[INFO] fetching crate json-rpc2 0.10.1...
[INFO] checking json-rpc2-0.10.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate json-rpc2 0.10.1 into /workspace/builds/worker-77/source
[INFO] validating manifest of crates.io crate json-rpc2 0.10.1 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 json-rpc2 0.10.1
[INFO] finished tweaking crates.io crate json-rpc2 0.10.1
[INFO] tweaked toml for crates.io crate json-rpc2 0.10.1 written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] crate crates.io crate json-rpc2 0.10.1 already has a lockfile, it will not be regenerated
[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-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] 59fa17298784cd6e79e9f3ec236c12f551b4fc39b3d56362b62ea574ca74c7ad
[INFO] running `Command { std: "docker" "start" "-a" "59fa17298784cd6e79e9f3ec236c12f551b4fc39b3d56362b62ea574ca74c7ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59fa17298784cd6e79e9f3ec236c12f551b4fc39b3d56362b62ea574ca74c7ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59fa17298784cd6e79e9f3ec236c12f551b4fc39b3d56362b62ea574ca74c7ad", kill_on_drop: false }`
[INFO] [stdout] 59fa17298784cd6e79e9f3ec236c12f551b4fc39b3d56362b62ea574ca74c7ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] 50a60d26055ae6bd5e45b885d0367959d5cc69b0d0d52e3ba69f6b6d14299b8a
[INFO] running `Command { std: "docker" "start" "-a" "50a60d26055ae6bd5e45b885d0367959d5cc69b0d0d52e3ba69f6b6d14299b8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]     Checking once_cell v1.6.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.9
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking json-rpc2 v0.10.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0706]: functions in traits cannot be declared `async`
[INFO] [stdout]   --> src/futures.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |       async fn handle(
[INFO] [stdout]    |       ^----
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____`async` because of this
[INFO] [stdout]    | |
[INFO] [stdout] 16 | |         &self,
[INFO] [stdout] 17 | |         request: &mut Request,
[INFO] [stdout] 18 | |         ctx: &Self::Data,
[INFO] [stdout] 19 | |     ) -> Result<Option<Response>>;
[INFO] [stdout]    | |__________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `async` trait functions are not currently supported
[INFO] [stdout]    = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `async_trait`
[INFO] [stdout]  --> src/futures.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use async_trait::async_trait;
[INFO] [stdout]   |     ^^^^^^^^^^^ use of undeclared crate or module `async_trait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `async_trait`
[INFO] [stdout]  --> src/futures.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[async_trait]
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `std::result::Result<std::option::Option<Response>, Error>` is not a future
[INFO] [stdout]   --> src/futures.rs:49:35
[INFO] [stdout]    |
[INFO] [stdout] 49 |             if let Some(result) = service.handle(request, ctx).await? {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `std::result::Result<std::option::Option<Response>, Error>` is not a future
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Future` is not implemented for `std::result::Result<std::option::Option<Response>, Error>`
[INFO] [stdout] note: required by `poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0706.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json-rpc2` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0706]: functions in traits cannot be declared `async`
[INFO] [stdout]   --> examples/async.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |       async fn handle(
[INFO] [stdout]    |       ^----
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____`async` because of this
[INFO] [stdout]    | |
[INFO] [stdout] 11 | |         &self,
[INFO] [stdout] 12 | |         req: &mut Request,
[INFO] [stdout] 13 | |         _ctx: &Self::Data,
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | |         Ok(response)
[INFO] [stdout] 22 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `async` trait functions are not currently supported
[INFO] [stdout]    = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `json_rpc2::futures`
[INFO] [stdout]  --> examples/async.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use json_rpc2::{futures::*, Request, Response, Result};
[INFO] [stdout]   |                 ^^^^^^^ could not find `futures` in `json_rpc2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `async_trait`
[INFO] [stdout]  --> examples/async.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use async_trait::async_trait;
[INFO] [stdout]   |     ^^^^^^^^^^^ use of undeclared crate or module `async_trait`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `async_trait`
[INFO] [stdout]  --> examples/async.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[async_trait]
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Service` in this scope
[INFO] [stdout]  --> examples/async.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Service for ServiceHandler {
[INFO] [stdout]   |      ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]   |
[INFO] [stdout] 1 | use json_rpc2::Service;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `Service` in this scope
[INFO] [stdout]   --> examples/async.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let service: Box<dyn Service<Data = ()>> = Box::new(ServiceHandler {});
[INFO] [stdout]    |                          ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this trait
[INFO] [stdout]    |
[INFO] [stdout] 1  | use json_rpc2::Service;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Server`
[INFO] [stdout]   --> examples/async.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let server = Server::new(vec![&service]);
[INFO] [stdout]    |                  ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 1  | use json_rpc2::Server;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0405, E0432, E0433, E0706.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "50a60d26055ae6bd5e45b885d0367959d5cc69b0d0d52e3ba69f6b6d14299b8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a60d26055ae6bd5e45b885d0367959d5cc69b0d0d52e3ba69f6b6d14299b8a", kill_on_drop: false }`
[INFO] [stdout] 50a60d26055ae6bd5e45b885d0367959d5cc69b0d0d52e3ba69f6b6d14299b8a
