[INFO] fetching crate sp-debug-derive 2.0.0-rc4...
[INFO] checking sp-debug-derive-2.0.0-rc4 against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] extracting crate sp-debug-derive 2.0.0-rc4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate sp-debug-derive 2.0.0-rc4 on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sp-debug-derive 2.0.0-rc4
[INFO] finished tweaking crates.io crate sp-debug-derive 2.0.0-rc4
[INFO] tweaked toml for crates.io crate sp-debug-derive 2.0.0-rc4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4e48b8c88544a0fbe2fe1885ffadf1a9f3cc7e66b495bd61a0ffdc7acc0b7ae
[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" "e4e48b8c88544a0fbe2fe1885ffadf1a9f3cc7e66b495bd61a0ffdc7acc0b7ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4e48b8c88544a0fbe2fe1885ffadf1a9f3cc7e66b495bd61a0ffdc7acc0b7ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4e48b8c88544a0fbe2fe1885ffadf1a9f3cc7e66b495bd61a0ffdc7acc0b7ae", kill_on_drop: false }`
[INFO] [stdout] e4e48b8c88544a0fbe2fe1885ffadf1a9f3cc7e66b495bd61a0ffdc7acc0b7ae
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 482e3b9e2c5b019cecb605044f74c89eb9c4719af229b8c651d0fc5cfcddc35e
[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" "482e3b9e2c5b019cecb605044f74c89eb9c4719af229b8c651d0fc5cfcddc35e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking sp-debug-derive v2.0.0-rc4 (/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 18.16s
[INFO] running `Command { std: "docker" "inspect" "482e3b9e2c5b019cecb605044f74c89eb9c4719af229b8c651d0fc5cfcddc35e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "482e3b9e2c5b019cecb605044f74c89eb9c4719af229b8c651d0fc5cfcddc35e", kill_on_drop: false }`
[INFO] [stdout] 482e3b9e2c5b019cecb605044f74c89eb9c4719af229b8c651d0fc5cfcddc35e