[INFO] crate custom_default 0.0.2 is already in cache
[INFO] extracting crate custom_default 0.0.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/custom_default/0.0.2
[INFO] extracting crate custom_default 0.0.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/custom_default/0.0.2
[INFO] validating manifest of custom_default-0.0.2 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 custom_default-0.0.2 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 custom_default-0.0.2
[INFO] finished frobbing custom_default-0.0.2
[INFO] frobbed toml for custom_default-0.0.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/custom_default/0.0.2/Cargo.toml
[INFO] started frobbing custom_default-0.0.2
[INFO] finished frobbing custom_default-0.0.2
[INFO] frobbed toml for custom_default-0.0.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/custom_default/0.0.2/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 custom_default-0.0.2 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-4/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/custom_default/0.0.2:/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] d12e4f34a201b9296a84fb348261faad81176d35a5f59083c53de52e22d80f42
[INFO] running `"docker" "start" "-a" "d12e4f34a201b9296a84fb348261faad81176d35a5f59083c53de52e22d80f42"`
[INFO] [stderr]    Compiling custom_default v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/lib.rs:40:2
[INFO] [stderr]    |
[INFO] [stderr] 40 |       return match *data {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 41 | |
[INFO] [stderr] 42 | |         Data::Struct(ref data) => {
[INFO] [stderr] 43 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 95 | |
[INFO] [stderr] 96 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `"docker" "inspect" "d12e4f34a201b9296a84fb348261faad81176d35a5f59083c53de52e22d80f42"`
[INFO] running `"docker" "rm" "-f" "d12e4f34a201b9296a84fb348261faad81176d35a5f59083c53de52e22d80f42"`
[INFO] [stdout] d12e4f34a201b9296a84fb348261faad81176d35a5f59083c53de52e22d80f42
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/custom_default/0.0.2:/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] 3b525ff57d9784dfe7e80d4f6391cbd4151d45015a89eff07d11c853a12870ee
[INFO] running `"docker" "start" "-a" "3b525ff57d9784dfe7e80d4f6391cbd4151d45015a89eff07d11c853a12870ee"`
[INFO] [stderr]    Compiling custom_default v0.0.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/lib.rs:40:2
[INFO] [stderr]    |
[INFO] [stderr] 40 |       return match *data {
[INFO] [stderr]    |  _____^
[INFO] [stderr] 41 | |
[INFO] [stderr] 42 | |         Data::Struct(ref data) => {
[INFO] [stderr] 43 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 95 | |
[INFO] [stderr] 96 | |     };
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "3b525ff57d9784dfe7e80d4f6391cbd4151d45015a89eff07d11c853a12870ee"`
[INFO] running `"docker" "rm" "-f" "3b525ff57d9784dfe7e80d4f6391cbd4151d45015a89eff07d11c853a12870ee"`
[INFO] [stdout] 3b525ff57d9784dfe7e80d4f6391cbd4151d45015a89eff07d11c853a12870ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/custom_default/0.0.2:/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] 7462682dd6888f2bab9057bcdb1252e43a3ed1c9d06ac6d86c1e3f12541831f4
[INFO] running `"docker" "start" "-a" "7462682dd6888f2bab9057bcdb1252e43a3ed1c9d06ac6d86c1e3f12541831f4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/custom_default-79f54c09482324b9
[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] [stderr]    Doc-tests custom_default
[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" "7462682dd6888f2bab9057bcdb1252e43a3ed1c9d06ac6d86c1e3f12541831f4"`
[INFO] running `"docker" "rm" "-f" "7462682dd6888f2bab9057bcdb1252e43a3ed1c9d06ac6d86c1e3f12541831f4"`
[INFO] [stdout] 7462682dd6888f2bab9057bcdb1252e43a3ed1c9d06ac6d86c1e3f12541831f4