[INFO] fetching crate cargo-contract 0.12.1...
[INFO] checking cargo-contract-0.12.1 against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] extracting crate cargo-contract 0.12.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cargo-contract 0.12.1 on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-contract 0.12.1
[INFO] finished tweaking crates.io crate cargo-contract 0.12.1
[INFO] tweaked toml for crates.io crate cargo-contract 0.12.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate cargo-contract 0.12.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded substrate-build-script-utils v3.0.0
[INFO] [stderr]   Downloaded contract-metadata v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ebc3b9b01417722c8e17f7d77ab42d651bd562d04f142c106d9cb46632488ba4
[INFO] running `Command { std: "docker" "start" "-a" "ebc3b9b01417722c8e17f7d77ab42d651bd562d04f142c106d9cb46632488ba4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebc3b9b01417722c8e17f7d77ab42d651bd562d04f142c106d9cb46632488ba4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc3b9b01417722c8e17f7d77ab42d651bd562d04f142c106d9cb46632488ba4", kill_on_drop: false }`
[INFO] [stdout] ebc3b9b01417722c8e17f7d77ab42d651bd562d04f142c106d9cb46632488ba4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc31b98860674f04bfd74acd615c26fa4d193f506db9b49123efc78386b6d97b
[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" "dc31b98860674f04bfd74acd615c26fa4d193f506db9b49123efc78386b6d97b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]    Compiling platforms v1.1.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling camino v1.0.2
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking tap v1.0.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking subtle v2.3.0
[INFO] [stderr]     Checking arrayvec v0.7.0
[INFO] [stderr]     Checking byte-slice-cast v1.0.0
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking parity-wasm v0.42.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling substrate-build-script-utils v3.0.0
[INFO] [stderr]     Checking bitvec v0.20.1
[INFO] [stderr]    Compiling wabt-sys v0.8.0
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking pwasm-utils v0.17.1
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]     Checking rand v0.8.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking tempfile v3.2.0
[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-1.0.60/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=46c3093ecc8ea257 -C extra-filename=-46c3093ecc8ea257 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1a6a39c3cd9b115f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1be2cecfcfd4ab86.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-accda8c4d770d472.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" "dc31b98860674f04bfd74acd615c26fa4d193f506db9b49123efc78386b6d97b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc31b98860674f04bfd74acd615c26fa4d193f506db9b49123efc78386b6d97b", kill_on_drop: false }`
[INFO] [stdout] dc31b98860674f04bfd74acd615c26fa4d193f506db9b49123efc78386b6d97b