Dec 17 13:55:36.937 INFO checking terakun/syntactic_monoid against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 13:55:36.937 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 13:55:37.480 INFO [stdout] 8e5d15fe68d587478cb980a7e89dd487046812dd310b8202a7ed84439cf63612
Dec 17 13:55:37.482 INFO running `"docker" "start" "-a" "8e5d15fe68d587478cb980a7e89dd487046812dd310b8202a7ed84439cf63612"`
Dec 17 13:55:38.874 INFO [stderr]     Checking syntactic_monoid v0.1.0 (/opt/crater/workdir)
Dec 17 13:55:39.008 INFO [stderr] warning: unused import: `regex::RegularExpression`
Dec 17 13:55:39.008 INFO [stderr]  --> src/syntactic_monoid.rs:2:5
Dec 17 13:55:39.008 INFO [stderr]   |
Dec 17 13:55:39.008 INFO [stderr] 2 | use regex::RegularExpression;
Dec 17 13:55:39.008 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.008 INFO [stderr]   |
Dec 17 13:55:39.008 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 13:55:39.008 INFO [stderr] 
Dec 17 13:55:39.024 INFO [stderr] warning: unused import: `regex::RegularExpression`
Dec 17 13:55:39.024 INFO [stderr]  --> src/syntactic_monoid.rs:2:5
Dec 17 13:55:39.024 INFO [stderr]   |
Dec 17 13:55:39.024 INFO [stderr] 2 | use regex::RegularExpression;
Dec 17 13:55:39.024 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.024 INFO [stderr]   |
Dec 17 13:55:39.024 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 13:55:39.024 INFO [stderr] 
Dec 17 13:55:39.388 INFO [stderr] warning: variant is never constructed: `Empty`
Dec 17 13:55:39.388 INFO [stderr]  --> src/regex.rs:3:5
Dec 17 13:55:39.388 INFO [stderr]   |
Dec 17 13:55:39.388 INFO [stderr] 3 |     Empty,
Dec 17 13:55:39.388 INFO [stderr]   |     ^^^^^
Dec 17 13:55:39.388 INFO [stderr]   |
Dec 17 13:55:39.388 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 13:55:39.388 INFO [stderr] 
Dec 17 13:55:39.388 INFO [stderr] warning: variant is never constructed: `Epsilon`
Dec 17 13:55:39.388 INFO [stderr]  --> src/regex.rs:4:5
Dec 17 13:55:39.388 INFO [stderr]   |
Dec 17 13:55:39.388 INFO [stderr] 4 |     Epsilon,
Dec 17 13:55:39.388 INFO [stderr]   |     ^^^^^^^
Dec 17 13:55:39.388 INFO [stderr] 
Dec 17 13:55:39.388 INFO [stderr] warning: method is never used: `print_trans`
Dec 17 13:55:39.388 INFO [stderr]   --> src/nfa.rs:32:5
Dec 17 13:55:39.388 INFO [stderr]    |
Dec 17 13:55:39.388 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 17 13:55:39.388 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.388 INFO [stderr] 
Dec 17 13:55:39.388 INFO [stderr] warning: method is never used: `to_graphviz`
Dec 17 13:55:39.388 INFO [stderr]    --> src/nfa.rs:253:5
Dec 17 13:55:39.388 INFO [stderr]     |
Dec 17 13:55:39.388 INFO [stderr] 253 |     pub fn to_graphviz(&self) {
Dec 17 13:55:39.388 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.388 INFO [stderr] 
Dec 17 13:55:39.388 INFO [stderr] warning: method is never used: `set_trans`
Dec 17 13:55:39.388 INFO [stderr]   --> src/dfa.rs:23:5
Dec 17 13:55:39.388 INFO [stderr]    |
Dec 17 13:55:39.388 INFO [stderr] 23 |     pub fn set_trans(&mut self, transition: &Vec<i32>) {
Dec 17 13:55:39.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.389 INFO [stderr] 
Dec 17 13:55:39.389 INFO [stderr] warning: method is never used: `add_trans`
Dec 17 13:55:39.389 INFO [stderr]   --> src/dfa.rs:29:5
Dec 17 13:55:39.389 INFO [stderr]    |
Dec 17 13:55:39.389 INFO [stderr] 29 |     pub fn add_trans(&mut self, id: i32, ch: usize) {
Dec 17 13:55:39.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.389 INFO [stderr] 
Dec 17 13:55:39.389 INFO [stderr] warning: method is never used: `print_trans`
Dec 17 13:55:39.389 INFO [stderr]   --> src/dfa.rs:32:5
Dec 17 13:55:39.389 INFO [stderr]    |
Dec 17 13:55:39.389 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 17 13:55:39.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.389 INFO [stderr] 
Dec 17 13:55:39.389 INFO [stderr] warning: method is never used: `print_subset`
Dec 17 13:55:39.389 INFO [stderr]   --> src/dfa.rs:71:5
Dec 17 13:55:39.389 INFO [stderr]    |
Dec 17 13:55:39.389 INFO [stderr] 71 |     pub fn print_subset(subset: &SubSet) {
Dec 17 13:55:39.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.389 INFO [stderr] 
Dec 17 13:55:39.389 INFO [stderr] warning: method is never used: `accept`
Dec 17 13:55:39.389 INFO [stderr]    --> src/dfa.rs:227:5
Dec 17 13:55:39.389 INFO [stderr]     |
Dec 17 13:55:39.389 INFO [stderr] 227 |     pub fn accept(&self, input: &Vec<u8>) -> bool {
Dec 17 13:55:39.389 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.389 INFO [stderr] 
Dec 17 13:55:39.389 INFO [stderr] warning: field is never used: `alphabets`
Dec 17 13:55:39.389 INFO [stderr]   --> src/syntactic_monoid.rs:75:5
Dec 17 13:55:39.389 INFO [stderr]    |
Dec 17 13:55:39.389 INFO [stderr] 75 |     alphabets: BitSet,
Dec 17 13:55:39.389 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.389 INFO [stderr] 
Dec 17 13:55:39.453 INFO [stderr] warning: variant is never constructed: `Empty`
Dec 17 13:55:39.453 INFO [stderr]  --> src/regex.rs:3:5
Dec 17 13:55:39.453 INFO [stderr]   |
Dec 17 13:55:39.453 INFO [stderr] 3 |     Empty,
Dec 17 13:55:39.453 INFO [stderr]   |     ^^^^^
Dec 17 13:55:39.453 INFO [stderr]   |
Dec 17 13:55:39.453 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 13:55:39.453 INFO [stderr] 
Dec 17 13:55:39.453 INFO [stderr] warning: variant is never constructed: `Epsilon`
Dec 17 13:55:39.453 INFO [stderr]  --> src/regex.rs:4:5
Dec 17 13:55:39.453 INFO [stderr]   |
Dec 17 13:55:39.453 INFO [stderr] 4 |     Epsilon,
Dec 17 13:55:39.453 INFO [stderr]   |     ^^^^^^^
Dec 17 13:55:39.453 INFO [stderr] 
Dec 17 13:55:39.453 INFO [stderr] warning: method is never used: `print_trans`
Dec 17 13:55:39.453 INFO [stderr]   --> src/nfa.rs:32:5
Dec 17 13:55:39.453 INFO [stderr]    |
Dec 17 13:55:39.453 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 17 13:55:39.453 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.453 INFO [stderr] 
Dec 17 13:55:39.453 INFO [stderr] warning: method is never used: `to_graphviz`
Dec 17 13:55:39.453 INFO [stderr]    --> src/nfa.rs:253:5
Dec 17 13:55:39.453 INFO [stderr]     |
Dec 17 13:55:39.453 INFO [stderr] 253 |     pub fn to_graphviz(&self) {
Dec 17 13:55:39.453 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.453 INFO [stderr] 
Dec 17 13:55:39.453 INFO [stderr] warning: method is never used: `set_trans`
Dec 17 13:55:39.453 INFO [stderr]   --> src/dfa.rs:23:5
Dec 17 13:55:39.453 INFO [stderr]    |
Dec 17 13:55:39.453 INFO [stderr] 23 |     pub fn set_trans(&mut self, transition: &Vec<i32>) {
Dec 17 13:55:39.453 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.454 INFO [stderr] 
Dec 17 13:55:39.454 INFO [stderr] warning: method is never used: `add_trans`
Dec 17 13:55:39.454 INFO [stderr]   --> src/dfa.rs:29:5
Dec 17 13:55:39.454 INFO [stderr]    |
Dec 17 13:55:39.454 INFO [stderr] 29 |     pub fn add_trans(&mut self, id: i32, ch: usize) {
Dec 17 13:55:39.454 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.454 INFO [stderr] 
Dec 17 13:55:39.454 INFO [stderr] warning: method is never used: `print_trans`
Dec 17 13:55:39.454 INFO [stderr]   --> src/dfa.rs:32:5
Dec 17 13:55:39.454 INFO [stderr]    |
Dec 17 13:55:39.454 INFO [stderr] 32 |     pub fn print_trans(&self) {
Dec 17 13:55:39.454 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.454 INFO [stderr] 
Dec 17 13:55:39.454 INFO [stderr] warning: method is never used: `print_subset`
Dec 17 13:55:39.454 INFO [stderr]   --> src/dfa.rs:71:5
Dec 17 13:55:39.454 INFO [stderr]    |
Dec 17 13:55:39.454 INFO [stderr] 71 |     pub fn print_subset(subset: &SubSet) {
Dec 17 13:55:39.454 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.454 INFO [stderr] 
Dec 17 13:55:39.454 INFO [stderr] warning: method is never used: `accept`
Dec 17 13:55:39.454 INFO [stderr]    --> src/dfa.rs:227:5
Dec 17 13:55:39.454 INFO [stderr]     |
Dec 17 13:55:39.454 INFO [stderr] 227 |     pub fn accept(&self, input: &Vec<u8>) -> bool {
Dec 17 13:55:39.454 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.454 INFO [stderr] 
Dec 17 13:55:39.454 INFO [stderr] warning: field is never used: `alphabets`
Dec 17 13:55:39.454 INFO [stderr]   --> src/syntactic_monoid.rs:75:5
Dec 17 13:55:39.454 INFO [stderr]    |
Dec 17 13:55:39.454 INFO [stderr] 75 |     alphabets: BitSet,
Dec 17 13:55:39.454 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 17 13:55:39.459 INFO [stderr] 
Dec 17 13:55:39.492 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Dec 17 13:55:40.038 INFO running `"docker" "inspect" "8e5d15fe68d587478cb980a7e89dd487046812dd310b8202a7ed84439cf63612"`
Dec 17 13:55:40.342 INFO running `"docker" "rm" "-f" "8e5d15fe68d587478cb980a7e89dd487046812dd310b8202a7ed84439cf63612"`
Dec 17 13:55:40.591 INFO [stdout] 8e5d15fe68d587478cb980a7e89dd487046812dd310b8202a7ed84439cf63612