[INFO] fetching crate rflex 0.4.0...
[INFO] extracting crate rflex 0.4.0 into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/rflex/0.4.0
[INFO] extracting crate rflex 0.4.0 into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/rflex/0.4.0
[INFO] validating manifest of rflex-0.4.0 on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rflex-0.4.0 on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rflex-0.4.0
[INFO] finished frobbing rflex-0.4.0
[INFO] frobbed toml for rflex-0.4.0 written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/rflex/0.4.0/Cargo.toml
[INFO] started frobbing rflex-0.4.0
[INFO] finished frobbing rflex-0.4.0
[INFO] frobbed toml for rflex-0.4.0 written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/rflex/0.4.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rflex-0.4.0 against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-3/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/rflex/0.4.0:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bc62757d2fb381d7113a70932af6328386619e4be81e9ab125e40b729cf83239
[INFO] running `"docker" "start" "-a" "bc62757d2fb381d7113a70932af6328386619e4be81e9ab125e40b729cf83239"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Checking liquid-error v0.16.1
[INFO] [stderr]     Checking liquid-value v0.17.1
[INFO] [stderr]     Checking liquid-interpreter v0.17.1
[INFO] [stderr]     Checking liquid-compiler v0.17.1
[INFO] [stderr]     Checking liquid v0.17.1
[INFO] [stderr]     Checking rflex v0.4.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `Name`
[INFO] [stderr]   --> src/scanner.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Name(String), // expansion of the name definition
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PatternParseError`
[INFO] [stderr]   --> src/scanner.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     PatternParseError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_char_classes`
[INFO] [stderr]    --> src/scanner.rs:280:5
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn get_char_classes(&self) -> CharClasses {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_regex`
[INFO] [stderr]    --> src/scanner.rs:484:1
[INFO] [stderr]     |
[INFO] [stderr] 484 | fn parse_regex(line_num: usize, line: &String) -> Result<(IR, String), TranslateError> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CharClassSyntax`
[INFO] [stderr]    --> src/scanner.rs:559:5
[INFO] [stderr]     |
[INFO] [stderr] 559 |     CharClassSyntax,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]    --> src/scanner.rs:560:5
[INFO] [stderr]     |
[INFO] [stderr] 560 |     None,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `num`
[INFO] [stderr]    --> src/scanner.rs:581:5
[INFO] [stderr]     |
[INFO] [stderr] 581 |     pub fn num(num: i32) -> Action {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_epsilon`
[INFO] [stderr]    --> src/nfa.rs:512:5
[INFO] [stderr]     |
[INFO] [stderr] 512 |     fn dump_epsilon(&self, epsilon: Vec<Option<Rc<RefCell<FixedBitSet>>>>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/nfa.rs:511:12
[INFO] [stderr]     |
[INFO] [stderr] 511 |     #[warn(dead_code)]
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_fixedbit`
[INFO] [stderr]    --> src/nfa.rs:526:5
[INFO] [stderr]     |
[INFO] [stderr] 526 |     fn dump_fixedbit(&self, v: &FixedBitSet) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/nfa.rs:525:12
[INFO] [stderr]     |
[INFO] [stderr] 525 |     #[warn(dead_code)]
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_fixedbit_str`
[INFO] [stderr]    --> src/nfa.rs:530:5
[INFO] [stderr]     |
[INFO] [stderr] 530 |     fn dump_fixedbit_str(&self, v: &FixedBitSet) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_dot`
[INFO] [stderr]    --> src/nfa.rs:543:5
[INFO] [stderr]     |
[INFO] [stderr] 543 |     pub fn write_dot(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_table`
[INFO] [stderr]    --> src/nfa.rs:578:5
[INFO] [stderr]     |
[INFO] [stderr] 578 |     pub fn dump_table(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_dot`
[INFO] [stderr]    --> src/dfa.rs:461:5
[INFO] [stderr]     |
[INFO] [stderr] 461 |     pub fn write_dot(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump`
[INFO] [stderr]    --> src/dfa.rs:484:5
[INFO] [stderr]     |
[INFO] [stderr] 484 |     pub fn dump(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_end`
[INFO] [stderr]   --> src/charclasses.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn set_end(&mut self, end: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_start`
[INFO] [stderr]   --> src/charclasses.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn set_start(&mut self, start: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_char`
[INFO] [stderr]    --> src/charclasses.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn add_char(&mut self, c: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_max_char_code`
[INFO] [stderr]    --> src/charclasses.rs:395:5
[INFO] [stderr]     |
[INFO] [stderr] 395 |     pub fn get_max_char_code(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_max_char_code`
[INFO] [stderr]    --> src/charclasses.rs:399:5
[INFO] [stderr]     |
[INFO] [stderr] 399 |     pub fn set_max_char_code(&mut self, max_char_code: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string_i`
[INFO] [stderr]    --> src/charclasses.rs:510:5
[INFO] [stderr]     |
[INFO] [stderr] 510 |     pub fn to_string_i(&self, index: usize) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Name`
[INFO] [stderr]   --> src/scanner.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Name(String), // expansion of the name definition
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PatternParseError`
[INFO] [stderr]   --> src/scanner.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     PatternParseError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_char_classes`
[INFO] [stderr]    --> src/scanner.rs:280:5
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn get_char_classes(&self) -> CharClasses {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CharClassSyntax`
[INFO] [stderr]    --> src/scanner.rs:559:5
[INFO] [stderr]     |
[INFO] [stderr] 559 |     CharClassSyntax,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]    --> src/scanner.rs:560:5
[INFO] [stderr]     |
[INFO] [stderr] 560 |     None,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_epsilon`
[INFO] [stderr]    --> src/nfa.rs:512:5
[INFO] [stderr]     |
[INFO] [stderr] 512 |     fn dump_epsilon(&self, epsilon: Vec<Option<Rc<RefCell<FixedBitSet>>>>) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/nfa.rs:511:12
[INFO] [stderr]     |
[INFO] [stderr] 511 |     #[warn(dead_code)]
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_fixedbit`
[INFO] [stderr]    --> src/nfa.rs:526:5
[INFO] [stderr]     |
[INFO] [stderr] 526 |     fn dump_fixedbit(&self, v: &FixedBitSet) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/nfa.rs:525:12
[INFO] [stderr]     |
[INFO] [stderr] 525 |     #[warn(dead_code)]
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_fixedbit_str`
[INFO] [stderr]    --> src/nfa.rs:530:5
[INFO] [stderr]     |
[INFO] [stderr] 530 |     fn dump_fixedbit_str(&self, v: &FixedBitSet) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump_table`
[INFO] [stderr]    --> src/nfa.rs:578:5
[INFO] [stderr]     |
[INFO] [stderr] 578 |     pub fn dump_table(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dump`
[INFO] [stderr]    --> src/dfa.rs:484:5
[INFO] [stderr]     |
[INFO] [stderr] 484 |     pub fn dump(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_end`
[INFO] [stderr]   --> src/charclasses.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn set_end(&mut self, end: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_start`
[INFO] [stderr]   --> src/charclasses.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn set_start(&mut self, start: usize) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_max_char_code`
[INFO] [stderr]    --> src/charclasses.rs:395:5
[INFO] [stderr]     |
[INFO] [stderr] 395 |     pub fn get_max_char_code(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_max_char_code`
[INFO] [stderr]    --> src/charclasses.rs:399:5
[INFO] [stderr]     |
[INFO] [stderr] 399 |     pub fn set_max_char_code(&mut self, max_char_code: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.00s
[INFO] running `"docker" "inspect" "bc62757d2fb381d7113a70932af6328386619e4be81e9ab125e40b729cf83239"`
[INFO] running `"docker" "rm" "-f" "bc62757d2fb381d7113a70932af6328386619e4be81e9ab125e40b729cf83239"`
[INFO] [stdout] bc62757d2fb381d7113a70932af6328386619e4be81e9ab125e40b729cf83239