[INFO] updating cached repository geostran/rustshell
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/geostran/rustshell
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/geostran/rustshell" "work/ex/beta-1.38-1/sources/1.37.0/gh/geostran/rustshell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/geostran/rustshell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/geostran/rustshell" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/geostran/rustshell"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/geostran/rustshell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f4c622d62ac81d6805e8529e2b121fa4b1b96b0f
[INFO] sha for GitHub repo geostran/rustshell: f4c622d62ac81d6805e8529e2b121fa4b1b96b0f
[INFO] validating manifest of geostran/rustshell 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 geostran/rustshell 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 geostran/rustshell
[INFO] finished frobbing geostran/rustshell
[INFO] frobbed toml for geostran/rustshell written to work/ex/beta-1.38-1/sources/1.37.0/gh/geostran/rustshell/Cargo.toml
[INFO] started frobbing geostran/rustshell
[INFO] finished frobbing geostran/rustshell
[INFO] frobbed toml for geostran/rustshell written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/geostran/rustshell/Cargo.toml
[INFO] crate geostran/rustshell 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 geostran/rustshell 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-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/geostran/rustshell:/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] 7ea7f7813c829e1cd6b08e4aa3917c76d1fd9347a824ec67b657312977b40072
[INFO] running `"docker" "start" "-a" "7ea7f7813c829e1cd6b08e4aa3917c76d1fd9347a824ec67b657312977b40072"`
[INFO] [stderr]    Compiling rustshell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             final_command.wait();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "7ea7f7813c829e1cd6b08e4aa3917c76d1fd9347a824ec67b657312977b40072"`
[INFO] running `"docker" "rm" "-f" "7ea7f7813c829e1cd6b08e4aa3917c76d1fd9347a824ec67b657312977b40072"`
[INFO] [stdout] 7ea7f7813c829e1cd6b08e4aa3917c76d1fd9347a824ec67b657312977b40072
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/geostran/rustshell:/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] f92d746bafedf9ff0cb0d3195f1f1911448820df0bb3bbdf5f4aa325bc4d2989
[INFO] running `"docker" "start" "-a" "f92d746bafedf9ff0cb0d3195f1f1911448820df0bb3bbdf5f4aa325bc4d2989"`
[INFO] [stderr]    Compiling rustshell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |             final_command.wait();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "f92d746bafedf9ff0cb0d3195f1f1911448820df0bb3bbdf5f4aa325bc4d2989"`
[INFO] running `"docker" "rm" "-f" "f92d746bafedf9ff0cb0d3195f1f1911448820df0bb3bbdf5f4aa325bc4d2989"`
[INFO] [stdout] f92d746bafedf9ff0cb0d3195f1f1911448820df0bb3bbdf5f4aa325bc4d2989
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/geostran/rustshell:/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] ed10f22ceba913953171e89564d76d184352f7bec195d1db1d286b18268b81a8
[INFO] running `"docker" "start" "-a" "ed10f22ceba913953171e89564d76d184352f7bec195d1db1d286b18268b81a8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustshell-39a772de68fd3910
[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" "ed10f22ceba913953171e89564d76d184352f7bec195d1db1d286b18268b81a8"`
[INFO] running `"docker" "rm" "-f" "ed10f22ceba913953171e89564d76d184352f7bec195d1db1d286b18268b81a8"`
[INFO] [stdout] ed10f22ceba913953171e89564d76d184352f7bec195d1db1d286b18268b81a8