Dec 17 11:04:40.053 INFO checking zabio3/peano against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 11:04:40.054 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 11:04:40.559 INFO [stdout] 02bd58c7759e8cc0f5e33ed85716872e5e191bbbca2f690fca516bee5eeb4d28
Dec 17 11:04:40.561 INFO running `"docker" "start" "-a" "02bd58c7759e8cc0f5e33ed85716872e5e191bbbca2f690fca516bee5eeb4d28"`
Dec 17 11:04:43.016 INFO [stderr]     Checking peano v0.1.0 (/opt/crater/workdir)
Dec 17 11:04:43.291 INFO [stderr] warning: enum is never used: `Peano`
Dec 17 11:04:43.291 INFO [stderr]  --> src/main.rs:2:1
Dec 17 11:04:43.292 INFO [stderr]   |
Dec 17 11:04:43.292 INFO [stderr] 2 | enum Peano<'a> {
Dec 17 11:04:43.292 INFO [stderr]   | ^^^^^^^^^^^^^^
Dec 17 11:04:43.293 INFO [stderr]   |
Dec 17 11:04:43.293 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 11:04:43.293 INFO [stderr] 
Dec 17 11:04:43.293 INFO [stderr] warning: method is never used: `to_i`
Dec 17 11:04:43.293 INFO [stderr]   --> src/main.rs:13:5
Dec 17 11:04:43.294 INFO [stderr]    |
Dec 17 11:04:43.294 INFO [stderr] 13 |     fn to_i(&self) -> u32 {
Dec 17 11:04:43.294 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:04:43.294 INFO [stderr] 
Dec 17 11:04:43.294 INFO [stderr] warning: function is never used: `zero`
Dec 17 11:04:43.294 INFO [stderr]   --> src/main.rs:21:1
Dec 17 11:04:43.295 INFO [stderr]    |
Dec 17 11:04:43.295 INFO [stderr] 21 | fn zero<'a>() -> Peano<'a> {
Dec 17 11:04:43.295 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:04:43.295 INFO [stderr] 
Dec 17 11:04:43.295 INFO [stderr] warning: function is never used: `suc`
Dec 17 11:04:43.295 INFO [stderr]   --> src/main.rs:26:1
Dec 17 11:04:43.296 INFO [stderr]    |
Dec 17 11:04:43.296 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Dec 17 11:04:43.296 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:04:43.296 INFO [stderr] 
Dec 17 11:04:43.300 INFO [stderr] warning: variant is never constructed: `Suc`
Dec 17 11:04:43.301 INFO [stderr]  --> src/main.rs:8:5
Dec 17 11:04:43.301 INFO [stderr]   |
Dec 17 11:04:43.301 INFO [stderr] 8 |     Suc(&'a Peano<'a>),
Dec 17 11:04:43.301 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 17 11:04:43.301 INFO [stderr]   |
Dec 17 11:04:43.301 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 11:04:43.301 INFO [stderr] 
Dec 17 11:04:43.301 INFO [stderr] warning: function is never used: `suc`
Dec 17 11:04:43.301 INFO [stderr]   --> src/main.rs:26:1
Dec 17 11:04:43.301 INFO [stderr]    |
Dec 17 11:04:43.301 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Dec 17 11:04:43.301 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 11:04:43.301 INFO [stderr] 
Dec 17 11:04:43.326 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
Dec 17 11:04:44.109 INFO running `"docker" "inspect" "02bd58c7759e8cc0f5e33ed85716872e5e191bbbca2f690fca516bee5eeb4d28"`
Dec 17 11:04:44.444 INFO running `"docker" "rm" "-f" "02bd58c7759e8cc0f5e33ed85716872e5e191bbbca2f690fca516bee5eeb4d28"`
Dec 17 11:04:44.764 INFO [stdout] 02bd58c7759e8cc0f5e33ed85716872e5e191bbbca2f690fca516bee5eeb4d28