Sep 04 23:54:20.041 INFO checking config-0.9.0 against master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8 for pr-53913
Sep 04 23:54:20.041 INFO running: cargo +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets
Sep 04 23:54:20.041 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53913/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53913/worker-2/master#2687112ea6a8701cbf36e6dd4d77d64694cf93d8:/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 +2687112ea6a8701cbf36e6dd4d77d64694cf93d8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 23:54:20.358 INFO blam! bae8c15b930fd3890021b0c872a2aa93812dda1c2222df948ee8fa48602b9a8c
Sep 04 23:54:20.360 INFO running `"docker" "start" "-a" "bae8c15b930fd3890021b0c872a2aa93812dda1c2222df948ee8fa48602b9a8c"`
Sep 04 23:54:21.385 INFO kablam!     Checking config v0.9.0 (file:///source)
Sep 04 23:54:44.864 INFO kablam! warning: variable does not need to be mutable
Sep 04 23:54:44.864 INFO kablam!   --> tests/env.rs:57:9
Sep 04 23:54:44.864 INFO kablam!    |
Sep 04 23:54:44.864 INFO kablam! 57 |     let mut environment = Environment::with_prefix("C").separator("_");
Sep 04 23:54:44.864 INFO kablam!    |         ----^^^^^^^^^^^
Sep 04 23:54:44.864 INFO kablam!    |         |
Sep 04 23:54:44.864 INFO kablam!    |         help: remove this `mut`
Sep 04 23:54:44.864 INFO kablam!    |
Sep 04 23:54:44.864 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 04 23:54:44.864 INFO kablam! 
Sep 04 23:54:45.445 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 24.16s
Sep 04 23:54:45.467 INFO kablam! su: No module specific data is present
Sep 04 23:54:45.951 INFO running `"docker" "rm" "-f" "bae8c15b930fd3890021b0c872a2aa93812dda1c2222df948ee8fa48602b9a8c"`
Sep 04 23:54:46.044 INFO blam! bae8c15b930fd3890021b0c872a2aa93812dda1c2222df948ee8fa48602b9a8c