]    Compiling insta v1.34.0
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.20s
[INFO] running `Command { std: "docker" "inspect" "1414304e4b7df6bbd4f5a88bf24bccfdc955bd28a162e0f3ca77c329a30bae79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1414304e4b7df6bbd4f5a88bf24bccfdc955bd28a162e0f3ca77c329a30bae79", kill_on_drop: false }`
[INFO] [stdout] 1414304e4b7df6bbd4f5a88bf24bccfdc955bd28a162e0f3ca77c329a30bae79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f7c7442a18337c0bc4238f755f1769d7dabf61ee3d4dd5d8501f22b55ec31662
[INFO] running `Command { std: "docker" "start" "-a" "f7c7442a18337c0bc4238f755f1769d7dabf61ee3d4dd5d8501f22b55ec31662", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ebnf-aa7c630a8afc5d59)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test parser::test::test_parse ... ok
[INFO] [stdout] test parser::test::alternation_precidence_multiple ... ok
[INFO] [stdout] test parser::test::concat_precidence ... ok
[INFO] [stdout] test parser::test::simple_alternation ... ok
[INFO] [stdout] test parser::test::underscore ... ok
[INFO] [stdout] test parser::test::alternation_precidence_group ... ok
[INFO] [stdout] test parser::test::escaped_string ... ok
[INFO] [stdout] test parser::test::space_before_semi ... ok
[INFO] [stdout] test parser::test::concat_precidence_reverse ... ok
[INFO] [stdout] test parser::test::alternation_precidence ... ok
[INFO] [stdout] test parser::test::alternation_precidence_nested ... ok
[INFO] [stdout] test parser::test::multiple_underscores ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ebnf
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - get_grammar (line 54) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - get_grammar (line 54) 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/lib.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_54_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 10 | let grammar = get_grammar(grammar_literal)?;
[INFO] [stdout]    |                                           ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, nom::internal::Err<nom::error::VerboseError<&str>>>>` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - get_grammar (line 54)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f7c7442a18337c0bc4238f755f1769d7dabf61ee3d4dd5d8501f22b55ec31662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7c7442a18337c0bc4238f755f1769d7dabf61ee3d4dd5d8501f22b55ec31662", kill_on_drop: false }`
[INFO] [stdout] f7c7442a18337c0bc4238f755f1769d7dabf61ee3d4dd5d8501f22b55ec31662
[INFO] testing ebnf-0.1.4 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate ebnf 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ebnf 0.1.4 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ebnf 0.1.4
[INFO] finished tweaking crates.io crate ebnf 0.1.4
[INFO] tweaked toml for crates.io crate ebnf 0.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2040c9244272dd9457d65b383e01989b6c6e97bb374181f0ba200f984c403fa
[INFO] running `Command { std: "docker" "start" "-a" "f2040c9244272dd9457d65b383e01989b6c6e97bb374181f0ba200f984c403fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2040c9244272dd9457d65b383e01989b6c6e97bb374181f0ba200f984c403fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2040c9244272dd9457d65b383e01989b6c6e97bb374181f0ba200f984c403fa", kill_on_drop: false }`
[INFO] [stdout] f2040c9244272dd9457d65b383e01989b6c6e97bb374181f0ba200f984c403fa
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2054dac569d92ae63734e75d0f074ecf7c94e1774ea8cf3df754a83389f05de9
[INFO] running `Command { std: "docker" "start" "-a" "2054dac569d92ae63734e75d0f074ecf7c94e1774ea8cf3df754a83389f05de9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]    Compiling memchr v2.7.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling parse-hyperlinks v0.23.4
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.78s
[INFO] running `Command { std: "docker" "inspect" "2054dac569d92ae63734e75d0f074ecf7c94e1774ea8cf3df754a83389f05de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2054dac569d92ae63734e75d0f074ecf7c94e1774ea8cf3df754a83389f05de9", kill_on_drop: false }`
[INFO] [stdout] 2054dac569d92ae63734e75d0f074ecf7c94e1774ea8cf3df754a83389f05de9
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ea58c6590caff8310d6aa29bbac5a434e5507413517df56029e83cb007a7b05
[INFO] running `Command { std: "docker" "start" "-a" "4ea58c6590caff8310d6aa29bbac5a434e5507413517df56029e83cb007a7b05", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling similar v2.4.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling console v0.15.8
[INFO] [stderr]    Compiling insta v1.34.0
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.96s
[INFO] running `Command { std: "docker" "inspect" "4ea58c6590caff8310d6aa29bbac5a434e5507413517df56029e83cb007a7b05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ea58c6590caff8310d6aa29bbac5a434e5507413517df56029e83cb007a7b05", kill_on_drop: false }`
[INFO] [stdout] 4ea58c6590caff8310d6aa29bbac5a434e5507413517df56029e83cb007a7b05
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc435166bc700507a6f9636c05eb348f1536965bbf3d020e010aa5ed28978bfe
[INFO] running `Command { std: "docker" "start" "-a" "dc435166bc700507a6f9636c05eb348f1536965bbf3d020e010aa5ed28978bfe", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ebnf-afc1a2d5e51100b6)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test parser::test::test_parse ... ok
[INFO] [stdout] test parser::test::alternation_precidence_group ... ok
[INFO] [stdout] test parser::test::alternation_precidence ... ok
[INFO] [stdout] test parser::test::alternation_precidence_multiple ... ok
[INFO] [stdout] test parser::test::alternation_precidence_nested ... ok
[INFO] [stdout] test parser::test::escaped_string ... ok
[INFO] [stdout] test parser::test::multiple_underscores ... ok
[INFO] [stdout] test parser::test::concat_precidence_reverse ... ok
[INFO] [stdout] test parser::test::underscore ... ok
[INFO] [stdout] test parser::test::simple_alternation ... ok
[INFO] [stdout] test parser::test::concat_precidence ... ok
[INFO] [stdout] test parser::test::space_before_semi ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ebnf
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - get_grammar (line 54) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - get_grammar (line 54) 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/lib.rs:61:43
[INFO] [stdout]    |
[INFO] [stdout] 4  | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_54_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 10 | let grammar = get_grammar(grammar_literal)?;
[INFO] [stdout]    |                                           ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromResidual<Result<Infallible, nom::internal::Err<nom::error::VerboseError<&str>>>>` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - get_grammar (line 54)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dc435166bc700507a6f9636c05eb348f1536965bbf3d020e010aa5ed28978bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc435166bc700507a6f9636c05eb348f1536965bbf3d020e010aa5ed28978bfe", kill_on_drop: false }`
[INFO] [stdout] dc435166bc700507a6f9636c05eb348f1536965bbf3d020e010aa5ed28978bfe
