[INFO] fetching crate regress 0.2.0...
[INFO] checking regress-0.2.0 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate regress 0.2.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate regress 0.2.0 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate regress 0.2.0
[INFO] finished tweaking crates.io crate regress 0.2.0
[INFO] tweaked toml for crates.io crate regress 0.2.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate regress 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt-derive v0.4.13
[INFO] [stderr]   Downloaded libc v0.2.79
[INFO] [stderr]   Downloaded syn v1.0.45
[INFO] [stderr]   Downloaded structopt v0.3.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e1a948e0a0cea0d43aba8d6e79cc8cfd1ac389a7f7a7cd06892e2a6ad65f1c5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9e1a948e0a0cea0d43aba8d6e79cc8cfd1ac389a7f7a7cd06892e2a6ad65f1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e1a948e0a0cea0d43aba8d6e79cc8cfd1ac389a7f7a7cd06892e2a6ad65f1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e1a948e0a0cea0d43aba8d6e79cc8cfd1ac389a7f7a7cd06892e2a6ad65f1c5", kill_on_drop: false }`
[INFO] [stdout] 9e1a948e0a0cea0d43aba8d6e79cc8cfd1ac389a7f7a7cd06892e2a6ad65f1c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea63bff91102656de198989968a1555c8fc4648b67ab03fb6fbf4c3e0cedac27
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ea63bff91102656de198989968a1555c8fc4648b67ab03fb6fbf4c3e0cedac27", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking regress v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/classicalbacktrack.rs:523:18
[INFO] [stdout]     |
[INFO] [stdout] 523 |                 };
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/pikevm.rs:101:6
[INFO] [stdout]     |
[INFO] [stdout] 101 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/classicalbacktrack.rs:523:18
[INFO] [stdout]     |
[INFO] [stdout] 523 |                 };
[INFO] [stdout]     |                  ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/pikevm.rs:101:6
[INFO] [stdout]     |
[INFO] [stdout] 101 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:228:42
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 let c = Cursor::Element::try_from(c)?;
[INFO] [stdout]     |                                          ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 let c = ElementType::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 let c = TryFrom::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:232:42
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let c = Cursor::Element::try_from(c)?;
[INFO] [stdout]     |                                          ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let c = ElementType::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let c = TryFrom::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:527:56
[INFO] [stdout]     |
[INFO] [stdout] 527 |                         let m = match Cursor::Element::try_from(c) {
[INFO] [stdout]     |                                                        ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 527 |                         let m = match ElementType::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 527 |                         let m = match TryFrom::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:567:56
[INFO] [stdout]     |
[INFO] [stdout] 567 |                         let m = match Cursor::Element::try_from(c) {
[INFO] [stdout]     |                                                        ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 567 |                         let m = match ElementType::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 567 |                         let m = match TryFrom::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:228:42
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 let c = Cursor::Element::try_from(c)?;
[INFO] [stdout]     |                                          ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 let c = ElementType::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 228 |                 let c = TryFrom::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:232:42
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let c = Cursor::Element::try_from(c)?;
[INFO] [stdout]     |                                          ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let c = ElementType::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 let c = TryFrom::try_from(c)?;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:527:56
[INFO] [stdout]     |
[INFO] [stdout] 527 |                         let m = match Cursor::Element::try_from(c) {
[INFO] [stdout]     |                                                        ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 527 |                         let m = match ElementType::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 527 |                         let m = match TryFrom::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/classicalbacktrack.rs:567:56
[INFO] [stdout]     |
[INFO] [stdout] 567 |                         let m = match Cursor::Element::try_from(c) {
[INFO] [stdout]     |                                                        ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 567 |                         let m = match ElementType::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 567 |                         let m = match TryFrom::try_from(c) {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/pikevm.rs:110:44
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let c = match Cursor::Element::try_from(c) {
[INFO] [stdout]     |                                            ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let c = match ElementType::try_from(c) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let c = match TryFrom::try_from(c) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ElementType`
[INFO] [stdout]  --> src/classicalbacktrack.rs:8:35
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::indexing::{AsciiInput, ElementType, InputIndexer, Utf8Input};
[INFO] [stdout]   |                                   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regress`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/pikevm.rs:110:44
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let c = match Cursor::Element::try_from(c) {
[INFO] [stdout]     |                                            ^^^^^^^^ multiple `try_from` found
[INFO] [stdout]     |
[INFO] [stdout] note: candidate #1 is defined in the trait `ElementType`
[INFO] [stdout]    --> src/indexing.rs:23:5
[INFO] [stdout]     |
[INFO] [stdout] 23  |     fn try_from<Elem: ElementType>(v: Elem) -> Option<Self> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: candidate #2 is defined in the trait `TryFrom`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let c = match ElementType::try_from(c) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 110 |             let c = match TryFrom::try_from(c) {
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ElementType`
[INFO] [stdout]  --> src/classicalbacktrack.rs:8:35
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::indexing::{AsciiInput, ElementType, InputIndexer, Utf8Input};
[INFO] [stdout]   |                                   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ea63bff91102656de198989968a1555c8fc4648b67ab03fb6fbf4c3e0cedac27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea63bff91102656de198989968a1555c8fc4648b67ab03fb6fbf4c3e0cedac27", kill_on_drop: false }`
[INFO] [stdout] ea63bff91102656de198989968a1555c8fc4648b67ab03fb6fbf4c3e0cedac27