[INFO] crate error_defs 0.1.0 is already in cache
[INFO] extracting crate error_defs 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/error_defs/0.1.0
[INFO] extracting crate error_defs 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/error_defs/0.1.0
[INFO] validating manifest of error_defs-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_defs-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_defs-0.1.0
[INFO] finished frobbing error_defs-0.1.0
[INFO] frobbed toml for error_defs-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/error_defs/0.1.0/Cargo.toml
[INFO] started frobbing error_defs-0.1.0
[INFO] finished frobbing error_defs-0.1.0
[INFO] frobbed toml for error_defs-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/error_defs/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_defs-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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/error_defs/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] dfba298eb4b66c029f9002f424a7e3724d0b35a698d2c4d6c6b4308df2ff4645
[INFO] running `"docker" "start" "-a" "dfba298eb4b66c029f9002f424a7e3724d0b35a698d2c4d6c6b4308df2ff4645"`
[INFO] [stderr]    Compiling error_defs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `"docker" "inspect" "dfba298eb4b66c029f9002f424a7e3724d0b35a698d2c4d6c6b4308df2ff4645"`
[INFO] running `"docker" "rm" "-f" "dfba298eb4b66c029f9002f424a7e3724d0b35a698d2c4d6c6b4308df2ff4645"`
[INFO] [stdout] dfba298eb4b66c029f9002f424a7e3724d0b35a698d2c4d6c6b4308df2ff4645
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/error_defs/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] f15464f4bdd59b51c4c40c54b2adb090c4a52a0a3071f2f2ba827d8f8d7565ae
[INFO] running `"docker" "start" "-a" "f15464f4bdd59b51c4c40c54b2adb090c4a52a0a3071f2f2ba827d8f8d7565ae"`
[INFO] [stderr]    Compiling error_defs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> examples/example.rs:35:57
[INFO] [stderr]    |
[INFO] [stderr] 35 |         println!("error: Error::cause       => {:?}", e.cause());
[INFO] [stderr]    |                                                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> examples/example.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / error_defs! {
[INFO] [stderr] 8  | |     error Example<T, U: Error> {
[INFO] [stderr] 9  | |         VariantA
[INFO] [stderr] 10 | |             => "short description",
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |     }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "f15464f4bdd59b51c4c40c54b2adb090c4a52a0a3071f2f2ba827d8f8d7565ae"`
[INFO] running `"docker" "rm" "-f" "f15464f4bdd59b51c4c40c54b2adb090c4a52a0a3071f2f2ba827d8f8d7565ae"`
[INFO] [stdout] f15464f4bdd59b51c4c40c54b2adb090c4a52a0a3071f2f2ba827d8f8d7565ae
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/error_defs/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] 3877af4d8ada4d086f7b1ecd0f2aa2d6e9233a0afd8d629185ae00cfeca38420
[INFO] running `"docker" "start" "-a" "3877af4d8ada4d086f7b1ecd0f2aa2d6e9233a0afd8d629185ae00cfeca38420"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/error_defs-e3da08af5374d5fe
[INFO] [stderr]    Doc-tests error_defs
[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" "3877af4d8ada4d086f7b1ecd0f2aa2d6e9233a0afd8d629185ae00cfeca38420"`
[INFO] running `"docker" "rm" "-f" "3877af4d8ada4d086f7b1ecd0f2aa2d6e9233a0afd8d629185ae00cfeca38420"`
[INFO] [stdout] 3877af4d8ada4d086f7b1ecd0f2aa2d6e9233a0afd8d629185ae00cfeca38420