Nov 27 16:12:40.426 INFO checking zabio3/peano against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 16:12:40.426 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-1/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 27 16:12:41.131 INFO [stdout] 2db52d8912f0d50d2b66c49d94c18aed977b41a19fae693fc11c237787ff07fe
Nov 27 16:12:41.132 INFO running `"docker" "start" "-a" "2db52d8912f0d50d2b66c49d94c18aed977b41a19fae693fc11c237787ff07fe"`
Nov 27 16:12:43.108 INFO [stderr] usermod: no changes
Nov 27 16:12:43.210 INFO [stderr]     Checking peano v0.1.0 (/source)
Nov 27 16:12:43.517 INFO [stderr] warning: variant is never constructed: `Suc`
Nov 27 16:12:43.517 INFO [stderr]  --> src/main.rs:8:5
Nov 27 16:12:43.517 INFO [stderr]   |
Nov 27 16:12:43.517 INFO [stderr] 8 |     Suc(&'a Peano<'a>),
Nov 27 16:12:43.517 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 27 16:12:43.517 INFO [stderr]   |
Nov 27 16:12:43.517 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 27 16:12:43.517 INFO [stderr] 
Nov 27 16:12:43.517 INFO [stderr] warning: function is never used: `suc`
Nov 27 16:12:43.517 INFO [stderr]   --> src/main.rs:26:1
Nov 27 16:12:43.517 INFO [stderr]    |
Nov 27 16:12:43.517 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Nov 27 16:12:43.517 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:12:43.517 INFO [stderr] 
Nov 27 16:12:43.592 INFO [stderr] warning: enum is never used: `Peano`
Nov 27 16:12:43.592 INFO [stderr]  --> src/main.rs:2:1
Nov 27 16:12:43.592 INFO [stderr]   |
Nov 27 16:12:43.592 INFO [stderr] 2 | enum Peano<'a> {
Nov 27 16:12:43.592 INFO [stderr]   | ^^^^^^^^^^^^^^
Nov 27 16:12:43.592 INFO [stderr]   |
Nov 27 16:12:43.592 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 27 16:12:43.592 INFO [stderr] 
Nov 27 16:12:43.592 INFO [stderr] warning: method is never used: `to_i`
Nov 27 16:12:43.592 INFO [stderr]   --> src/main.rs:13:5
Nov 27 16:12:43.592 INFO [stderr]    |
Nov 27 16:12:43.592 INFO [stderr] 13 |     fn to_i(&self) -> u32 {
Nov 27 16:12:43.592 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:12:43.592 INFO [stderr] 
Nov 27 16:12:43.592 INFO [stderr] warning: function is never used: `zero`
Nov 27 16:12:43.592 INFO [stderr]   --> src/main.rs:21:1
Nov 27 16:12:43.592 INFO [stderr]    |
Nov 27 16:12:43.593 INFO [stderr] 21 | fn zero<'a>() -> Peano<'a> {
Nov 27 16:12:43.593 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:12:43.593 INFO [stderr] 
Nov 27 16:12:43.593 INFO [stderr] warning: function is never used: `suc`
Nov 27 16:12:43.593 INFO [stderr]   --> src/main.rs:26:1
Nov 27 16:12:43.593 INFO [stderr]    |
Nov 27 16:12:43.593 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Nov 27 16:12:43.593 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 27 16:12:43.593 INFO [stderr] 
Nov 27 16:12:43.628 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Nov 27 16:12:43.631 INFO [stderr] su: No module specific data is present
Nov 27 16:12:44.926 INFO running `"docker" "inspect" "2db52d8912f0d50d2b66c49d94c18aed977b41a19fae693fc11c237787ff07fe"`
Nov 27 16:12:45.202 INFO running `"docker" "rm" "-f" "2db52d8912f0d50d2b66c49d94c18aed977b41a19fae693fc11c237787ff07fe"`
Nov 27 16:12:45.589 INFO [stdout] 2db52d8912f0d50d2b66c49d94c18aed977b41a19fae693fc11c237787ff07fe