[INFO] crate nvptx-builtins 0.1.0 is already in cache
[INFO] extracting crate nvptx-builtins 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/nvptx-builtins/0.1.0
[INFO] extracting crate nvptx-builtins 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/nvptx-builtins/0.1.0
[INFO] validating manifest of nvptx-builtins-0.1.0 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 nvptx-builtins-0.1.0 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 nvptx-builtins-0.1.0
[INFO] finished frobbing nvptx-builtins-0.1.0
[INFO] frobbed toml for nvptx-builtins-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/nvptx-builtins/0.1.0/Cargo.toml
[INFO] started frobbing nvptx-builtins-0.1.0
[INFO] finished frobbing nvptx-builtins-0.1.0
[INFO] frobbed toml for nvptx-builtins-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/nvptx-builtins/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nvptx-builtins-0.1.0 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/nvptx-builtins/0.1.0:/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] 9f408d813c9f8f0a4837958df312a640840a452636d79ca7f690e19b679cb37f
[INFO] running `"docker" "start" "-a" "9f408d813c9f8f0a4837958df312a640840a452636d79ca7f690e19b679cb37f"`
[INFO] [stderr]    Compiling nvptx-builtins v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![feature(platform_intrinsics)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_block_dim_x`
[INFO] [stderr]  --> src/intrinsics.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn nvptx_block_dim_x() -> i32;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_block_dim_y`
[INFO] [stderr]  --> src/intrinsics.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn nvptx_block_dim_y() -> i32;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_block_dim_z`
[INFO] [stderr]   --> src/intrinsics.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn nvptx_block_dim_z() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_block_idx_x`
[INFO] [stderr]   --> src/intrinsics.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn nvptx_block_idx_x() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_block_idx_y`
[INFO] [stderr]   --> src/intrinsics.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn nvptx_block_idx_y() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_block_idx_z`
[INFO] [stderr]   --> src/intrinsics.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn nvptx_block_idx_z() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_grid_dim_x`
[INFO] [stderr]   --> src/intrinsics.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn nvptx_grid_dim_x() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_grid_dim_y`
[INFO] [stderr]   --> src/intrinsics.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn nvptx_grid_dim_y() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_grid_dim_z`
[INFO] [stderr]   --> src/intrinsics.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn nvptx_grid_dim_z() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_syncthreads`
[INFO] [stderr]   --> src/intrinsics.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn nvptx_syncthreads() -> ();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_thread_idx_x`
[INFO] [stderr]   --> src/intrinsics.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn nvptx_thread_idx_x() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_thread_idx_y`
[INFO] [stderr]   --> src/intrinsics.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn nvptx_thread_idx_y() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: unrecognized platform-specific intrinsic function: `nvptx_thread_idx_z`
[INFO] [stderr]   --> src/intrinsics.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn nvptx_thread_idx_z() -> i32;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 14 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `nvptx-builtins`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9f408d813c9f8f0a4837958df312a640840a452636d79ca7f690e19b679cb37f"`
[INFO] running `"docker" "rm" "-f" "9f408d813c9f8f0a4837958df312a640840a452636d79ca7f690e19b679cb37f"`
[INFO] [stdout] 9f408d813c9f8f0a4837958df312a640840a452636d79ca7f690e19b679cb37f