[INFO] fetching crate jsonrpc-stdio-server 18.0.0...
[INFO] testing jsonrpc-stdio-server-18.0.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate jsonrpc-stdio-server 18.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate jsonrpc-stdio-server 18.0.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonrpc-stdio-server 18.0.0
[INFO] finished tweaking crates.io crate jsonrpc-stdio-server 18.0.0
[INFO] tweaked toml for crates.io crate jsonrpc-stdio-server 18.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate jsonrpc-stdio-server 18.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f457b583ef80abbbe359a2230a5029bf4d8fd0a6f660893a3cefc16b51bf82c
[INFO] running `Command { std: "docker" "start" "-a" "5f457b583ef80abbbe359a2230a5029bf4d8fd0a6f660893a3cefc16b51bf82c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f457b583ef80abbbe359a2230a5029bf4d8fd0a6f660893a3cefc16b51bf82c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f457b583ef80abbbe359a2230a5029bf4d8fd0a6f660893a3cefc16b51bf82c", kill_on_drop: false }`
[INFO] [stdout] 5f457b583ef80abbbe359a2230a5029bf4d8fd0a6f660893a3cefc16b51bf82c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f813e5b1be48ca0e4d74b0a5a117250740cfde29e0154d10bc4ba42967d26655
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f813e5b1be48ca0e4d74b0a5a117250740cfde29e0154d10bc4ba42967d26655", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling futures-executor v0.3.15
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling jsonrpc-core v18.0.0
[INFO] [stderr]    Compiling jsonrpc-stdio-server v18.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.81s
[INFO] running `Command { std: "docker" "inspect" "f813e5b1be48ca0e4d74b0a5a117250740cfde29e0154d10bc4ba42967d26655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f813e5b1be48ca0e4d74b0a5a117250740cfde29e0154d10bc4ba42967d26655", kill_on_drop: false }`
[INFO] [stdout] f813e5b1be48ca0e4d74b0a5a117250740cfde29e0154d10bc4ba42967d26655
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45f6c3dfd4e50616672679c2dd1e226ba84c3f85fa5e2774a98dfd3018d68ca1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "45f6c3dfd4e50616672679c2dd1e226ba84c3f85fa5e2774a98dfd3018d68ca1", kill_on_drop: false }`
[INFO] [stderr]    Compiling jsonrpc-stdio-server v18.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: The default runtime flavor is `multi_thread`, but the `rt-multi-thread` feature is disabled.
[INFO] [stdout]  --> examples/stdio.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[tokio::main]
[INFO] [stdout]   | ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in the attribute macro `tokio::main` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `jsonrpc_stdio_server::jsonrpc_core::*`
[INFO] [stdout]  --> examples/stdio.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use jsonrpc_stdio_server::jsonrpc_core::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `jsonrpc_stdio_server::ServerBuilder`
[INFO] [stdout]  --> examples/stdio.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use jsonrpc_stdio_server::ServerBuilder;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `stdio`
[INFO] [stdout]   --> examples/stdio.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / use jsonrpc_stdio_server::jsonrpc_core::*;
[INFO] [stdout] 2  | | use jsonrpc_stdio_server::ServerBuilder;
[INFO] [stdout] 3  | |
[INFO] [stdout] 4  | | #[tokio::main]
[INFO] [stdout] ...  |
[INFO] [stdout] 10 | |     server.await;
[INFO] [stdout] 11 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/stdio.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsonrpc-stdio-server` due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "45f6c3dfd4e50616672679c2dd1e226ba84c3f85fa5e2774a98dfd3018d68ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45f6c3dfd4e50616672679c2dd1e226ba84c3f85fa5e2774a98dfd3018d68ca1", kill_on_drop: false }`
[INFO] [stdout] 45f6c3dfd4e50616672679c2dd1e226ba84c3f85fa5e2774a98dfd3018d68ca1
