[INFO] fetching crate tarpc-lib 0.7.0...
[INFO] checking tarpc-lib-0.7.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate tarpc-lib 0.7.0 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate tarpc-lib 0.7.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tarpc-lib 0.7.0
[INFO] finished tweaking crates.io crate tarpc-lib 0.7.0
[INFO] tweaked toml for crates.io crate tarpc-lib 0.7.0 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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" "+1.55.0" "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-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8185d1bfbf26b0d880131fba6105436a83f6d73bf8613ca1337ccbafedfed92
[INFO] running `Command { std: "docker" "start" "-a" "b8185d1bfbf26b0d880131fba6105436a83f6d73bf8613ca1337ccbafedfed92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8185d1bfbf26b0d880131fba6105436a83f6d73bf8613ca1337ccbafedfed92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8185d1bfbf26b0d880131fba6105436a83f6d73bf8613ca1337ccbafedfed92", kill_on_drop: false }`
[INFO] [stdout] b8185d1bfbf26b0d880131fba6105436a83f6d73bf8613ca1337ccbafedfed92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d586b4d4ba02e1d806c93c29c2ec83933701c00a7bdc28c53e656a65e1008000
[INFO] running `Command { std: "docker" "start" "-a" "d586b4d4ba02e1d806c93c29c2ec83933701c00a7bdc28c53e656a65e1008000", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking tarpc-trace v0.3.0
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]     Checking tokio-sync v0.2.0-alpha.6
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-test-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio-timer v0.3.0-alpha.6
[INFO] [stderr]     Checking tarpc-lib v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]    --> src/client/channel.rs:736:9
[INFO] [stdout]     |
[INFO] [stdout] 736 |     use tokio::runtime::current_thread;
[INFO] [stdout]     |         ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]   --> src/transport/channel.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 |     #[tokio::test]
[INFO] [stdout]    |       ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(weak_counts, non_exhaustive, trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `non_exhaustive` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `current_thread`
[INFO] [stdout]    --> src/client/channel.rs:782:9
[INFO] [stdout]     |
[INFO] [stdout] 782 |         current_thread::Runtime::new().unwrap().block_on(f)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ use of undeclared crate or module `current_thread`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]   --> src/transport/channel.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         tokio::spawn(
[INFO] [stdout]    |         ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(weak_counts, non_exhaustive, trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `non_exhaustive` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Handler`
[INFO] [stdout]   --> src/transport/channel.rs:82:18
[INFO] [stdout]    |
[INFO] [stdout] 82 |         server::{Handler, Server},
[INFO] [stdout]    |                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tarpc-lib` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `respond_with` found for opaque type `impl futures::Stream` in the current scope
[INFO] [stdout]    --> src/transport/channel.rs:98:18
[INFO] [stdout]     |
[INFO] [stdout] 98  |                 .respond_with(|_ctx, request: String| {
[INFO] [stdout]     |                  ^^^^^^^^^^^^ method not found in `impl futures::Stream`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout] note: `server::Channel` defines an item `respond_with`, perhaps you need to implement it
[INFO] [stdout]    --> src/server/mod.rs:243:1
[INFO] [stdout]     |
[INFO] [stdout] 243 | / pub trait Channel
[INFO] [stdout] 244 | | where
[INFO] [stdout] 245 | |     Self: Transport<Response<<Self as Channel>::Resp>, Request<<Self as Channel>::Req>>,
[INFO] [stdout] 246 | | {
[INFO] [stdout] ...   |
[INFO] [stdout] 288 | |     }
[INFO] [stdout] 289 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `spawn` found for struct `NewClient` in the current scope
[INFO] [stdout]    --> src/transport/channel.rs:108:81
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let mut client = client::new(client::Config::default(), client_channel).spawn()?;
[INFO] [stdout]     |                                                                                 ^^^^^ method not found in `NewClient<client::channel::Channel<_, _>, RequestDispatch<_, _, UnboundedChannel<Response<_>, ClientMessage<_>>>>`
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/client/mod.rs:131:1
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub struct NewClient<C, D> {
[INFO] [stdout]     | -------------------------- method `spawn` not found for this
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]     = note: the following traits define an item `spawn`, perhaps you need to implement one of them:
[INFO] [stdout]             candidate #1: `SpawnExt`
[INFO] [stdout]             candidate #2: `tokio_executor::executor::Executor`
[INFO] [stdout]             candidate #3: `tokio_executor::typed::TypedExecutor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d586b4d4ba02e1d806c93c29c2ec83933701c00a7bdc28c53e656a65e1008000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d586b4d4ba02e1d806c93c29c2ec83933701c00a7bdc28c53e656a65e1008000", kill_on_drop: false }`
[INFO] [stdout] d586b4d4ba02e1d806c93c29c2ec83933701c00a7bdc28c53e656a65e1008000
