[INFO] crate tarpc-example-service 0.1.0 is already in cache
[INFO] extracting crate tarpc-example-service 0.1.0 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/tarpc-example-service/0.1.0
[INFO] extracting crate tarpc-example-service 0.1.0 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/tarpc-example-service/0.1.0
[INFO] validating manifest of tarpc-example-service-0.1.0 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tarpc-example-service-0.1.0 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tarpc-example-service-0.1.0
[INFO] finished frobbing tarpc-example-service-0.1.0
[INFO] frobbed toml for tarpc-example-service-0.1.0 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/tarpc-example-service/0.1.0/Cargo.toml
[INFO] started frobbing tarpc-example-service-0.1.0
[INFO] finished frobbing tarpc-example-service-0.1.0
[INFO] frobbed toml for tarpc-example-service-0.1.0 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/tarpc-example-service/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tarpc-example-service-0.1.0 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/tarpc-example-service/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 56d6438b077be05ed16e42e6c1b18a924484aa500556b785ba7d1d4b0ad862a9
[INFO] running `"docker" "start" "-a" "56d6438b077be05ed16e42e6c1b18a924484aa500556b785ba7d1d4b0ad862a9"`
[INFO] [stderr] warning: the cargo feature `rename-dependency` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.2
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling proc-macro-hack v0.5.4
[INFO] [stderr]    Compiling tarpc-plugins v0.5.0
[INFO] [stderr]    Compiling tarpc-trace v0.1.0
[INFO] [stderr]    Compiling derive-error v0.0.3
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling tokio-io v0.1.11
[INFO] [stderr]    Compiling tokio-serde v0.1.0
[INFO] [stderr]    Compiling tokio-serde v0.2.0
[INFO] [stderr]    Compiling tokio-serde-bincode v0.1.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.8
[INFO] [stderr]    Compiling tokio-fs v0.1.5
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.15
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.12
[INFO] [stderr]    Compiling tarpc-lib v0.1.0
[INFO] [stderr] error[E0446]: crate-visible type `client::dispatch::Channel<Req, Resp>` in public interface
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/tarpc-lib-0.1.0/src/client/dispatch.rs:202:1
[INFO] [stderr]     |
[INFO] [stderr] 40  |   pub(crate) struct Channel<Req, Resp> {
[INFO] [stderr]     |   ---------- `client::dispatch::Channel<Req, Resp>` declared as crate-visible
[INFO] [stderr] ...
[INFO] [stderr] 202 | / pub async fn spawn<Req, Resp, C>(
[INFO] [stderr] 203 | |     config: Config,
[INFO] [stderr] 204 | |     transport: C,
[INFO] [stderr] 205 | |     server_addr: SocketAddr,
[INFO] [stderr] ...   |
[INFO] [stderr] 239 | |     })
[INFO] [stderr] 240 | | }
[INFO] [stderr]     | |_^ can't leak crate-visible type
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0446`.
[INFO] [stderr] error: Could not compile `tarpc-lib`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "56d6438b077be05ed16e42e6c1b18a924484aa500556b785ba7d1d4b0ad862a9"`
[INFO] running `"docker" "rm" "-f" "56d6438b077be05ed16e42e6c1b18a924484aa500556b785ba7d1d4b0ad862a9"`
[INFO] [stdout] 56d6438b077be05ed16e42e6c1b18a924484aa500556b785ba7d1d4b0ad862a9