[INFO] fetching crate sp-debug-derive 2.0.0-rc5...
[INFO] checking sp-debug-derive-2.0.0-rc5 against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] extracting crate sp-debug-derive 2.0.0-rc5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sp-debug-derive 2.0.0-rc5 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 sp-debug-derive 2.0.0-rc5
[INFO] finished tweaking crates.io crate sp-debug-derive 2.0.0-rc5
[INFO] tweaked toml for crates.io crate sp-debug-derive 2.0.0-rc5 written to /workspace/builds/worker-6/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] 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f82512e50644b9d2b817477dd30076ad407d67d98581a7709bbf871fc8d30dda
[INFO] running `Command { std: "docker" "start" "-a" "f82512e50644b9d2b817477dd30076ad407d67d98581a7709bbf871fc8d30dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f82512e50644b9d2b817477dd30076ad407d67d98581a7709bbf871fc8d30dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f82512e50644b9d2b817477dd30076ad407d67d98581a7709bbf871fc8d30dda", kill_on_drop: false }`
[INFO] [stdout] f82512e50644b9d2b817477dd30076ad407d67d98581a7709bbf871fc8d30dda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 3667a86a7c27da35003ee9c91156da6ea6c34a4fdb5142253019b2f15f3f84e4
[INFO] running `Command { std: "docker" "start" "-a" "3667a86a7c27da35003ee9c91156da6ea6c34a4fdb5142253019b2f15f3f84e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking sp-debug-derive v2.0.0-rc5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]   --> tests/tests.rs:25:2
[INFO] [stdout]    |
[INFO] [stdout] 25 |     a: u64,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]   --> tests/tests.rs:26:2
[INFO] [stdout]    |
[INFO] [stdout] 26 |     b: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]   --> tests/tests.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 34 |         a: A,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]   --> tests/tests.rs:35:3
[INFO] [stdout]    |
[INFO] [stdout] 35 |         b: String,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.03s
[INFO] running `Command { std: "docker" "inspect" "3667a86a7c27da35003ee9c91156da6ea6c34a4fdb5142253019b2f15f3f84e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3667a86a7c27da35003ee9c91156da6ea6c34a4fdb5142253019b2f15f3f84e4", kill_on_drop: false }`
[INFO] [stdout] 3667a86a7c27da35003ee9c91156da6ea6c34a4fdb5142253019b2f15f3f84e4