[INFO] crate sc-keystore 2.0.0-alpha.6 is already in cache
[INFO] checking sc-keystore-2.0.0-alpha.6 against master#0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf for pr-71814
[INFO] extracting crate sc-keystore 2.0.0-alpha.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sc-keystore 2.0.0-alpha.6 on toolchain 0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sc-keystore 2.0.0-alpha.6
[INFO] finished tweaking crates.io crate sc-keystore 2.0.0-alpha.6
[INFO] tweaked toml for crates.io crate sc-keystore 2.0.0-alpha.6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "+0a675c5e02e6ecfda7d4e04aabd23a9935e0c4bf" "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] 81f1feba0e991d23b07d2295e247163fbf4c822fc0f8ba2a4f245ed9e5590824
[INFO] running `"docker" "start" "-a" "81f1feba0e991d23b07d2295e247163fbf4c822fc0f8ba2a4f245ed9e5590824"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking curve25519-dalek v2.0.0
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking schnorrkel v0.9.1
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]     Checking substrate-bip39 v0.4.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking sp-core v2.0.0-alpha.7
[INFO] [stderr]     Checking sp-trie v2.0.0-alpha.7
[INFO] [stderr]     Checking sp-state-machine v0.8.0-alpha.7
[INFO] [stderr]     Checking sp-io v2.0.0-alpha.7
[INFO] [stderr]     Checking sp-application-crypto v2.0.0-alpha.7
[INFO] [stderr]     Checking sc-keystore v2.0.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `tempfile`
[INFO] [stderr]    --> src/lib.rs:415:6
[INFO] [stderr]     |
[INFO] [stderr] 415 |     use tempfile::TempDir;
[INFO] [stderr]     |         ^^^^^^^^ use of undeclared type or module `tempfile`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `sc-keystore`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "81f1feba0e991d23b07d2295e247163fbf4c822fc0f8ba2a4f245ed9e5590824"`
[INFO] running `"docker" "rm" "-f" "81f1feba0e991d23b07d2295e247163fbf4c822fc0f8ba2a4f245ed9e5590824"`
[INFO] [stdout] 81f1feba0e991d23b07d2295e247163fbf4c822fc0f8ba2a4f245ed9e5590824