Dec 19 07:24:39.825 INFO checking terakun/syntactic_monoid against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 07:24:39.825 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/terakun/syntactic_monoid:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 07:24:40.372 INFO [stdout] 6e7557ff455330c2724332bf4698176f83ff02eaef924f194aef30dc2f9b09d0
Dec 19 07:24:40.378 INFO running `"docker" "start" "-a" "6e7557ff455330c2724332bf4698176f83ff02eaef924f194aef30dc2f9b09d0"`
Dec 19 07:24:41.665 INFO [stderr]     Checking bit-set v0.4.0
Dec 19 07:24:42.204 INFO [stderr]     Checking syntactic_monoid v0.1.0 (/opt/crater/workdir)
Dec 19 07:24:42.468 INFO [stderr] warning: unused import: `regex::RegularExpression`
Dec 19 07:24:42.468 INFO [stderr]  --> src/syntactic_monoid.rs:2:5
Dec 19 07:24:42.468 INFO [stderr]   |
Dec 19 07:24:42.468 INFO [stderr] 2 | use regex::RegularExpression;
Dec 19 07:24:42.468 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.468 INFO [stderr]   |
Dec 19 07:24:42.468 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 07:24:42.468 INFO [stderr] 
Dec 19 07:24:42.486 INFO [stderr] warning: unused import: `regex::RegularExpression`
Dec 19 07:24:42.486 INFO [stderr]  --> src/syntactic_monoid.rs:2:5
Dec 19 07:24:42.486 INFO [stderr]   |
Dec 19 07:24:42.486 INFO [stderr] 2 | use regex::RegularExpression;
Dec 19 07:24:42.486 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.486 INFO [stderr]   |
Dec 19 07:24:42.486 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 07:24:42.486 INFO [stderr] 
Dec 19 07:24:42.853 INFO [stderr] warning: variant is never constructed: `Empty`
Dec 19 07:24:42.853 INFO [stderr]  --> src/regex.rs:3:5
Dec 19 07:24:42.853 INFO [stderr]   |
Dec 19 07:24:42.853 INFO [stderr] 3 |     Empty,
Dec 19 07:24:42.853 INFO [stderr]   |     ^^^^^
Dec 19 07:24:42.853 INFO [stderr]   |
Dec 19 07:24:42.853 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 07:24:42.853 INFO [stderr] 
Dec 19 07:24:42.853 INFO [stderr] warning: variant is never constructed: `Epsilon`
Dec 19 07:24:42.853 INFO [stderr]  --> src/regex.rs:4:5
Dec 19 07:24:42.853 INFO [stderr]   |
Dec 19 07:24:42.853 INFO [stderr] 4 |     Epsilon,
Dec 19 07:24:42.853 INFO [stderr]   |     ^^^^^^^
Dec 19 07:24:42.853 INFO [stderr] 
Dec 19 07:24:42.853 INFO [stderr] warning: method is never used: `print_trans`
Dec 19 07:24:42.853 INFO [stderr]   --> src/nfa.rs:32:5
Dec 19 07:24:42.853 INFO [stderr]    |
Dec 19 07:24:42.853 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 19 07:24:42.853 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.853 INFO [stderr] 
Dec 19 07:24:42.853 INFO [stderr] warning: method is never used: `to_graphviz`
Dec 19 07:24:42.853 INFO [stderr]    --> src/nfa.rs:253:5
Dec 19 07:24:42.853 INFO [stderr]     |
Dec 19 07:24:42.853 INFO [stderr] 253 |     pub fn to_graphviz(&self) {
Dec 19 07:24:42.853 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.853 INFO [stderr] 
Dec 19 07:24:42.853 INFO [stderr] warning: method is never used: `set_trans`
Dec 19 07:24:42.853 INFO [stderr]   --> src/dfa.rs:23:5
Dec 19 07:24:42.853 INFO [stderr]    |
Dec 19 07:24:42.853 INFO [stderr] 23 |     pub fn set_trans(&mut self, transition: &Vec<i32>) {
Dec 19 07:24:42.853 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.853 INFO [stderr] 
Dec 19 07:24:42.853 INFO [stderr] warning: method is never used: `add_trans`
Dec 19 07:24:42.853 INFO [stderr]   --> src/dfa.rs:29:5
Dec 19 07:24:42.853 INFO [stderr]    |
Dec 19 07:24:42.853 INFO [stderr] 29 |     pub fn add_trans(&mut self, id: i32, ch: usize) {
Dec 19 07:24:42.853 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.853 INFO [stderr] 
Dec 19 07:24:42.856 INFO [stderr] warning: method is never used: `print_trans`
Dec 19 07:24:42.856 INFO [stderr]   --> src/dfa.rs:32:5
Dec 19 07:24:42.856 INFO [stderr]    |
Dec 19 07:24:42.856 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 19 07:24:42.856 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.856 INFO [stderr] 
Dec 19 07:24:42.856 INFO [stderr] warning: method is never used: `print_subset`
Dec 19 07:24:42.856 INFO [stderr]   --> src/dfa.rs:71:5
Dec 19 07:24:42.856 INFO [stderr]    |
Dec 19 07:24:42.856 INFO [stderr] 71 |     pub fn print_subset(subset: &SubSet) {
Dec 19 07:24:42.856 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.856 INFO [stderr] 
Dec 19 07:24:42.856 INFO [stderr] warning: method is never used: `accept`
Dec 19 07:24:42.856 INFO [stderr]    --> src/dfa.rs:227:5
Dec 19 07:24:42.856 INFO [stderr]     |
Dec 19 07:24:42.856 INFO [stderr] 227 |     pub fn accept(&self, input: &Vec<u8>) -> bool {
Dec 19 07:24:42.856 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.856 INFO [stderr] 
Dec 19 07:24:42.856 INFO [stderr] warning: field is never used: `alphabets`
Dec 19 07:24:42.856 INFO [stderr]   --> src/syntactic_monoid.rs:75:5
Dec 19 07:24:42.856 INFO [stderr]    |
Dec 19 07:24:42.856 INFO [stderr] 75 |     alphabets: BitSet,
Dec 19 07:24:42.856 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 07:24:42.856 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: variant is never constructed: `Empty`
Dec 19 07:24:43.008 INFO [stderr]  --> src/regex.rs:3:5
Dec 19 07:24:43.008 INFO [stderr]   |
Dec 19 07:24:43.008 INFO [stderr] 3 |     Empty,
Dec 19 07:24:43.008 INFO [stderr]   |     ^^^^^
Dec 19 07:24:43.008 INFO [stderr]   |
Dec 19 07:24:43.008 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: variant is never constructed: `Epsilon`
Dec 19 07:24:43.008 INFO [stderr]  --> src/regex.rs:4:5
Dec 19 07:24:43.008 INFO [stderr]   |
Dec 19 07:24:43.008 INFO [stderr] 4 |     Epsilon,
Dec 19 07:24:43.008 INFO [stderr]   |     ^^^^^^^
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: method is never used: `print_trans`
Dec 19 07:24:43.008 INFO [stderr]   --> src/nfa.rs:32:5
Dec 19 07:24:43.008 INFO [stderr]    |
Dec 19 07:24:43.008 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 19 07:24:43.008 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: method is never used: `to_graphviz`
Dec 19 07:24:43.008 INFO [stderr]    --> src/nfa.rs:253:5
Dec 19 07:24:43.008 INFO [stderr]     |
Dec 19 07:24:43.008 INFO [stderr] 253 |     pub fn to_graphviz(&self) {
Dec 19 07:24:43.008 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: method is never used: `set_trans`
Dec 19 07:24:43.008 INFO [stderr]   --> src/dfa.rs:23:5
Dec 19 07:24:43.008 INFO [stderr]    |
Dec 19 07:24:43.008 INFO [stderr] 23 |     pub fn set_trans(&mut self, transition: &Vec<i32>) {
Dec 19 07:24:43.008 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: method is never used: `add_trans`
Dec 19 07:24:43.008 INFO [stderr]   --> src/dfa.rs:29:5
Dec 19 07:24:43.008 INFO [stderr]    |
Dec 19 07:24:43.008 INFO [stderr] 29 |     pub fn add_trans(&mut self, id: i32, ch: usize) {
Dec 19 07:24:43.008 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.008 INFO [stderr] warning: method is never used: `print_trans`
Dec 19 07:24:43.008 INFO [stderr]   --> src/dfa.rs:32:5
Dec 19 07:24:43.008 INFO [stderr]    |
Dec 19 07:24:43.008 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 19 07:24:43.008 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.008 INFO [stderr] 
Dec 19 07:24:43.009 INFO [stderr] warning: method is never used: `print_subset`
Dec 19 07:24:43.009 INFO [stderr]   --> src/dfa.rs:71:5
Dec 19 07:24:43.009 INFO [stderr]    |
Dec 19 07:24:43.009 INFO [stderr] 71 |     pub fn print_subset(subset: &SubSet) {
Dec 19 07:24:43.009 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.009 INFO [stderr] 
Dec 19 07:24:43.009 INFO [stderr] warning: method is never used: `accept`
Dec 19 07:24:43.009 INFO [stderr]    --> src/dfa.rs:227:5
Dec 19 07:24:43.009 INFO [stderr]     |
Dec 19 07:24:43.009 INFO [stderr] 227 |     pub fn accept(&self, input: &Vec<u8>) -> bool {
Dec 19 07:24:43.009 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.009 INFO [stderr] 
Dec 19 07:24:43.009 INFO [stderr] warning: field is never used: `alphabets`
Dec 19 07:24:43.009 INFO [stderr]   --> src/syntactic_monoid.rs:75:5
Dec 19 07:24:43.009 INFO [stderr]    |
Dec 19 07:24:43.009 INFO [stderr] 75 |     alphabets: BitSet,
Dec 19 07:24:43.009 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 19 07:24:43.009 INFO [stderr] 
Dec 19 07:24:43.040 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
Dec 19 07:24:43.462 INFO running `"docker" "inspect" "6e7557ff455330c2724332bf4698176f83ff02eaef924f194aef30dc2f9b09d0"`
Dec 19 07:24:43.736 INFO running `"docker" "rm" "-f" "6e7557ff455330c2724332bf4698176f83ff02eaef924f194aef30dc2f9b09d0"`
Dec 19 07:24:44.036 INFO [stdout] 6e7557ff455330c2724332bf4698176f83ff02eaef924f194aef30dc2f9b09d0