[INFO] crate ffsend 0.2.55 is already in cache
[INFO] checking ffsend-0.2.55 against master#2da942f32802c8233a09744024dfbc34431adf65 for pr-66963
[INFO] extracting crate ffsend 0.2.55 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ffsend 0.2.55 on toolchain 2da942f32802c8233a09744024dfbc34431adf65
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ffsend 0.2.55
[INFO] finished tweaking crates.io crate ffsend 0.2.55
[INFO] tweaked toml for crates.io crate ffsend 0.2.55 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate ffsend 0.2.55 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2b6560f4778c04d59b6e5eafaf8d38176026d013676e1884a524c828ba1b0d58
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "2b6560f4778c04d59b6e5eafaf8d38176026d013676e1884a524c828ba1b0d58"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling derive_builder v0.6.0
[INFO] [stderr]    Compiling derive_builder v0.8.0
[INFO] [stderr]     Checking checked_int_cast v1.0.0
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking version-compare v0.0.10
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]    Compiling ffsend v0.2.55 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking pathdiff v0.1.0
[INFO] [stderr]     Checking version-compare v0.0.9
[INFO] [stderr]     Checking open v1.3.2
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling openssl-sys v0.9.52
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking qrcode v0.11.0
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking crossterm_utils v0.2.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking flate2 v1.0.12
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking pbr v1.0.2
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking crossterm_style v0.4.1
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking urlshortener v2.0.0
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking tar v0.4.26
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking crossterm v0.10.2
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking http v0.1.19
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking hkdf v0.7.1
[INFO] [stderr]     Checking cgmath v0.16.1
[INFO] [stderr]     Checking qr2term v0.1.4
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling openssl v0.10.25
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking websocket v0.23.0
[INFO] [stderr]    Compiling darling_core v0.6.3
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling darling_core v0.10.1
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -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=a5fb26586a924a3d -C extra-filename=-a5fb26586a924a3d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-bdabc2b42f8c6888.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-9196c85a024074f4.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-0f9d88f8a0c805d7.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 `"docker" "inspect" "2b6560f4778c04d59b6e5eafaf8d38176026d013676e1884a524c828ba1b0d58"`
[INFO] running `"docker" "rm" "-f" "2b6560f4778c04d59b6e5eafaf8d38176026d013676e1884a524c828ba1b0d58"`
[INFO] [stdout] 2b6560f4778c04d59b6e5eafaf8d38176026d013676e1884a524c828ba1b0d58