Dec 12 01:50:45.221 INFO checking Lait-au-Cafe/change_rings against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 01:50:45.221 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 01:50:45.810 INFO [stdout] 62cfbc906416b33574ce8c0b65b5ada0f1bd130690556ed23c9afc19b37d081b
Dec 12 01:50:45.816 INFO running `"docker" "start" "-a" "62cfbc906416b33574ce8c0b65b5ada0f1bd130690556ed23c9afc19b37d081b"`
Dec 12 01:50:47.102 INFO [stderr] usermod: no changes
Dec 12 01:50:47.165 INFO [stderr]     Checking regex v0.2.2
Dec 12 01:50:49.366 INFO [stderr]     Checking change_rings v0.1.0 (/source)
Dec 12 01:50:50.195 INFO [stderr] warning: function is never used: `display`
Dec 12 01:50:50.195 INFO [stderr]   --> src/node.rs:38:1
Dec 12 01:50:50.195 INFO [stderr]    |
Dec 12 01:50:50.195 INFO [stderr] 38 | pub fn display(node_list: NodeList) {
Dec 12 01:50:50.195 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:50:50.195 INFO [stderr]    |
Dec 12 01:50:50.195 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 01:50:50.195 INFO [stderr] 
Dec 12 01:50:50.195 INFO [stderr] warning: function is never used: `display2`
Dec 12 01:50:50.195 INFO [stderr]   --> src/node.rs:61:1
Dec 12 01:50:50.196 INFO [stderr]    |
Dec 12 01:50:50.196 INFO [stderr] 61 | / pub fn display2(
Dec 12 01:50:50.196 INFO [stderr] 62 | |     node_list: &NodeList, 
Dec 12 01:50:50.196 INFO [stderr] 63 | |     n: usize
Dec 12 01:50:50.196 INFO [stderr] 64 | | ) {
Dec 12 01:50:50.196 INFO [stderr] ...  |
Dec 12 01:50:50.196 INFO [stderr] 84 | |     }
Dec 12 01:50:50.196 INFO [stderr] 85 | | }
Dec 12 01:50:50.196 INFO [stderr]    | |_^
Dec 12 01:50:50.196 INFO [stderr] 
Dec 12 01:50:50.318 INFO [stderr] warning: function is never used: `display`
Dec 12 01:50:50.318 INFO [stderr]   --> src/node.rs:38:1
Dec 12 01:50:50.318 INFO [stderr]    |
Dec 12 01:50:50.318 INFO [stderr] 38 | pub fn display(node_list: NodeList) {
Dec 12 01:50:50.318 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:50:50.318 INFO [stderr]    |
Dec 12 01:50:50.318 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 01:50:50.318 INFO [stderr] 
Dec 12 01:50:50.318 INFO [stderr] warning: function is never used: `display2`
Dec 12 01:50:50.318 INFO [stderr]   --> src/node.rs:61:1
Dec 12 01:50:50.318 INFO [stderr]    |
Dec 12 01:50:50.318 INFO [stderr] 61 | / pub fn display2(
Dec 12 01:50:50.318 INFO [stderr] 62 | |     node_list: &NodeList, 
Dec 12 01:50:50.318 INFO [stderr] 63 | |     n: usize
Dec 12 01:50:50.318 INFO [stderr] 64 | | ) {
Dec 12 01:50:50.318 INFO [stderr] ...  |
Dec 12 01:50:50.318 INFO [stderr] 84 | |     }
Dec 12 01:50:50.318 INFO [stderr] 85 | | }
Dec 12 01:50:50.318 INFO [stderr]    | |_^
Dec 12 01:50:50.318 INFO [stderr] 
Dec 12 01:50:50.328 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.20s
Dec 12 01:50:50.330 INFO [stderr] su: No module specific data is present
Dec 12 01:50:50.615 INFO running `"docker" "inspect" "62cfbc906416b33574ce8c0b65b5ada0f1bd130690556ed23c9afc19b37d081b"`
Dec 12 01:50:50.734 INFO running `"docker" "rm" "-f" "62cfbc906416b33574ce8c0b65b5ada0f1bd130690556ed23c9afc19b37d081b"`
Dec 12 01:50:50.824 INFO [stdout] 62cfbc906416b33574ce8c0b65b5ada0f1bd130690556ed23c9afc19b37d081b