[INFO] updating cached repository Inityx/tetroids
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Inityx/tetroids
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Inityx/tetroids" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/Inityx/tetroids"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/Inityx/tetroids'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Inityx/tetroids" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/Inityx/tetroids"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/Inityx/tetroids'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 13a81c31fdbeec94d2adf43f08f6970982cf2dbe
[INFO] sha for GitHub repo Inityx/tetroids: 13a81c31fdbeec94d2adf43f08f6970982cf2dbe
[INFO] validating manifest of Inityx/tetroids on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Inityx/tetroids on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Inityx/tetroids
[INFO] finished frobbing Inityx/tetroids
[INFO] frobbed toml for Inityx/tetroids written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/Inityx/tetroids/Cargo.toml
[INFO] started frobbing Inityx/tetroids
[INFO] finished frobbing Inityx/tetroids
[INFO] frobbed toml for Inityx/tetroids written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/Inityx/tetroids/Cargo.toml
[INFO] crate Inityx/tetroids already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Inityx/tetroids against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-0/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/Inityx/tetroids:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ca5aba05f0b0b283130721f295321e518071b6cb9033fbfe837ed4d912fc1fdc
[INFO] running `"docker" "start" "-a" "ca5aba05f0b0b283130721f295321e518071b6cb9033fbfe837ed4d912fc1fdc"`
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling x11 v2.14.0
[INFO] [stderr]     Checking tetroids v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/gui/mod.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let result = match key {
[INFO] [stderr]     |                     ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `square`
[INFO] [stderr]    --> src/gui/mod.rs:283:25
[INFO] [stderr]     |
[INFO] [stderr] 283 |             if let Some(square) = square {
[INFO] [stderr]     |                         ^^^^^^ help: consider prefixing with an underscore: `_square`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/board.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let mut board = &mut self.data;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]    --> src/gui/mod.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |                 let result = match key {
[INFO] [stderr]     |                     ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `square`
[INFO] [stderr]    --> src/gui/mod.rs:283:25
[INFO] [stderr]     |
[INFO] [stderr] 283 |             if let Some(square) = square {
[INFO] [stderr]     |                         ^^^^^^ help: consider prefixing with an underscore: `_square`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/game/board.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let mut board = &mut self.data;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.35s
[INFO] running `"docker" "inspect" "ca5aba05f0b0b283130721f295321e518071b6cb9033fbfe837ed4d912fc1fdc"`
[INFO] running `"docker" "rm" "-f" "ca5aba05f0b0b283130721f295321e518071b6cb9033fbfe837ed4d912fc1fdc"`
[INFO] [stdout] ca5aba05f0b0b283130721f295321e518071b6cb9033fbfe837ed4d912fc1fdc