[INFO] fetching crate prost-codegen 0.1.0...
[INFO] checking prost-codegen-0.1.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate prost-codegen 0.1.0 into /workspace/builds/worker-80/source
[INFO] validating manifest of crates.io crate prost-codegen 0.1.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-80/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 10a28910940e70804f18a337dcba3ac26f1624f8f6151d2978155f1c564a185b
[INFO] running `Command { std: "docker" "start" "-a" "10a28910940e70804f18a337dcba3ac26f1624f8f6151d2978155f1c564a185b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10a28910940e70804f18a337dcba3ac26f1624f8f6151d2978155f1c564a185b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10a28910940e70804f18a337dcba3ac26f1624f8f6151d2978155f1c564a185b", kill_on_drop: false }`
[INFO] [stdout] 10a28910940e70804f18a337dcba3ac26f1624f8f6151d2978155f1c564a185b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d350f9ea844170baeb7a9fdc5e7f4a655945319aa118fef8b378205bed92909
[INFO] running `Command { std: "docker" "start" "-a" "1d350f9ea844170baeb7a9fdc5e7f4a655945319aa118fef8b378205bed92909", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking multimap v0.3.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking prost v0.1.0
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling prost-derive v0.1.0
[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] running `Command { std: "docker" "inspect" "1d350f9ea844170baeb7a9fdc5e7f4a655945319aa118fef8b378205bed92909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d350f9ea844170baeb7a9fdc5e7f4a655945319aa118fef8b378205bed92909", kill_on_drop: false }`
[INFO] [stdout] 1d350f9ea844170baeb7a9fdc5e7f4a655945319aa118fef8b378205bed92909