[INFO] fetching crate ludusavi 0.7.0...
[INFO] testing ludusavi-0.7.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate ludusavi 0.7.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate ludusavi 0.7.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking crates.io crate ludusavi 0.7.0
[INFO] finished tweaking crates.io crate ludusavi 0.7.0
[INFO] tweaked toml for crates.io crate ludusavi 0.7.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate ludusavi 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wfd v0.1.3
[INFO] [stderr]   Downloaded native-dialog v0.3.0
[INFO] [stderr]   Downloaded realia v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cc5f68d3b56fc682445bfc69e323b694a1679acf5ca52a9247fe783ca2c57ab
[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" "6cc5f68d3b56fc682445bfc69e323b694a1679acf5ca52a9247fe783ca2c57ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cc5f68d3b56fc682445bfc69e323b694a1679acf5ca52a9247fe783ca2c57ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc5f68d3b56fc682445bfc69e323b694a1679acf5ca52a9247fe783ca2c57ab", kill_on_drop: false }`
[INFO] [stdout] 6cc5f68d3b56fc682445bfc69e323b694a1679acf5ca52a9247fe783ca2c57ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a34bd7cb7868f2f5ad204acf5e17f94a0db901d453b9968aa1166acd97edfca2
[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" "a34bd7cb7868f2f5ad204acf5e17f94a0db901d453b9968aa1166acd97edfca2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling cc v1.0.57
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling smallvec v1.4.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling bytes v0.5.5
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling atom v0.3.5
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling colorful v0.2.1
[INFO] [stderr]    Compiling xi-unicode v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling copyless v0.1.5
[INFO] [stderr]    Compiling iced_core v0.2.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling tinyvec v0.3.3
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling glam v0.8.7
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling svg_fmt v0.2.1
[INFO] [stderr]    Compiling target-spec v0.4.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.23
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling instant v0.1.6
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling bytemuck v1.2.0
[INFO] [stderr]    Compiling utf8-width v0.1.3
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling number_prefix v0.3.0
[INFO] [stderr]    Compiling ludusavi v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling whoami v0.9.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling lock_api v0.3.4
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling cfg-expr v0.4.1
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling hibitset v0.6.3
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling iced_style v0.1.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.13
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling byte-unit v4.0.8
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling relevant v0.4.2
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling termios v0.3.2
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling terminal_size v0.1.13
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling wayland-sys v0.26.6
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling wayland-scanner v0.26.6
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling euclid v0.20.14
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling gfx-hal v0.4.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling ash v0.29.0
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling console v0.11.3
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling dirs v3.0.1
[INFO] [stderr]    Compiling xcursor v0.3.2
[INFO] [stderr]    Compiling wayland-commons v0.23.6
[INFO] [stderr]    Compiling wayland-commons v0.26.6
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling lyon_geom v0.14.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling gfx-backend-empty v0.4.0
[INFO] [stderr]    Compiling rendy-descriptor v0.5.1
[INFO] [stderr]    Compiling rendy-memory v0.5.2
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling wayland-client v0.26.6
[INFO] [stderr]    Compiling wayland-protocols v0.26.6
[INFO] [stderr]    Compiling freetype v0.4.1
[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-1.0.33/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -Cembed-bitcode=no -C debuginfo=2 -C debug-assertions=on --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"' --cfg 'feature="visit-mut"' -C metadata=c9aef79369c22ef3 -C extra-filename=-c9aef79369c22ef3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-e49bc5f7c5a71339.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-74c532ec828a3a9b.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-f4ebdb4f457ad21d.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" "a34bd7cb7868f2f5ad204acf5e17f94a0db901d453b9968aa1166acd97edfca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34bd7cb7868f2f5ad204acf5e17f94a0db901d453b9968aa1166acd97edfca2", kill_on_drop: false }`
[INFO] [stdout] a34bd7cb7868f2f5ad204acf5e17f94a0db901d453b9968aa1166acd97edfca2