[INFO] updating cached repository iammer/combine_k
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/iammer/combine_k
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/iammer/combine_k" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/iammer/combine_k"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/iammer/combine_k'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/iammer/combine_k" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/iammer/combine_k"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/iammer/combine_k'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f16ebeb319882f88ca78bdd791b55aa296399c3d
[INFO] sha for GitHub repo iammer/combine_k: f16ebeb319882f88ca78bdd791b55aa296399c3d
[INFO] validating manifest of iammer/combine_k on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of iammer/combine_k on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing iammer/combine_k
[INFO] finished frobbing iammer/combine_k
[INFO] frobbed toml for iammer/combine_k written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/iammer/combine_k/Cargo.toml
[INFO] started frobbing iammer/combine_k
[INFO] finished frobbing iammer/combine_k
[INFO] frobbed toml for iammer/combine_k written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/iammer/combine_k/Cargo.toml
[INFO] crate iammer/combine_k already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking iammer/combine_k against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/iammer/combine_k:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6b51330b45939983be1ace11e41cbccb0e67d055b0fbcee1093f7100e261fe67
[INFO] running `"docker" "start" "-a" "6b51330b45939983be1ace11e41cbccb0e67d055b0fbcee1093f7100e261fe67"`
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking combine_k v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/board/mod.rs:188:41
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn scan_sequence(dir: Direction) -> Box<Iterator<Item=usize>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=usize>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/board/mod.rs:190:18
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Box::new((0..LENGTH))
[INFO] [stderr]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/board/mod.rs:188:41
[INFO] [stderr]     |
[INFO] [stderr] 188 | fn scan_sequence(dir: Direction) -> Box<Iterator<Item=usize>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=usize>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/board/mod.rs:190:18
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Box::new((0..LENGTH))
[INFO] [stderr]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `"docker" "inspect" "6b51330b45939983be1ace11e41cbccb0e67d055b0fbcee1093f7100e261fe67"`
[INFO] running `"docker" "rm" "-f" "6b51330b45939983be1ace11e41cbccb0e67d055b0fbcee1093f7100e261fe67"`
[INFO] [stdout] 6b51330b45939983be1ace11e41cbccb0e67d055b0fbcee1093f7100e261fe67