[INFO] crate practicum 0.0.0 is already in cache
[INFO] extracting crate practicum 0.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/practicum/0.0.0
[INFO] extracting crate practicum 0.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/practicum/0.0.0
[INFO] validating manifest of practicum-0.0.0 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 practicum-0.0.0 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 practicum-0.0.0
[INFO] finished frobbing practicum-0.0.0
[INFO] frobbed toml for practicum-0.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/practicum/0.0.0/Cargo.toml
[INFO] started frobbing practicum-0.0.0
[INFO] finished frobbing practicum-0.0.0
[INFO] frobbed toml for practicum-0.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/practicum/0.0.0/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 practicum-0.0.0 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/practicum/0.0.0:/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] be12fb9aada69cb7e3b732bac323477eba24ff589812db125630e79c5582356f
[INFO] running `"docker" "start" "-a" "be12fb9aada69cb7e3b732bac323477eba24ff589812db125630e79c5582356f"`
[INFO] [stderr]    Compiling practicum v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `"docker" "inspect" "be12fb9aada69cb7e3b732bac323477eba24ff589812db125630e79c5582356f"`
[INFO] running `"docker" "rm" "-f" "be12fb9aada69cb7e3b732bac323477eba24ff589812db125630e79c5582356f"`
[INFO] [stdout] be12fb9aada69cb7e3b732bac323477eba24ff589812db125630e79c5582356f
[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/practicum/0.0.0:/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] fed549e052ec88c19f49b3c0af778e55923904ca74e167236d820387c24436ca
[INFO] running `"docker" "start" "-a" "fed549e052ec88c19f49b3c0af778e55923904ca74e167236d820387c24436ca"`
[INFO] [stderr]    Compiling practicum v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "fed549e052ec88c19f49b3c0af778e55923904ca74e167236d820387c24436ca"`
[INFO] running `"docker" "rm" "-f" "fed549e052ec88c19f49b3c0af778e55923904ca74e167236d820387c24436ca"`
[INFO] [stdout] fed549e052ec88c19f49b3c0af778e55923904ca74e167236d820387c24436ca
[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/practicum/0.0.0:/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] d19aa681a42e5fcf817eb2e16beb9f4b5b34384f906792243550bab5d8a6fe53
[INFO] running `"docker" "start" "-a" "d19aa681a42e5fcf817eb2e16beb9f4b5b34384f906792243550bab5d8a6fe53"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/practicum-6bbfaceb9a03d34b
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d19aa681a42e5fcf817eb2e16beb9f4b5b34384f906792243550bab5d8a6fe53"`
[INFO] running `"docker" "rm" "-f" "d19aa681a42e5fcf817eb2e16beb9f4b5b34384f906792243550bab5d8a6fe53"`
[INFO] [stdout] d19aa681a42e5fcf817eb2e16beb9f4b5b34384f906792243550bab5d8a6fe53