[INFO] crate farbfeld 0.3.1 is already in cache
[INFO] extracting crate farbfeld 0.3.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/farbfeld/0.3.1
[INFO] extracting crate farbfeld 0.3.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/farbfeld/0.3.1
[INFO] validating manifest of farbfeld-0.3.1 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 farbfeld-0.3.1 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 farbfeld-0.3.1
[INFO] finished frobbing farbfeld-0.3.1
[INFO] frobbed toml for farbfeld-0.3.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/farbfeld/0.3.1/Cargo.toml
[INFO] started frobbing farbfeld-0.3.1
[INFO] finished frobbing farbfeld-0.3.1
[INFO] frobbed toml for farbfeld-0.3.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/farbfeld/0.3.1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing farbfeld-0.3.1 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/farbfeld/0.3.1:/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] 21636c9ec076001a37a9d29f92bd5c60501c05f9b013afe3e6137f9de139b345
[INFO] running `"docker" "start" "-a" "21636c9ec076001a37a9d29f92bd5c60501c05f9b013afe3e6137f9de139b345"`
[INFO] [stderr]    Compiling farbfeld v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:68:33
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn cause (&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "21636c9ec076001a37a9d29f92bd5c60501c05f9b013afe3e6137f9de139b345"`
[INFO] running `"docker" "rm" "-f" "21636c9ec076001a37a9d29f92bd5c60501c05f9b013afe3e6137f9de139b345"`
[INFO] [stdout] 21636c9ec076001a37a9d29f92bd5c60501c05f9b013afe3e6137f9de139b345
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/farbfeld/0.3.1:/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] d0ba31f895c4bcedc03bcf7360ac7576f424dcc5af100f370d1c0bc53f852ab5
[INFO] running `"docker" "start" "-a" "d0ba31f895c4bcedc03bcf7360ac7576f424dcc5af100f370d1c0bc53f852ab5"`
[INFO] [stderr]    Compiling farbfeld v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:68:33
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn cause (&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "d0ba31f895c4bcedc03bcf7360ac7576f424dcc5af100f370d1c0bc53f852ab5"`
[INFO] running `"docker" "rm" "-f" "d0ba31f895c4bcedc03bcf7360ac7576f424dcc5af100f370d1c0bc53f852ab5"`
[INFO] [stdout] d0ba31f895c4bcedc03bcf7360ac7576f424dcc5af100f370d1c0bc53f852ab5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/farbfeld/0.3.1:/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] e8045d06d1690db27ce61de0078cd891358816b59db5e9ab6b8dea3afbfee984
[INFO] running `"docker" "start" "-a" "e8045d06d1690db27ce61de0078cd891358816b59db5e9ab6b8dea3afbfee984"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/farbfeld-337fcb02c002cd18
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test decoder::tests::invalid_magic ... ok
[INFO] [stdout] test decoder::tests::truncate_data ... ok
[INFO] [stdout] test tests::encode ... ok
[INFO] [stdout] test tests::decode ... ok
[INFO] [stdout] test decoder::tests::truncate_header ... ok
[INFO] [stderr]    Doc-tests farbfeld
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e8045d06d1690db27ce61de0078cd891358816b59db5e9ab6b8dea3afbfee984"`
[INFO] running `"docker" "rm" "-f" "e8045d06d1690db27ce61de0078cd891358816b59db5e9ab6b8dea3afbfee984"`
[INFO] [stdout] e8045d06d1690db27ce61de0078cd891358816b59db5e9ab6b8dea3afbfee984