[INFO] fetching crate sp-debug-derive 2.0.0-alpha.8...
[INFO] checking sp-debug-derive-2.0.0-alpha.8 against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] extracting crate sp-debug-derive 2.0.0-alpha.8 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate sp-debug-derive 2.0.0-alpha.8 on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sp-debug-derive 2.0.0-alpha.8
[INFO] finished tweaking crates.io crate sp-debug-derive 2.0.0-alpha.8
[INFO] tweaked toml for crates.io crate sp-debug-derive 2.0.0-alpha.8 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dca20836e8dcf7dcc1a3b8e21518c0e25255f4bd19f7b7a39085dba1329b79cf
[INFO] running `"docker" "start" "-a" "dca20836e8dcf7dcc1a3b8e21518c0e25255f4bd19f7b7a39085dba1329b79cf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking quote v1.0.6
[INFO] [stderr]    Compiling syn v1.0.23
[INFO] [stderr]     Checking sp-debug-derive v2.0.0-alpha.8 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never read: `a`
[INFO] [stderr]   --> tests/tests.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     a: u64,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `b`
[INFO] [stderr]   --> tests/tests.rs:26:2
[INFO] [stderr]    |
[INFO] [stderr] 26 |     b: String,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `a`
[INFO] [stderr]   --> tests/tests.rs:34:3
[INFO] [stderr]    |
[INFO] [stderr] 34 |         a: A,
[INFO] [stderr]    |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `b`
[INFO] [stderr]   --> tests/tests.rs:35:3
[INFO] [stderr]    |
[INFO] [stderr] 35 |         b: String,
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.81s
[INFO] running `"docker" "inspect" "dca20836e8dcf7dcc1a3b8e21518c0e25255f4bd19f7b7a39085dba1329b79cf"`
[INFO] running `"docker" "rm" "-f" "dca20836e8dcf7dcc1a3b8e21518c0e25255f4bd19f7b7a39085dba1329b79cf"`
[INFO] [stdout] dca20836e8dcf7dcc1a3b8e21518c0e25255f4bd19f7b7a39085dba1329b79cf