Dec 12 08:50:38.622 INFO checking ronfmt-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 08:50:38.622 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 08:50:39.070 INFO [stdout] f0f5f92b35f0e9c52b1132f9a1f158d01f7396fc2f4777b0a4fc8eddeb35038b
Dec 12 08:50:39.076 INFO running `"docker" "start" "-a" "f0f5f92b35f0e9c52b1132f9a1f158d01f7396fc2f4777b0a4fc8eddeb35038b"`
Dec 12 08:50:40.439 INFO [stderr] usermod: no changes
Dec 12 08:50:40.536 INFO [stderr]     Checking ronfmt v0.1.0 (/source)
Dec 12 08:50:43.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:50:43.297 INFO [stderr]   --> src/ast/display.rs:10:13
Dec 12 08:50:43.297 INFO [stderr]    |
Dec 12 08:50:43.297 INFO [stderr] 10 |             writeln!(f, "#![enable({})]", extensions.iter().join(", "));
Dec 12 08:50:43.297 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 08:50:43.297 INFO [stderr]    |
Dec 12 08:50:43.297 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 08:50:43.297 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:50:43.297 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 12 08:50:43.297 INFO [stderr] 
Dec 12 08:50:43.319 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 08:50:43.319 INFO [stderr]   --> src/ast/display.rs:10:13
Dec 12 08:50:43.319 INFO [stderr]    |
Dec 12 08:50:43.319 INFO [stderr] 10 |             writeln!(f, "#![enable({})]", extensions.iter().join(", "));
Dec 12 08:50:43.319 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 08:50:43.319 INFO [stderr]    |
Dec 12 08:50:43.319 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 08:50:43.319 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 08:50:43.319 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 12 08:50:43.319 INFO [stderr] 
Dec 12 08:50:43.413 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
Dec 12 08:50:43.421 INFO [stderr] su: No module specific data is present
Dec 12 08:50:44.021 INFO running `"docker" "inspect" "f0f5f92b35f0e9c52b1132f9a1f158d01f7396fc2f4777b0a4fc8eddeb35038b"`
Dec 12 08:50:44.300 INFO running `"docker" "rm" "-f" "f0f5f92b35f0e9c52b1132f9a1f158d01f7396fc2f4777b0a4fc8eddeb35038b"`
Dec 12 08:50:44.447 INFO [stdout] f0f5f92b35f0e9c52b1132f9a1f158d01f7396fc2f4777b0a4fc8eddeb35038b