[INFO] fetching crate ebnf 0.1.4...
[INFO] testing ebnf-0.1.4 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065
[INFO] extracting crate ebnf 0.1.4 into /workspace/builds/worker-4-tc2/source
[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] validating manifest of crates.io crate ebnf 0.1.4 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 60 packages to latest compatible versions
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] [stderr]       Adding parse-hyperlinks v0.23.4 (available: v0.29.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8b32240a9b1cb8bf949600e88d2980543e54c1b249ca2507eb764d3874cdf8c
[INFO] running `Command { std: "docker" "start" "-a" "e8b32240a9b1cb8bf949600e88d2980543e54c1b249ca2507eb764d3874cdf8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8b32240a9b1cb8bf949600e88d2980543e54c1b249ca2507eb764d3874cdf8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b32240a9b1cb8bf949600e88d2980543e54c1b249ca2507eb764d3874cdf8c", kill_on_drop: false }`
[INFO] [stdout] e8b32240a9b1cb8bf949600e88d2980543e54c1b249ca2507eb764d3874cdf8c
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62b3c1f3afb16b2fbe251ad0bf6b9cbf2211c71bc4ad2abe519f5ee0350a9dec
[INFO] running `Command { std: "docker" "start" "-a" "62b3c1f3afb16b2fbe251ad0bf6b9cbf2211c71bc4ad2abe519f5ee0350a9dec", kill_on_drop: false }`
[INFO] [stderr]    Compiling utf8-width v0.1.8
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling html-escape v0.2.13
[INFO] [stderr]    Compiling parse-hyperlinks v0.23.4
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `Command { std: "docker" "inspect" "62b3c1f3afb16b2fbe251ad0bf6b9cbf2211c71bc4ad2abe519f5ee0350a9dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62b3c1f3afb16b2fbe251ad0bf6b9cbf2211c71bc4ad2abe519f5ee0350a9dec", kill_on_drop: false }`
[INFO] [stdout] 62b3c1f3afb16b2fbe251ad0bf6b9cbf2211c71bc4ad2abe519f5ee0350a9dec
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 697c1158c8b267e622b4efe12fa711e5d93970393caa9b358dc2a7c2c4a1a77f
[INFO] running `Command { std: "docker" "start" "-a" "697c1158c8b267e622b4efe12fa711e5d93970393caa9b358dc2a7c2c4a1a77f", kill_on_drop: false }`
[INFO] [stderr]    Compiling similar v2.7.0
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling console v0.16.3
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling insta v1.47.0
[INFO] [stderr]    Compiling ebnf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.56s
[INFO] running `Command { std: "docker" "inspect" "697c1158c8b267e622b4efe12fa711e5d93970393caa9b358dc2a7c2c4a1a77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697c1158c8b267e622b4efe12fa711e5d93970393caa9b358dc2a7c2c4a1a77f", kill_on_drop: false }`
[INFO] [stdout] 697c1158c8b267e622b4efe12fa711e5d93970393caa9b358dc2a7c2c4a1a77f
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a24ba5d6108dd7f3d04aec59467c66ebe747bd51a145e9f9cf6d46bcb0b922fd
[INFO] running `Command { std: "docker" "start" "-a" "a24ba5d6108dd7f3d04aec59467c66ebe747bd51a145e9f9cf6d46bcb0b922fd", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ebnf-900a2ba021aba4b1)
[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::concat_precidence ... ok
[INFO] [stdout] test parser::test::multiple_underscores ... ok
[INFO] [stdout] test parser::test::alternation_precidence_nested ... ok
[INFO] [stdout] test parser::test::underscore ... ok
[INFO] [stdout] test parser::test::simple_alternation ... ok
[INFO] [stdout] test parser::test::alternation_precidence ... ok
[INFO] [stdout] test parser::test::alternation_precidence_multiple ... ok
[INFO] [stdout] test parser::test::concat_precidence_reverse ... ok
[INFO] [stdout] test parser::test::space_before_semi ... ok
[INFO] [stderr]    Doc-tests ebnf
[INFO] [stdout] test parser::test::escaped_string ... 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] [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] 55 | 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] 61 | let grammar = get_grammar(grammar_literal)?;
[INFO] [stdout]    |                                           ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 55 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_54_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 56 | use ebnf::get_grammar;
[INFO] [stdout] ...
[INFO] [stdout] 61 | let grammar = get_grammar(grammar_literal)?;
[INFO] [stdout] 62 +     Ok(())
[INFO] [stdout]    |
[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 0.20s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "a24ba5d6108dd7f3d04aec59467c66ebe747bd51a145e9f9cf6d46bcb0b922fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a24ba5d6108dd7f3d04aec59467c66ebe747bd51a145e9f9cf6d46bcb0b922fd", kill_on_drop: false }`
[INFO] [stdout] a24ba5d6108dd7f3d04aec59467c66ebe747bd51a145e9f9cf6d46bcb0b922fd
