[INFO] fetching crate ic-cdk-optimizer 0.3.2...
[INFO] checking ic-cdk-optimizer-0.3.2 against 1.55.0 for beta-1.56-3
[INFO] extracting crate ic-cdk-optimizer 0.3.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate ic-cdk-optimizer 0.3.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ic-cdk-optimizer 0.3.2
[INFO] finished tweaking crates.io crate ic-cdk-optimizer 0.3.2
[INFO] tweaked toml for crates.io crate ic-cdk-optimizer 0.3.2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate ic-cdk-optimizer 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] ffd238e8a377dd0ba5d0a5f03f285a4aa6d3464bb3c378d15fd46182af7e9482
[INFO] running `Command { std: "docker" "start" "-a" "ffd238e8a377dd0ba5d0a5f03f285a4aa6d3464bb3c378d15fd46182af7e9482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffd238e8a377dd0ba5d0a5f03f285a4aa6d3464bb3c378d15fd46182af7e9482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffd238e8a377dd0ba5d0a5f03f285a4aa6d3464bb3c378d15fd46182af7e9482", kill_on_drop: false }`
[INFO] [stdout] ffd238e8a377dd0ba5d0a5f03f285a4aa6d3464bb3c378d15fd46182af7e9482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5b81471697a6eac34b5a43aa89887eaa79b26125432a0d7f344aaba8f654465
[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" "d5b81471697a6eac34b5a43aa89887eaa79b26125432a0d7f344aaba8f654465", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling wabt-sys v0.8.0
[INFO] [stderr]    Compiling binaryen-sys v0.12.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[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-1.0.76/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"' -C metadata=6d08b5070fc8ce47 -C extra-filename=-6d08b5070fc8ce47 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-06e97d6f0dfb172f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1b457121b46aa6b0.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-5ecee5fca1210f52.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "d5b81471697a6eac34b5a43aa89887eaa79b26125432a0d7f344aaba8f654465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5b81471697a6eac34b5a43aa89887eaa79b26125432a0d7f344aaba8f654465", kill_on_drop: false }`
[INFO] [stdout] d5b81471697a6eac34b5a43aa89887eaa79b26125432a0d7f344aaba8f654465
