[INFO] updating cached repository aleksanb/fourkay
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aleksanb/fourkay
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aleksanb/fourkay" "work/ex/beta-1.38-1/sources/1.37.0/gh/aleksanb/fourkay"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/aleksanb/fourkay'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aleksanb/fourkay" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aleksanb/fourkay"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aleksanb/fourkay'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 01853f4769381c34be45a3a9be8bd480359e6cc1
[INFO] sha for GitHub repo aleksanb/fourkay: 01853f4769381c34be45a3a9be8bd480359e6cc1
[INFO] validating manifest of aleksanb/fourkay on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of aleksanb/fourkay on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing aleksanb/fourkay
[INFO] finished frobbing aleksanb/fourkay
[INFO] frobbed toml for aleksanb/fourkay written to work/ex/beta-1.38-1/sources/1.37.0/gh/aleksanb/fourkay/Cargo.toml
[INFO] started frobbing aleksanb/fourkay
[INFO] finished frobbing aleksanb/fourkay
[INFO] frobbed toml for aleksanb/fourkay written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/aleksanb/fourkay/Cargo.toml
[INFO] crate aleksanb/fourkay already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing aleksanb/fourkay against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/aleksanb/fourkay:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 93c014852c6224b2fa229f9a05de3fca42a379582d6199f97811bc0cb787b3bd
[INFO] running `"docker" "start" "-a" "93c014852c6224b2fa229f9a05de3fca42a379582d6199f97811bc0cb787b3bd"`
[INFO] [stderr] warning: unused manifest key: profile.debug
[INFO] [stderr] warning: use `[profile.dev]` to configure debug builds
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling fourkay v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(lang_items, start)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::$gl_symbol::function as $gl_symbol`
[INFO] [stderr]   --> src/shitty/gl_wrapper.rs:30:24
[INFO] [stderr]    |
[INFO] [stderr] 30 |           pub(crate) use self::$gl_symbol::function as $gl_symbol;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 43 | / gl_function! {
[INFO] [stderr] 44 | |     fn glGetString(name: GLenum) -> *const GLubyte,
[INFO] [stderr] 45 | |     fn glShaderSource(
[INFO] [stderr] 46 | |         shader: GLuint,
[INFO] [stderr] ...  |
[INFO] [stderr] 94 | |     fn glUniform4f(location: GLint, v0: GLfloat, v1: GLfloat, v2: GLfloat, v3: GLfloat) -> ()
[INFO] [stderr] 95 | | }
[INFO] [stderr]    | |_- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::mem`
[INFO] [stderr]   --> src/shitty/mod.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     use core::mem;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `gl_utils`
[INFO] [stderr]  --> src/main.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | use self::shitty::{gl_utils, gl_wrapper, println::*};
[INFO] [stderr]   |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Xlib_constants`, `Xlib`, `glx`
[INFO] [stderr]  --> src/programs/quad.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::bindings::{gl, glx, Xlib, Xlib_constants};
[INFO] [stderr]   |                           ^^^  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::panic::PanicInfo`
[INFO] [stderr]  --> src/programs/quad.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use core::panic::PanicInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::ptr`
[INFO] [stderr]  --> src/programs/quad.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use core::ptr;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Xlib_constants`, `Xlib`, `glx`
[INFO] [stderr]  --> src/programs/raymarcher.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::bindings::{gl, glx, Xlib, Xlib_constants};
[INFO] [stderr]   |                           ^^^  ^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::panic::PanicInfo`
[INFO] [stderr]  --> src/programs/raymarcher.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use core::panic::PanicInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::ptr`
[INFO] [stderr]  --> src/programs/raymarcher.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use core::ptr;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::bindings::Xlib::Atom`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | use crate::bindings::Xlib::Atom;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::shitty::xlib_events_ready`
[INFO] [stderr]   --> src/main.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 | use crate::shitty::xlib_events_ready;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `null_mut`, `null`
[INFO] [stderr]   --> src/main.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 | use core::ptr::{null, null_mut};
[INFO] [stderr]    |                 ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `fourkay`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "93c014852c6224b2fa229f9a05de3fca42a379582d6199f97811bc0cb787b3bd"`
[INFO] running `"docker" "rm" "-f" "93c014852c6224b2fa229f9a05de3fca42a379582d6199f97811bc0cb787b3bd"`
[INFO] [stdout] 93c014852c6224b2fa229f9a05de3fca42a379582d6199f97811bc0cb787b3bd