[INFO] fetching crate orml-utilities 0.0.1...
[INFO] checking orml-utilities-0.0.1 against try#4662032ab74cd44d423120d08d251dfead4914a0 for pr-72788
[INFO] extracting crate orml-utilities 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate orml-utilities 0.0.1 on toolchain 4662032ab74cd44d423120d08d251dfead4914a0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate orml-utilities 0.0.1
[INFO] finished tweaking crates.io crate orml-utilities 0.0.1
[INFO] tweaked toml for crates.io crate orml-utilities 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4662032ab74cd44d423120d08d251dfead4914a0" "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" "+4662032ab74cd44d423120d08d251dfead4914a0" "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] ae6d2f5f2de0eb5150813b6fc42abeee69292d78ad9a0e190172aa64380c2b9d
[INFO] running `"docker" "start" "-a" "ae6d2f5f2de0eb5150813b6fc42abeee69292d78ad9a0e190172aa64380c2b9d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
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[INFO] [stderr]    Compiling sp-debug-derive v2.0.0-rc2
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[INFO] [stderr]     Checking orml-utilities v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `serde_json`
[INFO] [stderr]    --> src/fixed_u128.rs:436:20
[INFO] [stderr]     |
[INFO] [stderr] 436 |         let serialized = serde_json::to_string(&two_point_five).unwrap();
[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/fixed_u128.rs:438:33
[INFO] [stderr]     |
[INFO] [stderr] 438 |         let deserialized: FixedU128 = serde_json::from_str(&serialized).unwrap();
[INFO] [stderr]     |                                       ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stderr] 
[INFO] [stderr] error[E0046]: not all trait items implemented, missing: `MaximumExtrinsicWeight`
[INFO] [stderr]    --> src/linked_item.rs:199:2
[INFO] [stderr]     |
[INFO] [stderr] 199 |     impl frame_system::Trait for Test {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `MaximumExtrinsicWeight` in implementation
[INFO] [stderr]     |
[INFO] [stderr]     = help: implement the missing item: `type MaximumExtrinsicWeight = Type;`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0046, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0046`.
[INFO] [stderr] error: could not compile `orml-utilities`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ae6d2f5f2de0eb5150813b6fc42abeee69292d78ad9a0e190172aa64380c2b9d"`
[INFO] running `"docker" "rm" "-f" "ae6d2f5f2de0eb5150813b6fc42abeee69292d78ad9a0e190172aa64380c2b9d"`
[INFO] [stdout] ae6d2f5f2de0eb5150813b6fc42abeee69292d78ad9a0e190172aa64380c2b9d