[INFO] fetching crate serial_int 1.0.0...
[INFO] testing serial_int-1.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate serial_int 1.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serial_int 1.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serial_int 1.0.0
[INFO] finished tweaking crates.io crate serial_int 1.0.0
[INFO] tweaked toml for crates.io crate serial_int 1.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5247764c27c0b666129f4aa0478f44cb1264d908cd1fce086503003a9ad571fd
[INFO] running `Command { std: "docker" "start" "-a" "5247764c27c0b666129f4aa0478f44cb1264d908cd1fce086503003a9ad571fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5247764c27c0b666129f4aa0478f44cb1264d908cd1fce086503003a9ad571fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5247764c27c0b666129f4aa0478f44cb1264d908cd1fce086503003a9ad571fd", kill_on_drop: false }`
[INFO] [stdout] 5247764c27c0b666129f4aa0478f44cb1264d908cd1fce086503003a9ad571fd
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6136d28811e6f2067dc93181b0110a3178fc2b0c6544d07ceb3699d744dee05b
[INFO] running `Command { std: "docker" "start" "-a" "6136d28811e6f2067dc93181b0110a3178fc2b0c6544d07ceb3699d744dee05b", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial_int v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "6136d28811e6f2067dc93181b0110a3178fc2b0c6544d07ceb3699d744dee05b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6136d28811e6f2067dc93181b0110a3178fc2b0c6544d07ceb3699d744dee05b", kill_on_drop: false }`
[INFO] [stdout] 6136d28811e6f2067dc93181b0110a3178fc2b0c6544d07ceb3699d744dee05b
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9770ca1ad37a30e7b399237d499acd9081c1eb9de2d126da1bd587099f74285
[INFO] running `Command { std: "docker" "start" "-a" "d9770ca1ad37a30e7b399237d499acd9081c1eb9de2d126da1bd587099f74285", kill_on_drop: false }`
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serial_int v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `Command { std: "docker" "inspect" "d9770ca1ad37a30e7b399237d499acd9081c1eb9de2d126da1bd587099f74285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9770ca1ad37a30e7b399237d499acd9081c1eb9de2d126da1bd587099f74285", kill_on_drop: false }`
[INFO] [stdout] d9770ca1ad37a30e7b399237d499acd9081c1eb9de2d126da1bd587099f74285
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ee17bac4ed049e2fd0e84edf3e411ee9997fb6dd6d727b7bbfe88c9af820eae0
[INFO] running `Command { std: "docker" "start" "-a" "ee17bac4ed049e2fd0e84edf3e411ee9997fb6dd6d727b7bbfe88c9af820eae0", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serial_int-9cdf4275f312b4b9)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test tests::core_types::u128_creates_unique_values_until_end ... ok
[INFO] [stdout] test tests::core_types::usize_creates_unique_values_until_end ... ok
[INFO] [stdout] test tests::core_types::u128_recreates_end_value ... ok
[INFO] [stdout] test tests::core_types::u8_recreates_end_value ... ok
[INFO] [stderr]    Doc-tests serial_int
[INFO] [stdout] test tests::core_types::u16_recreates_end_value ... ok
[INFO] [stdout] test tests::core_types::u32_recreates_end_value ... ok
[INFO] [stdout] test tests::core_types::usize_recreates_end_value ... ok
[INFO] [stdout] test tests::core_types::u16_creates_unique_values_until_end ... ok
[INFO] [stdout] test tests::core_types::u64_creates_unique_values_until_end ... ok
[INFO] [stdout] test tests::core_types::u8_creates_unique_values_until_end ... ok
[INFO] [stdout] test tests::core_types::u64_recreates_end_value ... ok
[INFO] [stdout] test tests::core_types::u32_creates_unique_values_until_end ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test src/lib.rs - (line 39) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 55) ... FAILED
[INFO] [stdout] test src/serial_generator.rs - serial_generator::SerialGenerator<T>::with_init_value (line 40) ... ok
[INFO] [stdout] test src/serial_generator.rs - serial_generator::SerialGenerator<T>::new (line 23) ... ok
[INFO] [stdout] test src/lib.rs - (line 26) ... ok
[INFO] [stdout] test src/lib.rs - (line 70) ... ok
[INFO] [stdout] test src/serial_generator.rs - serial_generator::SerialGenerator<T>::is_at_max (line 98) ... ok
[INFO] [stdout] test src/serial_generator.rs - serial_generator::SerialGenerator<T>::generate (line 52) ... ok
[INFO] [stdout] test src/serial_generator.rs - serial_generator::SerialGenerator<T>::previous (line 76) ... ok
[INFO] [stdout] test src/lib.rs - (line 86) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 39) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `SerialGenerator<u8>: serde::ser::Serialize` is not satisfied
[INFO] [stdout]   --> src/lib.rs:48:34
[INFO] [stdout]    |
[INFO] [stdout] 12 | let gen_string = toml::to_string(&gen).unwrap();
[INFO] [stdout]    |                                  ^^^^ the trait `serde::ser::Serialize` is not implemented for `SerialGenerator<u8>`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/toml-0.5.8/src/ser.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     T: ser::Serialize,
[INFO] [stdout]    |        -------------- required by this bound in `toml::to_string`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 55) stdout ----
[INFO] [stdout] error[E0277]: the trait bound `SerialGenerator<u8>: Deserialize<'_>` is not satisfied
[INFO] [stdout]   --> src/lib.rs:61:22
[INFO] [stdout]    |
[INFO] [stdout] 9  |     toml::from_str::<SerialGenerator<u8>>("value = 0\n").unwrap();
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^ the trait `Deserialize<'_>` is not implemented for `SerialGenerator<u8>`
[INFO] [stdout]    | 
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/toml-0.5.8/src/de.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     T: de::Deserialize<'de>,
[INFO] [stdout]    |        -------------------- required by this bound in `toml::from_str`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 39)
[INFO] [stdout]     src/lib.rs - (line 55)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 8 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.61s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "ee17bac4ed049e2fd0e84edf3e411ee9997fb6dd6d727b7bbfe88c9af820eae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee17bac4ed049e2fd0e84edf3e411ee9997fb6dd6d727b7bbfe88c9af820eae0", kill_on_drop: false }`
[INFO] [stdout] ee17bac4ed049e2fd0e84edf3e411ee9997fb6dd6d727b7bbfe88c9af820eae0