Aug 01 20:35:26.955 INFO checking test_double-0.1.1 against 1.27.2 for lazy_static-1
Aug 01 20:35:26.955 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:35:26.955 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 20:35:26.955 INFO running `"docker" "create" "-v" "/tmp/crater.9364l6v5Lu4D:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-4/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 20:35:27.107 INFO blam! 833c88233f35255766c663b3e0bd623755b0f51a7f3977b5fb877e85b919277a
Aug 01 20:35:27.110 INFO running `"docker" "start" "-a" "833c88233f35255766c663b3e0bd623755b0f51a7f3977b5fb877e85b919277a"`
Aug 01 20:35:28.578 INFO kablam!     Checking proc-macro2 v0.2.3
Aug 01 20:35:30.073 INFO kablam!     Checking quote v0.4.2
Aug 01 20:35:30.946 INFO kablam!     Checking syn v0.12.15
Aug 01 20:35:38.425 INFO kablam!     Checking test_double v0.1.1 (file:///source)
Aug 01 20:35:39.157 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:35:39.157 INFO kablam!  --> src/lib.rs:1:1
Aug 01 20:35:39.157 INFO kablam!   |
Aug 01 20:35:39.157 INFO kablam! 1 | #![feature(proc_macro)]
Aug 01 20:35:39.157 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:35:39.157 INFO kablam! 
Aug 01 20:35:39.157 INFO kablam! error: aborting due to previous error
Aug 01 20:35:39.157 INFO kablam! 
Aug 01 20:35:39.157 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:35:39.185 INFO kablam! error: Could not compile `test_double`.
Aug 01 20:35:39.186 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 20:35:39.225 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 20:35:39.225 INFO kablam!  --> src/lib.rs:1:1
Aug 01 20:35:39.225 INFO kablam!   |
Aug 01 20:35:39.225 INFO kablam! 1 | #![feature(proc_macro)]
Aug 01 20:35:39.225 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 20:35:39.225 INFO kablam! 
Aug 01 20:35:39.226 INFO kablam! error: aborting due to previous error
Aug 01 20:35:39.226 INFO kablam! 
Aug 01 20:35:39.226 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 20:35:39.240 INFO kablam! error: Could not compile `test_double`.
Aug 01 20:35:39.240 INFO kablam! 
Aug 01 20:35:39.240 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 20:35:39.246 INFO kablam! su: No module specific data is present
Aug 01 20:35:39.812 INFO running `"docker" "rm" "-f" "833c88233f35255766c663b3e0bd623755b0f51a7f3977b5fb877e85b919277a"`
Aug 01 20:35:39.951 INFO blam! 833c88233f35255766c663b3e0bd623755b0f51a7f3977b5fb877e85b919277a