[INFO] fetching crate nibblet 0.1.0...
[INFO] testing nibblet-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate nibblet 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate nibblet 0.1.0
[INFO] finished tweaking crates.io crate nibblet 0.1.0
[INFO] tweaked toml for crates.io crate nibblet 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nibblet 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nibblet 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded discrimin-ant v0.1.1
[INFO] [stderr]   Downloaded discrimin-ant-proc v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a94f85f3ddf6b989d7b99eeeb4abeaa8d39011dc719c6a849dd4fabf1cf16ff3
[INFO] running `Command { std: "docker" "start" "-a" "a94f85f3ddf6b989d7b99eeeb4abeaa8d39011dc719c6a849dd4fabf1cf16ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a94f85f3ddf6b989d7b99eeeb4abeaa8d39011dc719c6a849dd4fabf1cf16ff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a94f85f3ddf6b989d7b99eeeb4abeaa8d39011dc719c6a849dd4fabf1cf16ff3", kill_on_drop: false }`
[INFO] [stdout] a94f85f3ddf6b989d7b99eeeb4abeaa8d39011dc719c6a849dd4fabf1cf16ff3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abd4074be8c1c1e1c55c4883784378a36465e7af2338117e6c13149ed68973ed
[INFO] running `Command { std: "docker" "start" "-a" "abd4074be8c1c1e1c55c4883784378a36465e7af2338117e6c13149ed68973ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling nibblet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.75s
[INFO] running `Command { std: "docker" "inspect" "abd4074be8c1c1e1c55c4883784378a36465e7af2338117e6c13149ed68973ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abd4074be8c1c1e1c55c4883784378a36465e7af2338117e6c13149ed68973ed", kill_on_drop: false }`
[INFO] [stdout] abd4074be8c1c1e1c55c4883784378a36465e7af2338117e6c13149ed68973ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fa618d45212ffce59895791c915a648e1f3fa4dcbbe9800975e9d6396772657
[INFO] running `Command { std: "docker" "start" "-a" "0fa618d45212ffce59895791c915a648e1f3fa4dcbbe9800975e9d6396772657", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling virtue v0.0.18
[INFO] [stderr]    Compiling unty v0.0.4
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling assert_matches v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling nibblet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling pretty_assertions v1.4.1
[INFO] [stderr]    Compiling bincode_derive v2.0.1
[INFO] [stderr]    Compiling discrimin-ant v0.1.1
[INFO] [stderr]    Compiling discrimin-ant-proc v0.1.1
[INFO] [stderr]    Compiling bincode v2.0.1
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 10.89s
[INFO] running `Command { std: "docker" "inspect" "0fa618d45212ffce59895791c915a648e1f3fa4dcbbe9800975e9d6396772657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa618d45212ffce59895791c915a648e1f3fa4dcbbe9800975e9d6396772657", kill_on_drop: false }`
[INFO] [stdout] 0fa618d45212ffce59895791c915a648e1f3fa4dcbbe9800975e9d6396772657
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ede4920122a0f97833896ea25843f1dc349670c81956dbffe0919a46b1d46cdf
[INFO] running `Command { std: "docker" "start" "-a" "ede4920122a0f97833896ea25843f1dc349670c81956dbffe0919a46b1d46cdf", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nibblet-05a2870cc66f9e00)
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test ser::r#struct::tests::named_field_serialization ... ok
[INFO] [stdout] test ser::r#enum::tests::variant_types_serialization ... ok
[INFO] [stdout] test ser::r#enum::tests::named_field_serialization ... ok
[INFO] [stdout] test de::r#enum::tests::unnamed_field_deserialization ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::enum_named_field ... ok
[INFO] [stdout] test de::r#struct::tests::named_field_deserialization ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::enum_variant_types_field ... ok
[INFO] [stdout] test de::r#enum::tests::named_field_deserialization ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::struct_unnamed_field ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::enum_variant_types_unit ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::enum_variant_types_unnamed ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::enum_variant_types_newtype ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::struct_named_field ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::struct_unnamed_field ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::enum_variant_types_newtype ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::struct_named_field ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::enum_unnamed_field ... ok
[INFO] [stdout] test de::r#enum::tests::variant_types_deserialization ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::enum_variant_types_field ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::enum_variant_types_unit ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::enum_variant_types_unnamed ... ok
[INFO] [stdout] test de::r#struct::tests::unnamed_field_deserialization ... ok
[INFO] [stdout] test ser::r#enum::tests::unnamed_field_serialization ... ok
[INFO] [stdout] test tests::objects::test::bincode_::de::enum_unnamed_field ... ok
[INFO] [stdout] test ser::r#struct::tests::unnamed_field_serialization ... ok
[INFO] [stdout] test tests::objects::test::bincode_::ser::enum_named_field ... ok
[INFO] [stderr]    Doc-tests nibblet
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - derive_deserialize (line 33) ... ok
[INFO] [stdout] test src/lib.rs - derive_serialize (line 10) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ede4920122a0f97833896ea25843f1dc349670c81956dbffe0919a46b1d46cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede4920122a0f97833896ea25843f1dc349670c81956dbffe0919a46b1d46cdf", kill_on_drop: false }`
[INFO] [stdout] ede4920122a0f97833896ea25843f1dc349670c81956dbffe0919a46b1d46cdf