[INFO] updating cached repository giodamelio/little_boxes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/giodamelio/little_boxes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/giodamelio/little_boxes" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/giodamelio/little_boxes"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/giodamelio/little_boxes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/giodamelio/little_boxes" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/giodamelio/little_boxes"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/giodamelio/little_boxes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 78c2117ea1a0762b0b2a9172ce88a7b2b3f60456
[INFO] sha for GitHub repo giodamelio/little_boxes: 78c2117ea1a0762b0b2a9172ce88a7b2b3f60456
[INFO] validating manifest of giodamelio/little_boxes on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of giodamelio/little_boxes on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing giodamelio/little_boxes
[INFO] finished frobbing giodamelio/little_boxes
[INFO] frobbed toml for giodamelio/little_boxes written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/giodamelio/little_boxes/Cargo.toml
[INFO] started frobbing giodamelio/little_boxes
[INFO] finished frobbing giodamelio/little_boxes
[INFO] frobbed toml for giodamelio/little_boxes written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/giodamelio/little_boxes/Cargo.toml
[INFO] crate giodamelio/little_boxes has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking giodamelio/little_boxes against master#f66e4697ae286985ddefc53c3a047614568458bb for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-5/master#f66e4697ae286985ddefc53c3a047614568458bb:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/giodamelio/little_boxes:/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" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9bdc87739d71f2f3af50269ac40e8588f10f84604722281a2b5ec7f214b2d636
[INFO] running `"docker" "start" "-a" "9bdc87739d71f2f3af50269ac40e8588f10f84604722281a2b5ec7f214b2d636"`
[INFO] [stderr]     Checking serde v1.0.12
[INFO] [stderr]    Compiling serde_derive v1.0.12
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking little_boxes v1.6.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.82s
[INFO] running `"docker" "inspect" "9bdc87739d71f2f3af50269ac40e8588f10f84604722281a2b5ec7f214b2d636"`
[INFO] running `"docker" "rm" "-f" "9bdc87739d71f2f3af50269ac40e8588f10f84604722281a2b5ec7f214b2d636"`
[INFO] [stdout] 9bdc87739d71f2f3af50269ac40e8588f10f84604722281a2b5ec7f214b2d636