[INFO] fetching crate conclave-serialize 0.0.1...
[INFO] testing conclave-serialize-0.0.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate conclave-serialize 0.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate conclave-serialize 0.0.1
[INFO] finished tweaking crates.io crate conclave-serialize 0.0.1
[INFO] tweaked toml for crates.io crate conclave-serialize 0.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate conclave-serialize 0.0.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ba1abb77459aa2ce5c2fe8712f3f0085215ceeb86ac684e303f5f16fecfcb23
[INFO] running `Command { std: "docker" "start" "-a" "3ba1abb77459aa2ce5c2fe8712f3f0085215ceeb86ac684e303f5f16fecfcb23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ba1abb77459aa2ce5c2fe8712f3f0085215ceeb86ac684e303f5f16fecfcb23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba1abb77459aa2ce5c2fe8712f3f0085215ceeb86ac684e303f5f16fecfcb23", kill_on_drop: false }`
[INFO] [stdout] 3ba1abb77459aa2ce5c2fe8712f3f0085215ceeb86ac684e303f5f16fecfcb23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c53bbc484711ff68409d5b04e7b6d3bc6813069f94d8f396bca33c2d96e9402
[INFO] running `Command { std: "docker" "start" "-a" "9c53bbc484711ff68409d5b04e7b6d3bc6813069f94d8f396bca33c2d96e9402", kill_on_drop: false }`
[INFO] [stderr]    Compiling conclave-room v0.0.2-pre02
[INFO] [stderr]    Compiling flood-rs v0.0.3
[INFO] [stderr]    Compiling conclave-types v0.0.1
[INFO] [stderr]    Compiling conclave-room-serialize v0.0.2-pre03
[INFO] [stderr]    Compiling conclave-serialize v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]   --> src/lib.rs:66:55
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 writer.extend_from_slice(ping_command.to_octets().as_slice())
[INFO] [stdout]    |                                                       ^^^^^^^^^-- argument #1 of type `&mut _` is missing
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/conclave-room-serialize-0.0.2-pre03/src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn to_octets<T: WriteOctetStream>(&self, stream: &mut T) -> Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] help: provide the argument
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 writer.extend_from_slice(ping_command.to_octets(/* stream */).as_slice())
[INFO] [stdout]    |                                                                 ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_slice` found for enum `Result<T, E>` in the current scope
[INFO] [stdout]   --> src/lib.rs:66:67
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 writer.extend_from_slice(ping_command.to_octets().as_slice())
[INFO] [stdout]    |                                                                   ^^^^^^^^ method not found in `Result<(), std::io::Error>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `conclave-serialize` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9c53bbc484711ff68409d5b04e7b6d3bc6813069f94d8f396bca33c2d96e9402", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c53bbc484711ff68409d5b04e7b6d3bc6813069f94d8f396bca33c2d96e9402", kill_on_drop: false }`
[INFO] [stdout] 9c53bbc484711ff68409d5b04e7b6d3bc6813069f94d8f396bca33c2d96e9402