[INFO] updating cached repository rexim/working-opengl-example-in-rust-omg-iwanna-die
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rexim/working-opengl-example-in-rust-omg-iwanna-die
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d62967a15bd44b8eb6f586bf3610f0c8d0515b3e
[INFO] sha for GitHub repo rexim/working-opengl-example-in-rust-omg-iwanna-die: d62967a15bd44b8eb6f586bf3610f0c8d0515b3e
[INFO] validating manifest of rexim/working-opengl-example-in-rust-omg-iwanna-die on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rexim/working-opengl-example-in-rust-omg-iwanna-die on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rexim/working-opengl-example-in-rust-omg-iwanna-die
[INFO] finished frobbing rexim/working-opengl-example-in-rust-omg-iwanna-die
[INFO] frobbed toml for rexim/working-opengl-example-in-rust-omg-iwanna-die written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die/Cargo.toml
[INFO] started frobbing rexim/working-opengl-example-in-rust-omg-iwanna-die
[INFO] finished frobbing rexim/working-opengl-example-in-rust-omg-iwanna-die
[INFO] frobbed toml for rexim/working-opengl-example-in-rust-omg-iwanna-die written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die/Cargo.toml
[INFO] crate rexim/working-opengl-example-in-rust-omg-iwanna-die already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking rexim/working-opengl-example-in-rust-omg-iwanna-die against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-2/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/rexim/working-opengl-example-in-rust-omg-iwanna-die:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 323085a787f93c3c75c5dc254c67b26ebd734a1a835e7f1f4c9be435873bebae
[INFO] running `"docker" "start" "-a" "323085a787f93c3c75c5dc254c67b26ebd734a1a835e7f1f4c9be435873bebae"`
[INFO] [stderr]     Checking sdl2-sys v0.30.0
[INFO] [stderr]     Checking sdl2 v0.30.0
[INFO] [stderr]     Checking opengl-probe v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `context`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let context = window.gl_create_context().unwrap();
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `vs` is never read
[INFO] [stderr]    --> src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let mut vs = 0;
[INFO] [stderr]     |             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `fs` is never read
[INFO] [stderr]    --> src/main.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |     let mut fs = 0;
[INFO] [stderr]     |             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `shader_program` is never read
[INFO] [stderr]    --> src/main.rs:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |     let mut shader_program = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     let mut angle_loc = 0;
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] warning: unused variable: `context`
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let context = window.gl_create_context().unwrap();
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_context`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `vs` is never read
[INFO] [stderr]    --> src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let mut vs = 0;
[INFO] [stderr]     |             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `fs` is never read
[INFO] [stderr]    --> src/main.rs:150:13
[INFO] [stderr]     |
[INFO] [stderr] 150 |     let mut fs = 0;
[INFO] [stderr]     |             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `shader_program` is never read
[INFO] [stderr]    --> src/main.rs:176:13
[INFO] [stderr]     |
[INFO] [stderr] 176 |     let mut shader_program = 0;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `n` should have an upper case name
[INFO] [stderr]   --> src/main.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 21 |     const n: usize = 20;
[INFO] [stderr]    |           ^ help: convert the identifier to upper case: `N`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `base` should have an upper case name
[INFO] [stderr]   --> src/main.rs:22:11
[INFO] [stderr]    |
[INFO] [stderr] 22 |     const base: usize = 3;
[INFO] [stderr]    |           ^^^^ help: convert the identifier to upper case: `BASE`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |     let mut angle_loc = 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: constant `n` should have an upper case name
[INFO] [stderr]   --> src/main.rs:21:11
[INFO] [stderr]    |
[INFO] [stderr] 21 |     const n: usize = 20;
[INFO] [stderr]    |           ^ help: convert the identifier to upper case: `N`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `base` should have an upper case name
[INFO] [stderr]   --> src/main.rs:22:11
[INFO] [stderr]    |
[INFO] [stderr] 22 |     const base: usize = 3;
[INFO] [stderr]    |           ^^^^ help: convert the identifier to upper case: `BASE`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `"docker" "inspect" "323085a787f93c3c75c5dc254c67b26ebd734a1a835e7f1f4c9be435873bebae"`
[INFO] running `"docker" "rm" "-f" "323085a787f93c3c75c5dc254c67b26ebd734a1a835e7f1f4c9be435873bebae"`
[INFO] [stdout] 323085a787f93c3c75c5dc254c67b26ebd734a1a835e7f1f4c9be435873bebae