Dec 04 10:51:01.109 INFO checking sampullman/rust-scheme against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 10:51:01.109 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 10:51:01.639 INFO [stdout] 9db85f342469e5a02156f08a40f2da57312522f8404b106abd6f07cb1cbc6cdd
Dec 04 10:51:01.641 INFO running `"docker" "start" "-a" "9db85f342469e5a02156f08a40f2da57312522f8404b106abd6f07cb1cbc6cdd"`
Dec 04 10:51:03.471 INFO [stderr] usermod: no changes
Dec 04 10:51:03.527 INFO [stderr]     Checking rust-scheme v0.1.0 (/source)
Dec 04 10:51:04.155 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:51:04.155 INFO [stderr]   --> src/parse.rs:29:14
Dec 04 10:51:04.155 INFO [stderr]    |
Dec 04 10:51:04.155 INFO [stderr] 29 | fn read_list(mut tokens: &mut Vec<String>) -> Result<Vec<Atom>, String> {
Dec 04 10:51:04.155 INFO [stderr]    |              ----^^^^^^
Dec 04 10:51:04.155 INFO [stderr]    |              |
Dec 04 10:51:04.155 INFO [stderr]    |              help: remove this `mut`
Dec 04 10:51:04.155 INFO [stderr]    |
Dec 04 10:51:04.155 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 10:51:04.155 INFO [stderr] 
Dec 04 10:51:04.155 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:51:04.155 INFO [stderr]   --> src/parse.rs:43:25
Dec 04 10:51:04.155 INFO [stderr]    |
Dec 04 10:51:04.155 INFO [stderr] 43 | pub fn read_from_tokens(mut tokens: &mut Vec<String>) -> Result<Atom, String> {
Dec 04 10:51:04.155 INFO [stderr]    |                         ----^^^^^^
Dec 04 10:51:04.155 INFO [stderr]    |                         |
Dec 04 10:51:04.155 INFO [stderr]    |                         help: remove this `mut`
Dec 04 10:51:04.155 INFO [stderr] 
Dec 04 10:51:04.459 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:51:04.459 INFO [stderr]   --> src/parse.rs:29:14
Dec 04 10:51:04.459 INFO [stderr]    |
Dec 04 10:51:04.459 INFO [stderr] 29 | fn read_list(mut tokens: &mut Vec<String>) -> Result<Vec<Atom>, String> {
Dec 04 10:51:04.459 INFO [stderr]    |              ----^^^^^^
Dec 04 10:51:04.459 INFO [stderr]    |              |
Dec 04 10:51:04.459 INFO [stderr]    |              help: remove this `mut`
Dec 04 10:51:04.459 INFO [stderr]    |
Dec 04 10:51:04.459 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 10:51:04.459 INFO [stderr] 
Dec 04 10:51:04.459 INFO [stderr] warning: variable does not need to be mutable
Dec 04 10:51:04.459 INFO [stderr]   --> src/parse.rs:43:25
Dec 04 10:51:04.459 INFO [stderr]    |
Dec 04 10:51:04.459 INFO [stderr] 43 | pub fn read_from_tokens(mut tokens: &mut Vec<String>) -> Result<Atom, String> {
Dec 04 10:51:04.459 INFO [stderr]    |                         ----^^^^^^
Dec 04 10:51:04.459 INFO [stderr]    |                         |
Dec 04 10:51:04.459 INFO [stderr]    |                         help: remove this `mut`
Dec 04 10:51:04.459 INFO [stderr] 
Dec 04 10:51:05.494 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
Dec 04 10:51:05.496 INFO [stderr] su: No module specific data is present
Dec 04 10:51:07.364 INFO running `"docker" "inspect" "9db85f342469e5a02156f08a40f2da57312522f8404b106abd6f07cb1cbc6cdd"`
Dec 04 10:51:07.585 INFO running `"docker" "rm" "-f" "9db85f342469e5a02156f08a40f2da57312522f8404b106abd6f07cb1cbc6cdd"`
Dec 04 10:51:07.935 INFO [stdout] 9db85f342469e5a02156f08a40f2da57312522f8404b106abd6f07cb1cbc6cdd