[INFO] fetching crate two-sided-vec 0.1.9...
[INFO] checking two-sided-vec-0.1.9 against master#74e80468347471779be6060d8d7d6d04e98e467f for pr-72788
[INFO] extracting crate two-sided-vec 0.1.9 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate two-sided-vec 0.1.9 on toolchain 74e80468347471779be6060d8d7d6d04e98e467f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate two-sided-vec 0.1.9
[INFO] finished tweaking crates.io crate two-sided-vec 0.1.9
[INFO] tweaked toml for crates.io crate two-sided-vec 0.1.9 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+74e80468347471779be6060d8d7d6d04e98e467f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+74e80468347471779be6060d8d7d6d04e98e467f" "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] 54f32addde24ce548f111329a07f87330539c2f7705a7e93ea51c803c269f1f6
[INFO] running `"docker" "start" "-a" "54f32addde24ce548f111329a07f87330539c2f7705a7e93ea51c803c269f1f6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking two-sided-vec v0.1.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_test v1.0.111
[INFO] [stderr] error[E0277]: the trait bound `two_sided_vec::TwoSidedVec<{integer}>: serde::ser::Serialize` is not satisfied
[INFO] [stderr]   --> tests/basic.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     ::serde_test::assert_tokens(&values, &[
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `two_sided_vec::TwoSidedVec<{integer}>`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_test-1.0.111/src/assert.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 |     T: Serialize + Deserialize<'de> + PartialEq + Debug,
[INFO] [stderr]    |        --------- required by this bound in `serde_test::assert::assert_tokens`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `two_sided_vec::TwoSidedVec<{integer}>: serde::de::Deserialize<'_>` is not satisfied
[INFO] [stderr]   --> tests/basic.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     ::serde_test::assert_tokens(&values, &[
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::de::Deserialize<'_>` is not implemented for `two_sided_vec::TwoSidedVec<{integer}>`
[INFO] [stderr]    | 
[INFO] [stderr]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_test-1.0.111/src/assert.rs:33:20
[INFO] [stderr]    |
[INFO] [stderr] 33 |     T: Serialize + Deserialize<'de> + PartialEq + Debug,
[INFO] [stderr]    |                    ---------------- required by this bound in `serde_test::assert::assert_tokens`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `two-sided-vec`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "54f32addde24ce548f111329a07f87330539c2f7705a7e93ea51c803c269f1f6"`
[INFO] running `"docker" "rm" "-f" "54f32addde24ce548f111329a07f87330539c2f7705a7e93ea51c803c269f1f6"`
[INFO] [stdout] 54f32addde24ce548f111329a07f87330539c2f7705a7e93ea51c803c269f1f6