[INFO] fetching crate rlay-plugin-interface 0.3.0...
[INFO] testing rlay-plugin-interface-0.3.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rlay-plugin-interface 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rlay-plugin-interface 0.3.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rlay-plugin-interface 0.3.0
[INFO] finished tweaking crates.io crate rlay-plugin-interface 0.3.0
[INFO] tweaked toml for crates.io crate rlay-plugin-interface 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded integer-encoding v1.0.8
[INFO] [stderr]   Downloaded prost v0.6.1
[INFO] [stderr]   Downloaded prost-derive v0.6.1
[INFO] [stderr]   Downloaded generic-array v0.9.1
[INFO] [stderr]   Downloaded rlay-backend v0.3.0
[INFO] [stderr]   Downloaded rlay_ontology v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27ca7bc798f73435d44722a37c3c18ea8427005fb12387f5b81e77b2811fad1a
[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" "27ca7bc798f73435d44722a37c3c18ea8427005fb12387f5b81e77b2811fad1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27ca7bc798f73435d44722a37c3c18ea8427005fb12387f5b81e77b2811fad1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ca7bc798f73435d44722a37c3c18ea8427005fb12387f5b81e77b2811fad1a", kill_on_drop: false }`
[INFO] [stdout] 27ca7bc798f73435d44722a37c3c18ea8427005fb12387f5b81e77b2811fad1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e759fa483f879c3f7f70f1ff2da7e6caa968898eb1c44012c49729407b4845c0
[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" "e759fa483f879c3f7f70f1ff2da7e6caa968898eb1c44012c49729407b4845c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling byte-tools v0.2.0
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling base-x v0.2.8
[INFO] [stderr]    Compiling sha1 v0.5.0
[INFO] [stderr]    Compiling serde_cbor v0.10.2
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling tiny-keccak v1.5.0
[INFO] [stderr]    Compiling generic-array v0.9.1
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling strum_macros v0.16.0
[INFO] [stderr]    Compiling ambassador v0.2.1
[INFO] [stderr]    Compiling integer-encoding v1.0.8
[INFO] [stderr]    Compiling block-buffer v0.3.3
[INFO] [stderr]    Compiling fixed-hash v0.2.5
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling multibase v0.6.0
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/prost-derive-0.6.1/src/lib.rs:111:14
[INFO] [stdout]     |
[INFO] [stdout] 111 |             .intersperse(quote!(|));
[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] 107 ~         let tags = Iterator::intersperse(field
[INFO] [stdout] 108 +             .tags()
[INFO] [stdout] 109 +             .into_iter()
[INFO] [stdout] 110 +             .map(|tag| quote!(#tag)), {
[INFO] [stdout] 111 +         let mut _s = $crate::__private::TokenStream::new();
[INFO] [stdout] 112 +         $crate::quote_each_token!(_s $($tt)*);
[INFO] [stdout]   ...
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 107 ~         let tags = Itertools::intersperse(field
[INFO] [stdout] 108 +             .tags()
[INFO] [stdout] 109 +             .into_iter()
[INFO] [stdout] 110 +             .map(|tag| quote!(#tag)), {
[INFO] [stdout] 111 +         let mut _s = $crate::__private::TokenStream::new();
[INFO] [stdout] 112 +         $crate::quote_each_token!(_s $($tt)*);
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prost-derive` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e759fa483f879c3f7f70f1ff2da7e6caa968898eb1c44012c49729407b4845c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e759fa483f879c3f7f70f1ff2da7e6caa968898eb1c44012c49729407b4845c0", kill_on_drop: false }`
[INFO] [stdout] e759fa483f879c3f7f70f1ff2da7e6caa968898eb1c44012c49729407b4845c0