[INFO] updating cached repository echochamber/rust_hex_grid
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/echochamber/rust_hex_grid
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/echochamber/rust_hex_grid" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/echochamber/rust_hex_grid"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/echochamber/rust_hex_grid'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/echochamber/rust_hex_grid" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/echochamber/rust_hex_grid"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/echochamber/rust_hex_grid'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c9e98f95bec77dffde5ef30c8501badd56773904
[INFO] sha for GitHub repo echochamber/rust_hex_grid: c9e98f95bec77dffde5ef30c8501badd56773904
[INFO] validating manifest of echochamber/rust_hex_grid on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of echochamber/rust_hex_grid on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing echochamber/rust_hex_grid
[INFO] finished frobbing echochamber/rust_hex_grid
[INFO] frobbed toml for echochamber/rust_hex_grid written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/echochamber/rust_hex_grid/Cargo.toml
[INFO] started frobbing echochamber/rust_hex_grid
[INFO] finished frobbing echochamber/rust_hex_grid
[INFO] frobbed toml for echochamber/rust_hex_grid written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/echochamber/rust_hex_grid/Cargo.toml
[INFO] crate echochamber/rust_hex_grid already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/echochamber/rust_hex_grid/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking echochamber/rust_hex_grid against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-1/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/echochamber/rust_hex_grid:/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0508307172d6d9dda1d66b7d1631fac8c3681ad7c51db03204fdb6751bfcc296
[INFO] running `"docker" "start" "-a" "0508307172d6d9dda1d66b7d1631fac8c3681ad7c51db03204fdb6751bfcc296"`
[INFO] [stderr]     Checking pistoncore-input v0.12.0
[INFO] [stderr]     Checking gfx_core v0.3.1
[INFO] [stderr]    Compiling gfx_gl v0.3.1
[INFO] [stderr]     Checking gfx v0.10.2
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking freetype-rs v0.7.0
[INFO] [stderr]     Checking hex2d v0.1.0
[INFO] [stderr]     Checking pistoncore-window v0.19.0
[INFO] [stderr]     Checking piston-ai_behavior v0.14.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.22.1
[INFO] [stderr]     Checking pistoncore-glutin_window v0.26.1
[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]    = note: for more information, try `rustc --explain E0729`
[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]    = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking piston v0.22.1
[INFO] [stderr]     Checking piston2d-sprite v0.26.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.9.1
[INFO] [stderr]     Checking gfx_device_gl v0.9.0
[INFO] [stderr]     Checking piston-gfx_texture v0.14.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.28.2
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.27.0
[INFO] [stderr]     Checking piston_window v0.45.0
[INFO] [stderr]     Checking gfx_device_gl v0.10.0
[INFO] [stderr]     Checking board_v2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `render_args`
[INFO] [stderr]   --> src/main.rs:38:27
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Event::Render(render_args) => {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: consider prefixing with an underscore: `_render_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `width`
[INFO] [stderr]   --> src/hex_board.rs:33:6
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let width = size * 1.732058;
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_width`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]   --> src/hex_board.rs:34:6
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let height = size * 2.0;
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current`
[INFO] [stderr]   --> src/hex_board.rs:51:7
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let current = i % 6;
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_current`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `append` has been stable since 1.4.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(append)]
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/hex_board.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(append)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_attributes)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/hex_board.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(append)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `render_args`
[INFO] [stderr]   --> src/main.rs:38:27
[INFO] [stderr]    |
[INFO] [stderr] 38 |             Event::Render(render_args) => {
[INFO] [stderr]    |                           ^^^^^^^^^^^ help: consider prefixing with an underscore: `_render_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `width`
[INFO] [stderr]   --> src/hex_board.rs:33:6
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let width = size * 1.732058;
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_width`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]   --> src/hex_board.rs:34:6
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let height = size * 2.0;
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current`
[INFO] [stderr]   --> src/hex_board.rs:51:7
[INFO] [stderr]    |
[INFO] [stderr] 51 |         let current = i % 6;
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_current`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `append` has been stable since 1.4.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(append)]
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/hex_board.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(append)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_attributes)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/hex_board.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(append)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.73s
[INFO] running `"docker" "inspect" "0508307172d6d9dda1d66b7d1631fac8c3681ad7c51db03204fdb6751bfcc296"`
[INFO] running `"docker" "rm" "-f" "0508307172d6d9dda1d66b7d1631fac8c3681ad7c51db03204fdb6751bfcc296"`
[INFO] [stdout] 0508307172d6d9dda1d66b7d1631fac8c3681ad7c51db03204fdb6751bfcc296