Oct 12 12:05:05.895 INFO checking tkyk0317/rcc against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 12:05:05.897 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-3/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 12 12:05:06.404 INFO blam! 7847fed4df09db2ec66c123d78a2f89a90b344d32ddbb4850c2f3bb94d4c17e0
Oct 12 12:05:06.405 INFO running `"docker" "start" "-a" "7847fed4df09db2ec66c123d78a2f89a90b344d32ddbb4850c2f3bb94d4c17e0"`
Oct 12 12:05:07.516 INFO kablam! usermod: no changes
Oct 12 12:05:07.578 INFO kablam!     Checking rcc v0.1.0 (/source)
Oct 12 12:05:09.072 INFO kablam! warning: struct is never constructed: `StringData`
Oct 12 12:05:09.073 INFO kablam!  --> src/string.rs:2:1
Oct 12 12:05:09.074 INFO kablam!   |
Oct 12 12:05:09.075 INFO kablam! 2 | pub struct StringData {
Oct 12 12:05:09.075 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Oct 12 12:05:09.076 INFO kablam!   |
Oct 12 12:05:09.076 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 12:05:09.077 INFO kablam! 
Oct 12 12:05:09.077 INFO kablam! warning: method is never used: `new`
Oct 12 12:05:09.078 INFO kablam!   --> src/string.rs:10:5
Oct 12 12:05:09.078 INFO kablam!    |
Oct 12 12:05:09.079 INFO kablam! 10 |     pub fn new() -> StringData {
Oct 12 12:05:09.079 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 12:05:09.080 INFO kablam! 
Oct 12 12:05:09.080 INFO kablam! warning: method is never used: `push`
Oct 12 12:05:09.081 INFO kablam!   --> src/string.rs:18:5
Oct 12 12:05:09.081 INFO kablam!    |
Oct 12 12:05:09.081 INFO kablam! 18 |     pub fn push(&mut self, c: char) {
Oct 12 12:05:09.081 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 12:05:09.081 INFO kablam! 
Oct 12 12:05:09.081 INFO kablam! warning: method is never used: `search`
Oct 12 12:05:09.081 INFO kablam!   --> src/symbol.rs:31:5
Oct 12 12:05:09.081 INFO kablam!    |
Oct 12 12:05:09.081 INFO kablam! 31 |     pub fn search(&self, k: &String) -> Option<String> {
Oct 12 12:05:09.081 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 12:05:09.081 INFO kablam! 
Oct 12 12:05:09.894 INFO kablam! warning: method is never used: `search`
Oct 12 12:05:09.894 INFO kablam!   --> src/symbol.rs:31:5
Oct 12 12:05:09.894 INFO kablam!    |
Oct 12 12:05:09.894 INFO kablam! 31 |     pub fn search(&self, k: &String) -> Option<String> {
Oct 12 12:05:09.894 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 12:05:09.894 INFO kablam!    |
Oct 12 12:05:09.894 INFO kablam!    = note: #[warn(dead_code)] on by default
Oct 12 12:05:09.894 INFO kablam! 
Oct 12 12:05:10.013 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.46s
Oct 12 12:05:10.016 INFO kablam! su: No module specific data is present
Oct 12 12:05:11.384 INFO running `"docker" "rm" "-f" "7847fed4df09db2ec66c123d78a2f89a90b344d32ddbb4850c2f3bb94d4c17e0"`
Oct 12 12:05:11.757 INFO blam! 7847fed4df09db2ec66c123d78a2f89a90b344d32ddbb4850c2f3bb94d4c17e0