Dec 19 09:27:42.507 INFO checking sampullman/rust-scheme against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:27:42.507 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/sampullman/rust-scheme:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:27:43.012 INFO [stdout] 1dbb8542bf14bed8053ded8703c42e1ecd51a03057bd53fb3cd0bddd9e95d121
Dec 19 09:27:43.014 INFO running `"docker" "start" "-a" "1dbb8542bf14bed8053ded8703c42e1ecd51a03057bd53fb3cd0bddd9e95d121"`
Dec 19 09:27:45.221 INFO [stderr]     Checking rust-scheme v0.1.0 (/opt/crater/workdir)
Dec 19 09:27:45.878 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:27:45.878 INFO [stderr]   --> src/parse.rs:29:14
Dec 19 09:27:45.878 INFO [stderr]    |
Dec 19 09:27:45.879 INFO [stderr] 29 | fn read_list(mut tokens: &mut Vec<String>) -> Result<Vec<Atom>, String> {
Dec 19 09:27:45.879 INFO [stderr]    |              ----^^^^^^
Dec 19 09:27:45.879 INFO [stderr]    |              |
Dec 19 09:27:45.880 INFO [stderr]    |              help: remove this `mut`
Dec 19 09:27:45.880 INFO [stderr]    |
Dec 19 09:27:45.880 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 09:27:45.881 INFO [stderr] 
Dec 19 09:27:45.881 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:27:45.881 INFO [stderr]   --> src/parse.rs:43:25
Dec 19 09:27:45.881 INFO [stderr]    |
Dec 19 09:27:45.882 INFO [stderr] 43 | pub fn read_from_tokens(mut tokens: &mut Vec<String>) -> Result<Atom, String> {
Dec 19 09:27:45.882 INFO [stderr]    |                         ----^^^^^^
Dec 19 09:27:45.882 INFO [stderr]    |                         |
Dec 19 09:27:45.883 INFO [stderr]    |                         help: remove this `mut`
Dec 19 09:27:45.883 INFO [stderr] 
Dec 19 09:27:45.936 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:27:45.936 INFO [stderr]   --> src/parse.rs:29:14
Dec 19 09:27:45.937 INFO [stderr]    |
Dec 19 09:27:45.937 INFO [stderr] 29 | fn read_list(mut tokens: &mut Vec<String>) -> Result<Vec<Atom>, String> {
Dec 19 09:27:45.937 INFO [stderr]    |              ----^^^^^^
Dec 19 09:27:45.937 INFO [stderr]    |              |
Dec 19 09:27:45.937 INFO [stderr]    |              help: remove this `mut`
Dec 19 09:27:45.937 INFO [stderr]    |
Dec 19 09:27:45.937 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 09:27:45.937 INFO [stderr] 
Dec 19 09:27:45.952 INFO [stderr] warning: variable does not need to be mutable
Dec 19 09:27:45.952 INFO [stderr]   --> src/parse.rs:43:25
Dec 19 09:27:45.953 INFO [stderr]    |
Dec 19 09:27:45.953 INFO [stderr] 43 | pub fn read_from_tokens(mut tokens: &mut Vec<String>) -> Result<Atom, String> {
Dec 19 09:27:45.953 INFO [stderr]    |                         ----^^^^^^
Dec 19 09:27:45.953 INFO [stderr]    |                         |
Dec 19 09:27:45.953 INFO [stderr]    |                         help: remove this `mut`
Dec 19 09:27:45.953 INFO [stderr] 
Dec 19 09:27:46.589 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
Dec 19 09:27:48.047 INFO running `"docker" "inspect" "1dbb8542bf14bed8053ded8703c42e1ecd51a03057bd53fb3cd0bddd9e95d121"`
Dec 19 09:27:48.378 INFO running `"docker" "rm" "-f" "1dbb8542bf14bed8053ded8703c42e1ecd51a03057bd53fb3cd0bddd9e95d121"`
Dec 19 09:27:48.708 INFO [stdout] 1dbb8542bf14bed8053ded8703c42e1ecd51a03057bd53fb3cd0bddd9e95d121