[INFO] updating cached repository intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let" "work/ex/beta-1.37-6/sources/1.36.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13d6f773a9bc4e42a997859fd22d6ae390f41bd4
[INFO] sha for GitHub repo intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let: 13d6f773a9bc4e42a997859fd22d6ae390f41bd4
[INFO] validating manifest of intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let
[INFO] finished frobbing intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let
[INFO] frobbed toml for intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let written to work/ex/beta-1.37-6/sources/1.36.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let/Cargo.toml
[INFO] started frobbing intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let
[INFO] finished frobbing intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let
[INFO] frobbed toml for intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let/Cargo.toml
[INFO] crate intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 9b750a7b024ebd80eaa74825227cfc7bb9865f8421ae2b2603e9d34e075fc0a3
[INFO] running `"docker" "start" "-a" "9b750a7b024ebd80eaa74825227cfc7bb9865f8421ae2b2603e9d34e075fc0a3"`
[INFO] [stderr]    Compiling example-x-rust-x-rustbyexample-com-x-flow_control-while_let v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `"docker" "inspect" "9b750a7b024ebd80eaa74825227cfc7bb9865f8421ae2b2603e9d34e075fc0a3"`
[INFO] running `"docker" "rm" "-f" "9b750a7b024ebd80eaa74825227cfc7bb9865f8421ae2b2603e9d34e075fc0a3"`
[INFO] [stdout] 9b750a7b024ebd80eaa74825227cfc7bb9865f8421ae2b2603e9d34e075fc0a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7b1537f2c1601ece0ec426e6c603ebdfc505f4229e0dc6a053a5012f853757ea
[INFO] running `"docker" "start" "-a" "7b1537f2c1601ece0ec426e6c603ebdfc505f4229e0dc6a053a5012f853757ea"`
[INFO] [stderr]    Compiling example-x-rust-x-rustbyexample-com-x-flow_control-while_let v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `"docker" "inspect" "7b1537f2c1601ece0ec426e6c603ebdfc505f4229e0dc6a053a5012f853757ea"`
[INFO] running `"docker" "rm" "-f" "7b1537f2c1601ece0ec426e6c603ebdfc505f4229e0dc6a053a5012f853757ea"`
[INFO] [stdout] 7b1537f2c1601ece0ec426e6c603ebdfc505f4229e0dc6a053a5012f853757ea
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/intrepion/example-x-rust-x-rustbyexample-com-x-flow_control-while_let:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 03d0bdc08473eed57899f2ba6ba2751fb434bde477dd4b9e35cbcc8b87d8537b
[INFO] running `"docker" "start" "-a" "03d0bdc08473eed57899f2ba6ba2751fb434bde477dd4b9e35cbcc8b87d8537b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/example_x_rust_x_rustbyexample_com_x_flow_control_while_let-018c6a4893cf6946
[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" "03d0bdc08473eed57899f2ba6ba2751fb434bde477dd4b9e35cbcc8b87d8537b"`
[INFO] running `"docker" "rm" "-f" "03d0bdc08473eed57899f2ba6ba2751fb434bde477dd4b9e35cbcc8b87d8537b"`
[INFO] [stdout] 03d0bdc08473eed57899f2ba6ba2751fb434bde477dd4b9e35cbcc8b87d8537b