[INFO] updating cached repository polyswarm/polyswarm-relay
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/polyswarm/polyswarm-relay
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/polyswarm/polyswarm-relay" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/polyswarm/polyswarm-relay"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/polyswarm/polyswarm-relay'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/polyswarm/polyswarm-relay" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/polyswarm/polyswarm-relay"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/polyswarm/polyswarm-relay'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0ecbd3e6df41ae5da9c238d1a468e30054f2cb65
[INFO] sha for GitHub repo polyswarm/polyswarm-relay: 0ecbd3e6df41ae5da9c238d1a468e30054f2cb65
[INFO] validating manifest of polyswarm/polyswarm-relay on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of polyswarm/polyswarm-relay on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing polyswarm/polyswarm-relay
[INFO] finished frobbing polyswarm/polyswarm-relay
[INFO] frobbed toml for polyswarm/polyswarm-relay written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/polyswarm/polyswarm-relay/Cargo.toml
[INFO] started frobbing polyswarm/polyswarm-relay
[INFO] finished frobbing polyswarm/polyswarm-relay
[INFO] frobbed toml for polyswarm/polyswarm-relay written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/polyswarm/polyswarm-relay/Cargo.toml
[INFO] crate polyswarm/polyswarm-relay already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking polyswarm/polyswarm-relay against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-7/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/polyswarm/polyswarm-relay:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8a18e8ff464d142b6444031ad106549fa1a95573ff3e56e7078630ee6cb94494
[INFO] running `"docker" "start" "-a" "8a18e8ff464d142b6444031ad106549fa1a95573ff3e56e7078630ee6cb94494"`
[INFO] [stderr]    Compiling pkg-config v0.3.10
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking ethereum-types-serialize v0.2.1
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking tokio-timer v0.1.2
[INFO] [stderr]     Checking parking_lot_core v0.2.13
[INFO] [stderr]     Checking crossbeam-epoch v0.4.1
[INFO] [stderr]     Checking crunchy v0.1.6
[INFO] [stderr]     Checking ctrlc v3.1.0
[INFO] [stderr]    Compiling polyswarm-relay v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling uint v0.2.0
[INFO] [stderr]    Compiling ethereum-types v0.3.1
[INFO] [stderr]     Checking tiny-keccak v1.4.1
[INFO] [stderr]     Checking fixed-hash v0.2.1
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> build.rs:49:21
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 let mut out_file =
[INFO] [stderr]    |                     ----^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: a macro named `impl_heapsize_for_hash` has already been exported
[INFO] [stderr]    --> /opt/crater/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 $name {
[INFO] [stderr] 434 | |             fn heap_size_of_children(&self) -> usize {
[INFO] [stderr] ...   |
[INFO] [stderr] 438 | |     }
[INFO] [stderr] 439 | | }
[INFO] [stderr]     | |_^ `impl_heapsize_for_hash` already exported
[INFO] [stderr]     |
[INFO] [stderr] note: previous macro export is now shadowed
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/fixed-hash-0.2.1/src/hash.rs:325:1
[INFO] [stderr]     |
[INFO] [stderr] 325 | / macro_rules! impl_heapsize_for_hash {
[INFO] [stderr] 326 | |     ($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" "8a18e8ff464d142b6444031ad106549fa1a95573ff3e56e7078630ee6cb94494"`
[INFO] running `"docker" "rm" "-f" "8a18e8ff464d142b6444031ad106549fa1a95573ff3e56e7078630ee6cb94494"`
[INFO] [stdout] 8a18e8ff464d142b6444031ad106549fa1a95573ff3e56e7078630ee6cb94494