[INFO] fetching crate cargo-contract 0.7.1...
[INFO] checking cargo-contract-0.7.1 against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] extracting crate cargo-contract 0.7.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cargo-contract 0.7.1 on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-contract 0.7.1
[INFO] finished tweaking crates.io crate cargo-contract 0.7.1
[INFO] tweaked toml for crates.io crate cargo-contract 0.7.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate cargo-contract 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sp-utils v2.0.0
[INFO] [stderr]   Downloaded sc-rpc-api v0.8.0
[INFO] [stderr]   Downloaded pwasm-utils v0.14.0
[INFO] [stderr]   Downloaded jsonrpsee-proc-macros v0.1.0
[INFO] [stderr]   Downloaded jsonrpsee v0.1.0
[INFO] [stderr]   Downloaded sp-database v2.0.0
[INFO] [stderr]   Downloaded frame-metadata v11.0.0-rc6
[INFO] [stderr]   Downloaded sp-chain-spec v2.0.0
[INFO] [stderr]   Downloaded sp-keyring v2.0.0
[INFO] [stderr]   Downloaded soketto v0.3.2
[INFO] [stderr]   Downloaded pallet-indices v2.0.0
[INFO] [stderr]   Downloaded sp-rpc v2.0.0
[INFO] [stderr]   Downloaded sp-block-builder v2.0.0
[INFO] [stderr]   Downloaded substrate-prometheus-endpoint v0.8.0
[INFO] [stderr]   Downloaded sp-consensus v0.8.0
[INFO] [stderr]   Downloaded sp-blockchain v2.0.0
[INFO] [stderr]   Downloaded kvdb v0.7.0
[INFO] [stderr]   Downloaded sp-transaction-pool v2.0.0
[INFO] [stderr]   Downloaded contract-metadata v0.1.0
[INFO] [stderr]   Downloaded substrate-subxt-proc-macro v0.11.0
[INFO] [stderr]   Downloaded cargo-xbuild v0.6.2
[INFO] [stderr]   Downloaded substrate-subxt v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d085617c8323dad0e75fab17c0b8970b17528134a6806868367ec3abbeb1438
[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" "0d085617c8323dad0e75fab17c0b8970b17528134a6806868367ec3abbeb1438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d085617c8323dad0e75fab17c0b8970b17528134a6806868367ec3abbeb1438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d085617c8323dad0e75fab17c0b8970b17528134a6806868367ec3abbeb1438", kill_on_drop: false }`
[INFO] [stdout] 0d085617c8323dad0e75fab17c0b8970b17528134a6806868367ec3abbeb1438
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0025bafe4ce607bc40013c080a812c1fdaed2472cc91c608d75eedfec11b0bb4
[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" "0025bafe4ce607bc40013c080a812c1fdaed2472cc91c608d75eedfec11b0bb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]    Compiling cargo-xbuild v0.6.2
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking assert_matches v1.4.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking pwasm-utils v0.14.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking blake2 v0.9.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling wabt-sys v0.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.44/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=248b8f744ebde9ec -C extra-filename=-248b8f744ebde9ec --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8a8bb825df9136cb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-944c052ceb08ffd8.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-083414e3434d8e82.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0025bafe4ce607bc40013c080a812c1fdaed2472cc91c608d75eedfec11b0bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0025bafe4ce607bc40013c080a812c1fdaed2472cc91c608d75eedfec11b0bb4", kill_on_drop: false }`
[INFO] [stdout] 0025bafe4ce607bc40013c080a812c1fdaed2472cc91c608d75eedfec11b0bb4