[INFO] updating cached repository https://github.com/polyswarm/polyswarm-relay
[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] 0ecbd3e6df41ae5da9c238d1a468e30054f2cb65
[INFO] checking polyswarm/polyswarm-relay against master#2da942f32802c8233a09744024dfbc34431adf65 for pr-66963
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyswarm%2Fpolyswarm-relay" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/polyswarm/polyswarm-relay on toolchain 2da942f32802c8233a09744024dfbc34431adf65
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/polyswarm/polyswarm-relay
[INFO] finished tweaking git repo https://github.com/polyswarm/polyswarm-relay
[INFO] tweaked toml for git repo https://github.com/polyswarm/polyswarm-relay written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/polyswarm/polyswarm-relay already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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=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" "+2da942f32802c8233a09744024dfbc34431adf65" "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] 07dfc9e81a10354d5c3410d7a155a84d4277d06cd88d92df655123bda20cb56c
[INFO] running `"docker" "start" "-a" "07dfc9e81a10354d5c3410d7a155a84d4277d06cd88d92df655123bda20cb56c"`
[INFO] [stderr]    Compiling pkg-config v0.3.10
[INFO] [stderr]     Checking serde v1.0.43
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking parking_lot_core v0.2.13
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking crunchy v0.1.6
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking mio-uds v0.6.4
[INFO] [stderr]     Checking fixed-hash v0.2.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking tiny-keccak v1.4.1
[INFO] [stderr] error: a macro named `impl_heapsize_for_hash` has already been exported
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fixed-hash-0.2.1/src/hash.rs:431:1
[INFO] [stderr]     |
[INFO] [stderr] 431 | / macro_rules! impl_heapsize_for_hash {
[INFO] [stderr] 432 | |     ($name: ident) => {
[INFO] [stderr] 433 | |         impl $crate::heapsize::HeapSizeOf for $name {
[INFO] [stderr] 434 | |             fn heap_size_of_children(&self) -> usize {
[INFO] [stderr] ...   |
[INFO] [stderr] 438 | |     }
[INFO] [stderr] 439 | | }
[INFO] [stderr]     | |_^ `impl_heapsize_for_hash` already exported
[INFO] [stderr]     |
[INFO] [stderr] note: previous macro export is now shadowed
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fixed-hash-0.2.1/src/hash.rs:325:1
[INFO] [stderr]     |
[INFO] [stderr] 325 | / macro_rules! impl_heapsize_for_hash {
[INFO] [stderr] 326 | |     ($name: ident) => {
[INFO] [stderr] 327 | |         impl $crate::heapsize::HeapSizeOf for $name {
[INFO] [stderr] 328 | |             fn heap_size_of_children(&self) -> usize {
[INFO] [stderr] ...   |
[INFO] [stderr] 332 | |     }
[INFO] [stderr] 333 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `fixed-hash`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "07dfc9e81a10354d5c3410d7a155a84d4277d06cd88d92df655123bda20cb56c"`
[INFO] running `"docker" "rm" "-f" "07dfc9e81a10354d5c3410d7a155a84d4277d06cd88d92df655123bda20cb56c"`
[INFO] [stdout] 07dfc9e81a10354d5c3410d7a155a84d4277d06cd88d92df655123bda20cb56c