Aug 01 13:56:38.336 INFO checking zyvitski/envelope-rs against 1.27.2 for lazy_static-1
Aug 01 13:56:38.336 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 13:56:38.336 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 13:56:38.336 INFO running `"docker" "create" "-v" "/tmp/crater.8ZTopz0CdXdu:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 13:56:38.498 INFO blam! 7fbbe09f965814f174f3eac38452b76b8c2022cdad7bbdb1f06d4b3f58b6af26
Aug 01 13:56:38.499 INFO running `"docker" "start" "-a" "7fbbe09f965814f174f3eac38452b76b8c2022cdad7bbdb1f06d4b3f58b6af26"`
Aug 01 13:56:40.478 INFO kablam!    Compiling num-traits v0.2.5
Aug 01 13:56:40.479 INFO kablam!    Compiling num-integer v0.1.39
Aug 01 13:56:40.479 INFO kablam!    Compiling num-bigint v0.2.0
Aug 01 13:56:40.479 INFO kablam!    Compiling num-complex v0.2.0
Aug 01 13:56:40.480 INFO kablam!    Compiling num-rational v0.2.1
Aug 01 13:56:40.480 INFO kablam!    Compiling num-iter v0.1.37
Aug 01 13:57:01.498 INFO kablam!     Checking num v0.2.0
Aug 01 13:57:01.690 INFO kablam!     Checking envelope v0.1.0 (file:///source)
Aug 01 13:57:02.166 INFO kablam! warning: missing documentation for crate
Aug 01 13:57:02.166 INFO kablam!   --> src/lib.rs:1:1
Aug 01 13:57:02.166 INFO kablam!    |
Aug 01 13:57:02.166 INFO kablam! 1  | / #![warn(missing_docs)]
Aug 01 13:57:02.166 INFO kablam! 2  | |
Aug 01 13:57:02.166 INFO kablam! 3  | | ///!A crate for representing type generic Envelope generators.
Aug 01 13:57:02.166 INFO kablam! 4  | |
Aug 01 13:57:02.166 INFO kablam! ...  |
Aug 01 13:57:02.166 INFO kablam! 10 | | pub use adsr::*;
Aug 01 13:57:02.166 INFO kablam! 11 | | pub use util::*;
Aug 01 13:57:02.166 INFO kablam!    | |________________^
Aug 01 13:57:02.166 INFO kablam!    |
Aug 01 13:57:02.166 INFO kablam! note: lint level defined here
Aug 01 13:57:02.166 INFO kablam!   --> src/lib.rs:1:9
Aug 01 13:57:02.167 INFO kablam!    |
Aug 01 13:57:02.167 INFO kablam! 1  | #![warn(missing_docs)]
Aug 01 13:57:02.167 INFO kablam!    |         ^^^^^^^^^^^^
Aug 01 13:57:02.167 INFO kablam! 
Aug 01 13:57:02.538 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 13:57:02.538 INFO kablam!  --> benches/benches.rs:1:1
Aug 01 13:57:02.538 INFO kablam!   |
Aug 01 13:57:02.538 INFO kablam! 1 | #![feature(test)]
Aug 01 13:57:02.538 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 13:57:02.538 INFO kablam! 
Aug 01 13:57:02.539 INFO kablam! error: aborting due to previous error
Aug 01 13:57:02.539 INFO kablam! 
Aug 01 13:57:02.539 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 13:57:02.546 INFO kablam! error: Could not compile `envelope`.
Aug 01 13:57:02.546 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 13:57:02.640 INFO kablam! error: build failed
Aug 01 13:57:02.641 INFO kablam! su: No module specific data is present
Aug 01 13:57:03.280 INFO running `"docker" "rm" "-f" "7fbbe09f965814f174f3eac38452b76b8c2022cdad7bbdb1f06d4b3f58b6af26"`
Aug 01 13:57:03.483 INFO blam! 7fbbe09f965814f174f3eac38452b76b8c2022cdad7bbdb1f06d4b3f58b6af26