[INFO] updating cached repository intrepion/example-x-rust-x-rustbyexample-com-x-std-option [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/intrepion/example-x-rust-x-rustbyexample-com-x-std-option [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option"` [INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option"` [INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 48e8a4eda3c5524b42a376dcad30a64cb38cdf12 [INFO] sha for GitHub repo intrepion/example-x-rust-x-rustbyexample-com-x-std-option: 48e8a4eda3c5524b42a376dcad30a64cb38cdf12 [INFO] validating manifest of intrepion/example-x-rust-x-rustbyexample-com-x-std-option on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of intrepion/example-x-rust-x-rustbyexample-com-x-std-option on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing intrepion/example-x-rust-x-rustbyexample-com-x-std-option [INFO] finished frobbing intrepion/example-x-rust-x-rustbyexample-com-x-std-option [INFO] frobbed toml for intrepion/example-x-rust-x-rustbyexample-com-x-std-option written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option/Cargo.toml [INFO] started frobbing intrepion/example-x-rust-x-rustbyexample-com-x-std-option [INFO] finished frobbing intrepion/example-x-rust-x-rustbyexample-com-x-std-option [INFO] frobbed toml for intrepion/example-x-rust-x-rustbyexample-com-x-std-option written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option/Cargo.toml [INFO] crate intrepion/example-x-rust-x-rustbyexample-com-x-std-option already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking intrepion/example-x-rust-x-rustbyexample-com-x-std-option against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-2/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option:/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=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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] a657ddce28b2c12fb8cc1eb0f9057acf78558cf1c8eb0f66dc0408e39ecbe10b [INFO] running `"docker" "start" "-a" "a657ddce28b2c12fb8cc1eb0f9057acf78558cf1c8eb0f66dc0408e39ecbe10b"` [INFO] [stderr] Checking example-x-rust-x-rustbyexample-com-x-std-option v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `none` [INFO] [stderr] --> src/main.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let none: Option = None; [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_none` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `none` [INFO] [stderr] --> src/main.rs:28:9 [INFO] [stderr] | [INFO] [stderr] 28 | let none: Option = None; [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_none` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.72s [INFO] running `"docker" "inspect" "a657ddce28b2c12fb8cc1eb0f9057acf78558cf1c8eb0f66dc0408e39ecbe10b"` [INFO] running `"docker" "rm" "-f" "a657ddce28b2c12fb8cc1eb0f9057acf78558cf1c8eb0f66dc0408e39ecbe10b"` [INFO] [stdout] a657ddce28b2c12fb8cc1eb0f9057acf78558cf1c8eb0f66dc0408e39ecbe10b