[INFO] fetching crate ebnf 0.1.4...
[INFO] testing ebnf-0.1.4 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate ebnf 0.1.4 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate ebnf 0.1.4 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "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-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding parse-hyperlinks v0.23.4 (latest: v0.27.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parse-hyperlinks v0.23.4
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f95445e017c2ba673707f337647c81b7de50db7eefcadb5e7c1f1bc4f35a3e2
[INFO] running `Command { std: "docker" "start" "-a" "8f95445e017c2ba673707f337647c81b7de50db7eefcadb5e7c1f1bc4f35a3e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f95445e017c2ba673707f337647c81b7de50db7eefcadb5e7c1f1bc4f35a3e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f95445e017c2ba673707f337647c81b7de50db7eefcadb5e7c1f1bc4f35a3e2", kill_on_drop: false }`
[INFO] [stdout] 8f95445e017c2ba673707f337647c81b7de50db7eefcadb5e7c1f1bc4f35a3e2
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 516e954e7796c37ffa453ee668c9a8a1bd306c5db6705524532e60e1de06e28a
[INFO] running `Command { std: "docker" "start" "-a" "516e954e7796c37ffa453ee668c9a8a1bd306c5db6705524532e60e1de06e28a", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling serde_derive v1.0.202
[INFO] [stderr]    Compiling parse-hyperlinks v0.23.4
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.86s
[INFO] running `Command { std: "docker" "inspect" "516e954e7796c37ffa453ee668c9a8a1bd306c5db6705524532e60e1de06e28a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516e954e7796c37ffa453ee668c9a8a1bd306c5db6705524532e60e1de06e28a", kill_on_drop: false }`
[INFO] [stdout] 516e954e7796c37ffa453ee668c9a8a1bd306c5db6705524532e60e1de06e28a
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2040c287f4acf308893424635e9df5eafc4b82f009799cc8f93f675eb37c95a8
[INFO] running `Command { std: "docker" "start" "-a" "2040c287f4acf308893424635e9df5eafc4b82f009799cc8f93f675eb37c95a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling similar v2.5.0
[INFO] [stderr]    Compiling console v0.15.8
[INFO] [stderr]    Compiling insta v1.39.0
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "2040c287f4acf308893424635e9df5eafc4b82f009799cc8f93f675eb37c95a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2040c287f4acf308893424635e9df5eafc4b82f009799cc8f93f675eb37c95a8", kill_on_drop: false }`
[INFO] [stdout] 2040c287f4acf308893424635e9df5eafc4b82f009799cc8f93f675eb37c95a8
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d5af00925ee249d47cb32366b9f50e8020a2066db64d99f1fcea22b3006daeb
[INFO] running `Command { std: "docker" "start" "-a" "4d5af00925ee249d47cb32366b9f50e8020a2066db64d99f1fcea22b3006daeb", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ebnf-9841c21c309a9073)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test parser::test::escaped_string ... ok
[INFO] [stdout] test parser::test::alternation_precidence ... ok
[INFO] [stdout] test parser::test::alternation_precidence_group ... ok
[INFO] [stdout] test parser::test::concat_precidence_reverse ... ok
[INFO] [stdout] test parser::test::alternation_precidence_multiple ... ok
[INFO] [stdout] test parser::test::concat_precidence ... ok
[INFO] [stdout] test parser::test::alternation_precidence_nested ... ok
[INFO] [stdout] test parser::test::multiple_underscores ... ok
[INFO] [stdout] test parser::test::simple_alternation ... ok
[INFO] [stdout] test parser::test::space_before_semi ... ok
[INFO] [stdout] test parser::test::underscore ... ok
[INFO] [stdout] test parser::test::test_parse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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] [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 0.18s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "4d5af00925ee249d47cb32366b9f50e8020a2066db64d99f1fcea22b3006daeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5af00925ee249d47cb32366b9f50e8020a2066db64d99f1fcea22b3006daeb", kill_on_drop: false }`
[INFO] [stdout] 4d5af00925ee249d47cb32366b9f50e8020a2066db64d99f1fcea22b3006daeb
[INFO] testing ebnf-0.1.4 against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] extracting crate ebnf 0.1.4 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate ebnf 0.1.4 on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "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-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 33 packages to latest compatible versions
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding parse-hyperlinks v0.23.4 (latest: v0.27.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e65d3179f4a278cd7ff47e5b2f1f1909f44c6edbce5405835875d69953966d4
[INFO] running `Command { std: "docker" "start" "-a" "2e65d3179f4a278cd7ff47e5b2f1f1909f44c6edbce5405835875d69953966d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e65d3179f4a278cd7ff47e5b2f1f1909f44c6edbce5405835875d69953966d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e65d3179f4a278cd7ff47e5b2f1f1909f44c6edbce5405835875d69953966d4", kill_on_drop: false }`
[INFO] [stdout] 2e65d3179f4a278cd7ff47e5b2f1f1909f44c6edbce5405835875d69953966d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4025bd100070764b1adb03fde610193fdcd1ad6d864f8cbdfc4682609230f1cb
[INFO] running `Command { std: "docker" "start" "-a" "4025bd100070764b1adb03fde610193fdcd1ad6d864f8cbdfc4682609230f1cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling thiserror v1.0.61
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.61
[INFO] [stderr]    Compiling serde_derive v1.0.202
[INFO] [stderr]    Compiling parse-hyperlinks v0.23.4
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.88s
[INFO] running `Command { std: "docker" "inspect" "4025bd100070764b1adb03fde610193fdcd1ad6d864f8cbdfc4682609230f1cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4025bd100070764b1adb03fde610193fdcd1ad6d864f8cbdfc4682609230f1cb", kill_on_drop: false }`
[INFO] [stdout] 4025bd100070764b1adb03fde610193fdcd1ad6d864f8cbdfc4682609230f1cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44a247f881ea5e7b662a38af42b6deb2b8053384b243b0eca8b2a222158966ab
[INFO] running `Command { std: "docker" "start" "-a" "44a247f881ea5e7b662a38af42b6deb2b8053384b243b0eca8b2a222158966ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling similar v2.5.0
[INFO] [stderr]    Compiling console v0.15.8
[INFO] [stderr]    Compiling insta v1.39.0
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "44a247f881ea5e7b662a38af42b6deb2b8053384b243b0eca8b2a222158966ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44a247f881ea5e7b662a38af42b6deb2b8053384b243b0eca8b2a222158966ab", kill_on_drop: false }`
[INFO] [stdout] 44a247f881ea5e7b662a38af42b6deb2b8053384b243b0eca8b2a222158966ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4c4142f57279ad3db82eb48f8a9b6d91657f608eae75158d086a681d508a2519
[INFO] running `Command { std: "docker" "start" "-a" "4c4142f57279ad3db82eb48f8a9b6d91657f608eae75158d086a681d508a2519", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ebnf-9841c21c309a9073)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test parser::test::alternation_precidence_nested ... 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_group ... ok
[INFO] [stdout] test parser::test::concat_precidence_reverse ... ok
[INFO] [stdout] test parser::test::escaped_string ... ok
[INFO] [stdout] test parser::test::multiple_underscores ... ok
[INFO] [stdout] test parser::test::concat_precidence ... ok
[INFO] [stdout] test parser::test::simple_alternation ... ok
[INFO] [stdout] test parser::test::space_before_semi ... ok
[INFO] [stdout] test parser::test::underscore ... ok
[INFO] [stdout] test parser::test::test_parse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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] [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 0.17s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "4c4142f57279ad3db82eb48f8a9b6d91657f608eae75158d086a681d508a2519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4142f57279ad3db82eb48f8a9b6d91657f608eae75158d086a681d508a2519", kill_on_drop: false }`
[INFO] [stdout] 4c4142f57279ad3db82eb48f8a9b6d91657f608eae75158d086a681d508a2519
