Sep 10 20:34:45.470 INFO checking currency-0.4.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 20:34:45.470 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 20:34:45.470 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-2/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 20:34:45.656 INFO blam! 49b8c2b1f02528188edd427d682e6a0aefb342a8678bf70399649c7329395f7c
Sep 10 20:34:45.658 INFO running `"docker" "start" "-a" "49b8c2b1f02528188edd427d682e6a0aefb342a8678bf70399649c7329395f7c"`
Sep 10 20:34:46.543 INFO kablam! usermod: no changes
Sep 10 20:34:46.595 INFO kablam!     Checking currency v0.4.0 (file:///source)
Sep 10 20:34:47.674 INFO kablam! warning: unused import: `std::str::FromStr`
Sep 10 20:34:47.674 INFO kablam!    --> src/lib.rs:752:13
Sep 10 20:34:47.674 INFO kablam!     |
Sep 10 20:34:47.674 INFO kablam! 752 |         use std::str::FromStr;
Sep 10 20:34:47.674 INFO kablam!     |             ^^^^^^^^^^^^^^^^^
Sep 10 20:34:47.674 INFO kablam!     |
Sep 10 20:34:47.674 INFO kablam!     = note: #[warn(unused_imports)] on by default
Sep 10 20:34:47.674 INFO kablam! 
Sep 10 20:34:47.887 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
Sep 10 20:34:47.893 INFO kablam! su: No module specific data is present
Sep 10 20:34:48.716 INFO running `"docker" "rm" "-f" "49b8c2b1f02528188edd427d682e6a0aefb342a8678bf70399649c7329395f7c"`
Sep 10 20:34:48.823 INFO blam! 49b8c2b1f02528188edd427d682e6a0aefb342a8678bf70399649c7329395f7c