[INFO] cloning repository https://github.com/x2x4com/substrate_adv_homework
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/x2x4com/substrate_adv_homework" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fx2x4com%2Fsubstrate_adv_homework", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fx2x4com%2Fsubstrate_adv_homework'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ffc0d26ea9925ebea659871ff7458b101f3f57a9
[INFO] checking x2x4com/substrate_adv_homework against try#ef8c760c4c3d93b561a5b431502e92f4b4773aca for pr-92472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fx2x4com%2Fsubstrate_adv_homework" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/x2x4com/substrate_adv_homework on toolchain ef8c760c4c3d93b561a5b431502e92f4b4773aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ef8c760c4c3d93b561a5b431502e92f4b4773aca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/x2x4com/substrate_adv_homework
[INFO] finished tweaking git repo https://github.com/x2x4com/substrate_adv_homework
[INFO] tweaked toml for git repo https://github.com/x2x4com/substrate_adv_homework written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/x2x4com/substrate_adv_homework already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ef8c760c4c3d93b561a5b431502e92f4b4773aca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.74.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.74.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+ef8c760c4c3d93b561a5b431502e92f4b4773aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 940a53b10b4d31e66a2be03fc8ab270ea5ecb0cac2b40109cb0725e6221263a9
[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" "940a53b10b4d31e66a2be03fc8ab270ea5ecb0cac2b40109cb0725e6221263a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "940a53b10b4d31e66a2be03fc8ab270ea5ecb0cac2b40109cb0725e6221263a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "940a53b10b4d31e66a2be03fc8ab270ea5ecb0cac2b40109cb0725e6221263a9", kill_on_drop: false }`
[INFO] [stdout] 940a53b10b4d31e66a2be03fc8ab270ea5ecb0cac2b40109cb0725e6221263a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+ef8c760c4c3d93b561a5b431502e92f4b4773aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 4fb10e7380e3efa4bb1e0083c894c4dbb9cd12c426ae714e39268946e231fbb2
[INFO] running `Command { std: "docker" "start" "-a" "4fb10e7380e3efa4bb1e0083c894c4dbb9cd12c426ae714e39268946e231fbb2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.9.3
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[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]    Compiling build-helper v0.1.1
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[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling wasmtime-fiber v0.27.0
[INFO] [stderr]    Compiling wasmtime-runtime v0.27.0
[INFO] [stderr]    Compiling psm v0.1.13
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking fixed-hash v0.7.0
[INFO] [stderr]     Checking rand_distr v0.4.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]     Checking cuckoofilter v0.5.0
[INFO] [stderr]     Checking ghash v0.3.1
[INFO] [stderr]     Checking aes v0.5.0
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking aes-gcm v0.7.0
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking wasmi v0.9.0
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking ct-logs v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[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-1.0.73/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --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="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' -C metadata=b711261d557410b6 -C extra-filename=-b711261d557410b6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-84e45d9fd12cc146.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-00ff3cc53bb9440b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.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" "4fb10e7380e3efa4bb1e0083c894c4dbb9cd12c426ae714e39268946e231fbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fb10e7380e3efa4bb1e0083c894c4dbb9cd12c426ae714e39268946e231fbb2", kill_on_drop: false }`
[INFO] [stdout] 4fb10e7380e3efa4bb1e0083c894c4dbb9cd12c426ae714e39268946e231fbb2