Dec 05 08:10:11.553 INFO checking riquid-0.0.1 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 08:10:11.553 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 05 08:10:11.749 INFO [stdout] 458c27afba5fe09323560f8ff65dbf05d74d7ece0860695c9b3209837c321a91
Dec 05 08:10:11.779 INFO running `"docker" "start" "-a" "458c27afba5fe09323560f8ff65dbf05d74d7ece0860695c9b3209837c321a91"`
Dec 05 08:10:12.303 INFO [stderr] usermod: no changes
Dec 05 08:10:12.407 INFO [stderr]     Checking riquid v0.0.1 (/source)
Dec 05 08:10:13.489 INFO [stderr] warning: struct is never constructed: `Scanner`
Dec 05 08:10:13.489 INFO [stderr]  --> src/scanner.rs:4:1
Dec 05 08:10:13.489 INFO [stderr]   |
Dec 05 08:10:13.489 INFO [stderr] 4 | pub struct Scanner<'t> {
Dec 05 08:10:13.489 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr]   |
Dec 05 08:10:13.490 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `new`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:11:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 11 |     pub fn new<'a>(source: &'a str) -> Scanner<'a> {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `position`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:19:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 19 |     pub fn position(&self) -> usize {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `is_eos`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:23:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 23 |     pub fn is_eos(&self) -> bool {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `skip`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:27:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 27 |     pub fn skip(&self, n: usize) {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `rest`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:32:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 32 |     pub fn rest(&self) -> Option<&str> {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `get_char`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:37:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 37 |     pub fn get_char(&self) -> Option<&str> {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `scan`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:47:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 47 |     pub fn scan(&self, pattern: &::regex::Regex) -> Option<&str> {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `get_match`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:56:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 56 |     fn get_match<'a>(&'a self, source: &'a str, captures: &::regex::Captures) -> Option<&str> {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `leading_chars`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:69:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 69 |     fn leading_chars(&self, string: &str) -> usize {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.490 INFO [stderr] warning: method is never used: `raw`
Dec 05 08:10:13.490 INFO [stderr]   --> src/scanner.rs:73:5
Dec 05 08:10:13.490 INFO [stderr]    |
Dec 05 08:10:13.490 INFO [stderr] 73 |     fn raw(&self) -> &str {
Dec 05 08:10:13.490 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:10:13.490 INFO [stderr] 
Dec 05 08:10:13.767 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.45s
Dec 05 08:10:13.767 INFO [stderr] su: No module specific data is present
Dec 05 08:10:14.105 INFO running `"docker" "inspect" "458c27afba5fe09323560f8ff65dbf05d74d7ece0860695c9b3209837c321a91"`
Dec 05 08:10:14.285 INFO running `"docker" "rm" "-f" "458c27afba5fe09323560f8ff65dbf05d74d7ece0860695c9b3209837c321a91"`
Dec 05 08:10:14.418 INFO [stdout] 458c27afba5fe09323560f8ff65dbf05d74d7ece0860695c9b3209837c321a91