[INFO] fetching crate silkworm_syn 0.1.0-dev.1...
[INFO] checking silkworm_syn-0.1.0-dev.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate silkworm_syn 0.1.0-dev.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate silkworm_syn 0.1.0-dev.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate silkworm_syn 0.1.0-dev.1
[INFO] finished tweaking crates.io crate silkworm_syn 0.1.0-dev.1
[INFO] tweaked toml for crates.io crate silkworm_syn 0.1.0-dev.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded silkworm_sourcemap v0.1.0-dev.1
[INFO] [stderr]   Downloaded silkworm_err v0.1.0-dev.1
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c0e0d27b77cb27bb499421223f9f3ece3161ddace80e8914f1ba0733e4df5a4
[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" "6c0e0d27b77cb27bb499421223f9f3ece3161ddace80e8914f1ba0733e4df5a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c0e0d27b77cb27bb499421223f9f3ece3161ddace80e8914f1ba0733e4df5a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c0e0d27b77cb27bb499421223f9f3ece3161ddace80e8914f1ba0733e4df5a4", kill_on_drop: false }`
[INFO] [stdout] 6c0e0d27b77cb27bb499421223f9f3ece3161ddace80e8914f1ba0733e4df5a4
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] 8805b7259d0db7c830b55bf16865049829b589af5e7fb2214dc2bcedf3b66108
[INFO] running `Command { std: "docker" "start" "-a" "8805b7259d0db7c830b55bf16865049829b589af5e7fb2214dc2bcedf3b66108", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling arraydeque v0.4.5
[INFO] [stderr]     Checking rustc-demangle v0.1.17
[INFO] [stderr]     Checking silkworm_sourcemap v0.1.0-dev.1
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]     Checking backtrace v0.3.51
[INFO] [stderr]     Checking silkworm_err v0.1.0-dev.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking silkworm_syn v0.1.0-dev.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.54s
[INFO] running `Command { std: "docker" "inspect" "8805b7259d0db7c830b55bf16865049829b589af5e7fb2214dc2bcedf3b66108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8805b7259d0db7c830b55bf16865049829b589af5e7fb2214dc2bcedf3b66108", kill_on_drop: false }`
[INFO] [stdout] 8805b7259d0db7c830b55bf16865049829b589af5e7fb2214dc2bcedf3b66108