[INFO] fetching crate fefast 0.1.0...
[INFO] checking fefast-0.1.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate fefast 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fefast 0.1.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fefast 0.1.0
[INFO] finished tweaking crates.io crate fefast 0.1.0
[INFO] tweaked toml for crates.io crate fefast 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccc440b5f3db84a283f09411473b9aa051c41471e5854b4d098ba59f3f622323
[INFO] running `Command { std: "docker" "start" "-a" "ccc440b5f3db84a283f09411473b9aa051c41471e5854b4d098ba59f3f622323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccc440b5f3db84a283f09411473b9aa051c41471e5854b4d098ba59f3f622323", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc440b5f3db84a283f09411473b9aa051c41471e5854b4d098ba59f3f622323", kill_on_drop: false }`
[INFO] [stdout] ccc440b5f3db84a283f09411473b9aa051c41471e5854b4d098ba59f3f622323
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ea044ab5101461ab774b4251f7f4bdd17c268b9002aa8bd9689b9561b4fa791
[INFO] running `Command { std: "docker" "start" "-a" "5ea044ab5101461ab774b4251f7f4bdd17c268b9002aa8bd9689b9561b4fa791", 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] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling build_const v0.2.2
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling bitflags v1.3.1
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking xmlparser v0.13.3
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling whoami v1.1.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking bitvec v0.18.5
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking futures-channel v0.3.16
[INFO] [stderr]     Checking crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling stringprep v0.1.2
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking atoi v0.4.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]     Checking roxmltree v0.14.1
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking sha-1 v0.9.7
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[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-1.0.74/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -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=b8c095cc48d84f0a -C extra-filename=-b8c095cc48d84f0a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-5838d18c3799ac43.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-98915fca26631896.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3d7133eb5e1c05de.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" "5ea044ab5101461ab774b4251f7f4bdd17c268b9002aa8bd9689b9561b4fa791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ea044ab5101461ab774b4251f7f4bdd17c268b9002aa8bd9689b9561b4fa791", kill_on_drop: false }`
[INFO] [stdout] 5ea044ab5101461ab774b4251f7f4bdd17c268b9002aa8bd9689b9561b4fa791