[INFO] crate error_core 0.1.0 is already in cache
[INFO] extracting crate error_core 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/error_core/0.1.0
[INFO] extracting crate error_core 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/error_core/0.1.0
[INFO] validating manifest of error_core-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 error_core-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 error_core-0.1.0
[INFO] finished frobbing error_core-0.1.0
[INFO] frobbed toml for error_core-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/error_core/0.1.0/Cargo.toml
[INFO] started frobbing error_core-0.1.0
[INFO] finished frobbing error_core-0.1.0
[INFO] frobbed toml for error_core-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/error_core/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 error_core-0.1.0 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-3/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/error_core/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 09f62e1f13b773ae9b7be21683a1bc9b6aeb9f01ec1952ccdcc3a5d1e059da30
[INFO] running `"docker" "start" "-a" "09f62e1f13b773ae9b7be21683a1bc9b6aeb9f01ec1952ccdcc3a5d1e059da30"`
[INFO] [stderr]    Compiling error_core v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lib.rs:8:32
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn cause(&self) -> Option<&Error> { None }
[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 0.11s
[INFO] running `"docker" "inspect" "09f62e1f13b773ae9b7be21683a1bc9b6aeb9f01ec1952ccdcc3a5d1e059da30"`
[INFO] running `"docker" "rm" "-f" "09f62e1f13b773ae9b7be21683a1bc9b6aeb9f01ec1952ccdcc3a5d1e059da30"`
[INFO] [stdout] 09f62e1f13b773ae9b7be21683a1bc9b6aeb9f01ec1952ccdcc3a5d1e059da30
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/error_core/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8a32a599b7aeffe9e8f9ec539f3d4ddbbdb65fe8c95652a70cea3f5348f47245
[INFO] running `"docker" "start" "-a" "8a32a599b7aeffe9e8f9ec539f3d4ddbbdb65fe8c95652a70cea3f5348f47245"`
[INFO] [stderr]    Compiling error_core v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/lib.rs:8:32
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn cause(&self) -> Option<&Error> { None }
[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 0.29s
[INFO] running `"docker" "inspect" "8a32a599b7aeffe9e8f9ec539f3d4ddbbdb65fe8c95652a70cea3f5348f47245"`
[INFO] running `"docker" "rm" "-f" "8a32a599b7aeffe9e8f9ec539f3d4ddbbdb65fe8c95652a70cea3f5348f47245"`
[INFO] [stdout] 8a32a599b7aeffe9e8f9ec539f3d4ddbbdb65fe8c95652a70cea3f5348f47245
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/error_core/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] e1f8baaa11708f9c420b3eaca8ed091ffcf04b8e72e4ff1e741e2869f337be8b
[INFO] running `"docker" "start" "-a" "e1f8baaa11708f9c420b3eaca8ed091ffcf04b8e72e4ff1e741e2869f337be8b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/error_core-33277d14c4a625b7
[INFO] [stderr]    Doc-tests error_core
[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] [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" "e1f8baaa11708f9c420b3eaca8ed091ffcf04b8e72e4ff1e741e2869f337be8b"`
[INFO] running `"docker" "rm" "-f" "e1f8baaa11708f9c420b3eaca8ed091ffcf04b8e72e4ff1e741e2869f337be8b"`
[INFO] [stdout] e1f8baaa11708f9c420b3eaca8ed091ffcf04b8e72e4ff1e741e2869f337be8b