[INFO] fetching crate prost-codegen 0.1.0...
[INFO] testing prost-codegen-0.1.0 against beta-2021-09-12 for beta-1.56-2
[INFO] extracting crate prost-codegen 0.1.0 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate prost-codegen 0.1.0 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 crates.io crate prost-codegen 0.1.0
[INFO] finished tweaking crates.io crate prost-codegen 0.1.0
[INFO] tweaked toml for crates.io crate prost-codegen 0.1.0 written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-12" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 prost v0.1.0
[INFO] [stderr]   Downloaded prost-derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 328c51fdaa9ef1d72a3002032e21e29c4902656c4ef807e26ca70c945145a679
[INFO] running `Command { std: "docker" "start" "-a" "328c51fdaa9ef1d72a3002032e21e29c4902656c4ef807e26ca70c945145a679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "328c51fdaa9ef1d72a3002032e21e29c4902656c4ef807e26ca70c945145a679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "328c51fdaa9ef1d72a3002032e21e29c4902656c4ef807e26ca70c945145a679", kill_on_drop: false }`
[INFO] [stdout] 328c51fdaa9ef1d72a3002032e21e29c4902656c4ef807e26ca70c945145a679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 667cdd48acae6ebb39b17e1771fd4cb677ce0d3e63a2e9b51e956cb19553495f
[INFO] running `Command { std: "docker" "start" "-a" "667cdd48acae6ebb39b17e1771fd4cb677ce0d3e63a2e9b51e956cb19553495f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling multimap v0.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling itertools v0.6.5
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling prost v0.1.0
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling prost-derive v0.1.0
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/prost-derive-0.1.0/src/prost-derive.rs:89:69
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let tags = field.tags().into_iter().map(|tag| quote!(#tag)).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] 89 ~         let tags = Iterator::intersperse(field.tags().into_iter().map(|tag| quote!(#tag)), {
[INFO] [stdout] 90 +             let mut _s = $crate::Tokens::new();
[INFO] [stdout] 91 +             quote_each_token!(_s $($tt)*);
[INFO] [stdout] 92 +             _s
[INFO] [stdout] 93 ~         });
[INFO] [stdout]    |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]    |
[INFO] [stdout] 89 ~         let tags = Itertools::intersperse(field.tags().into_iter().map(|tag| quote!(#tag)), {
[INFO] [stdout] 90 +             let mut _s = $crate::Tokens::new();
[INFO] [stdout] 91 +             quote_each_token!(_s $($tt)*);
[INFO] [stdout] 92 +             _s
[INFO] [stdout] 93 ~         });
[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" "667cdd48acae6ebb39b17e1771fd4cb677ce0d3e63a2e9b51e956cb19553495f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "667cdd48acae6ebb39b17e1771fd4cb677ce0d3e63a2e9b51e956cb19553495f", kill_on_drop: false }`
[INFO] [stdout] 667cdd48acae6ebb39b17e1771fd4cb677ce0d3e63a2e9b51e956cb19553495f