[INFO] fetching crate jsonrpc-stdio-server 18.0.0...
[INFO] checking jsonrpc-stdio-server-18.0.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate jsonrpc-stdio-server 18.0.0 into /workspace/builds/worker-7-tc2/source
[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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate jsonrpc-stdio-server 18.0.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate jsonrpc-stdio-server 18.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 936f9013b3e6cb3f42096a07b0baa20157b974ebe0db72f1f1b15a160352d445
[INFO] running `Command { std: "docker" "start" "-a" "936f9013b3e6cb3f42096a07b0baa20157b974ebe0db72f1f1b15a160352d445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "936f9013b3e6cb3f42096a07b0baa20157b974ebe0db72f1f1b15a160352d445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "936f9013b3e6cb3f42096a07b0baa20157b974ebe0db72f1f1b15a160352d445", kill_on_drop: false }`
[INFO] [stdout] 936f9013b3e6cb3f42096a07b0baa20157b974ebe0db72f1f1b15a160352d445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c8f6f085eda34ec23c0608f15841e00fd3fa3f840f7f0272c1db13c14ab4fc7
[INFO] running `Command { std: "docker" "start" "-a" "4c8f6f085eda34ec23c0608f15841e00fd3fa3f840f7f0272c1db13c14ab4fc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[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]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[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 aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[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:11:2
[INFO] [stdout]    |
[INFO] [stdout] 11 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `examples/stdio.rs`
[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` (example "stdio") due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4c8f6f085eda34ec23c0608f15841e00fd3fa3f840f7f0272c1db13c14ab4fc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c8f6f085eda34ec23c0608f15841e00fd3fa3f840f7f0272c1db13c14ab4fc7", kill_on_drop: false }`
[INFO] [stdout] 4c8f6f085eda34ec23c0608f15841e00fd3fa3f840f7f0272c1db13c14ab4fc7