[INFO] fetching crate ic-certified-assets 0.1.0...
[INFO] checking ic-certified-assets-0.1.0 against master#30b3f35c420694a4f24e5a4df00f06073f4f3a37 for pr-94081
[INFO] extracting crate ic-certified-assets 0.1.0 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate ic-certified-assets 0.1.0 on toolchain 30b3f35c420694a4f24e5a4df00f06073f4f3a37
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+30b3f35c420694a4f24e5a4df00f06073f4f3a37" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ic-certified-assets 0.1.0
[INFO] finished tweaking crates.io crate ic-certified-assets 0.1.0
[INFO] tweaked toml for crates.io crate ic-certified-assets 0.1.0 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+30b3f35c420694a4f24e5a4df00f06073f4f3a37" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+30b3f35c420694a4f24e5a4df00f06073f4f3a37" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+30b3f35c420694a4f24e5a4df00f06073f4f3a37" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb33207e56cf9ace84cbd1a18128851df94dc8528e31bac551c6ff63d7dd4904
[INFO] running `Command { std: "docker" "start" "-a" "cb33207e56cf9ace84cbd1a18128851df94dc8528e31bac551c6ff63d7dd4904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb33207e56cf9ace84cbd1a18128851df94dc8528e31bac551c6ff63d7dd4904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb33207e56cf9ace84cbd1a18128851df94dc8528e31bac551c6ff63d7dd4904", kill_on_drop: false }`
[INFO] [stdout] cb33207e56cf9ace84cbd1a18128851df94dc8528e31bac551c6ff63d7dd4904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+30b3f35c420694a4f24e5a4df00f06073f4f3a37" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a238c1fe7acaddc631f2286b9082156ca4435c51078f3e53961f73ad901059f3
[INFO] running `Command { std: "docker" "start" "-a" "a238c1fe7acaddc631f2286b9082156ca4435c51078f3e53961f73ad901059f3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling siphasher v0.3.9
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling base32 v0.4.0
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling itertools v0.10.3
[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-1.0.86/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"' -C metadata=edbbf51d50b9a7bb -C extra-filename=-edbbf51d50b9a7bb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d937f1f82ffb437d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-4040e84c0ddb8645.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" "a238c1fe7acaddc631f2286b9082156ca4435c51078f3e53961f73ad901059f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a238c1fe7acaddc631f2286b9082156ca4435c51078f3e53961f73ad901059f3", kill_on_drop: false }`
[INFO] [stdout] a238c1fe7acaddc631f2286b9082156ca4435c51078f3e53961f73ad901059f3