Aug 30 13:55:32.840 INFO checking iota-lib-rs-0.0.26 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 13:55:32.840 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 13:55:32.840 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-3/try#2d477f9981361618ac78253c28051a66b6cea125:/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=500" "-e" "CMD=cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 13:55:33.006 INFO blam! 261b9e75482f75ef97fe31dc0874c385d129ae5d45a81558f9428dffefb2df72
Aug 30 13:55:33.008 INFO running `"docker" "start" "-a" "261b9e75482f75ef97fe31dc0874c385d129ae5d45a81558f9428dffefb2df72"`
Aug 30 13:55:34.019 INFO kablam!     Checking iota-lib-rs v0.0.26 (file:///source)
Aug 30 13:55:34.189 INFO kablam! warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
Aug 30 13:55:34.189 INFO kablam!  --> src/lib.rs:2:12
Aug 30 13:55:34.189 INFO kablam!   |
Aug 30 13:55:34.189 INFO kablam! 2 | #![feature(rust_2018_preview)]
Aug 30 13:55:34.189 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Aug 30 13:55:34.189 INFO kablam! 
Aug 30 13:55:34.202 INFO kablam! warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
Aug 30 13:55:34.202 INFO kablam!  --> src/lib.rs:2:12
Aug 30 13:55:34.202 INFO kablam!   |
Aug 30 13:55:34.202 INFO kablam! 2 | #![feature(rust_2018_preview)]
Aug 30 13:55:34.202 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Aug 30 13:55:34.202 INFO kablam! 
Aug 30 13:55:47.293 INFO kablam! warning: variable does not need to be mutable
Aug 30 13:55:47.293 INFO kablam!    --> src/crypto/iss.rs:415:17
Aug 30 13:55:47.293 INFO kablam!     |
Aug 30 13:55:47.293 INFO kablam! 415 |             let mut message_trits = converter::trits_from_string(MESSAGE);
Aug 30 13:55:47.293 INFO kablam!     |                 ----^^^^^^^^^^^^^
Aug 30 13:55:47.293 INFO kablam!     |                 |
Aug 30 13:55:47.293 INFO kablam!     |                 help: remove this `mut`
Aug 30 13:55:47.293 INFO kablam!     |
Aug 30 13:55:47.293 INFO kablam!     = note: #[warn(unused_mut)] on by default
Aug 30 13:55:47.293 INFO kablam! 
Aug 30 13:55:47.735 INFO kablam! error[E0635]: unknown feature `rust_2018_idioms`
Aug 30 13:55:47.735 INFO kablam!  --> src/lib.rs:3:12
Aug 30 13:55:47.735 INFO kablam!   |
Aug 30 13:55:47.735 INFO kablam! 3 | #![feature(rust_2018_idioms)]
Aug 30 13:55:47.735 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Aug 30 13:55:47.735 INFO kablam! 
Aug 30 13:55:47.947 INFO kablam! error: aborting due to previous error
Aug 30 13:55:47.947 INFO kablam! 
Aug 30 13:55:47.947 INFO kablam! Some errors occurred: E0635, E0705.
Aug 30 13:55:47.947 INFO kablam! For more information about an error, try `rustc --explain E0635`.
Aug 30 13:55:47.958 INFO kablam! error: Could not compile `iota-lib-rs`.
Aug 30 13:55:47.959 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 30 13:55:48.894 INFO kablam! error[E0635]: unknown feature `rust_2018_idioms`
Aug 30 13:55:48.894 INFO kablam!  --> src/lib.rs:3:12
Aug 30 13:55:48.894 INFO kablam!   |
Aug 30 13:55:48.894 INFO kablam! 3 | #![feature(rust_2018_idioms)]
Aug 30 13:55:48.894 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Aug 30 13:55:48.894 INFO kablam! 
Aug 30 13:55:49.086 INFO kablam! error: aborting due to previous error
Aug 30 13:55:49.086 INFO kablam! 
Aug 30 13:55:49.086 INFO kablam! Some errors occurred: E0635, E0705.
Aug 30 13:55:49.086 INFO kablam! For more information about an error, try `rustc --explain E0635`.
Aug 30 13:55:49.107 INFO kablam! error: Could not compile `iota-lib-rs`.
Aug 30 13:55:49.107 INFO kablam! 
Aug 30 13:55:49.107 INFO kablam! To learn more, run the command again with --verbose.
Aug 30 13:55:49.108 INFO kablam! su: No module specific data is present
Aug 30 13:55:49.538 INFO running `"docker" "rm" "-f" "261b9e75482f75ef97fe31dc0874c385d129ae5d45a81558f9428dffefb2df72"`
Aug 30 13:55:49.672 INFO blam! 261b9e75482f75ef97fe31dc0874c385d129ae5d45a81558f9428dffefb2df72