Sep 20 06:17:26.146 INFO checking backoff-0.1.2 against try#135b4cd023a753409d01e43b0f23d22a899feeeb for pr-54352
Sep 20 06:17:26.146 INFO running: cargo +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets
Sep 20 06:17:26.146 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54352/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-1/try#135b4cd023a753409d01e43b0f23d22a899feeeb:/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 +135b4cd023a753409d01e43b0f23d22a899feeeb-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 06:17:26.336 INFO blam! 5f53cdb2c6aadd5f254c9935834ca1594c382a3a072189a1af2425c0a8bbed9a
Sep 20 06:17:26.338 INFO running `"docker" "start" "-a" "5f53cdb2c6aadd5f254c9935834ca1594c382a3a072189a1af2425c0a8bbed9a"`
Sep 20 06:17:27.533 INFO kablam! usermod: no changes
Sep 20 06:17:27.740 INFO kablam!     Checking backoff v0.1.2 (/source)
Sep 20 06:17:28.942 INFO kablam! warning: unknown lint: `needless_pass_by_value`
Sep 20 06:17:28.942 INFO kablam!   --> examples/permanent_error.rs:10:9
Sep 20 06:17:28.942 INFO kablam!    |
Sep 20 06:17:28.942 INFO kablam! 10 | #[allow(needless_pass_by_value)]
Sep 20 06:17:28.942 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^
Sep 20 06:17:28.958 INFO kablam!    |
Sep 20 06:17:28.958 INFO kablam!    = note: #[warn(unknown_lints)] on by default
Sep 20 06:17:28.958 INFO kablam! 
Sep 20 06:17:32.242 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.68s
Sep 20 06:17:32.252 INFO kablam! su: No module specific data is present
Sep 20 06:17:33.351 INFO running `"docker" "rm" "-f" "5f53cdb2c6aadd5f254c9935834ca1594c382a3a072189a1af2425c0a8bbed9a"`
Sep 20 06:17:33.479 INFO blam! 5f53cdb2c6aadd5f254c9935834ca1594c382a3a072189a1af2425c0a8bbed9a