Dec 05 01:33:01.963 INFO checking Lait-au-Cafe/change_rings against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 01:33:01.963 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 01:33:02.228 INFO [stdout] f96581b5f08b898e27aa5de00eb36d58e997847824372ad1e5fc1b37a9456bd3
Dec 05 01:33:02.229 INFO running `"docker" "start" "-a" "f96581b5f08b898e27aa5de00eb36d58e997847824372ad1e5fc1b37a9456bd3"`
Dec 05 01:33:03.751 INFO [stderr] usermod: no changes
Dec 05 01:33:03.818 INFO [stderr]     Checking regex v0.2.2
Dec 05 01:33:05.855 INFO [stderr]     Checking change_rings v0.1.0 (/source)
Dec 05 01:33:06.791 INFO [stderr] warning: function is never used: `display`
Dec 05 01:33:06.791 INFO [stderr]   --> src/node.rs:38:1
Dec 05 01:33:06.791 INFO [stderr]    |
Dec 05 01:33:06.791 INFO [stderr] 38 | pub fn display(node_list: NodeList) {
Dec 05 01:33:06.791 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:33:06.791 INFO [stderr]    |
Dec 05 01:33:06.791 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 01:33:06.791 INFO [stderr] 
Dec 05 01:33:06.791 INFO [stderr] warning: function is never used: `display2`
Dec 05 01:33:06.791 INFO [stderr]   --> src/node.rs:61:1
Dec 05 01:33:06.791 INFO [stderr]    |
Dec 05 01:33:06.791 INFO [stderr] 61 | / pub fn display2(
Dec 05 01:33:06.791 INFO [stderr] 62 | |     node_list: &NodeList, 
Dec 05 01:33:06.791 INFO [stderr] 63 | |     n: usize
Dec 05 01:33:06.791 INFO [stderr] 64 | | ) {
Dec 05 01:33:06.791 INFO [stderr] ...  |
Dec 05 01:33:06.791 INFO [stderr] 84 | |     }
Dec 05 01:33:06.791 INFO [stderr] 85 | | }
Dec 05 01:33:06.791 INFO [stderr]    | |_^
Dec 05 01:33:06.791 INFO [stderr] 
Dec 05 01:33:06.878 INFO [stderr] warning: function is never used: `display`
Dec 05 01:33:06.878 INFO [stderr]   --> src/node.rs:38:1
Dec 05 01:33:06.878 INFO [stderr]    |
Dec 05 01:33:06.878 INFO [stderr] 38 | pub fn display(node_list: NodeList) {
Dec 05 01:33:06.878 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 01:33:06.878 INFO [stderr]    |
Dec 05 01:33:06.878 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 01:33:06.878 INFO [stderr] 
Dec 05 01:33:06.878 INFO [stderr] warning: function is never used: `display2`
Dec 05 01:33:06.878 INFO [stderr]   --> src/node.rs:61:1
Dec 05 01:33:06.878 INFO [stderr]    |
Dec 05 01:33:06.878 INFO [stderr] 61 | / pub fn display2(
Dec 05 01:33:06.878 INFO [stderr] 62 | |     node_list: &NodeList, 
Dec 05 01:33:06.878 INFO [stderr] 63 | |     n: usize
Dec 05 01:33:06.878 INFO [stderr] 64 | | ) {
Dec 05 01:33:06.878 INFO [stderr] ...  |
Dec 05 01:33:06.878 INFO [stderr] 84 | |     }
Dec 05 01:33:06.878 INFO [stderr] 85 | | }
Dec 05 01:33:06.878 INFO [stderr]    | |_^
Dec 05 01:33:06.878 INFO [stderr] 
Dec 05 01:33:06.893 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.12s
Dec 05 01:33:06.895 INFO [stderr] su: No module specific data is present
Dec 05 01:33:07.222 INFO running `"docker" "inspect" "f96581b5f08b898e27aa5de00eb36d58e997847824372ad1e5fc1b37a9456bd3"`
Dec 05 01:33:07.311 INFO running `"docker" "rm" "-f" "f96581b5f08b898e27aa5de00eb36d58e997847824372ad1e5fc1b37a9456bd3"`
Dec 05 01:33:07.401 INFO [stdout] f96581b5f08b898e27aa5de00eb36d58e997847824372ad1e5fc1b37a9456bd3