Dec 18 14:40:54.838 INFO checking keep-0.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 14:40:54.838 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/keep/0.1.0:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:40:55.056 INFO [stdout] 51a498a098f738fb9bd2962c54792b0cfccdb7d3344fdc42058bb153b865e18b
Dec 18 14:40:55.059 INFO running `"docker" "start" "-a" "51a498a098f738fb9bd2962c54792b0cfccdb7d3344fdc42058bb153b865e18b"`
Dec 18 14:40:55.920 INFO [stderr]     Checking git2 v0.7.5
Dec 18 14:40:59.508 INFO [stderr]     Checking keep v0.1.0 (/opt/crater/workdir)
Dec 18 14:41:00.288 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 14:41:00.288 INFO [stderr]   --> src/lib.rs:10:1
Dec 18 14:41:00.288 INFO [stderr]    |
Dec 18 14:41:00.288 INFO [stderr] 10 | / error_chain!{
Dec 18 14:41:00.288 INFO [stderr] 11 | |     foreign_links{
Dec 18 14:41:00.288 INFO [stderr] 12 | |         Git(::git2::Error);
Dec 18 14:41:00.288 INFO [stderr] 13 | |     }
Dec 18 14:41:00.288 INFO [stderr] 14 | | }
Dec 18 14:41:00.288 INFO [stderr]    | |_^
Dec 18 14:41:00.288 INFO [stderr]    |
Dec 18 14:41:00.288 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 14:41:00.288 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 14:41:00.288 INFO [stderr] 
Dec 18 14:41:00.312 INFO [stderr] warning: unused variable: `e`
Dec 18 14:41:00.312 INFO [stderr]   --> src/lib.rs:29:17
Dec 18 14:41:00.312 INFO [stderr]    |
Dec 18 14:41:00.312 INFO [stderr] 29 |             Err(e) => {
Dec 18 14:41:00.312 INFO [stderr]    |                 ^ help: consider using `_e` instead
Dec 18 14:41:00.312 INFO [stderr]    |
Dec 18 14:41:00.312 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 14:41:00.312 INFO [stderr] 
Dec 18 14:41:00.312 INFO [stderr] warning: unused variable: `reference`
Dec 18 14:41:00.312 INFO [stderr]    --> src/lib.rs:178:13
Dec 18 14:41:00.312 INFO [stderr]     |
Dec 18 14:41:00.312 INFO [stderr] 178 |         let reference = Some("HEAD");
Dec 18 14:41:00.312 INFO [stderr]     |             ^^^^^^^^^ help: consider using `_reference` instead
Dec 18 14:41:00.312 INFO [stderr] 
Dec 18 14:41:00.372 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 18 14:41:00.372 INFO [stderr]   --> src/lib.rs:10:1
Dec 18 14:41:00.372 INFO [stderr]    |
Dec 18 14:41:00.372 INFO [stderr] 10 | / error_chain!{
Dec 18 14:41:00.372 INFO [stderr] 11 | |     foreign_links{
Dec 18 14:41:00.372 INFO [stderr] 12 | |         Git(::git2::Error);
Dec 18 14:41:00.372 INFO [stderr] 13 | |     }
Dec 18 14:41:00.372 INFO [stderr] 14 | | }
Dec 18 14:41:00.372 INFO [stderr]    | |_^
Dec 18 14:41:00.372 INFO [stderr]    |
Dec 18 14:41:00.372 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 14:41:00.372 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 18 14:41:00.372 INFO [stderr] 
Dec 18 14:41:00.386 INFO [stderr] warning: unused variable: `src`
Dec 18 14:41:00.386 INFO [stderr]    --> src/lib.rs:201:13
Dec 18 14:41:00.386 INFO [stderr]     |
Dec 18 14:41:00.386 INFO [stderr] 201 |         let src = Path::new("samples");
Dec 18 14:41:00.386 INFO [stderr]     |             ^^^ help: consider using `_src` instead
Dec 18 14:41:00.386 INFO [stderr]     |
Dec 18 14:41:00.386 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 14:41:00.386 INFO [stderr] 
Dec 18 14:41:00.386 INFO [stderr] warning: unused variable: `e`
Dec 18 14:41:00.386 INFO [stderr]   --> src/lib.rs:29:17
Dec 18 14:41:00.386 INFO [stderr]    |
Dec 18 14:41:00.386 INFO [stderr] 29 |             Err(e) => {
Dec 18 14:41:00.386 INFO [stderr]    |                 ^ help: consider using `_e` instead
Dec 18 14:41:00.386 INFO [stderr] 
Dec 18 14:41:00.386 INFO [stderr] warning: unused variable: `reference`
Dec 18 14:41:00.386 INFO [stderr]    --> src/lib.rs:178:13
Dec 18 14:41:00.386 INFO [stderr]     |
Dec 18 14:41:00.387 INFO [stderr] 178 |         let reference = Some("HEAD");
Dec 18 14:41:00.387 INFO [stderr]     |             ^^^^^^^^^ help: consider using `_reference` instead
Dec 18 14:41:00.387 INFO [stderr] 
Dec 18 14:41:00.464 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.66s
Dec 18 14:41:00.999 INFO running `"docker" "inspect" "51a498a098f738fb9bd2962c54792b0cfccdb7d3344fdc42058bb153b865e18b"`
Dec 18 14:41:01.126 INFO running `"docker" "rm" "-f" "51a498a098f738fb9bd2962c54792b0cfccdb7d3344fdc42058bb153b865e18b"`
Dec 18 14:41:01.235 INFO [stdout] 51a498a098f738fb9bd2962c54792b0cfccdb7d3344fdc42058bb153b865e18b