[INFO] crate serde_eetf 0.2.0 is already in cache
[INFO] extracting crate serde_eetf 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/serde_eetf/0.2.0
[INFO] extracting crate serde_eetf 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_eetf/0.2.0
[INFO] validating manifest of serde_eetf-0.2.0 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 serde_eetf-0.2.0 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 serde_eetf-0.2.0
[INFO] finished frobbing serde_eetf-0.2.0
[INFO] frobbed toml for serde_eetf-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/serde_eetf/0.2.0/Cargo.toml
[INFO] started frobbing serde_eetf-0.2.0
[INFO] finished frobbing serde_eetf-0.2.0
[INFO] frobbed toml for serde_eetf-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_eetf/0.2.0/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 serde_eetf-0.2.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_eetf/0.2.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a4922c658e5d2e0fa705351fa63adb9b0d775046c546c4f9cec5b364ed37b06e
[INFO] running `"docker" "start" "-a" "a4922c658e5d2e0fa705351fa63adb9b0d775046c546c4f9cec5b364ed37b06e"`
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling eetf v0.4.0
[INFO] [stderr]    Compiling serde_eetf v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.22s
[INFO] running `"docker" "inspect" "a4922c658e5d2e0fa705351fa63adb9b0d775046c546c4f9cec5b364ed37b06e"`
[INFO] running `"docker" "rm" "-f" "a4922c658e5d2e0fa705351fa63adb9b0d775046c546c4f9cec5b364ed37b06e"`
[INFO] [stdout] a4922c658e5d2e0fa705351fa63adb9b0d775046c546c4f9cec5b364ed37b06e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_eetf/0.2.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] d3560d33d02c5b45bb1dab8081118a5032349d364dc2dc618ca3e598d4338ba5
[INFO] running `"docker" "start" "-a" "d3560d33d02c5b45bb1dab8081118a5032349d364dc2dc618ca3e598d4338ba5"`
[INFO] [stderr]    Compiling serde_eetf v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `AnotherOption`
[INFO] [stderr]    --> src/ser.rs:567:13
[INFO] [stderr]     |
[INFO] [stderr] 567 |             AnotherOption,
[INFO] [stderr]     |             ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.98s
[INFO] running `"docker" "inspect" "d3560d33d02c5b45bb1dab8081118a5032349d364dc2dc618ca3e598d4338ba5"`
[INFO] running `"docker" "rm" "-f" "d3560d33d02c5b45bb1dab8081118a5032349d364dc2dc618ca3e598d4338ba5"`
[INFO] [stdout] d3560d33d02c5b45bb1dab8081118a5032349d364dc2dc618ca3e598d4338ba5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/serde_eetf/0.2.0:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 58d09e5001b5af36336fc9a9802b3e28f8993a5445c54123cde91f1ca038a179
[INFO] running `"docker" "start" "-a" "58d09e5001b5af36336fc9a9802b3e28f8993a5445c54123cde91f1ca038a179"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/serde_eetf-aa3d0a885992183c
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test ser::tests::test_binaries_tuples_and_lists ... ok
[INFO] [stdout] test de::tests::test_unsigned_ints_and_structs ... ok
[INFO] [stdout] test de::tests::test_unit_variant ... ok
[INFO] [stdout] test de::tests::test_tuple_variant ... ok
[INFO] [stdout] test de::tests::test_option ... ok
[INFO] [stdout] test ser::tests::test_newtype_variant ... ok
[INFO] [stdout] test ser::tests::test_option ... ok
[INFO] [stdout] test de::tests::test_binaries_tuples_and_lists ... ok
[INFO] [stdout] test ser::tests::test_unit_variant ... ok
[INFO] [stdout] test ser::tests::test_signed_ints_and_tuple_structs ... ok
[INFO] [stdout] test ser::tests::test_unsigned_ints_and_structs ... ok
[INFO] [stdout] test ser::tests::test_tuple_variant ... ok
[INFO] [stdout] test de::tests::test_signed_ints_and_tuple_structs ... ok
[INFO] [stderr]    Doc-tests serde_eetf
[INFO] [stdout] test de::tests::test_newtype_variant ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "58d09e5001b5af36336fc9a9802b3e28f8993a5445c54123cde91f1ca038a179"`
[INFO] running `"docker" "rm" "-f" "58d09e5001b5af36336fc9a9802b3e28f8993a5445c54123cde91f1ca038a179"`
[INFO] [stdout] 58d09e5001b5af36336fc9a9802b3e28f8993a5445c54123cde91f1ca038a179