[INFO] updating cached repository ruipserra/learn_opengl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ruipserra/learn_opengl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ruipserra/learn_opengl" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ruipserra/learn_opengl"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ruipserra/learn_opengl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ruipserra/learn_opengl" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ruipserra/learn_opengl"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ruipserra/learn_opengl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c7a16edad007d27d9baba52d5b0f42e75a9d96b
[INFO] sha for GitHub repo ruipserra/learn_opengl: 6c7a16edad007d27d9baba52d5b0f42e75a9d96b
[INFO] validating manifest of ruipserra/learn_opengl 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 ruipserra/learn_opengl 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 ruipserra/learn_opengl
[INFO] finished frobbing ruipserra/learn_opengl
[INFO] frobbed toml for ruipserra/learn_opengl written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/ruipserra/learn_opengl/Cargo.toml
[INFO] started frobbing ruipserra/learn_opengl
[INFO] finished frobbing ruipserra/learn_opengl
[INFO] frobbed toml for ruipserra/learn_opengl written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ruipserra/learn_opengl/Cargo.toml
[INFO] crate ruipserra/learn_opengl 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ruipserra/learn_opengl against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/ruipserra/learn_opengl:/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] b53832f027f5bf3692dc0a29a6402a1247571c2f4d0489d6b2fe973ea1e7cb1b
[INFO] running `"docker" "start" "-a" "b53832f027f5bf3692dc0a29a6402a1247571c2f4d0489d6b2fe973ea1e7cb1b"`
[INFO] [stderr]     Checking num_cpus v1.3.0
[INFO] [stderr]     Checking num-integer v0.1.33
[INFO] [stderr]    Compiling gl v0.6.1
[INFO] [stderr]     Checking rayon v0.6.0
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking num-rational v0.1.36
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.11
[INFO] [stderr]     Checking image v0.12.3
[INFO] [stderr]     Checking learn_opengl v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `from_extension`
[INFO] [stderr]    --> src/program.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn from_extension(ext: &str) -> Option<ShaderType> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_extension`
[INFO] [stderr]    --> src/program.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn from_extension(ext: &str) -> Option<ShaderType> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/01_hello_window.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     unsafe { window.make_current() };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/01_hello_window.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     unsafe { window.make_current() };
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.93s
[INFO] running `"docker" "inspect" "b53832f027f5bf3692dc0a29a6402a1247571c2f4d0489d6b2fe973ea1e7cb1b"`
[INFO] running `"docker" "rm" "-f" "b53832f027f5bf3692dc0a29a6402a1247571c2f4d0489d6b2fe973ea1e7cb1b"`
[INFO] [stdout] b53832f027f5bf3692dc0a29a6402a1247571c2f4d0489d6b2fe973ea1e7cb1b