[INFO] fetching crate sn0int 0.20.1...
[INFO] checking sn0int-0.20.1 against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] extracting crate sn0int 0.20.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate sn0int 0.20.1 on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sn0int 0.20.1
[INFO] finished tweaking crates.io crate sn0int 0.20.1
[INFO] tweaked toml for crates.io crate sn0int 0.20.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate sn0int 0.20.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9444b4cbdbd9eb8aade83b77f93dba1d443138d5e9a912058c55194c1041897
[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" "c9444b4cbdbd9eb8aade83b77f93dba1d443138d5e9a912058c55194c1041897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9444b4cbdbd9eb8aade83b77f93dba1d443138d5e9a912058c55194c1041897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9444b4cbdbd9eb8aade83b77f93dba1d443138d5e9a912058c55194c1041897", kill_on_drop: false }`
[INFO] [stdout] c9444b4cbdbd9eb8aade83b77f93dba1d443138d5e9a912058c55194c1041897
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1dd93836c9736572aa2f38a2d799db28a3f9e14dfb5ea7ff9336673f9147251
[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" "e1dd93836c9736572aa2f38a2d799db28a3f9e14dfb5ea7ff9336673f9147251", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling syn v1.0.62
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling oid-registry v0.1.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling seccomp-sys v0.1.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking robust v0.2.3
[INFO] [stderr]    Compiling embedded-triple v0.1.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking mutate_once v0.1.1
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking bs58 v0.4.0
[INFO] [stderr]     Checking strum v0.19.5
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking geographiclib-rs v0.2.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking kamadak-exif v0.5.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]    Compiling libsodium-sys v0.2.6
[INFO] [stderr]    Compiling lua52-sys v0.1.2
[INFO] [stderr]    Compiling syscallz v0.15.0
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking os-version v0.1.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking crypto-mac v0.10.0
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]     Checking sha-1 v0.9.4
[INFO] [stderr]     Checking md-5 v0.9.1
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking publicsuffix v1.5.6
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking heapless v0.5.6
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking pem v0.8.3
[INFO] [stderr]     Checking mqtt-protocol v0.10.0
[INFO] [stderr]     Checking shellwords v1.1.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking rstar v0.8.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking caps v0.3.4
[INFO] [stderr]     Checking hlua-badtouch v0.4.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking geo-types v0.6.2
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[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-1.0.62/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"' -C metadata=92ac5cb03d881fd7 -C extra-filename=-92ac5cb03d881fd7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-68d422dfc8864dc7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cfc781dd86a6c62d.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4182131ee577b5da.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" "e1dd93836c9736572aa2f38a2d799db28a3f9e14dfb5ea7ff9336673f9147251", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1dd93836c9736572aa2f38a2d799db28a3f9e14dfb5ea7ff9336673f9147251", kill_on_drop: false }`
[INFO] [stdout] e1dd93836c9736572aa2f38a2d799db28a3f9e14dfb5ea7ff9336673f9147251