[INFO] fetching crate jujube 0.1.1...
[INFO] checking jujube-0.1.1 against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] extracting crate jujube 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate jujube 0.1.1 on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jujube 0.1.1
[INFO] finished tweaking crates.io crate jujube 0.1.1
[INFO] tweaked toml for crates.io crate jujube 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate jujube 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded protobuf-codegen v2.18.1
[INFO] [stderr]   Downloaded jujube-lib v0.1.1
[INFO] [stderr]   Downloaded protobuf-codegen-pure v2.18.1
[INFO] [stderr]   Downloaded libgit2-sys v0.12.16+1.1.0
[INFO] [stderr]   Downloaded git2 v0.13.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2148eb0e7c38b540efcd407048a776c00d618816ba57f3d7df60f09be8b6485c
[INFO] running `Command { std: "docker" "start" "-a" "2148eb0e7c38b540efcd407048a776c00d618816ba57f3d7df60f09be8b6485c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2148eb0e7c38b540efcd407048a776c00d618816ba57f3d7df60f09be8b6485c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2148eb0e7c38b540efcd407048a776c00d618816ba57f3d7df60f09be8b6485c", kill_on_drop: false }`
[INFO] [stdout] 2148eb0e7c38b540efcd407048a776c00d618816ba57f3d7df60f09be8b6485c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c69823930dd4382cc3ca722d6595928fe77d39cd78c3016643b0d774d09f7a23
[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" "c69823930dd4382cc3ca722d6595928fe77d39cd78c3016643b0d774d09f7a23", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]    Compiling protobuf v2.18.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling zstd-safe v3.0.0+zstd.1.4.8
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking whoami v1.0.1
[INFO] [stderr]     Checking oorandom v11.1.2
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]    Compiling test-case v1.0.0
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking dirs v3.0.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]     Checking rand_core v0.6.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.8.0
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-integer v0.1.43
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking blake2 v0.9.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking backoff v0.2.1
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libssh2-sys v0.2.19
[INFO] [stderr]    Compiling zstd-sys v1.4.19+zstd.1.4.8
[INFO] [stderr]    Compiling libgit2-sys v0.12.16+1.1.0
[INFO] [stderr]     Checking protobuf-codegen v2.18.1
[INFO] [stderr]     Checking protobuf-codegen-pure v2.18.1
[INFO] [stderr]     Checking serde_json v1.0.60
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_cbor v0.11.1
[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-1.0.55/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=04b6dc02cd8370d8 -C extra-filename=-04b6dc02cd8370d8 --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-65304f056af28667.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" "c69823930dd4382cc3ca722d6595928fe77d39cd78c3016643b0d774d09f7a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c69823930dd4382cc3ca722d6595928fe77d39cd78c3016643b0d774d09f7a23", kill_on_drop: false }`
[INFO] [stdout] c69823930dd4382cc3ca722d6595928fe77d39cd78c3016643b0d774d09f7a23