[INFO] fetching crate lightning-wire-msgs-derive-base 0.2.6...
[INFO] checking lightning-wire-msgs-derive-base-0.2.6 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate lightning-wire-msgs-derive-base 0.2.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate lightning-wire-msgs-derive-base 0.2.6 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07792f6e61980c830b1d0f192dd4a98482b5a702071313fe8b4e7a6fbeeb9979
[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" "07792f6e61980c830b1d0f192dd4a98482b5a702071313fe8b4e7a6fbeeb9979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07792f6e61980c830b1d0f192dd4a98482b5a702071313fe8b4e7a6fbeeb9979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07792f6e61980c830b1d0f192dd4a98482b5a702071313fe8b4e7a6fbeeb9979", kill_on_drop: false }`
[INFO] [stdout] 07792f6e61980c830b1d0f192dd4a98482b5a702071313fe8b4e7a6fbeeb9979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fac8c6421e6d15ebf1bd999703880d2c6233a8bcbcab55651c4c863bb018036b
[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" "fac8c6421e6d15ebf1bd999703880d2c6233a8bcbcab55651c4c863bb018036b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking quote v1.0.7
[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 9.67s
[INFO] running `Command { std: "docker" "inspect" "fac8c6421e6d15ebf1bd999703880d2c6233a8bcbcab55651c4c863bb018036b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fac8c6421e6d15ebf1bd999703880d2c6233a8bcbcab55651c4c863bb018036b", kill_on_drop: false }`
[INFO] [stdout] fac8c6421e6d15ebf1bd999703880d2c6233a8bcbcab55651c4c863bb018036b