[INFO] fetching crate constellation-rs 0.1.5...
[INFO] checking constellation-rs-0.1.5 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate constellation-rs 0.1.5 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate constellation-rs 0.1.5 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate constellation-rs 0.1.5
[INFO] removed 28 missing tests
[INFO] finished tweaking crates.io crate constellation-rs 0.1.5
[INFO] tweaked toml for crates.io crate constellation-rs 0.1.5 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate constellation-rs 0.1.5 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded relative v0.1.5
[INFO] [stderr]   Downloaded metatype v0.1.2
[INFO] [stderr]   Downloaded socketstat v0.1.0
[INFO] [stderr]   Downloaded build_id v0.1.5
[INFO] [stderr]   Downloaded serde_pipe v0.1.3
[INFO] [stderr]   Downloaded notifier v0.1.3
[INFO] [stderr]   Downloaded replace_with v0.1.4
[INFO] [stderr]   Downloaded serde_closure v0.1.5
[INFO] [stderr]   Downloaded constellation-internal v0.1.5
[INFO] [stderr]   Downloaded alloc_counter v0.0.2
[INFO] [stderr]   Downloaded serde_traitobject v0.1.6
[INFO] [stderr]   Downloaded deploy-temp-fringe v1.2.4
[INFO] [stderr]   Downloaded tcp_typed v0.1.4
[INFO] [stderr]   Downloaded once_cell v1.0.2
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6b8c36b6d1633b61ae32af7f59e9457dfe4e5763ced7b4aac5fa9d81ae103806
[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" "6b8c36b6d1633b61ae32af7f59e9457dfe4e5763ced7b4aac5fa9d81ae103806"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling heapless v0.5.1
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling constellation-rs v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking replace_with v0.1.4
[INFO] [stderr]     Checking once_cell v1.0.2
[INFO] [stderr]     Checking metatype v0.1.2
[INFO] [stderr]     Checking bytesize v0.1.3
[INFO] [stderr]     Checking multiset v0.0.5
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking hash32 v0.1.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking aes v0.3.2
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking backtrace-sys v0.1.31
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking backtrace v0.3.36
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_pcg v0.2.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking systemstat v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_bytes v0.11.2
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]     Checking erased-serde v0.3.9
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking serde_pipe v0.1.3
[INFO] [stderr]     Checking cargo_metadata v0.8.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking crossbeam v0.7.2
[INFO] [stderr]     Checking palaver v0.2.8
[INFO] [stderr]     Checking build_id v0.1.5
[INFO] [stderr]     Checking socketstat v0.1.0
[INFO] [stderr]     Checking constellation-internal v0.1.5
[INFO] [stderr]     Checking tcp_typed v0.1.4
[INFO] [stderr]     Checking relative v0.1.5
[INFO] [stderr]     Checking serde_closure v0.1.5
[INFO] [stderr]     Checking serde_traitobject v0.1.6
[INFO] [stderr]     Checking notifier v0.1.3
[INFO] [stderr] error[E0520]: `serialize_sized` specializes an item from a parent `impl`, but that item is not marked `default`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_traitobject-0.1.6/src/lib.rs:266:3
[INFO] [stderr]     |
[INFO] [stderr] 263 |       impl<T: serde::ser::Serialize + ?Sized> Sealed for T {}
[INFO] [stderr]     |       ------------------------------------------------------- parent `impl` is here
[INFO] [stderr] ...
[INFO] [stderr] 266 |           fn serialize_sized<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
[INFO] [stderr]     |  _________^
[INFO] [stderr] 267 | |         where
[INFO] [stderr] 268 | |             S: serde::Serializer,
[INFO] [stderr] 269 | |             Self: Sized,
[INFO] [stderr] 270 | |         {
[INFO] [stderr] 271 | |             serde::ser::Serialize::serialize(self, serializer)
[INFO] [stderr] 272 | |         }
[INFO] [stderr]     | |_________^ cannot specialize default item `serialize_sized`
[INFO] [stderr]     |
[INFO] [stderr]     = note: to specialize, `serialize_sized` in the parent `impl` must be marked `default`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0520`.
[INFO] [stderr] error: could not compile `serde_traitobject`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "6b8c36b6d1633b61ae32af7f59e9457dfe4e5763ced7b4aac5fa9d81ae103806"`
[INFO] running `"docker" "rm" "-f" "6b8c36b6d1633b61ae32af7f59e9457dfe4e5763ced7b4aac5fa9d81ae103806"`
[INFO] [stdout] 6b8c36b6d1633b61ae32af7f59e9457dfe4e5763ced7b4aac5fa9d81ae103806