[INFO] updating cached repository intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then" "work/ex/beta-1.38-1/sources/1.37.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bea8951e68a9121b6768852f35eefa7d33fc1f39
[INFO] sha for GitHub repo intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then: bea8951e68a9121b6768852f35eefa7d33fc1f39
[INFO] validating manifest of intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then 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 intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then 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 intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then
[INFO] finished frobbing intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then
[INFO] frobbed toml for intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then written to work/ex/beta-1.38-1/sources/1.37.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then/Cargo.toml
[INFO] started frobbing intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then
[INFO] finished frobbing intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then
[INFO] frobbed toml for intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then/Cargo.toml
[INFO] crate intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then 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 intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then:/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] 0451118b14896772689820220b3e09e0cc37875e0b4fca2258448593272aae6e
[INFO] running `"docker" "start" "-a" "0451118b14896772689820220b3e09e0cc37875e0b4fca2258448593272aae6e"`
[INFO] [stderr]    Compiling example-x-rust-x-rustbyexample-com-x-error-and_then v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "0451118b14896772689820220b3e09e0cc37875e0b4fca2258448593272aae6e"`
[INFO] running `"docker" "rm" "-f" "0451118b14896772689820220b3e09e0cc37875e0b4fca2258448593272aae6e"`
[INFO] [stdout] 0451118b14896772689820220b3e09e0cc37875e0b4fca2258448593272aae6e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then:/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] af2cbed2204b2b9ef5a594ed4877e6cc3d4a5183c20579c4978057597b5aff8f
[INFO] running `"docker" "start" "-a" "af2cbed2204b2b9ef5a594ed4877e6cc3d4a5183c20579c4978057597b5aff8f"`
[INFO] [stderr]    Compiling example-x-rust-x-rustbyexample-com-x-error-and_then v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "af2cbed2204b2b9ef5a594ed4877e6cc3d4a5183c20579c4978057597b5aff8f"`
[INFO] running `"docker" "rm" "-f" "af2cbed2204b2b9ef5a594ed4877e6cc3d4a5183c20579c4978057597b5aff8f"`
[INFO] [stdout] af2cbed2204b2b9ef5a594ed4877e6cc3d4a5183c20579c4978057597b5aff8f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-error-and_then:/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] 7f2e07bfb58a2daaa3d3f8fb5f7360d6ef11376d8a07770e79f499969f6c133b
[INFO] running `"docker" "start" "-a" "7f2e07bfb58a2daaa3d3f8fb5f7360d6ef11376d8a07770e79f499969f6c133b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/example_x_rust_x_rustbyexample_com_x_error_and_then-63f620d8f59aaebd
[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" "7f2e07bfb58a2daaa3d3f8fb5f7360d6ef11376d8a07770e79f499969f6c133b"`
[INFO] running `"docker" "rm" "-f" "7f2e07bfb58a2daaa3d3f8fb5f7360d6ef11376d8a07770e79f499969f6c133b"`
[INFO] [stdout] 7f2e07bfb58a2daaa3d3f8fb5f7360d6ef11376d8a07770e79f499969f6c133b