[INFO] fetching crate rtc-examples 0.20.0-rc.3...
[INFO] checking rtc-examples-0.20.0-rc.3 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate rtc-examples 0.20.0-rc.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rtc-examples 0.20.0-rc.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rtc-examples 0.20.0-rc.3
[INFO] tweaked toml for crates.io crate rtc-examples 0.20.0-rc.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rtc-examples 0.20.0-rc.3 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rtc-examples 0.20.0-rc.3 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81
[INFO] running `Command { std: "docker" "start" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking rtc-media v0.20.0-rc.3
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[INFO] [stderr]     Checking rtc v0.20.0-rc.3
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[INFO] [stdout] error: useless conversion to the same type: `BytesMut`
[INFO] [stdout]    --> examples/data-channels-simple/data-channels-simple.rs:204:37
[INFO] [stdout]     |
[INFO] [stdout] 204 |                 pending_sends.push((msg.message.into(), msg.transport.peer_addr));
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 204 -                 pending_sends.push((msg.message.into(), msg.transport.peer_addr));
[INFO] [stdout] 204 +                 pending_sends.push((msg.message, msg.transport.peer_addr));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 204 -                 pending_sends.push((msg.message.into(), msg.transport.peer_addr));
[INFO] [stdout] 204 +                 pending_sends.push((<BytesMut as Into<_>>::into(msg.message), msg.transport.peer_addr));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rtc-examples` (example "data-channels-simple") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81", kill_on_drop: false }`
[INFO] [stdout] 5880adf1348ee5db12428d1654641a06c7dfa26528314d6fd5f7228b483f9c81
