Sep 20 03:43:39.681 INFO checking circular-0.2.0 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 20 03:43:39.681 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 20 03:43:39.681 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-2/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 03:43:39.886 INFO blam! c9e58f06a408cbc4fff6516351dcc59a4009317c418add83fdb11996a4d12b8d
Sep 20 03:43:39.888 INFO running `"docker" "start" "-a" "c9e58f06a408cbc4fff6516351dcc59a4009317c418add83fdb11996a4d12b8d"`
Sep 20 03:43:41.171 INFO kablam! usermod: no changes
Sep 20 03:43:41.200 INFO kablam!     Checking circular v0.2.0 (/source)
Sep 20 03:43:41.674 INFO kablam! warning: unused import: `std::str`
Sep 20 03:43:41.675 INFO kablam!    --> src/lib.rs:387:7
Sep 20 03:43:41.675 INFO kablam!     |
Sep 20 03:43:41.675 INFO kablam! 387 |   use std::str;
Sep 20 03:43:41.675 INFO kablam!     |       ^^^^^^^^
Sep 20 03:43:41.675 INFO kablam!     |
Sep 20 03:43:41.675 INFO kablam!     = note: #[warn(unused_imports)] on by default
Sep 20 03:43:41.675 INFO kablam! 
Sep 20 03:43:42.076 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
Sep 20 03:43:42.078 INFO kablam! su: No module specific data is present
Sep 20 03:43:42.829 INFO running `"docker" "rm" "-f" "c9e58f06a408cbc4fff6516351dcc59a4009317c418add83fdb11996a4d12b8d"`
Sep 20 03:43:43.044 INFO blam! c9e58f06a408cbc4fff6516351dcc59a4009317c418add83fdb11996a4d12b8d