Aug 02 13:45:50.076 INFO checking buf-0.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 13:45:50.076 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:45:50.076 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:45:50.076 INFO running `"docker" "create" "-v" "/tmp/crater.w2KjJhPa20uW:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2+tmplazy:/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 02 13:45:50.388 INFO blam! 7bd4dc585b772c47166d7914bdabc4c6462c044c7f7d87d46929af8141de492d
Aug 02 13:45:50.398 INFO running `"docker" "start" "-a" "7bd4dc585b772c47166d7914bdabc4c6462c044c7f7d87d46929af8141de492d"`
Aug 02 13:45:52.081 INFO kablam!    Compiling hash-table v0.2.2
Aug 02 13:45:52.081 INFO kablam!     Checking slot v0.2.4
Aug 02 13:45:52.081 INFO kablam!    Compiling containers v0.8.3
Aug 02 13:45:52.083 INFO kablam!    Compiling i-o v0.4.1
Aug 02 13:45:52.085 INFO kablam!     Checking heap v0.1.0
Aug 02 13:45:52.087 INFO kablam!     Checking rel v0.2.0
Aug 02 13:45:52.089 INFO kablam!     Checking fallible v0.1.2
Aug 02 13:45:52.091 INFO kablam!    Compiling abort v0.1.1
Aug 02 13:45:52.476 INFO kablam!     Checking ptr v0.1.4
Aug 02 13:45:52.757 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:45:52.757 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/slot-0.2.4/src/lib.rs:3:1
Aug 02 13:45:52.757 INFO kablam!   |
Aug 02 13:45:52.757 INFO kablam! 3 | #![feature(const_fn)]
Aug 02 13:45:52.757 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:45:52.757 INFO kablam! 
Aug 02 13:45:52.757 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:45:52.757 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/slot-0.2.4/src/lib.rs:4:1
Aug 02 13:45:52.757 INFO kablam!   |
Aug 02 13:45:52.757 INFO kablam! 4 | #![feature(untagged_unions)]
Aug 02 13:45:52.757 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:45:52.757 INFO kablam! 
Aug 02 13:45:52.763 INFO kablam! error: aborting due to 2 previous errors
Aug 02 13:45:52.763 INFO kablam! 
Aug 02 13:45:52.763 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:45:52.763 INFO kablam! error: Could not compile `slot`.
Aug 02 13:45:52.763 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:45:53.180 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:45:53.180 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ptr-0.1.4/src/lib.rs:13:1
Aug 02 13:45:53.180 INFO kablam!    |
Aug 02 13:45:53.180 INFO kablam! 13 | #![feature(const_align_of)]
Aug 02 13:45:53.180 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:45:53.201 INFO kablam! 
Aug 02 13:45:53.201 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 13:45:53.201 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/ptr-0.1.4/src/lib.rs:14:1
Aug 02 13:45:53.201 INFO kablam!    |
Aug 02 13:45:53.201 INFO kablam! 14 | #![feature(const_fn)]
Aug 02 13:45:53.201 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^
Aug 02 13:45:53.201 INFO kablam! 
Aug 02 13:45:53.202 INFO kablam! error: aborting due to 2 previous errors
Aug 02 13:45:53.202 INFO kablam! 
Aug 02 13:45:53.202 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 13:45:53.210 INFO kablam! error: Could not compile `ptr`.
Aug 02 13:45:53.210 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 13:45:54.251 INFO kablam! error: build failed
Aug 02 13:45:54.253 INFO kablam! su: No module specific data is present
Aug 02 13:45:55.199 INFO running `"docker" "rm" "-f" "7bd4dc585b772c47166d7914bdabc4c6462c044c7f7d87d46929af8141de492d"`
Aug 02 13:45:55.302 INFO blam! 7bd4dc585b772c47166d7914bdabc4c6462c044c7f7d87d46929af8141de492d