Aug 30 21:23:39.410 INFO checking config-0.9.0 against try#2d477f9981361618ac78253c28051a66b6cea125 for pr-53707
Aug 30 21:23:39.410 INFO running: cargo +2d477f9981361618ac78253c28051a66b6cea125-alt check --frozen --all --all-targets
Aug 30 21:23:39.410 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53707/try#2d477f9981361618ac78253c28051a66b6cea125:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-1/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 21:23:39.623 INFO blam! 39bbe4db1fe0c8fbe0c4d59e37a9563ecd2cee39320bdc7b396d5dcab7d895e7
Aug 30 21:23:39.624 INFO running `"docker" "start" "-a" "39bbe4db1fe0c8fbe0c4d59e37a9563ecd2cee39320bdc7b396d5dcab7d895e7"`
Aug 30 21:23:40.457 INFO kablam!     Checking config v0.9.0 (file:///source)
Aug 30 21:23:57.923 INFO kablam! warning: variable does not need to be mutable
Aug 30 21:23:57.923 INFO kablam!   --> tests/env.rs:57:9
Aug 30 21:23:57.923 INFO kablam!    |
Aug 30 21:23:57.923 INFO kablam! 57 |     let mut environment = Environment::with_prefix("C").separator("_");
Aug 30 21:23:57.923 INFO kablam!    |         ----^^^^^^^^^^^
Aug 30 21:23:57.923 INFO kablam!    |         |
Aug 30 21:23:57.923 INFO kablam!    |         help: remove this `mut`
Aug 30 21:23:57.928 INFO kablam!    |
Aug 30 21:23:57.928 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 21:23:57.928 INFO kablam! 
Aug 30 21:24:05.077 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 24.71s
Aug 30 21:24:05.093 INFO kablam! su: No module specific data is present
Aug 30 21:24:05.902 INFO running `"docker" "rm" "-f" "39bbe4db1fe0c8fbe0c4d59e37a9563ecd2cee39320bdc7b396d5dcab7d895e7"`
Aug 30 21:24:05.979 INFO blam! 39bbe4db1fe0c8fbe0c4d59e37a9563ecd2cee39320bdc7b396d5dcab7d895e7