[INFO] fetching crate two-sided-vec 0.1.11...
[INFO] checking two-sided-vec-0.1.11 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] extracting crate two-sided-vec 0.1.11 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate two-sided-vec 0.1.11 on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate two-sided-vec 0.1.11
[INFO] finished tweaking crates.io crate two-sided-vec 0.1.11
[INFO] tweaked toml for crates.io crate two-sided-vec 0.1.11 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5edf1f1ba8aa82f9dd9d5274495bcf5b3cf92e331cfacec780a251a9b05f507
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e5edf1f1ba8aa82f9dd9d5274495bcf5b3cf92e331cfacec780a251a9b05f507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5edf1f1ba8aa82f9dd9d5274495bcf5b3cf92e331cfacec780a251a9b05f507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5edf1f1ba8aa82f9dd9d5274495bcf5b3cf92e331cfacec780a251a9b05f507", kill_on_drop: false }`
[INFO] [stdout] e5edf1f1ba8aa82f9dd9d5274495bcf5b3cf92e331cfacec780a251a9b05f507
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 678895d99a6a41f9f3e658acd6ce20f5d4d2167bf5e0a219675b40c7153d99b3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "678895d99a6a41f9f3e658acd6ce20f5d4d2167bf5e0a219675b40c7153d99b3", kill_on_drop: false }`
[INFO] [stderr]     Checking two-sided-vec v0.1.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_test v1.0.123
[INFO] [stdout] error[E0277]: the trait bound `TwoSidedVec<{integer}>: serde::ser::Serialize` is not satisfied
[INFO] [stdout]   --> tests/basic.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     ::serde_test::assert_tokens(&values, &[
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::ser::Serialize` is not implemented for `TwoSidedVec<{integer}>`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_test-1.0.123/src/assert.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     T: Serialize + Deserialize<'de> + PartialEq + Debug,
[INFO] [stdout]    |        --------- required by this bound in `assert_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `TwoSidedVec<{integer}>: serde::de::Deserialize<'_>` is not satisfied
[INFO] [stdout]   --> tests/basic.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     ::serde_test::assert_tokens(&values, &[
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::de::Deserialize<'_>` is not implemented for `TwoSidedVec<{integer}>`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_test-1.0.123/src/assert.rs:34:20
[INFO] [stdout]    |
[INFO] [stdout] 34 |     T: Serialize + Deserialize<'de> + PartialEq + Debug,
[INFO] [stdout]    |                    ---------------- required by this bound in `assert_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `two-sided-vec`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "678895d99a6a41f9f3e658acd6ce20f5d4d2167bf5e0a219675b40c7153d99b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678895d99a6a41f9f3e658acd6ce20f5d4d2167bf5e0a219675b40c7153d99b3", kill_on_drop: false }`
[INFO] [stdout] 678895d99a6a41f9f3e658acd6ce20f5d4d2167bf5e0a219675b40c7153d99b3