[INFO] updating cached repository https://github.com/paritytech/cargo-contract
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 47befe5ca0713edc5c7d156c5dbdde58a32655a3
[INFO] checking paritytech/cargo-contract against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fparitytech%2Fcargo-contract" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paritytech/cargo-contract on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/paritytech/cargo-contract
[INFO] finished tweaking git repo https://github.com/paritytech/cargo-contract
[INFO] tweaked toml for git repo https://github.com/paritytech/cargo-contract written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/paritytech/cargo-contract already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a72edff23b2117b29e76dbb6dd8c68ad9b5225836ca7696281caa13591cef880
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "a72edff23b2117b29e76dbb6dd8c68ad9b5225836ca7696281caa13591cef880"`
[INFO] [stderr]    Compiling podio v0.1.6
[INFO] [stderr]    Compiling cargo-xbuild v0.5.28
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking bitvec v0.15.2
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking assert_matches v1.3.0
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking heck v0.3.1
[INFO] [stderr]    Compiling wabt-sys v0.7.0
[INFO] [stderr]     Checking anyhow v1.0.26
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking zip v0.5.4
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rustc_version v0.2.3
[INFO] [stderr]     Checking which v3.1.0
[INFO] [stderr]    Compiling cargo-contract v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pwasm-utils v0.12.0
[INFO] [stderr]     Checking parity-scale-codec v1.2.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[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-1.0.16/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -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=06109cd756f3aa99 -C extra-filename=-06109cd756f3aa99 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-22598ef6c87da0f4.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e8a56b2f3e336d93.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-84e692c0da359216.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 `"docker" "inspect" "a72edff23b2117b29e76dbb6dd8c68ad9b5225836ca7696281caa13591cef880"`
[INFO] running `"docker" "rm" "-f" "a72edff23b2117b29e76dbb6dd8c68ad9b5225836ca7696281caa13591cef880"`
[INFO] [stdout] a72edff23b2117b29e76dbb6dd8c68ad9b5225836ca7696281caa13591cef880