[INFO] updating cached repository https://github.com/amethyst/pong_wasm
[INFO] running `"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"`
[INFO] [stderr] From https://github.com/amethyst/pong_wasm
[INFO] [stderr]  - [deleted]         (none)     -> feature/2195/audio
[INFO] [stderr]    d74e725..2f36453  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2f36453c4b7cf8866d6ecec2e0a86ddefd3e6e80
[INFO] checking amethyst/pong_wasm against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famethyst%2Fpong_wasm" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amethyst/pong_wasm on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/amethyst/pong_wasm
[INFO] finished tweaking git repo https://github.com/amethyst/pong_wasm
[INFO] tweaked toml for git repo https://github.com/amethyst/pong_wasm written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/amethyst/pong_wasm already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-14/source/src/main.rs
[INFO] [stderr]     Updating git repository `https://github.com/amethyst/amethyst.git`
[INFO] [stderr]     Updating git repository `https://github.com/amethyst/cpal`
[INFO] [stderr]     Updating git repository `https://github.com/amethyst/rodio`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 46cd9386a50f53a36bc686a6cf4495600d01b2514641655f8b304b2cdbf824ff
[INFO] running `"docker" "start" "-a" "46cd9386a50f53a36bc686a6cf4495600d01b2514641655f8b304b2cdbf824ff"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]     Checking instant v0.1.2
[INFO] [stderr]     Checking mint v0.5.5
[INFO] [stderr]    Compiling inventory v0.1.6
[INFO] [stderr]    Compiling cpal v0.11.0 (https://github.com/amethyst/cpal?branch=wasm#8b9e1e23)
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]    Compiling alsa-sys v0.1.1 (https://github.com/amethyst/cpal?branch=wasm#8b9e1e23)
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]    Compiling lexical v2.2.2
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking tynm v0.1.4
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling proc_macro_roids v0.7.0
[INFO] [stderr]    Compiling shred-derive v0.6.2
[INFO] [stderr]    Compiling specs-derive v0.4.1
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling inventory-impl v0.1.6
[INFO] [stderr]    Compiling ghost v0.1.1
[INFO] [stderr]    Compiling ctor v0.1.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]    Compiling glsl-layout-derive v0.3.2
[INFO] [stderr]    Compiling paste-impl v0.1.10
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr] error: could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.14.9/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=7612c7b2da23b33d -C extra-filename=-7612c7b2da23b33d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fe43c56f0ba5ffae.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cea08010d8be3122.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-fca09053744738f5.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 `"docker" "inspect" "46cd9386a50f53a36bc686a6cf4495600d01b2514641655f8b304b2cdbf824ff"`
[INFO] running `"docker" "rm" "-f" "46cd9386a50f53a36bc686a6cf4495600d01b2514641655f8b304b2cdbf824ff"`
[INFO] [stdout] 46cd9386a50f53a36bc686a6cf4495600d01b2514641655f8b304b2cdbf824ff