[INFO] updating cached repository cptroot/tetris-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cptroot/tetris-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cptroot/tetris-rs" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/cptroot/tetris-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/cptroot/tetris-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cptroot/tetris-rs" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/cptroot/tetris-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/cptroot/tetris-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 570fa57f9e398b01ca6ff9c22d65a4158df41984
[INFO] sha for GitHub repo cptroot/tetris-rs: 570fa57f9e398b01ca6ff9c22d65a4158df41984
[INFO] validating manifest of cptroot/tetris-rs on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cptroot/tetris-rs on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cptroot/tetris-rs
[INFO] finished frobbing cptroot/tetris-rs
[INFO] frobbed toml for cptroot/tetris-rs written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/cptroot/tetris-rs/Cargo.toml
[INFO] started frobbing cptroot/tetris-rs
[INFO] finished frobbing cptroot/tetris-rs
[INFO] frobbed toml for cptroot/tetris-rs written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/cptroot/tetris-rs/Cargo.toml
[INFO] crate cptroot/tetris-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/cptroot/tetris-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking cptroot/tetris-rs against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-5/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/cptroot/tetris-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fa5a0c74634322098cdd5379c7a14716f8e7084f85815816473bfa4f1da38979
[INFO] running `"docker" "start" "-a" "fa5a0c74634322098cdd5379c7a14716f8e7084f85815816473bfa4f1da38979"`
[INFO] [stderr]     Checking pistoncore-input v0.14.0
[INFO] [stderr]     Checking piston2d-graphics v0.17.3
[INFO] [stderr]     Checking gfx_core v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking glutin v0.6.2
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr] warning[E0311]: the parameter type `K` may not live long enough
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |             match node.force() {
[INFO] [stderr]    |                   ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding an explicit lifetime bound for `K`
[INFO] [stderr] note: the parameter type `K` must be valid for the anonymous lifetime #1 defined on the function body at 77:9...
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         fn clone_subtree<K: Clone, V: Clone>(
[INFO] [stderr] 78 | |                 node: node::NodeRef<marker::Immut, K, V, marker::LeafOrInternal>)
[INFO] [stderr] 79 | |                 -> BTreeMap<K, V> {
[INFO] [stderr] 80 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 136| |             }
[INFO] [stderr] 137| |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr] warning[E0311]: the parameter type `V` may not live long enough
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |             match node.force() {
[INFO] [stderr]    |                   ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding an explicit lifetime bound for `V`
[INFO] [stderr] note: the parameter type `V` must be valid for the anonymous lifetime #1 defined on the function body at 77:9...
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.3/src/support/bst/map.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         fn clone_subtree<K: Clone, V: Clone>(
[INFO] [stderr] 78 | |                 node: node::NodeRef<marker::Immut, K, V, marker::LeafOrInternal>)
[INFO] [stderr] 79 | |                 -> BTreeMap<K, V> {
[INFO] [stderr] 80 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 136| |             }
[INFO] [stderr] 137| |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]     Checking pistoncore-window v0.22.1
[INFO] [stderr]     Checking pistoncore-event_loop v0.25.1
[INFO] [stderr]     Checking pistoncore-glutin_window v0.29.0
[INFO] [stderr]     Checking piston v0.25.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.10.4
[INFO] [stderr]     Checking gfx v0.12.2
[INFO] [stderr]     Checking gfx_device_gl v0.11.2
[INFO] [stderr]     Checking piston-gfx_texture v0.17.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.31.2
[INFO] [stderr]     Checking piston_window v0.52.0
[INFO] [stderr]     Checking tetris v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `piston_window::clear`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use piston_window::clear;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `piston_window::clear`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use piston_window::clear;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rotation`
[INFO] [stderr]   --> src/main.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 let rotation = 0;
[INFO] [stderr]    |                     ^^^^^^^^ help: consider prefixing with an underscore: `_rotation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/main.rs:40:21
[INFO] [stderr]    |
[INFO] [stderr] 40 |         if let Some(r) = e.render_args() {
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut x = 4.0;
[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: `rotation`
[INFO] [stderr]   --> src/main.rs:58:21
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 let rotation = 0;
[INFO] [stderr]    |                     ^^^^^^^^ help: consider prefixing with an underscore: `_rotation`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/main.rs:40:21
[INFO] [stderr]    |
[INFO] [stderr] 40 |         if let Some(r) = e.render_args() {
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut x = 4.0;
[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 38.15s
[INFO] running `"docker" "inspect" "fa5a0c74634322098cdd5379c7a14716f8e7084f85815816473bfa4f1da38979"`
[INFO] running `"docker" "rm" "-f" "fa5a0c74634322098cdd5379c7a14716f8e7084f85815816473bfa4f1da38979"`
[INFO] [stdout] fa5a0c74634322098cdd5379c7a14716f8e7084f85815816473bfa4f1da38979