Sep 10 16:23:14.877 INFO checking iota-lib-rs-0.0.34 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 16:23:14.877 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 16:23:14.877 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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" "-e" "USER_ID=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 16:23:15.106 INFO blam! e0cd68038c080967127d1fab9d0538e99e4f3ae671762df6b257079b5c74351e
Sep 10 16:23:15.113 INFO running `"docker" "start" "-a" "e0cd68038c080967127d1fab9d0538e99e4f3ae671762df6b257079b5c74351e"`
Sep 10 16:23:16.521 INFO kablam! usermod: no changes
Sep 10 16:23:16.558 INFO kablam! warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Sep 10 16:23:16.827 INFO kablam!     Checking iota-lib-rs v0.0.34 (file:///source)
Sep 10 16:23:17.027 INFO kablam! warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
Sep 10 16:23:17.027 INFO kablam!   --> src/lib.rs:42:12
Sep 10 16:23:17.027 INFO kablam!    |
Sep 10 16:23:17.027 INFO kablam! 42 | #![feature(rust_2018_preview)]
Sep 10 16:23:17.027 INFO kablam!    |            ^^^^^^^^^^^^^^^^^
Sep 10 16:23:17.027 INFO kablam! 
Sep 10 16:23:17.068 INFO kablam! warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
Sep 10 16:23:17.068 INFO kablam!   --> src/lib.rs:42:12
Sep 10 16:23:17.068 INFO kablam!    |
Sep 10 16:23:17.068 INFO kablam! 42 | #![feature(rust_2018_preview)]
Sep 10 16:23:17.068 INFO kablam!    |            ^^^^^^^^^^^^^^^^^
Sep 10 16:23:17.068 INFO kablam! 
Sep 10 16:23:24.150 INFO kablam! error[E0635]: unknown feature `rust_2018_idioms`
Sep 10 16:23:24.150 INFO kablam!   --> src/lib.rs:43:12
Sep 10 16:23:24.150 INFO kablam!    |
Sep 10 16:23:24.150 INFO kablam! 43 | #![feature(rust_2018_idioms)]
Sep 10 16:23:24.150 INFO kablam!    |            ^^^^^^^^^^^^^^^^
Sep 10 16:23:24.150 INFO kablam! 
Sep 10 16:23:24.246 INFO kablam! error[E0635]: unknown feature `rust_2018_idioms`
Sep 10 16:23:24.246 INFO kablam!   --> src/lib.rs:43:12
Sep 10 16:23:24.246 INFO kablam!    |
Sep 10 16:23:24.246 INFO kablam! 43 | #![feature(rust_2018_idioms)]
Sep 10 16:23:24.246 INFO kablam!    |            ^^^^^^^^^^^^^^^^
Sep 10 16:23:24.246 INFO kablam! 
Sep 10 16:23:24.310 INFO kablam! error: aborting due to previous error
Sep 10 16:23:24.310 INFO kablam! 
Sep 10 16:23:24.310 INFO kablam! Some errors occurred: E0635, E0705.
Sep 10 16:23:24.310 INFO kablam! For more information about an error, try `rustc --explain E0635`.
Sep 10 16:23:24.326 INFO kablam! error: Could not compile `iota-lib-rs`.
Sep 10 16:23:24.326 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 16:23:24.375 INFO kablam! error: aborting due to previous error
Sep 10 16:23:24.375 INFO kablam! 
Sep 10 16:23:24.375 INFO kablam! Some errors occurred: E0635, E0705.
Sep 10 16:23:24.375 INFO kablam! For more information about an error, try `rustc --explain E0635`.
Sep 10 16:23:24.405 INFO kablam! error: Could not compile `iota-lib-rs`.
Sep 10 16:23:24.405 INFO kablam! 
Sep 10 16:23:24.405 INFO kablam! To learn more, run the command again with --verbose.
Sep 10 16:23:24.408 INFO kablam! su: No module specific data is present
Sep 10 16:23:25.127 INFO running `"docker" "rm" "-f" "e0cd68038c080967127d1fab9d0538e99e4f3ae671762df6b257079b5c74351e"`
Sep 10 16:23:25.232 INFO blam! e0cd68038c080967127d1fab9d0538e99e4f3ae671762df6b257079b5c74351e