[INFO] fetching crate rgb 0.8.14...
[INFO] checking rgb-0.8.14 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate rgb 0.8.14 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rgb 0.8.14 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rgb 0.8.14
[INFO] removed 2 missing examples
[INFO] finished tweaking crates.io crate rgb 0.8.14
[INFO] tweaked toml for crates.io crate rgb 0.8.14 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate rgb 0.8.14 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4e6e3f15bfddeba74a2e66fba63e93a7cd44d567b9bd0ef7e2a223dbe2566cc5
[INFO] running `"docker" "start" "-a" "4e6e3f15bfddeba74a2e66fba63e93a7cd44d567b9bd0ef7e2a223dbe2566cc5"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rgb v0.8.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr] error[E0277]: the trait bound `rgb::RGB<u8>: serde::ser::Serialize` is not satisfied
[INFO] [stderr]     --> examples/serde.rs:10:42
[INFO] [stderr]      |
[INFO] [stderr] 10   |     println!("{}", serde_json::to_string(&color).unwrap());
[INFO] [stderr]      |                                          ^^^^^^ the trait `serde::ser::Serialize` is not implemented for `rgb::RGB<u8>`
[INFO] [stderr]      | 
[INFO] [stderr]     ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.40/src/ser.rs:2224:8
[INFO] [stderr]      |
[INFO] [stderr] 2224 |     T: Serialize,
[INFO] [stderr]      |        --------- required by this bound in `serde_json::to_string`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `rgb::RGB<u8>: serde::de::Deserialize<'_>` is not satisfied
[INFO] [stderr]     --> examples/serde.rs:12:23
[INFO] [stderr]      |
[INFO] [stderr] 12   |     let color: RGB8 = serde_json::from_str("{\"r\":10,\"g\":20,\"b\":30}").unwrap();
[INFO] [stderr]      |                       ^^^^^^^^^^^^^^^^^^^^ the trait `serde::de::Deserialize<'_>` is not implemented for `rgb::RGB<u8>`
[INFO] [stderr]      | 
[INFO] [stderr]     ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_json-1.0.40/src/de.rs:2331:8
[INFO] [stderr]      |
[INFO] [stderr] 2331 |     T: de::Deserialize<'a>,
[INFO] [stderr]      |        ------------------- required by this bound in `serde_json::from_str`
[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 `rgb`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/internal/ops.rs:290:69
[INFO] [stderr]     |
[INFO] [stderr] 290 |         assert_ne!(RGBA::new(255u8, 255, 0, 0), RED_RGBA+BLUE_RGBA);;
[INFO] [stderr]     |                                                                     ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4e6e3f15bfddeba74a2e66fba63e93a7cd44d567b9bd0ef7e2a223dbe2566cc5"`
[INFO] running `"docker" "rm" "-f" "4e6e3f15bfddeba74a2e66fba63e93a7cd44d567b9bd0ef7e2a223dbe2566cc5"`
[INFO] [stdout] 4e6e3f15bfddeba74a2e66fba63e93a7cd44d567b9bd0ef7e2a223dbe2566cc5