Sep 14 19:24:03.316 INFO checking backoff-0.1.2 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 19:24:03.316 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 19:24:03.316 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 19:24:03.676 INFO blam! 3f27ef98e715ee596468c98e47db7a184fef340abfacb83bf6cfb82698e069fb
Sep 14 19:24:03.678 INFO running `"docker" "start" "-a" "3f27ef98e715ee596468c98e47db7a184fef340abfacb83bf6cfb82698e069fb"`
Sep 14 19:24:05.074 INFO kablam! usermod: no changes
Sep 14 19:24:05.242 INFO kablam!     Checking backoff v0.1.2 (file:///source)
Sep 14 19:24:06.331 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 14 19:24:06.331 INFO kablam!   --> examples/permanent_error.rs:10:9
Sep 14 19:24:06.331 INFO kablam!    |
Sep 14 19:24:06.331 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Sep 14 19:24:06.331 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 14 19:24:06.331 INFO kablam!    |
Sep 14 19:24:06.331 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 14 19:24:06.331 INFO kablam! 
Sep 14 19:24:10.330 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.22s
Sep 14 19:24:10.339 INFO kablam! su: No module specific data is present
Sep 14 19:24:11.154 INFO running `"docker" "rm" "-f" "3f27ef98e715ee596468c98e47db7a184fef340abfacb83bf6cfb82698e069fb"`
Sep 14 19:24:11.479 INFO blam! 3f27ef98e715ee596468c98e47db7a184fef340abfacb83bf6cfb82698e069fb