[INFO] updating cached repository https://github.com/rust-lang-nursery/crater
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4a29da2a3edecfc173cf1b7cd97b4aca38203dd
[INFO] testing rust-lang-nursery/crater against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Fcrater" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang-nursery/crater on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-lang-nursery/crater
[INFO] finished tweaking git repo https://github.com/rust-lang-nursery/crater
[INFO] tweaked toml for git repo https://github.com/rust-lang-nursery/crater written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang-nursery/crater already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "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] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e511b5bce9ae30ba1f3a2439f0521e93aef21870efb0a4942ed1296c190a86bc
[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" "e511b5bce9ae30ba1f3a2439f0521e93aef21870efb0a4942ed1296c190a86bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e511b5bce9ae30ba1f3a2439f0521e93aef21870efb0a4942ed1296c190a86bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e511b5bce9ae30ba1f3a2439f0521e93aef21870efb0a4942ed1296c190a86bc", kill_on_drop: false }`
[INFO] [stdout] e511b5bce9ae30ba1f3a2439f0521e93aef21870efb0a4942ed1296c190a86bc
[INFO] running `Command { std: "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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 793a693ecc519905482591e4603c1b68cba89a0556d5a7929dff507efbfad654
[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" "793a693ecc519905482591e4603c1b68cba89a0556d5a7929dff507efbfad654", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling arc-swap v0.4.6
[INFO] [stderr]    Compiling byte-tools v0.3.0
[INFO] [stderr]    Compiling arc-swap v0.3.4
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling opaque-debug v0.2.1
[INFO] [stderr]    Compiling base64 v0.12.1
[INFO] [stderr]    Compiling prometheus v0.7.0
[INFO] [stderr]    Compiling rustwide v0.8.0
[INFO] [stderr]    Compiling utf-8 v0.7.4
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling macro-utils v0.1.2
[INFO] [stderr]    Compiling crater v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling urlencoding v1.0.0
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling curl-sys v0.4.13
[INFO] [stderr]    Compiling libsqlite3-sys v0.10.0
[INFO] [stderr]    Compiling libgit2-sys v0.7.10
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]    Compiling scheduled-thread-pool v0.2.0
[INFO] [stderr]    Compiling walkdir v2.2.9
[INFO] [stderr]    Compiling slug v0.1.4
[INFO] [stderr]    Compiling block-padding v0.1.2
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tokio-timer v0.2.7
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling encoding_rs v0.8.10
[INFO] [stderr]    Compiling unic-ucd-segment v0.7.0
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]    Compiling r2d2 v0.8.3
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling mime v0.3.12
[INFO] [stderr]    Compiling crypto-mac v0.5.2
[INFO] [stderr]    Compiling block-buffer v0.7.0
[INFO] [stderr]    Compiling libflate v0.1.18
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.1
[INFO] [stderr]    Compiling syn v0.15.18
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling hmac v0.5.0
[INFO] [stderr]    Compiling sha-1 v0.8.0
[INFO] [stderr]    Compiling unic-segment v0.7.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling socket2 v0.3.8
[INFO] [stderr]    Compiling dirs v1.0.4
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling signal-hook v0.1.5
[INFO] [stderr]    Compiling filetime v0.2.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling bytes v0.4.10
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.8
[INFO] [stderr]    Compiling tempfile v3.0.4
[INFO] [stderr]    Compiling uuid v0.7.1
[INFO] [stderr]    Compiling flate2 v1.0.4
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling tar v0.4.17
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling tokio-io v0.1.10
[INFO] [stderr]    Compiling http v0.1.13
[INFO] [stderr]    Compiling input_buffer v0.2.0
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tungstenite v0.6.1
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.4
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]    Compiling tokio v0.2.21
[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-1.0.30/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --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=ea012becf77cd4aa -C extra-filename=-ea012becf77cd4aa --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-a669d078a46dfaad.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-af038dfe44bbadb9.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-0fad61cf7bb3c59c.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (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" "793a693ecc519905482591e4603c1b68cba89a0556d5a7929dff507efbfad654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "793a693ecc519905482591e4603c1b68cba89a0556d5a7929dff507efbfad654", kill_on_drop: false }`
[INFO] [stdout] 793a693ecc519905482591e4603c1b68cba89a0556d5a7929dff507efbfad654