[INFO] fetching crate substrate-differ 0.13.0...
[INFO] checking substrate-differ-0.13.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate substrate-differ 0.13.0 into /workspace/builds/worker-67/source
[INFO] validating manifest of crates.io crate substrate-differ 0.13.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate substrate-differ 0.13.0
[INFO] finished tweaking crates.io crate substrate-differ 0.13.0
[INFO] tweaked toml for crates.io crate substrate-differ 0.13.0 written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 950e06571914354a3cf58be74ca6081292f7048c455c8a8a913e688b684d4145
[INFO] running `Command { std: "docker" "start" "-a" "950e06571914354a3cf58be74ca6081292f7048c455c8a8a913e688b684d4145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "950e06571914354a3cf58be74ca6081292f7048c455c8a8a913e688b684d4145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "950e06571914354a3cf58be74ca6081292f7048c455c8a8a913e688b684d4145", kill_on_drop: false }`
[INFO] [stdout] 950e06571914354a3cf58be74ca6081292f7048c455c8a8a913e688b684d4145
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a96beda01180f40329bc20606dd17539ff4a5fdc5802fff084a9341ceb1b48b
[INFO] running `Command { std: "docker" "start" "-a" "3a96beda01180f40329bc20606dd17539ff4a5fdc5802fff084a9341ceb1b48b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]     Checking futures-sink v0.3.18
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]     Checking futures-io v0.3.18
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking byte-slice-cast v1.2.0
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking sp-std v3.0.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]    Compiling parity-util-mem v0.9.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling zstd-safe v3.0.1+zstd.1.4.9
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]     Checking unsigned-varint v0.7.1
[INFO] [stderr]     Checking base-x v0.2.8
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling blake2-rfc v0.2.18
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking fixed-hash v0.7.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking pbkdf2 v0.4.0
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking uint v0.9.1
[INFO] [stderr]     Checking blake2s_simd v0.5.11
[INFO] [stderr]     Checking blake2b_simd v0.5.11
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking libsecp256k1 v0.3.5
[INFO] [stderr]     Checking bitvec v0.20.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking num-format v0.4.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking indexmap v1.7.0
[INFO] [stderr]     Checking trie-db v0.22.6
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling zstd-sys v1.4.20+zstd.1.4.9
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]     Checking sp-panic-handler v3.0.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling syn-mid v0.5.3
[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-1.0.82/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="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=7a6d0df92756c64f -C extra-filename=-7a6d0df92756c64f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-7592264899f58233.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-33f6fbe9bba2a178.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" "3a96beda01180f40329bc20606dd17539ff4a5fdc5802fff084a9341ceb1b48b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a96beda01180f40329bc20606dd17539ff4a5fdc5802fff084a9341ceb1b48b", kill_on_drop: false }`
[INFO] [stdout] 3a96beda01180f40329bc20606dd17539ff4a5fdc5802fff084a9341ceb1b48b