[INFO] updating cached repository https://github.com/LevitatingOrange/circular-family-tree
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3b371aa50935cd9d0b4f2604683dd3ce856f5e78
[INFO] checking LevitatingOrange/circular-family-tree against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLevitatingOrange%2Fcircular-family-tree" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LevitatingOrange/circular-family-tree on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/LevitatingOrange/circular-family-tree
[INFO] finished tweaking git repo https://github.com/LevitatingOrange/circular-family-tree
[INFO] tweaked toml for git repo https://github.com/LevitatingOrange/circular-family-tree written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/LevitatingOrange/circular-family-tree already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b47d6d67a17377ec8f34887df7e7f54d1f30a2d69985589a0b5158b8a77233eb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "b47d6d67a17377ec8f34887df7e7f54d1f30a2d69985589a0b5158b8a77233eb"`
[INFO] [stderr]     Checking float-cmp v0.5.2
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]     Checking sw-composite v0.5.10
[INFO] [stderr]     Checking ttf-parser v0.2.2
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking typed-arena v1.5.0
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]     Checking unicode-script v0.3.0
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking kurbo v0.2.3
[INFO] [stderr]     Checking euclid v0.20.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.87
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling harfbuzz-sys v0.3.2
[INFO] [stderr]     Checking lyon_geom v0.14.0
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking harfbuzz_rs v1.0.0
[INFO] [stderr]     Checking raqote v0.6.3
[INFO] [stderr]     Checking usvg v0.8.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.0
[INFO] [stderr]     Checking resvg v0.8.0
[INFO] [stderr]     Checking structopt v0.3.0
[INFO] [stderr]     Checking circular-binary-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.89s
[INFO] running `"docker" "inspect" "b47d6d67a17377ec8f34887df7e7f54d1f30a2d69985589a0b5158b8a77233eb"`
[INFO] running `"docker" "rm" "-f" "b47d6d67a17377ec8f34887df7e7f54d1f30a2d69985589a0b5158b8a77233eb"`
[INFO] [stdout] b47d6d67a17377ec8f34887df7e7f54d1f30a2d69985589a0b5158b8a77233eb