[INFO] fetching crate rflex 0.8.0...
[INFO] checking rflex-0.8.0 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate rflex 0.8.0 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate rflex 0.8.0 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rflex 0.8.0
[INFO] finished tweaking crates.io crate rflex 0.8.0
[INFO] tweaked toml for crates.io crate rflex 0.8.0 written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate crates.io crate rflex 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backtrace v0.3.55
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded object v0.22.0
[INFO] [stderr]   Downloaded addr2line v0.14.0
[INFO] [stderr]   Downloaded liquid-compiler v0.17.1
[INFO] [stderr]   Downloaded liquid-value v0.17.1
[INFO] [stderr]   Downloaded liquid-interpreter v0.17.1
[INFO] [stderr]   Downloaded liquid-error v0.16.1
[INFO] [stderr]   Downloaded liquid v0.17.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 330e1080cba50c363778dbd60a59f90e637f152d7e330bc5e21bd87679d8d1b5
[INFO] running `Command { std: "docker" "start" "-a" "330e1080cba50c363778dbd60a59f90e637f152d7e330bc5e21bd87679d8d1b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "330e1080cba50c363778dbd60a59f90e637f152d7e330bc5e21bd87679d8d1b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "330e1080cba50c363778dbd60a59f90e637f152d7e330bc5e21bd87679d8d1b5", kill_on_drop: false }`
[INFO] [stdout] 330e1080cba50c363778dbd60a59f90e637f152d7e330bc5e21bd87679d8d1b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 419715288e171c0ac273714a5a62a8cd6c9ada4979bc78a44e22a98bc460c75c
[INFO] running `Command { std: "docker" "start" "-a" "419715288e171c0ac273714a5a62a8cd6c9ada4979bc78a44e22a98bc460c75c", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling syn v1.0.52
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]     Checking liquid-error v0.16.1
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking gimli v0.23.0
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[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[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 v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `set_end`
[INFO] [stdout]   --> src/charclasses.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn set_end(&mut self, end: usize) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_start`
[INFO] [stdout]   --> src/charclasses.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn set_start(&mut self, start: usize) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_char`
[INFO] [stdout]    --> src/charclasses.rs:155:12
[INFO] [stdout]     |
[INFO] [stdout] 155 |     pub fn add_char(&mut self, c: usize) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_max_char_code`
[INFO] [stdout]    --> src/charclasses.rs:396:12
[INFO] [stdout]     |
[INFO] [stdout] 396 |     pub fn get_max_char_code(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_max_char_code`
[INFO] [stdout]    --> src/charclasses.rs:400:12
[INFO] [stdout]     |
[INFO] [stdout] 400 |     pub fn set_max_char_code(&mut self, max_char_code: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string_i`
[INFO] [stdout]    --> src/charclasses.rs:511:12
[INFO] [stdout]     |
[INFO] [stdout] 511 |     pub fn to_string_i(&self, index: usize) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_dot`
[INFO] [stdout]    --> src/dfa.rs:480:12
[INFO] [stdout]     |
[INFO] [stdout] 480 |     pub fn write_dot(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump`
[INFO] [stdout]    --> src/dfa.rs:503:12
[INFO] [stdout]     |
[INFO] [stdout] 503 |     pub fn dump(&self) -> String {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_epsilon`
[INFO] [stdout]    --> src/nfa.rs:528:8
[INFO] [stdout]     |
[INFO] [stdout] 528 |     fn dump_epsilon(&self, epsilon: Vec<Option<Rc<RefCell<FixedBitSet>>>>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/nfa.rs:527:12
[INFO] [stdout]     |
[INFO] [stdout] 527 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_fixedbit`
[INFO] [stdout]    --> src/nfa.rs:542:8
[INFO] [stdout]     |
[INFO] [stdout] 542 |     fn dump_fixedbit(&self, v: &FixedBitSet) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/nfa.rs:541:12
[INFO] [stdout]     |
[INFO] [stdout] 541 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_fixedbit_str`
[INFO] [stdout]    --> src/nfa.rs:546:8
[INFO] [stdout]     |
[INFO] [stdout] 546 |     fn dump_fixedbit_str(&self, v: &FixedBitSet) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_dot`
[INFO] [stdout]    --> src/nfa.rs:559:12
[INFO] [stdout]     |
[INFO] [stdout] 559 |     pub fn write_dot(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_table`
[INFO] [stdout]    --> src/nfa.rs:594:12
[INFO] [stdout]     |
[INFO] [stdout] 594 |     pub fn dump_table(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Name`
[INFO] [stdout]   --> src/scanner.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Name(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_char_classes`
[INFO] [stdout]    --> src/scanner.rs:354:12
[INFO] [stdout]     |
[INFO] [stdout] 354 |     pub fn get_char_classes(&self) -> CharClasses {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_regex`
[INFO] [stdout]    --> src/scanner.rs:584:4
[INFO] [stdout]     |
[INFO] [stdout] 584 | fn parse_regex(line_num: usize, line: &String) -> Result<(IR, String), TranslateError> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `num`
[INFO] [stdout]    --> src/scanner.rs:681:12
[INFO] [stdout]     |
[INFO] [stdout] 681 |     pub fn num(num: i32) -> Action {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:12:30
[INFO] [stdout]    |
[INFO] [stdout] 12 |                 for cause in failure::Fail::iter_chain(&e) {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^ help: use `dyn`: `<dyn failure::Fail>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_end`
[INFO] [stdout]   --> src/charclasses.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn set_end(&mut self, end: usize) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_start`
[INFO] [stdout]   --> src/charclasses.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn set_start(&mut self, start: usize) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_max_char_code`
[INFO] [stdout]    --> src/charclasses.rs:396:12
[INFO] [stdout]     |
[INFO] [stdout] 396 |     pub fn get_max_char_code(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_max_char_code`
[INFO] [stdout]    --> src/charclasses.rs:400:12
[INFO] [stdout]     |
[INFO] [stdout] 400 |     pub fn set_max_char_code(&mut self, max_char_code: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump`
[INFO] [stdout]    --> src/dfa.rs:503:12
[INFO] [stdout]     |
[INFO] [stdout] 503 |     pub fn dump(&self) -> String {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_epsilon`
[INFO] [stdout]    --> src/nfa.rs:528:8
[INFO] [stdout]     |
[INFO] [stdout] 528 |     fn dump_epsilon(&self, epsilon: Vec<Option<Rc<RefCell<FixedBitSet>>>>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/nfa.rs:527:12
[INFO] [stdout]     |
[INFO] [stdout] 527 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_fixedbit`
[INFO] [stdout]    --> src/nfa.rs:542:8
[INFO] [stdout]     |
[INFO] [stdout] 542 |     fn dump_fixedbit(&self, v: &FixedBitSet) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/nfa.rs:541:12
[INFO] [stdout]     |
[INFO] [stdout] 541 |     #[warn(dead_code)]
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_fixedbit_str`
[INFO] [stdout]    --> src/nfa.rs:546:8
[INFO] [stdout]     |
[INFO] [stdout] 546 |     fn dump_fixedbit_str(&self, v: &FixedBitSet) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_table`
[INFO] [stdout]    --> src/nfa.rs:594:12
[INFO] [stdout]     |
[INFO] [stdout] 594 |     pub fn dump_table(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Name`
[INFO] [stdout]   --> src/scanner.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     Name(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_char_classes`
[INFO] [stdout]    --> src/scanner.rs:354:12
[INFO] [stdout]     |
[INFO] [stdout] 354 |     pub fn get_char_classes(&self) -> CharClasses {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:12:30
[INFO] [stdout]    |
[INFO] [stdout] 12 |                 for cause in failure::Fail::iter_chain(&e) {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^ help: use `dyn`: `<dyn failure::Fail>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.33s
[INFO] running `Command { std: "docker" "inspect" "419715288e171c0ac273714a5a62a8cd6c9ada4979bc78a44e22a98bc460c75c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "419715288e171c0ac273714a5a62a8cd6c9ada4979bc78a44e22a98bc460c75c", kill_on_drop: false }`
[INFO] [stdout] 419715288e171c0ac273714a5a62a8cd6c9ada4979bc78a44e22a98bc460c75c