[INFO] updating cached repository OffBlockway/OffBlockwayMiningClient
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/OffBlockway/OffBlockwayMiningClient
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/OffBlockway/OffBlockwayMiningClient" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/OffBlockway/OffBlockwayMiningClient"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/OffBlockway/OffBlockwayMiningClient'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/OffBlockway/OffBlockwayMiningClient" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/OffBlockway/OffBlockwayMiningClient"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/OffBlockway/OffBlockwayMiningClient'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6fc1cfb70b1656b364916575b4405331ae0f6a8f
[INFO] sha for GitHub repo OffBlockway/OffBlockwayMiningClient: 6fc1cfb70b1656b364916575b4405331ae0f6a8f
[INFO] validating manifest of OffBlockway/OffBlockwayMiningClient on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of OffBlockway/OffBlockwayMiningClient on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing OffBlockway/OffBlockwayMiningClient
[INFO] finished frobbing OffBlockway/OffBlockwayMiningClient
[INFO] frobbed toml for OffBlockway/OffBlockwayMiningClient written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/OffBlockway/OffBlockwayMiningClient/Cargo.toml
[INFO] started frobbing OffBlockway/OffBlockwayMiningClient
[INFO] finished frobbing OffBlockway/OffBlockwayMiningClient
[INFO] frobbed toml for OffBlockway/OffBlockwayMiningClient written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/OffBlockway/OffBlockwayMiningClient/Cargo.toml
[INFO] crate OffBlockway/OffBlockwayMiningClient already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking OffBlockway/OffBlockwayMiningClient against try#06a150c7d11500b41499224f165e9de1de096768 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-4/try#06a150c7d11500b41499224f165e9de1de096768:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/OffBlockway/OffBlockwayMiningClient:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+06a150c7d11500b41499224f165e9de1de096768-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f6a9f96519cbd084384ab115a4805edd38240b9b0af6d23c3c5781c532ae8036
[INFO] running `"docker" "start" "-a" "f6a9f96519cbd084384ab115a4805edd38240b9b0af6d23c3c5781c532ae8036"`
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking sha3 v0.6.0
[INFO] [stderr]     Checking off_blockway v0.0.8
[INFO] [stderr]     Checking mining_client v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         file.read_to_string( &mut buffer );
[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] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         file.read_to_string( &mut buffer );
[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 4.06s
[INFO] running `"docker" "inspect" "f6a9f96519cbd084384ab115a4805edd38240b9b0af6d23c3c5781c532ae8036"`
[INFO] running `"docker" "rm" "-f" "f6a9f96519cbd084384ab115a4805edd38240b9b0af6d23c3c5781c532ae8036"`
[INFO] [stdout] f6a9f96519cbd084384ab115a4805edd38240b9b0af6d23c3c5781c532ae8036