[INFO] fetching crate frunk_core 0.3.1...
[INFO] checking frunk_core-0.3.1 against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] extracting crate frunk_core 0.3.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate frunk_core 0.3.1 on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frunk_core 0.3.1
[INFO] finished tweaking crates.io crate frunk_core 0.3.1
[INFO] tweaked toml for crates.io crate frunk_core 0.3.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 216ecef47b625d7b663f9892ecb03b99b6b10076b1171cd39b42033a6603d982
[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" "216ecef47b625d7b663f9892ecb03b99b6b10076b1171cd39b42033a6603d982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "216ecef47b625d7b663f9892ecb03b99b6b10076b1171cd39b42033a6603d982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "216ecef47b625d7b663f9892ecb03b99b6b10076b1171cd39b42033a6603d982", kill_on_drop: false }`
[INFO] [stdout] 216ecef47b625d7b663f9892ecb03b99b6b10076b1171cd39b42033a6603d982
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "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] 7998c0a5db4d9c5ab736ede7d16fe138b9a2e4d24565fa19c91eba461b1ddd80
[INFO] running `Command { std: "docker" "start" "-a" "7998c0a5db4d9c5ab736ede7d16fe138b9a2e4d24565fa19c91eba461b1ddd80", kill_on_drop: false }`
[INFO] [stderr]    Compiling frunk_core v0.3.1
[INFO] [stderr]     Checking frunk_core v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.0.3
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.0.4
[INFO] [stderr]    Compiling frunk_proc_macros_impl v0.0.3
[INFO] [stderr]    Compiling frunk_derives v0.3.1
[INFO] [stderr]     Checking frunk_proc_macros v0.0.3
[INFO] [stderr]     Checking frunk v0.3.1
[INFO] [stdout] warning: unused variable: `res`
[INFO] [stdout]     --> src/coproduct.rs:1125:21
[INFO] [stdout]      |
[INFO] [stdout] 1125 |                 let res: Result<CNil, _> = cnil.subset();
[INFO] [stdout]      |                     ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.19s
[INFO] running `Command { std: "docker" "inspect" "7998c0a5db4d9c5ab736ede7d16fe138b9a2e4d24565fa19c91eba461b1ddd80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7998c0a5db4d9c5ab736ede7d16fe138b9a2e4d24565fa19c91eba461b1ddd80", kill_on_drop: false }`
[INFO] [stdout] 7998c0a5db4d9c5ab736ede7d16fe138b9a2e4d24565fa19c91eba461b1ddd80