Dec 19 04:44:33.737 INFO checking zabio3/peano against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 04:44:33.737 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/zabio3/peano:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 04:44:34.193 INFO [stdout] 40cc88b262fb48be47160ca8e983bc2bbb41b873fc3f7e72d61d68e736f561d7
Dec 19 04:44:34.226 INFO running `"docker" "start" "-a" "40cc88b262fb48be47160ca8e983bc2bbb41b873fc3f7e72d61d68e736f561d7"`
Dec 19 04:44:35.436 INFO [stderr]     Checking peano v0.1.0 (/opt/crater/workdir)
Dec 19 04:44:35.567 INFO [stderr] warning: variant is never constructed: `Suc`
Dec 19 04:44:35.567 INFO [stderr]  --> src/main.rs:8:5
Dec 19 04:44:35.567 INFO [stderr]   |
Dec 19 04:44:35.567 INFO [stderr] 8 |     Suc(&'a Peano<'a>),
Dec 19 04:44:35.567 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 19 04:44:35.567 INFO [stderr]   |
Dec 19 04:44:35.567 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 04:44:35.567 INFO [stderr] 
Dec 19 04:44:35.567 INFO [stderr] warning: function is never used: `suc`
Dec 19 04:44:35.567 INFO [stderr]   --> src/main.rs:26:1
Dec 19 04:44:35.567 INFO [stderr]    |
Dec 19 04:44:35.567 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Dec 19 04:44:35.567 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 04:44:35.567 INFO [stderr] 
Dec 19 04:44:35.583 INFO [stderr] warning: enum is never used: `Peano`
Dec 19 04:44:35.583 INFO [stderr]  --> src/main.rs:2:1
Dec 19 04:44:35.583 INFO [stderr]   |
Dec 19 04:44:35.583 INFO [stderr] 2 | enum Peano<'a> {
Dec 19 04:44:35.583 INFO [stderr]   | ^^^^^^^^^^^^^^
Dec 19 04:44:35.583 INFO [stderr]   |
Dec 19 04:44:35.583 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 04:44:35.583 INFO [stderr] 
Dec 19 04:44:35.583 INFO [stderr] warning: method is never used: `to_i`
Dec 19 04:44:35.583 INFO [stderr]   --> src/main.rs:13:5
Dec 19 04:44:35.584 INFO [stderr]    |
Dec 19 04:44:35.584 INFO [stderr] 13 |     fn to_i(&self) -> u32 {
Dec 19 04:44:35.584 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 04:44:35.584 INFO [stderr] 
Dec 19 04:44:35.584 INFO [stderr] warning: function is never used: `zero`
Dec 19 04:44:35.584 INFO [stderr]   --> src/main.rs:21:1
Dec 19 04:44:35.584 INFO [stderr]    |
Dec 19 04:44:35.584 INFO [stderr] 21 | fn zero<'a>() -> Peano<'a> {
Dec 19 04:44:35.584 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 04:44:35.584 INFO [stderr] 
Dec 19 04:44:35.584 INFO [stderr] warning: function is never used: `suc`
Dec 19 04:44:35.584 INFO [stderr]   --> src/main.rs:26:1
Dec 19 04:44:35.584 INFO [stderr]    |
Dec 19 04:44:35.584 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Dec 19 04:44:35.584 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 04:44:35.584 INFO [stderr] 
Dec 19 04:44:35.607 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
Dec 19 04:44:36.018 INFO running `"docker" "inspect" "40cc88b262fb48be47160ca8e983bc2bbb41b873fc3f7e72d61d68e736f561d7"`
Dec 19 04:44:36.234 INFO running `"docker" "rm" "-f" "40cc88b262fb48be47160ca8e983bc2bbb41b873fc3f7e72d61d68e736f561d7"`
Dec 19 04:44:36.403 INFO [stdout] 40cc88b262fb48be47160ca8e983bc2bbb41b873fc3f7e72d61d68e736f561d7