[INFO] crate test-io-dev 0.1.0 is already in cache
[INFO] extracting crate test-io-dev 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/test-io-dev/0.1.0
[INFO] extracting crate test-io-dev 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/test-io-dev/0.1.0
[INFO] validating manifest of test-io-dev-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 test-io-dev-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 test-io-dev-0.1.0
[INFO] finished frobbing test-io-dev-0.1.0
[INFO] frobbed toml for test-io-dev-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/test-io-dev/0.1.0/Cargo.toml
[INFO] started frobbing test-io-dev-0.1.0
[INFO] finished frobbing test-io-dev-0.1.0
[INFO] frobbed toml for test-io-dev-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/test-io-dev/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 test-io-dev-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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/test-io-dev/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] d7c1b1b54299b01deb990e6ce6d05ba52832accede9760d00a563ed61a6341bc
[INFO] running `"docker" "start" "-a" "d7c1b1b54299b01deb990e6ce6d05ba52832accede9760d00a563ed61a6341bc"`
[INFO] [stderr]    Compiling test-io-dev v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "d7c1b1b54299b01deb990e6ce6d05ba52832accede9760d00a563ed61a6341bc"`
[INFO] running `"docker" "rm" "-f" "d7c1b1b54299b01deb990e6ce6d05ba52832accede9760d00a563ed61a6341bc"`
[INFO] [stdout] d7c1b1b54299b01deb990e6ce6d05ba52832accede9760d00a563ed61a6341bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/test-io-dev/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] c8c447acc541de1e016abf84f98086d842db2688ec7beb9b8c7b3c0f1e2ae547
[INFO] running `"docker" "start" "-a" "c8c447acc541de1e016abf84f98086d842db2688ec7beb9b8c7b3c0f1e2ae547"`
[INFO] [stderr]    Compiling test-io-dev v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "c8c447acc541de1e016abf84f98086d842db2688ec7beb9b8c7b3c0f1e2ae547"`
[INFO] running `"docker" "rm" "-f" "c8c447acc541de1e016abf84f98086d842db2688ec7beb9b8c7b3c0f1e2ae547"`
[INFO] [stdout] c8c447acc541de1e016abf84f98086d842db2688ec7beb9b8c7b3c0f1e2ae547
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/test-io-dev/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] ac9dd9886e30e286d3599748ba3dca6339c450a99f8c6d0fffd803b98878cc26
[INFO] running `"docker" "start" "-a" "ac9dd9886e30e286d3599748ba3dca6339c450a99f8c6d0fffd803b98878cc26"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_io_dev-eac5dfef6534430a
[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" "ac9dd9886e30e286d3599748ba3dca6339c450a99f8c6d0fffd803b98878cc26"`
[INFO] running `"docker" "rm" "-f" "ac9dd9886e30e286d3599748ba3dca6339c450a99f8c6d0fffd803b98878cc26"`
[INFO] [stdout] ac9dd9886e30e286d3599748ba3dca6339c450a99f8c6d0fffd803b98878cc26