[INFO] updating cached repository prewk/subshift
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/prewk/subshift
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/prewk/subshift" "work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/subshift"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/subshift'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/prewk/subshift" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/prewk/subshift"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/prewk/subshift'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 579454fe5c96e40c5a25c5703de4001c151fb236
[INFO] sha for GitHub repo prewk/subshift: 579454fe5c96e40c5a25c5703de4001c151fb236
[INFO] validating manifest of prewk/subshift 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 prewk/subshift 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 prewk/subshift
[INFO] finished frobbing prewk/subshift
[INFO] frobbed toml for prewk/subshift written to work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/subshift/Cargo.toml
[INFO] started frobbing prewk/subshift
[INFO] finished frobbing prewk/subshift
[INFO] frobbed toml for prewk/subshift written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/prewk/subshift/Cargo.toml
[INFO] crate prewk/subshift already has a lockfile, it will not be regenerated
[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 prewk/subshift 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/subshift:/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] 2678da40fd71be95d15914bf486d1c940132b88d3a376d08fa05f0e6fd4edfda
[INFO] running `"docker" "start" "-a" "2678da40fd71be95d15914bf486d1c940132b88d3a376d08fa05f0e6fd4edfda"`
[INFO] [stderr]    Compiling num-integer v0.1.33
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling num v0.1.37
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling subshift v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.14s
[INFO] running `"docker" "inspect" "2678da40fd71be95d15914bf486d1c940132b88d3a376d08fa05f0e6fd4edfda"`
[INFO] running `"docker" "rm" "-f" "2678da40fd71be95d15914bf486d1c940132b88d3a376d08fa05f0e6fd4edfda"`
[INFO] [stdout] 2678da40fd71be95d15914bf486d1c940132b88d3a376d08fa05f0e6fd4edfda
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/subshift:/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] 3a554dbfada7e5d7817e27bd4eb6f7e632948780e9990061aaf0ccd4288c6a38
[INFO] running `"docker" "start" "-a" "3a554dbfada7e5d7817e27bd4eb6f7e632948780e9990061aaf0ccd4288c6a38"`
[INFO] [stderr]    Compiling subshift v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "3a554dbfada7e5d7817e27bd4eb6f7e632948780e9990061aaf0ccd4288c6a38"`
[INFO] running `"docker" "rm" "-f" "3a554dbfada7e5d7817e27bd4eb6f7e632948780e9990061aaf0ccd4288c6a38"`
[INFO] [stdout] 3a554dbfada7e5d7817e27bd4eb6f7e632948780e9990061aaf0ccd4288c6a38
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/prewk/subshift:/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] 160fbf4461dc707fd2362259457a22dfa5d0e315279d4aa8d0ec818ddfa61cb9
[INFO] running `"docker" "start" "-a" "160fbf4461dc707fd2362259457a22dfa5d0e315279d4aa8d0ec818ddfa61cb9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/subshift-4f5f81906ef96dfe
[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" "160fbf4461dc707fd2362259457a22dfa5d0e315279d4aa8d0ec818ddfa61cb9"`
[INFO] running `"docker" "rm" "-f" "160fbf4461dc707fd2362259457a22dfa5d0e315279d4aa8d0ec818ddfa61cb9"`
[INFO] [stdout] 160fbf4461dc707fd2362259457a22dfa5d0e315279d4aa8d0ec818ddfa61cb9