[INFO] crate sp-runtime 2.0.0-alpha.5 is already in cache
[INFO] checking sp-runtime-2.0.0-alpha.5 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate sp-runtime 2.0.0-alpha.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate sp-runtime 2.0.0-alpha.5 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sp-runtime 2.0.0-alpha.5
[INFO] finished tweaking crates.io crate sp-runtime 2.0.0-alpha.5
[INFO] tweaked toml for crates.io crate sp-runtime 2.0.0-alpha.5 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] 329abbbb3209376b175d76d5b3cb2160fdf6f3bf00b4b1750321640a7b1c7c81
[INFO] running `"docker" "start" "-a" "329abbbb3209376b175d76d5b3cb2160fdf6f3bf00b4b1750321640a7b1c7c81"`
[INFO] [stderr]     Checking sp-runtime v2.0.0-alpha.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/generic/header.rs:193:19
[INFO] [stderr]     |
[INFO] [stderr] 193 |                 let mut ser = serde_json::Serializer::new(std::io::Cursor::new(&mut v));
[INFO] [stderr]     |                               ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/generic/header.rs:208:18
[INFO] [stderr]     |
[INFO] [stderr] 208 |             let mut der = serde_json::Deserializer::new(serde_json::de::StrRead::new(num));
[INFO] [stderr]     |                           ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/generic/header.rs:208:48
[INFO] [stderr]     |
[INFO] [stderr] 208 |             let mut der = serde_json::Deserializer::new(serde_json::de::StrRead::new(num));
[INFO] [stderr]     |                                                         ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `serde_json` in `{{root}}`
[INFO] [stderr]    --> src/generic/digest.rs:435:6
[INFO] [stderr]     |
[INFO] [stderr] 435 |             ::serde_json::to_string(&digest).unwrap(),
[INFO] [stderr]     |               ^^^^^^^^^^ could not find `serde_json` in `{{root}}`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/lib.rs:697:14
[INFO] [stderr]     |
[INFO] [stderr] 697 |         assert_eq!(serde_json::to_string(&ex).unwrap(), "\"0x1001020304\"".to_owned());
[INFO] [stderr]     |                    ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `&mut _: _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Serializer` is not satisfied
[INFO] [stderr]    --> src/generic/header.rs:194:28
[INFO] [stderr]     |
[INFO] [stderr] 72  | pub fn serialize_number<S, T: Copy + Into<U256> + TryFrom<U256>>(
[INFO] [stderr]     |        ----------------
[INFO] [stderr] 73  |     val: &T, s: S,
[INFO] [stderr] 74  | ) -> Result<S::Ok, S::Error> where S: serde::Serializer {
[INFO] [stderr]     |                                       ----------------- required by this bound in `generic::header::serialize_number`
[INFO] [stderr] ...
[INFO] [stderr] 194 |                 serialize_number(&num, &mut ser).unwrap();
[INFO] [stderr]     |                                        -^^^^^^^
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        the trait `_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Serializer` is not implemented for `&mut _`
[INFO] [stderr]     |                                        help: consider removing the leading `&`-reference
[INFO] [stderr]     |
[INFO] [stderr]     = help: the following implementations were found:
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::private::ser::FlatMapSerializer<'a, M> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Serializer>
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::private::ser::TaggedSerializer<S> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Serializer>
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::private::ser::content::ContentSerializer<E> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Serializer>
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `&mut _: _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Deserializer<'_>` is not satisfied
[INFO] [stderr]    --> src/generic/header.rs:209:23
[INFO] [stderr]     |
[INFO] [stderr] 80  | pub fn deserialize_number<'a, D, T: Copy + Into<U256> + TryFrom<U256>>(
[INFO] [stderr]     |        ------------------
[INFO] [stderr] 81  |     d: D,
[INFO] [stderr] 82  | ) -> Result<T, D::Error> where D: serde::Deserializer<'a> {
[INFO] [stderr]     |                                   ----------------------- required by this bound in `generic::header::deserialize_number`
[INFO] [stderr] ...
[INFO] [stderr] 209 |             deserialize_number(&mut der).unwrap()
[INFO] [stderr]     |                                -^^^^^^^
[INFO] [stderr]     |                                |
[INFO] [stderr]     |                                the trait `_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Deserializer<'_>` is not implemented for `&mut _`
[INFO] [stderr]     |                                help: consider removing the leading `&`-reference
[INFO] [stderr]     |
[INFO] [stderr]     = help: the following implementations were found:
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::de::value::BoolDeserializer<E> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Deserializer<'de>>
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::de::value::BorrowedBytesDeserializer<'de, E> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Deserializer<'de>>
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::de::value::BorrowedStrDeserializer<'de, E> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Deserializer<'de>>
[INFO] [stderr]               <_IMPL_DESERIALIZE_FOR_MultiSignature::_serde::de::value::CharDeserializer<E> as _IMPL_DESERIALIZE_FOR_MultiSignature::_serde::Deserializer<'de>>
[INFO] [stderr]             and 33 others
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `sp-runtime`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "329abbbb3209376b175d76d5b3cb2160fdf6f3bf00b4b1750321640a7b1c7c81"`
[INFO] running `"docker" "rm" "-f" "329abbbb3209376b175d76d5b3cb2160fdf6f3bf00b4b1750321640a7b1c7c81"`
[INFO] [stdout] 329abbbb3209376b175d76d5b3cb2160fdf6f3bf00b4b1750321640a7b1c7c81
