[INFO] updating cached repository rkalnins/rust-explore
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rkalnins/rust-explore
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rkalnins/rust-explore" "work/ex/beta-1.38-1/sources/1.37.0/gh/rkalnins/rust-explore"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/rkalnins/rust-explore'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rkalnins/rust-explore" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rkalnins/rust-explore"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rkalnins/rust-explore'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 577ae77ace83c91f3544a8d20e2a33eda3360011
[INFO] sha for GitHub repo rkalnins/rust-explore: 577ae77ace83c91f3544a8d20e2a33eda3360011
[INFO] validating manifest of rkalnins/rust-explore 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 rkalnins/rust-explore 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 rkalnins/rust-explore
[INFO] finished frobbing rkalnins/rust-explore
[INFO] frobbed toml for rkalnins/rust-explore written to work/ex/beta-1.38-1/sources/1.37.0/gh/rkalnins/rust-explore/Cargo.toml
[INFO] started frobbing rkalnins/rust-explore
[INFO] finished frobbing rkalnins/rust-explore
[INFO] frobbed toml for rkalnins/rust-explore written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/rkalnins/rust-explore/Cargo.toml
[INFO] crate rkalnins/rust-explore 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 rkalnins/rust-explore 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/rkalnins/rust-explore:/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] 693a37125ce6233b10a464caaaa7739163248bdd37528c5cc39f3fd469192381
[INFO] running `"docker" "start" "-a" "693a37125ce6233b10a464caaaa7739163248bdd37528c5cc39f3fd469192381"`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling cc v1.0.35
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling ferris-says v0.1.1
[INFO] [stderr]    Compiling rust-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.42s
[INFO] running `"docker" "inspect" "693a37125ce6233b10a464caaaa7739163248bdd37528c5cc39f3fd469192381"`
[INFO] running `"docker" "rm" "-f" "693a37125ce6233b10a464caaaa7739163248bdd37528c5cc39f3fd469192381"`
[INFO] [stdout] 693a37125ce6233b10a464caaaa7739163248bdd37528c5cc39f3fd469192381
[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/rkalnins/rust-explore:/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] 9d8d8797dd44a7c3dc3781f1edfb6a356b01882de98f33873f25150a92853746
[INFO] running `"docker" "start" "-a" "9d8d8797dd44a7c3dc3781f1edfb6a356b01882de98f33873f25150a92853746"`
[INFO] [stderr]    Compiling rust-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `"docker" "inspect" "9d8d8797dd44a7c3dc3781f1edfb6a356b01882de98f33873f25150a92853746"`
[INFO] running `"docker" "rm" "-f" "9d8d8797dd44a7c3dc3781f1edfb6a356b01882de98f33873f25150a92853746"`
[INFO] [stdout] 9d8d8797dd44a7c3dc3781f1edfb6a356b01882de98f33873f25150a92853746
[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/rkalnins/rust-explore:/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] d97034b8b787c97e7457e2ea6fbb57d3091000c1b2f35a35a8644107d7cf8a76
[INFO] running `"docker" "start" "-a" "d97034b8b787c97e7457e2ea6fbb57d3091000c1b2f35a35a8644107d7cf8a76"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_test-6d2001ca69d30c6b
[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" "d97034b8b787c97e7457e2ea6fbb57d3091000c1b2f35a35a8644107d7cf8a76"`
[INFO] running `"docker" "rm" "-f" "d97034b8b787c97e7457e2ea6fbb57d3091000c1b2f35a35a8644107d7cf8a76"`
[INFO] [stdout] d97034b8b787c97e7457e2ea6fbb57d3091000c1b2f35a35a8644107d7cf8a76