[INFO] fetching crate ungrammar 1.16.1...
[INFO] testing ungrammar-1.16.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate ungrammar 1.16.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate ungrammar 1.16.1
[INFO] finished tweaking crates.io crate ungrammar 1.16.1
[INFO] tweaked toml for crates.io crate ungrammar 1.16.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ungrammar 1.16.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94e8499f8543454575bc97799917c3a56ee9d46bf4284340e243d04a525ce518
[INFO] running `Command { std: "docker" "start" "-a" "94e8499f8543454575bc97799917c3a56ee9d46bf4284340e243d04a525ce518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94e8499f8543454575bc97799917c3a56ee9d46bf4284340e243d04a525ce518", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94e8499f8543454575bc97799917c3a56ee9d46bf4284340e243d04a525ce518", kill_on_drop: false }`
[INFO] [stdout] 94e8499f8543454575bc97799917c3a56ee9d46bf4284340e243d04a525ce518
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24418d9daf1e02d4176ba06bcad8ecbcebffc299f7f9eaabc337f747f7522efb
[INFO] running `Command { std: "docker" "start" "-a" "24418d9daf1e02d4176ba06bcad8ecbcebffc299f7f9eaabc337f747f7522efb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ungrammar v1.16.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `bail`
[INFO] [stdout]  --> src/parser.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     error::{bail, format_err, Result},
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "24418d9daf1e02d4176ba06bcad8ecbcebffc299f7f9eaabc337f747f7522efb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24418d9daf1e02d4176ba06bcad8ecbcebffc299f7f9eaabc337f747f7522efb", kill_on_drop: false }`
[INFO] [stdout] 24418d9daf1e02d4176ba06bcad8ecbcebffc299f7f9eaabc337f747f7522efb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de9bb835fd5a451ae95ef8798b7abe79d1e94aebf427fda8e189949d878e6ad6
[INFO] running `Command { std: "docker" "start" "-a" "de9bb835fd5a451ae95ef8798b7abe79d1e94aebf427fda8e189949d878e6ad6", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `bail`
[INFO] [stdout]  --> src/parser.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     error::{bail, format_err, Result},
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ungrammar v1.16.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `bail`
[INFO] [stdout]  --> src/parser.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     error::{bail, format_err, Result},
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "de9bb835fd5a451ae95ef8798b7abe79d1e94aebf427fda8e189949d878e6ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de9bb835fd5a451ae95ef8798b7abe79d1e94aebf427fda8e189949d878e6ad6", kill_on_drop: false }`
[INFO] [stdout] de9bb835fd5a451ae95ef8798b7abe79d1e94aebf427fda8e189949d878e6ad6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ddf0244f559ec41b7f08ec2a938b7fdc902f5918866fdd1e4fa7e5f448d962bb
[INFO] running `Command { std: "docker" "start" "-a" "ddf0244f559ec41b7f08ec2a938b7fdc902f5918866fdd1e4fa7e5f448d962bb", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `bail`
[INFO] [stderr]  --> src/parser.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 |     error::{bail, format_err, Result},
[INFO] [stderr]   |             ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ungrammar` (lib) generated 1 warning (run `cargo fix --lib -p ungrammar` to apply 1 suggestion)
[INFO] [stderr] warning: `ungrammar` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ungrammar-1b538998b78afc9c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test smoke ... ok
[INFO] [stderr]    Doc-tests ungrammar
[INFO] [stdout] test test_rust_grammar ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ddf0244f559ec41b7f08ec2a938b7fdc902f5918866fdd1e4fa7e5f448d962bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddf0244f559ec41b7f08ec2a938b7fdc902f5918866fdd1e4fa7e5f448d962bb", kill_on_drop: false }`
[INFO] [stdout] ddf0244f559ec41b7f08ec2a938b7fdc902f5918866fdd1e4fa7e5f448d962bb