[INFO] fetching crate lucet-wasi 0.6.1...
[INFO] checking lucet-wasi-0.6.1 against beta for pr-78714
[INFO] extracting crate lucet-wasi 0.6.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lucet-wasi 0.6.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lucet-wasi 0.6.1
[INFO] finished tweaking crates.io crate lucet-wasi 0.6.1
[INFO] tweaked toml for crates.io crate lucet-wasi 0.6.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate lucet-wasi 0.6.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d9fb906be609ad3278751e0cf28a773dbbe3c17ee3ad07d1a381a2cc75661da
[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" "3d9fb906be609ad3278751e0cf28a773dbbe3c17ee3ad07d1a381a2cc75661da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d9fb906be609ad3278751e0cf28a773dbbe3c17ee3ad07d1a381a2cc75661da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9fb906be609ad3278751e0cf28a773dbbe3c17ee3ad07d1a381a2cc75661da", kill_on_drop: false }`
[INFO] [stdout] 3d9fb906be609ad3278751e0cf28a773dbbe3c17ee3ad07d1a381a2cc75661da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a773e1a5529dba22b4c796e76e2c2dbfb45460a0a1c1e01f8f2f0e60deac7d0d
[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" "a773e1a5529dba22b4c796e76e2c2dbfb45460a0a1c1e01f8f2f0e60deac7d0d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling packed_struct v0.3.0
[INFO] [stderr]     Checking cranelift-entity v0.51.0
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling target-lexicon v0.9.0
[INFO] [stderr]    Compiling serde-big-array v0.2.0
[INFO] [stderr]     Checking parity-wasm v0.40.3
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling leb128 v0.2.4
[INFO] [stderr]     Checking wasmparser v0.39.3
[INFO] [stderr]     Checking human-size v0.4.0
[INFO] [stderr]    Compiling lucet-wasi v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling lucetc v0.6.1
[INFO] [stderr]     Checking siphasher v0.3.1
[INFO] [stderr]     Checking xfailure v0.1.0
[INFO] [stderr]     Checking bimap v0.2.0
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling lucet-runtime-internals v0.6.1
[INFO] [stderr]    Compiling lucet-runtime v0.6.1
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking wast v3.0.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking cranelift-bforest v0.51.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking num-rational v0.2.3
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]    Compiling wabt-sys v0.7.0
[INFO] [stderr]     Checking scrypt v0.2.0
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking goblin v0.0.24
[INFO] [stderr]     Checking getrandom v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking minisign v0.5.14
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[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-1.0.14/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="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=55eba4ba36be24d3 -C extra-filename=-55eba4ba36be24d3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-cca29f691eaa7111.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-ff5758c045625bdf.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-00e718d0d0f7c0e6.rmeta --cap-lints allow --cap-lints=forbid --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" "a773e1a5529dba22b4c796e76e2c2dbfb45460a0a1c1e01f8f2f0e60deac7d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a773e1a5529dba22b4c796e76e2c2dbfb45460a0a1c1e01f8f2f0e60deac7d0d", kill_on_drop: false }`
[INFO] [stdout] a773e1a5529dba22b4c796e76e2c2dbfb45460a0a1c1e01f8f2f0e60deac7d0d