[INFO] cloning repository https://github.com/andrewhickman/grpc-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrewhickman/grpc-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewhickman%2Fgrpc-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewhickman%2Fgrpc-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75903875c589bcffcd9c56c09ce65c5b7b081d96
[INFO] checking andrewhickman/grpc-client against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewhickman%2Fgrpc-client" "/workspace/builds/worker-91/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-91/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andrewhickman/grpc-client on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/andrewhickman/grpc-client
[INFO] finished tweaking git repo https://github.com/andrewhickman/grpc-client
[INFO] tweaked toml for git repo https://github.com/andrewhickman/grpc-client written to /workspace/builds/worker-91/source/Cargo.toml
[INFO] crate git repo https://github.com/andrewhickman/grpc-client already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "dceb79dc97c2417fc0051f7618cabd70c12a4baf2cf7b7130f4983a2498b3ae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dceb79dc97c2417fc0051f7618cabd70c12a4baf2cf7b7130f4983a2498b3ae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dceb79dc97c2417fc0051f7618cabd70c12a4baf2cf7b7130f4983a2498b3ae3", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-91/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error[E0599]: the method `len` exists for mutable reference `&'a mut B`, but its trait bounds were not satisfied
[INFO] [stdout]   --> protobuf/src/ty/decode.rs:42:80
[INFO] [stdout]    |
[INFO] [stdout] 42 | ...essage(self.buf.take(self.buf.len()), self.map, WireType::LengthDelimited, message, visitor),
[INFO] [stdout]    |                                  ^^^ method cannot be called on `&'a mut B` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `B: ExactSizeIterator`
[INFO] [stdout]            which is required by `&mut B: ExactSizeIterator`
[INFO] [stdout]    = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stdout] help: the following trait defines an item `len`, perhaps you need to restrict type parameter `B` with it:
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<'a, 'de, B: ExactSizeIterator> Deserializer<'de> for Decoder<'a, B>
[INFO] [stdout]    |               ~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `len` exists for mutable reference `&'a mut B`, but its trait bounds were not satisfied
[INFO] [stdout]   --> protobuf/src/ty/decode.rs:42:80
[INFO] [stdout]    |
[INFO] [stdout] 42 | ...essage(self.buf.take(self.buf.len()), self.map, WireType::LengthDelimited, message, visitor),
[INFO] [stdout]    |                                  ^^^ method cannot be called on `&'a mut B` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `B: ExactSizeIterator`
[INFO] [stdout]            which is required by `&mut B: ExactSizeIterator`
[INFO] [stdout]    = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stdout] help: the following trait defines an item `len`, perhaps you need to restrict type parameter `B` with it:
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<'a, 'de, B: ExactSizeIterator> Deserializer<'de> for Decoder<'a, B>
[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 E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `grpc-client-protobuf` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "de3bc9eb4fa0c99de9a721a5ab53eea00226e833565c472b43455c34c77b7132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de3bc9eb4fa0c99de9a721a5ab53eea00226e833565c472b43455c34c77b7132", kill_on_drop: false }`
[INFO] [stdout] de3bc9eb4fa0c99de9a721a5ab53eea00226e833565c472b43455c34c77b7132