[INFO] fetching crate jsonrpc-stdio-server 18.0.0...
[INFO] checking jsonrpc-stdio-server-18.0.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate jsonrpc-stdio-server 18.0.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate jsonrpc-stdio-server 18.0.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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-7/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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0901a60e132b4785fdf3d1d876defa38f0fa0f43b63555384d0139109d5f0906
[INFO] running `Command { std: "docker" "start" "-a" "0901a60e132b4785fdf3d1d876defa38f0fa0f43b63555384d0139109d5f0906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0901a60e132b4785fdf3d1d876defa38f0fa0f43b63555384d0139109d5f0906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0901a60e132b4785fdf3d1d876defa38f0fa0f43b63555384d0139109d5f0906", kill_on_drop: false }`
[INFO] [stdout] 0901a60e132b4785fdf3d1d876defa38f0fa0f43b63555384d0139109d5f0906
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2728ef0eee316d89f4af5f547641117e0535779d6d9b2f583a59ff47c417729b
[INFO] running `Command { std: "docker" "start" "-a" "2728ef0eee316d89f4af5f547641117e0535779d6d9b2f583a59ff47c417729b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking jsonrpc-core v18.0.0
[INFO] [stderr]     Checking 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] running `Command { std: "docker" "inspect" "2728ef0eee316d89f4af5f547641117e0535779d6d9b2f583a59ff47c417729b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2728ef0eee316d89f4af5f547641117e0535779d6d9b2f583a59ff47c417729b", kill_on_drop: false }`
[INFO] [stdout] 2728ef0eee316d89f4af5f547641117e0535779d6d9b2f583a59ff47c417729b