[INFO] updating cached repository NervosFoundation/serde_bench
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NervosFoundation/serde_bench
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NervosFoundation/serde_bench" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NervosFoundation/serde_bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NervosFoundation/serde_bench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NervosFoundation/serde_bench" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NervosFoundation/serde_bench"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NervosFoundation/serde_bench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 121ba4c0d8f51840543c7f98fac5e7e858d2973c
[INFO] sha for GitHub repo NervosFoundation/serde_bench: 121ba4c0d8f51840543c7f98fac5e7e858d2973c
[INFO] validating manifest of NervosFoundation/serde_bench 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 NervosFoundation/serde_bench 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 NervosFoundation/serde_bench
[INFO] finished frobbing NervosFoundation/serde_bench
[INFO] frobbed toml for NervosFoundation/serde_bench written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/NervosFoundation/serde_bench/Cargo.toml
[INFO] started frobbing NervosFoundation/serde_bench
[INFO] finished frobbing NervosFoundation/serde_bench
[INFO] frobbed toml for NervosFoundation/serde_bench written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NervosFoundation/serde_bench/Cargo.toml
[INFO] crate NervosFoundation/serde_bench 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking NervosFoundation/serde_bench against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-6/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/NervosFoundation/serde_bench:/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] 77675cf8d0b2669aad01ce6645d2c59a343a66f7f0bb3b8664298a1c78ed86a4
[INFO] running `"docker" "start" "-a" "77675cf8d0b2669aad01ce6645d2c59a343a66f7f0bb3b8664298a1c78ed86a4"`
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking rustc-hex v1.0.0
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling crunchy v0.2.1
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling protobuf v2.1.1
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking utf8-ranges v1.0.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking same-file v1.0.3
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking walkdir v2.2.5
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling uint v0.2.0 (https://github.com/NervosFoundation/primitives#dfb17048)
[INFO] [stderr]    Compiling bigint v0.2.3 (https://github.com/NervosFoundation/bigint#604d7695)
[INFO] [stderr]     Checking itertools-num v0.1.2
[INFO] [stderr]     Checking tiny-keccak v1.4.2
[INFO] [stderr]     Checking uint v0.4.1
[INFO] [stderr]     Checking flatbuffers v0.5.0
[INFO] [stderr]     Checking fixed-hash v0.2.2
[INFO] [stderr]     Checking fixed-hash v0.2.1 (https://github.com/NervosFoundation/primitives#dfb17048)
[INFO] [stderr] error: a macro named `impl_heapsize_for_hash` has already been exported
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/primitives-a99801f41be25a23/dfb1704/fixed-hash/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 $name {
[INFO] [stderr] 434 | |             fn heap_size_of_children(&self) -> usize {
[INFO] [stderr] ...   |
[INFO] [stderr] 438 | |     }
[INFO] [stderr] 439 | | }
[INFO] [stderr]     | |_^ `impl_heapsize_for_hash` already exported
[INFO] [stderr]     |
[INFO] [stderr] note: previous macro export is now shadowed
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/primitives-a99801f41be25a23/dfb1704/fixed-hash/src/hash.rs:325:1
[INFO] [stderr]     |
[INFO] [stderr] 325 | / macro_rules! impl_heapsize_for_hash {
[INFO] [stderr] 326 | |     ($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" "77675cf8d0b2669aad01ce6645d2c59a343a66f7f0bb3b8664298a1c78ed86a4"`
[INFO] running `"docker" "rm" "-f" "77675cf8d0b2669aad01ce6645d2c59a343a66f7f0bb3b8664298a1c78ed86a4"`
[INFO] [stdout] 77675cf8d0b2669aad01ce6645d2c59a343a66f7f0bb3b8664298a1c78ed86a4