Oct 31 17:16:08.833 INFO checking zabio3/peano against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 17:16:08.833 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-3/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Oct 31 17:16:09.248 INFO blam! 8b7ab0bb89aac85a8168023994084a96646b949c15b480b605d1a5ea98474015
Oct 31 17:16:09.260 INFO running `"docker" "start" "-a" "8b7ab0bb89aac85a8168023994084a96646b949c15b480b605d1a5ea98474015"`
Oct 31 17:16:10.723 INFO kablam! usermod: no changes
Oct 31 17:16:10.784 INFO kablam!     Checking peano v0.1.0 (/source)
Oct 31 17:16:11.052 INFO kablam! warning: enum is never used: `Peano`
Oct 31 17:16:11.052 INFO kablam!  --> src/main.rs:2:1
Oct 31 17:16:11.052 INFO kablam!   |
Oct 31 17:16:11.052 INFO kablam! 2 | enum Peano<'a> {
Oct 31 17:16:11.052 INFO kablam!   | ^^^^^^^^^^^^^^
Oct 31 17:16:11.052 INFO kablam!   |
Oct 31 17:16:11.052 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 17:16:11.052 INFO kablam! 
Oct 31 17:16:11.052 INFO kablam! warning: method is never used: `to_i`
Oct 31 17:16:11.052 INFO kablam!   --> src/main.rs:13:5
Oct 31 17:16:11.052 INFO kablam!    |
Oct 31 17:16:11.052 INFO kablam! 13 |     fn to_i(&self) -> u32 {
Oct 31 17:16:11.052 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^
Oct 31 17:16:11.052 INFO kablam! 
Oct 31 17:16:11.052 INFO kablam! warning: function is never used: `zero`
Oct 31 17:16:11.052 INFO kablam!   --> src/main.rs:21:1
Oct 31 17:16:11.052 INFO kablam!    |
Oct 31 17:16:11.052 INFO kablam! 21 | fn zero<'a>() -> Peano<'a> {
Oct 31 17:16:11.052 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 17:16:11.052 INFO kablam! 
Oct 31 17:16:11.052 INFO kablam! warning: function is never used: `suc`
Oct 31 17:16:11.053 INFO kablam!   --> src/main.rs:26:1
Oct 31 17:16:11.053 INFO kablam!    |
Oct 31 17:16:11.053 INFO kablam! 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Oct 31 17:16:11.053 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 17:16:11.053 INFO kablam! 
Oct 31 17:16:11.156 INFO kablam! warning: variant is never constructed: `Suc`
Oct 31 17:16:11.156 INFO kablam!  --> src/main.rs:8:5
Oct 31 17:16:11.156 INFO kablam!   |
Oct 31 17:16:11.156 INFO kablam! 8 |     Suc(&'a Peano<'a>),
Oct 31 17:16:11.156 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Oct 31 17:16:11.156 INFO kablam!   |
Oct 31 17:16:11.156 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 31 17:16:11.156 INFO kablam! 
Oct 31 17:16:11.156 INFO kablam! warning: function is never used: `suc`
Oct 31 17:16:11.156 INFO kablam!   --> src/main.rs:26:1
Oct 31 17:16:11.156 INFO kablam!    |
Oct 31 17:16:11.156 INFO kablam! 26 | fn suc<'a>(n: &'a Peano) -> Peano<'a> {
Oct 31 17:16:11.156 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 31 17:16:11.156 INFO kablam! 
Oct 31 17:16:11.204 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Oct 31 17:16:11.206 INFO kablam! su: No module specific data is present
Oct 31 17:16:12.531 INFO running `"docker" "rm" "-f" "8b7ab0bb89aac85a8168023994084a96646b949c15b480b605d1a5ea98474015"`
Oct 31 17:16:12.836 INFO blam! 8b7ab0bb89aac85a8168023994084a96646b949c15b480b605d1a5ea98474015