[INFO] cloning repository https://github.com/gorilskij/rust_turing_machine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gorilskij/rust_turing_machine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgorilskij%2Frust_turing_machine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgorilskij%2Frust_turing_machine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5e87c76c5b99a776b915368c0ed02a7a7cebcc0
[INFO] testing gorilskij/rust_turing_machine against beta-2021-09-12 for beta-1.56-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgorilskij%2Frust_turing_machine" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gorilskij/rust_turing_machine on toolchain beta-2021-09-12
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gorilskij/rust_turing_machine
[INFO] finished tweaking git repo https://github.com/gorilskij/rust_turing_machine
[INFO] tweaked toml for git repo https://github.com/gorilskij/rust_turing_machine written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/gorilskij/rust_turing_machine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getset v0.1.0
[INFO] [stderr]   Downloaded no-comment v0.0.1
[INFO] [stderr]   Downloaded bimap v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b7475ed5d000338df37fdd85387a0acfaa59740aaf5a0e1ed6d4de03615508b
[INFO] running `Command { std: "docker" "start" "-a" "6b7475ed5d000338df37fdd85387a0acfaa59740aaf5a0e1ed6d4de03615508b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b7475ed5d000338df37fdd85387a0acfaa59740aaf5a0e1ed6d4de03615508b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b7475ed5d000338df37fdd85387a0acfaa59740aaf5a0e1ed6d4de03615508b", kill_on_drop: false }`
[INFO] [stdout] 6b7475ed5d000338df37fdd85387a0acfaa59740aaf5a0e1ed6d4de03615508b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-12" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 964637c9ae28eaf13bcc3dc17cf8fb67a1eee5432e94bc326e7790da44f089f7
[INFO] running `Command { std: "docker" "start" "-a" "964637c9ae28eaf13bcc3dc17cf8fb67a1eee5432e94bc326e7790da44f089f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling no-comment v0.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling bimap v0.4.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling derive_more v0.99.3
[INFO] [stderr]    Compiling getset v0.1.0
[INFO] [stderr]    Compiling turing_machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]   --> src/turing_machine/mod.rs:75:26
[INFO] [stdout]    |
[INFO] [stdout] 75 |                         .intersperse("|")
[INFO] [stdout]    |                          ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]    |
[INFO] [stdout]    = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `Map<I, F>`
[INFO] [stdout]    = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]    |
[INFO] [stdout] 68 ~                     let tape_string = Iterator::intersperse(self
[INFO] [stdout] 69 +                         .tape
[INFO] [stdout] 70 +                         .iter()
[INFO] [stdout] 71 +                         .map(|i| match i {
[INFO] [stdout] 72 +                             0 => "",
[INFO] [stdout] 73 +                             j => self.rules.symbols().get_by_right(j).unwrap().borrow(),
[INFO] [stdout]  ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]    |
[INFO] [stdout] 68 ~                     let tape_string = Itertools::intersperse(self
[INFO] [stdout] 69 +                         .tape
[INFO] [stdout] 70 +                         .iter()
[INFO] [stdout] 71 +                         .map(|i| match i {
[INFO] [stdout] 72 +                             0 => "",
[INFO] [stdout] 73 +                             j => self.rules.symbols().get_by_right(j).unwrap().borrow(),
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/turing_machine/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning 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 `turing_machine` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "964637c9ae28eaf13bcc3dc17cf8fb67a1eee5432e94bc326e7790da44f089f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "964637c9ae28eaf13bcc3dc17cf8fb67a1eee5432e94bc326e7790da44f089f7", kill_on_drop: false }`
[INFO] [stdout] 964637c9ae28eaf13bcc3dc17cf8fb67a1eee5432e94bc326e7790da44f089f7