[INFO] fetching crate lightning-wire-msgs-derive-base 0.2.6...
[INFO] checking lightning-wire-msgs-derive-base-0.2.6 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate lightning-wire-msgs-derive-base 0.2.6 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate lightning-wire-msgs-derive-base 0.2.6 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lightning-wire-msgs-derive-base 0.2.6
[INFO] finished tweaking crates.io crate lightning-wire-msgs-derive-base 0.2.6
[INFO] tweaked toml for crates.io crate lightning-wire-msgs-derive-base 0.2.6 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 266d609c33056ec62c0cbcb450b1f9bac3df6be45d8375df5a1de03db58d50f0
[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" "266d609c33056ec62c0cbcb450b1f9bac3df6be45d8375df5a1de03db58d50f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "266d609c33056ec62c0cbcb450b1f9bac3df6be45d8375df5a1de03db58d50f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "266d609c33056ec62c0cbcb450b1f9bac3df6be45d8375df5a1de03db58d50f0", kill_on_drop: false }`
[INFO] [stdout] 266d609c33056ec62c0cbcb450b1f9bac3df6be45d8375df5a1de03db58d50f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] fdb1c9713004fa9f79e9e6900efcbd8c647cb5fb97d40462971f10d98b6f867d
[INFO] running `Command { std: "docker" "start" "-a" "fdb1c9713004fa9f79e9e6900efcbd8c647cb5fb97d40462971f10d98b6f867d", kill_on_drop: false }`
[INFO] [stderr]     Checking lightning-wire-msgs-derive-base v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/wire_msg.rs:176:29
[INFO] [stdout]     |
[INFO] [stdout] 176 | / ...                   (match a.args.first().expect("tlv value must be Option") {
[INFO] [stdout] 177 | | ...                       syn::GenericArgument::Type(t) => t.clone(),
[INFO] [stdout] 178 | | ...                       _ => panic!("tlv value must be Option"),
[INFO] [stdout] 179 | | ...                   })
[INFO] [stdout]     | |________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 176 |                             match a.args.first().expect("tlv value must be Option") {
[INFO] [stdout] 177 |                                 syn::GenericArgument::Type(t) => t.clone(),
[INFO] [stdout] 178 |                                 _ => panic!("tlv value must be Option"),
[INFO] [stdout] 179 |                             }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/wire_msg.rs:176:29
[INFO] [stdout]     |
[INFO] [stdout] 176 | / ...                   (match a.args.first().expect("tlv value must be Option") {
[INFO] [stdout] 177 | | ...                       syn::GenericArgument::Type(t) => t.clone(),
[INFO] [stdout] 178 | | ...                       _ => panic!("tlv value must be Option"),
[INFO] [stdout] 179 | | ...                   })
[INFO] [stdout]     | |________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 176 |                             match a.args.first().expect("tlv value must be Option") {
[INFO] [stdout] 177 |                                 syn::GenericArgument::Type(t) => t.clone(),
[INFO] [stdout] 178 |                                 _ => panic!("tlv value must be Option"),
[INFO] [stdout] 179 |                             }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "fdb1c9713004fa9f79e9e6900efcbd8c647cb5fb97d40462971f10d98b6f867d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdb1c9713004fa9f79e9e6900efcbd8c647cb5fb97d40462971f10d98b6f867d", kill_on_drop: false }`
[INFO] [stdout] fdb1c9713004fa9f79e9e6900efcbd8c647cb5fb97d40462971f10d98b6f867d