Dec 05 13:43:25.600 INFO checking follow-0.1.5 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 13:43:25.601 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:43:25.949 INFO [stdout] 143ac4f4762b6013c38bf40244829010a8987942c7e995c2deabe099b5949a76
Dec 05 13:43:25.953 INFO running `"docker" "start" "-a" "143ac4f4762b6013c38bf40244829010a8987942c7e995c2deabe099b5949a76"`
Dec 05 13:43:27.091 INFO [stderr] usermod: no changes
Dec 05 13:43:27.217 INFO [stderr]     Checking fern v0.3.5
Dec 05 13:43:28.099 INFO [stderr]     Checking follow v0.1.5 (/source)
Dec 05 13:43:32.610 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 05 13:43:32.611 INFO [stderr]    --> src/worker.rs:180:27
Dec 05 13:43:32.611 INFO [stderr]     |
Dec 05 13:43:32.611 INFO [stderr] 180 |                 return Ok((cursor..len));
Dec 05 13:43:32.611 INFO [stderr]     |                           ^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 13:43:32.611 INFO [stderr]     |
Dec 05 13:43:32.611 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 13:43:32.611 INFO [stderr] 
Dec 05 13:43:32.611 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 05 13:43:32.611 INFO [stderr]    --> src/worker.rs:189:27
Dec 05 13:43:32.611 INFO [stderr]     |
Dec 05 13:43:32.611 INFO [stderr] 189 |                 return Ok((0..len));
Dec 05 13:43:32.611 INFO [stderr]     |                           ^^^^^^^^ help: remove these parentheses
Dec 05 13:43:32.611 INFO [stderr] 
Dec 05 13:43:32.611 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 05 13:43:32.611 INFO [stderr]    --> src/worker.rs:658:46
Dec 05 13:43:32.611 INFO [stderr]     |
Dec 05 13:43:32.611 INFO [stderr] 658 |             let content = build_sized_string((((BUFFER_SIZE as usize) * 2) - 1));
Dec 05 13:43:32.611 INFO [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 13:43:32.611 INFO [stderr] 
Dec 05 13:43:32.791 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 05 13:43:32.791 INFO [stderr]    --> src/worker.rs:180:27
Dec 05 13:43:32.791 INFO [stderr]     |
Dec 05 13:43:32.791 INFO [stderr] 180 |                 return Ok((cursor..len));
Dec 05 13:43:32.791 INFO [stderr]     |                           ^^^^^^^^^^^^^ help: remove these parentheses
Dec 05 13:43:32.791 INFO [stderr]     |
Dec 05 13:43:32.791 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 05 13:43:32.791 INFO [stderr] 
Dec 05 13:43:32.791 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 05 13:43:32.791 INFO [stderr]    --> src/worker.rs:189:27
Dec 05 13:43:32.791 INFO [stderr]     |
Dec 05 13:43:32.791 INFO [stderr] 189 |                 return Ok((0..len));
Dec 05 13:43:32.791 INFO [stderr]     |                           ^^^^^^^^ help: remove these parentheses
Dec 05 13:43:32.791 INFO [stderr] 
Dec 05 13:43:33.131 INFO [stderr] warning: method is never used: `is_verbose`
Dec 05 13:43:33.131 INFO [stderr]   --> src/args.rs:32:5
Dec 05 13:43:33.131 INFO [stderr]    |
Dec 05 13:43:33.131 INFO [stderr] 32 |     pub fn is_verbose(&self) -> bool {
Dec 05 13:43:33.131 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:43:33.135 INFO [stderr]    |
Dec 05 13:43:33.139 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 13:43:33.139 INFO [stderr] 
Dec 05 13:43:33.228 INFO [stderr] warning: method is never used: `is_verbose`
Dec 05 13:43:33.228 INFO [stderr]   --> src/args.rs:32:5
Dec 05 13:43:33.228 INFO [stderr]    |
Dec 05 13:43:33.228 INFO [stderr] 32 |     pub fn is_verbose(&self) -> bool {
Dec 05 13:43:33.228 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 13:43:33.228 INFO [stderr]    |
Dec 05 13:43:33.228 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 13:43:33.228 INFO [stderr] 
Dec 05 13:43:33.283 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.17s
Dec 05 13:43:33.283 INFO [stderr] su: No module specific data is present
Dec 05 13:43:33.907 INFO running `"docker" "inspect" "143ac4f4762b6013c38bf40244829010a8987942c7e995c2deabe099b5949a76"`
Dec 05 13:43:34.207 INFO running `"docker" "rm" "-f" "143ac4f4762b6013c38bf40244829010a8987942c7e995c2deabe099b5949a76"`
Dec 05 13:43:34.535 INFO [stdout] 143ac4f4762b6013c38bf40244829010a8987942c7e995c2deabe099b5949a76