Aug 30 21:23:39.548 INFO checking config-0.9.0 against master#ede55518431154bc761f7b2438cce9078c162700 for pr-53707
Aug 30 21:23:39.548 INFO running: cargo +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets
Aug 30 21:23:39.548 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53707/master#ede55518431154bc761f7b2438cce9078c162700:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-0/master#ede55518431154bc761f7b2438cce9078c162700:/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 +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 21:23:39.678 INFO blam! ff8d5f47df89b5d8b95958400fd887a004eb082371a9bcda7b648a0c818358c1
Aug 30 21:23:39.679 INFO running `"docker" "start" "-a" "ff8d5f47df89b5d8b95958400fd887a004eb082371a9bcda7b648a0c818358c1"`
Aug 30 21:23:40.421 INFO kablam!     Checking config v0.9.0 (file:///source)
Aug 30 21:23:57.113 INFO kablam! warning: variable does not need to be mutable
Aug 30 21:23:57.113 INFO kablam!   --> tests/env.rs:57:9
Aug 30 21:23:57.113 INFO kablam!    |
Aug 30 21:23:57.113 INFO kablam! 57 |     let mut environment = Environment::with_prefix("C").separator("_");
Aug 30 21:23:57.114 INFO kablam!    |         ----^^^^^^^^^^^
Aug 30 21:23:57.114 INFO kablam!    |         |
Aug 30 21:23:57.114 INFO kablam!    |         help: remove this `mut`
Aug 30 21:23:57.114 INFO kablam!    |
Aug 30 21:23:57.114 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 21:23:57.114 INFO kablam! 
Aug 30 21:24:05.286 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 24.95s
Aug 30 21:24:05.298 INFO kablam! su: No module specific data is present
Aug 30 21:24:06.117 INFO running `"docker" "rm" "-f" "ff8d5f47df89b5d8b95958400fd887a004eb082371a9bcda7b648a0c818358c1"`
Aug 30 21:24:06.224 INFO blam! ff8d5f47df89b5d8b95958400fd887a004eb082371a9bcda7b648a0c818358c1