[INFO] crate rgb 0.8.14 is already in cache
[INFO] testing rgb-0.8.14 against 1.38.0 for beta-1.39-1
[INFO] extracting crate rgb 0.8.14 into work/builds/worker-10/source
[INFO] validating manifest of crates.io crate rgb 0.8.14 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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 work/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate rgb 0.8.14 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 915dc014b91f3206d2a7a021a795f01b2d697d1a75f20d667c3e8583f3d2b46f
[INFO] running `"docker" "start" "-a" "915dc014b91f3206d2a7a021a795f01b2d697d1a75f20d667c3e8583f3d2b46f"`
[INFO] [stderr]    Compiling rgb v0.8.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "915dc014b91f3206d2a7a021a795f01b2d697d1a75f20d667c3e8583f3d2b46f"`
[INFO] running `"docker" "rm" "-f" "915dc014b91f3206d2a7a021a795f01b2d697d1a75f20d667c3e8583f3d2b46f"`
[INFO] [stdout] 915dc014b91f3206d2a7a021a795f01b2d697d1a75f20d667c3e8583f3d2b46f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7c956939a59a29e6756e76bc704cae17a17305dd5e9bcaf1224c7540e1a77653
[INFO] running `"docker" "start" "-a" "7c956939a59a29e6756e76bc704cae17a17305dd5e9bcaf1224c7540e1a77653"`
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling rgb v0.8.14 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: the trait bound `rgb::RGB<u8>: serde::ser::Serialize` is not satisfied
[INFO] [stderr]   --> examples/serde.rs:10:20
[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]    = note: required by `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]    = note: required by `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] error: build failed
[INFO] running `"docker" "inspect" "7c956939a59a29e6756e76bc704cae17a17305dd5e9bcaf1224c7540e1a77653"`
[INFO] running `"docker" "rm" "-f" "7c956939a59a29e6756e76bc704cae17a17305dd5e9bcaf1224c7540e1a77653"`
[INFO] [stdout] 7c956939a59a29e6756e76bc704cae17a17305dd5e9bcaf1224c7540e1a77653