[INFO] fetching crate microwave 0.25.0...
[INFO] testing microwave-0.25.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate microwave 0.25.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate microwave 0.25.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microwave 0.25.0
[INFO] finished tweaking crates.io crate microwave 0.25.0
[INFO] tweaked toml for crates.io crate microwave 0.25.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate microwave 0.25.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-bigint v0.3.3
[INFO] [stderr]   Downloaded euclid v0.20.14
[INFO] [stderr]   Downloaded wayland-sys v0.23.6
[INFO] [stderr]   Downloaded daggy v0.5.0
[INFO] [stderr]   Downloaded wayland-protocols v0.23.6
[INFO] [stderr]   Downloaded quick-xml v0.22.0
[INFO] [stderr]   Downloaded combine v4.6.2
[INFO] [stderr]   Downloaded ordered-float v1.1.1
[INFO] [stderr]   Downloaded ndk v0.4.0
[INFO] [stderr]   Downloaded oboe v0.4.4
[INFO] [stderr]   Downloaded line_drawing v0.7.0
[INFO] [stderr]   Downloaded fluid-xenth v0.2.0
[INFO] [stderr]   Downloaded wayland-commons v0.23.6
[INFO] [stderr]   Downloaded cgmath v0.17.0
[INFO] [stderr]   Downloaded tune-cli v0.21.0
[INFO] [stderr]   Downloaded fixedbitset v0.1.9
[INFO] [stderr]   Downloaded jni v0.19.0
[INFO] [stderr]   Downloaded ndk-glue v0.4.0
[INFO] [stderr]   Downloaded alsa v0.5.0
[INFO] [stderr]   Downloaded coreaudio-rs v0.10.0
[INFO] [stderr]   Downloaded slotmap v0.4.3
[INFO] [stderr]   Downloaded nannou v0.16.0
[INFO] [stderr]   Downloaded conrod_wgpu v0.72.0
[INFO] [stderr]   Downloaded palette_derive v0.5.0
[INFO] [stderr]   Downloaded andrew v0.2.1
[INFO] [stderr]   Downloaded fluidlite v0.2.1
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.6.6
[INFO] [stderr]   Downloaded smithay-clipboard v0.4.0
[INFO] [stderr]   Downloaded x11-clipboard v0.5.3
[INFO] [stderr]   Downloaded conrod_core v0.72.0
[INFO] [stderr]   Downloaded lyon_tessellation v0.15.9
[INFO] [stderr]   Downloaded palette v0.5.0
[INFO] [stderr]   Downloaded ringbuf v0.2.6
[INFO] [stderr]   Downloaded wayland-client v0.23.6
[INFO] [stderr]   Downloaded tune v0.27.0
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.8
[INFO] [stderr]   Downloaded cesu8 v1.1.0
[INFO] [stderr]   Downloaded notosans v0.1.0
[INFO] [stderr]   Downloaded fluidlite-sys v0.2.1
[INFO] [stderr]   Downloaded oboe-sys v0.4.4
[INFO] [stderr]   Downloaded cpal v0.13.4
[INFO] [stderr]   Downloaded gif v0.11.3
[INFO] [stderr]   Downloaded image v0.18.0
[INFO] [stderr]   Downloaded piston-viewport v1.0.1
[INFO] [stderr]   Downloaded wayland-scanner v0.23.6
[INFO] [stderr]   Downloaded noise v0.6.0
[INFO] [stderr]   Downloaded lyon_algorithms v0.15.1
[INFO] [stderr]   Downloaded lyon v0.15.9
[INFO] [stderr]   Downloaded piston-float v1.0.1
[INFO] [stderr]   Downloaded conrod_derive v0.72.0
[INFO] [stderr]   Downloaded xcb v0.10.1
[INFO] [stderr]   Downloaded petgraph v0.4.13
[INFO] [stderr]   Downloaded serde_json v1.0.70
[INFO] [stderr]   Downloaded libloading v0.7.1
[INFO] [stderr]   Downloaded copypasta v0.6.3
[INFO] [stderr]   Downloaded pistoncore-input v1.0.1
[INFO] [stderr]   Downloaded conrod_winit v0.72.0
[INFO] [stderr]   Downloaded pennereq v0.3.1
[INFO] [stderr]   Downloaded daggy v0.6.0
[INFO] [stderr]   Downloaded lyon_geom v0.15.3
[INFO] [stderr]   Downloaded gpu-alloc v0.3.2
[INFO] [stderr]   Downloaded lyon_path v0.15.2
[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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 365c3085e3635a9ccab7166f8132b6766a5253efb1b6090149085a22043f4cbb
[INFO] running `Command { std: "docker" "start" "-a" "365c3085e3635a9ccab7166f8132b6766a5253efb1b6090149085a22043f4cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "365c3085e3635a9ccab7166f8132b6766a5253efb1b6090149085a22043f4cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "365c3085e3635a9ccab7166f8132b6766a5253efb1b6090149085a22043f4cbb", kill_on_drop: false }`
[INFO] [stdout] 365c3085e3635a9ccab7166f8132b6766a5253efb1b6090149085a22043f4cbb
[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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e5708105e26da4393b3d801302a96866c0ccbaa18e6f4edbda53a0d2c63d36c
[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" "3e5708105e26da4393b3d801302a96866c0ccbaa18e6f4edbda53a0d2c63d36c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling smallvec v1.7.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling slab v0.4.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.70
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling cpal v0.13.4
[INFO] [stderr]    Compiling tune v0.27.0
[INFO] [stderr]    Compiling memalloc v0.1.0
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling conrod_winit v0.72.0
[INFO] [stderr]    Compiling notosans v0.1.0
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling libloading v0.7.1
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling gpu-descriptor-types v0.1.1
[INFO] [stderr]    Compiling gpu-alloc-types v0.2.0
[INFO] [stderr]    Compiling wgpu-types v0.7.0
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling tracing-core v0.1.21
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling gif v0.11.3
[INFO] [stderr]    Compiling ringbuf v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling ash v0.31.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling dlib v0.5.0
[INFO] [stderr]    Compiling rusttype v0.9.2
[INFO] [stderr]    Compiling daggy v0.6.0
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling wayland-sys v0.23.6
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling wayland-scanner v0.28.6
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling quick-xml v0.22.0
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling spirv_headers v1.5.0
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling euclid v0.20.14
[INFO] [stderr]    Compiling sid v0.6.1
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling pennereq v0.3.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling raw-window-handle v0.3.3
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling khronos-egl v3.0.2
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling memmap2 v0.1.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling x11-dl v2.19.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling xcb v0.10.1
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling wayland-client v0.28.6
[INFO] [stderr]    Compiling wayland-protocols v0.28.6
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling spirv_cross v0.23.1
[INFO] [stderr]    Compiling fluidlite-sys v0.2.1
[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-1.0.65/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"' --cfg 'feature="visit-mut"' -C metadata=0d3d2c6350a71b18 -C extra-filename=-0d3d2c6350a71b18 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-9dbaaf035d6d15d1.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0bcba2a61b67309f.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.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" "3e5708105e26da4393b3d801302a96866c0ccbaa18e6f4edbda53a0d2c63d36c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e5708105e26da4393b3d801302a96866c0ccbaa18e6f4edbda53a0d2c63d36c", kill_on_drop: false }`
[INFO] [stdout] 3e5708105e26da4393b3d801302a96866c0ccbaa18e6f4edbda53a0d2c63d36c