[INFO] crate zero-formatter 0.1.0 is already in cache
[INFO] extracting crate zero-formatter 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/zero-formatter/0.1.0
[INFO] extracting crate zero-formatter 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zero-formatter/0.1.0
[INFO] validating manifest of zero-formatter-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zero-formatter-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zero-formatter-0.1.0
[INFO] finished frobbing zero-formatter-0.1.0
[INFO] frobbed toml for zero-formatter-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/zero-formatter/0.1.0/Cargo.toml
[INFO] started frobbing zero-formatter-0.1.0
[INFO] finished frobbing zero-formatter-0.1.0
[INFO] frobbed toml for zero-formatter-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zero-formatter/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing zero-formatter-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zero-formatter/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0f6f9848fff1e33d3795b80faa69423efb984216f6e0fb4abfcd4fde202ce7f9
[INFO] running `"docker" "start" "-a" "0f6f9848fff1e33d3795b80faa69423efb984216f6e0fb4abfcd4fde202ce7f9"`
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling zero-formatter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:40:32
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.38s
[INFO] running `"docker" "inspect" "0f6f9848fff1e33d3795b80faa69423efb984216f6e0fb4abfcd4fde202ce7f9"`
[INFO] running `"docker" "rm" "-f" "0f6f9848fff1e33d3795b80faa69423efb984216f6e0fb4abfcd4fde202ce7f9"`
[INFO] [stdout] 0f6f9848fff1e33d3795b80faa69423efb984216f6e0fb4abfcd4fde202ce7f9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zero-formatter/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a901bd9c77a80e56f48b7a4cb6353640e77f79cfe706c90694cc4f2b37b7c939
[INFO] running `"docker" "start" "-a" "a901bd9c77a80e56f48b7a4cb6353640e77f79cfe706c90694cc4f2b37b7c939"`
[INFO] [stderr]    Compiling zero-formatter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:40:32
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `"docker" "inspect" "a901bd9c77a80e56f48b7a4cb6353640e77f79cfe706c90694cc4f2b37b7c939"`
[INFO] running `"docker" "rm" "-f" "a901bd9c77a80e56f48b7a4cb6353640e77f79cfe706c90694cc4f2b37b7c939"`
[INFO] [stdout] a901bd9c77a80e56f48b7a4cb6353640e77f79cfe706c90694cc4f2b37b7c939
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zero-formatter/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] a7b4f04fa8e31ac506f43df7b00dcb0d59a8cfcbda316397927a11cabaa0dc76
[INFO] running `"docker" "start" "-a" "a7b4f04fa8e31ac506f43df7b00dcb0d59a8cfcbda316397927a11cabaa0dc76"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zero_formatter-2d307e9b20abb52b
[INFO] [stdout] 
[INFO] [stdout] running 56 tests
[INFO] [stdout] test has_value::tests::deserialize_u8_none ... ok
[INFO] [stdout] test object::tests::deserialize_object_none ... ok
[INFO] [stdout] test object::tests::deserialize_object ... ok
[INFO] [stdout] test object::tests::deserialize_2_tuple ... ok
[INFO] [stdout] test has_value::tests::serialize_u8_none ... ok
[INFO] [stdout] test object::tests::deserialize_struct_some ... ok
[INFO] [stdout] test object::tests::serialize_2_tuple ... ok
[INFO] [stdout] test object::tests::serialize_object ... ok
[INFO] [stdout] test object::tests::serialize_object_none ... ok
[INFO] [stdout] test object::tests::serialize_object_some ... ok
[INFO] [stdout] test object::tests::serialize_struct ... ok
[INFO] [stdout] test object::tests::serialize_struct_none ... ok
[INFO] [stdout] test object::tests::serialize_struct_some ... ok
[INFO] [stdout] test primitive::tests::deserialize_f32 ... ok
[INFO] [stdout] test primitive::tests::deserialize_f64 ... ok
[INFO] [stdout] test primitive::tests::deserialize_false ... ok
[INFO] [stdout] test primitive::tests::deserialize_i16 ... ok
[INFO] [stdout] test primitive::tests::deserialize_i32 ... ok
[INFO] [stdout] test primitive::tests::deserialize_i64 ... ok
[INFO] [stdout] test primitive::tests::deserialize_i8 ... ok
[INFO] [stdout] test primitive::tests::deserialize_str ... ok
[INFO] [stdout] test primitive::tests::deserialize_true ... ok
[INFO] [stdout] test primitive::tests::deserialize_u16 ... ok
[INFO] [stdout] test primitive::tests::deserialize_u32 ... ok
[INFO] [stdout] test primitive::tests::deserialize_u64 ... ok
[INFO] [stdout] test primitive::tests::deserialize_u8 ... ok
[INFO] [stdout] test primitive::tests::serialize_f32 ... ok
[INFO] [stdout] test primitive::tests::serialize_f64 ... ok
[INFO] [stdout] test primitive::tests::serialize_i16 ... ok
[INFO] [stdout] test primitive::tests::serialize_false ... ok
[INFO] [stdout] test has_value::tests::deserialize_u8_some ... ok
[INFO] [stdout] test primitive::tests::serialize_i64 ... ok
[INFO] [stdout] test primitive::tests::serialize_i32 ... ok
[INFO] [stdout] test object::tests::deserialize_object_versioning ... ok
[INFO] [stdout] test object::tests::deserialize_object_some ... ok
[INFO] [stdout] test object::tests::deserialize_struct_none ... ok
[INFO] [stdout] test has_value::tests::serialize_u8_some ... ok
[INFO] [stdout] test primitive::tests::serialize_i8 ... ok
[INFO] [stdout] test object::tests::deserialize_struct ... ok
[INFO] [stdout] test sequence::tests::deserialize_vec_object ... ok
[INFO] [stdout] test sequence::tests::deserialize_vec ... ok
[INFO] [stdout] test primitive::tests::serialize_u32 ... ok
[INFO] [stdout] test primitive::tests::serialize_true ... ok
[INFO] [stdout] test sequence::tests::deserialize_vec_struct ... ok
[INFO] [stdout] test sequence::tests::serialize_vec ... ok
[INFO] [stdout] test sequence::tests::serialize_vec_object ... ok
[INFO] [stdout] test sequence::tests::serialize_vec_struct ... ok
[INFO] [stdout] test primitive::tests::serialize_str ... ok
[INFO] [stdout] test time::tests::deserialize_duration ... ok
[INFO] [stdout] test time::tests::serialize_deserialize_datetime_utc ... ok
[INFO] [stdout] test time::tests::serialize_duration ... ok
[INFO] [stdout] test union::tests::serialize_deserialize_union_a ... ok
[INFO] [stdout] test union::tests::serialize_deserialize_union_b ... ok
[INFO] [stdout] test primitive::tests::serialize_u64 ... ok
[INFO] [stderr]    Doc-tests zero-formatter
[INFO] [stdout] test primitive::tests::serialize_u16 ... ok
[INFO] [stdout] test primitive::tests::serialize_u8 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 56 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/object.rs - object_formatter (line 97) ... ok
[INFO] [stdout] test src/lib.rs -  (line 14) ... ok
[INFO] [stdout] test src/object.rs - struct_formatter (line 10) ... ok
[INFO] [stdout] test src/union.rs - union_formatter (line 3) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a7b4f04fa8e31ac506f43df7b00dcb0d59a8cfcbda316397927a11cabaa0dc76"`
[INFO] running `"docker" "rm" "-f" "a7b4f04fa8e31ac506f43df7b00dcb0d59a8cfcbda316397927a11cabaa0dc76"`
[INFO] [stdout] a7b4f04fa8e31ac506f43df7b00dcb0d59a8cfcbda316397927a11cabaa0dc76