[INFO] updating cached repository https://github.com/jeffrey-xiao/kademlia-dht-rs
[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/jeffrey-xiao/kademlia-dht-rs
[INFO] [stderr]  + ee81514...cc05165 gh-pages   -> gh-pages  (forced update)
[INFO] [stderr]    9cc5202..7b23369  master     -> master
[INFO] [stderr]  * [new tag]         v1.2.0     -> v1.2.0
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7b233696cecb4555f0ab47e65e0bfbc306e66336
[INFO] checking jeffrey-xiao/kademlia-dht-rs against nightly-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeffrey-xiao%2Fkademlia-dht-rs" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeffrey-xiao/kademlia-dht-rs on toolchain nightly-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jeffrey-xiao/kademlia-dht-rs
[INFO] finished tweaking git repo https://github.com/jeffrey-xiao/kademlia-dht-rs
[INFO] tweaked toml for git repo https://github.com/jeffrey-xiao/kademlia-dht-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+nightly-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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=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" "+nightly-2019-10-27" "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] 7ad117e3680f83fb3961d5c7f1c15650f3350f56c8be68a77ed2c65d828975c6
[INFO] running `"docker" "start" "-a" "7ad117e3680f83fb3961d5c7f1c15650f3350f56c8be68a77ed2c65d828975c6"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking bincode v0.9.2
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking simplelog v0.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking kademlia-dht v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.28s
[INFO] running `"docker" "inspect" "7ad117e3680f83fb3961d5c7f1c15650f3350f56c8be68a77ed2c65d828975c6"`
[INFO] running `"docker" "rm" "-f" "7ad117e3680f83fb3961d5c7f1c15650f3350f56c8be68a77ed2c65d828975c6"`
[INFO] [stdout] 7ad117e3680f83fb3961d5c7f1c15650f3350f56c8be68a77ed2c65d828975c6