Dec 04 06:14:01.702 INFO checking zabio3/peano against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 06:14:01.702 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 06:14:02.076 INFO [stdout] ff5d8791fa75f255a7b1442de8c690fb17337c50547cc2a4a6aa5e4428cff04c
Dec 04 06:14:02.081 INFO running `"docker" "start" "-a" "ff5d8791fa75f255a7b1442de8c690fb17337c50547cc2a4a6aa5e4428cff04c"`
Dec 04 06:14:04.186 INFO [stderr] usermod: no changes
Dec 04 06:14:04.266 INFO [stderr]     Checking peano v0.1.0 (/source)
Dec 04 06:14:04.468 INFO [stderr] warning: variant is never constructed: `Suc`
Dec 04 06:14:04.468 INFO [stderr]  --> src/main.rs:8:5
Dec 04 06:14:04.468 INFO [stderr]   |
Dec 04 06:14:04.468 INFO [stderr] 8 |     Suc(&'a Peano<'a>),
Dec 04 06:14:04.468 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 04 06:14:04.468 INFO [stderr]   |
Dec 04 06:14:04.468 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 06:14:04.468 INFO [stderr] 
Dec 04 06:14:04.468 INFO [stderr] warning: function is never used: `suc`
Dec 04 06:14:04.468 INFO [stderr]   --> src/main.rs:26:1
Dec 04 06:14:04.468 INFO [stderr]    |
Dec 04 06:14:04.468 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Dec 04 06:14:04.468 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 06:14:04.468 INFO [stderr] 
Dec 04 06:14:04.513 INFO [stderr] warning: enum is never used: `Peano`
Dec 04 06:14:04.513 INFO [stderr]  --> src/main.rs:2:1
Dec 04 06:14:04.513 INFO [stderr]   |
Dec 04 06:14:04.513 INFO [stderr] 2 | enum Peano<'a> {
Dec 04 06:14:04.513 INFO [stderr]   | ^^^^^^^^^^^^^^
Dec 04 06:14:04.513 INFO [stderr]   |
Dec 04 06:14:04.513 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 06:14:04.513 INFO [stderr] 
Dec 04 06:14:04.513 INFO [stderr] warning: method is never used: `to_i`
Dec 04 06:14:04.513 INFO [stderr]   --> src/main.rs:13:5
Dec 04 06:14:04.513 INFO [stderr]    |
Dec 04 06:14:04.513 INFO [stderr] 13 |     fn to_i(&self) -> u32 {
Dec 04 06:14:04.513 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 04 06:14:04.513 INFO [stderr] 
Dec 04 06:14:04.513 INFO [stderr] warning: function is never used: `zero`
Dec 04 06:14:04.513 INFO [stderr]   --> src/main.rs:21:1
Dec 04 06:14:04.513 INFO [stderr]    |
Dec 04 06:14:04.513 INFO [stderr] 21 | fn zero<'a>() -> Peano<'a> {
Dec 04 06:14:04.513 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 06:14:04.513 INFO [stderr] 
Dec 04 06:14:04.514 INFO [stderr] warning: function is never used: `suc`
Dec 04 06:14:04.514 INFO [stderr]   --> src/main.rs:26:1
Dec 04 06:14:04.514 INFO [stderr]    |
Dec 04 06:14:04.514 INFO [stderr] 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Dec 04 06:14:04.514 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 06:14:04.514 INFO [stderr] 
Dec 04 06:14:04.565 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 04 06:14:04.571 INFO [stderr] su: No module specific data is present
Dec 04 06:14:05.949 INFO running `"docker" "inspect" "ff5d8791fa75f255a7b1442de8c690fb17337c50547cc2a4a6aa5e4428cff04c"`
Dec 04 06:14:06.321 INFO running `"docker" "rm" "-f" "ff5d8791fa75f255a7b1442de8c690fb17337c50547cc2a4a6aa5e4428cff04c"`
Dec 04 06:14:06.671 INFO [stdout] ff5d8791fa75f255a7b1442de8c690fb17337c50547cc2a4a6aa5e4428cff04c