Nov 30 11:12:01.202 INFO checking Ermain-12/Introduction-to-Rust against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 11:12:01.202 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-2/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 11:12:01.670 INFO [stdout] fd7012106b82d566fa9dffea6148dd10411400606ca7caa14594488a3056630b
Nov 30 11:12:01.680 INFO running `"docker" "start" "-a" "fd7012106b82d566fa9dffea6148dd10411400606ca7caa14594488a3056630b"`
Nov 30 11:12:02.780 INFO [stderr] usermod: no changes
Nov 30 11:12:02.888 INFO [stderr]     Checking hello_world v0.1.0 (/source)
Nov 30 11:12:04.432 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:12:04.432 INFO [stderr]   --> src/main.rs:27:8
Nov 30 11:12:04.432 INFO [stderr]    |
Nov 30 11:12:04.432 INFO [stderr] 27 |    let mut twenty_one = my_vec.pop();
Nov 30 11:12:04.432 INFO [stderr]    |        ----^^^^^^^^^^
Nov 30 11:12:04.432 INFO [stderr]    |        |
Nov 30 11:12:04.432 INFO [stderr]    |        help: remove this `mut`
Nov 30 11:12:04.432 INFO [stderr]    |
Nov 30 11:12:04.432 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 11:12:04.432 INFO [stderr] 
Nov 30 11:12:04.580 INFO [stderr] warning: variable does not need to be mutable
Nov 30 11:12:04.580 INFO [stderr]   --> src/main.rs:27:8
Nov 30 11:12:04.580 INFO [stderr]    |
Nov 30 11:12:04.580 INFO [stderr] 27 |    let mut twenty_one = my_vec.pop();
Nov 30 11:12:04.580 INFO [stderr]    |        ----^^^^^^^^^^
Nov 30 11:12:04.580 INFO [stderr]    |        |
Nov 30 11:12:04.580 INFO [stderr]    |        help: remove this `mut`
Nov 30 11:12:04.580 INFO [stderr]    |
Nov 30 11:12:04.580 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 11:12:04.580 INFO [stderr] 
Nov 30 11:12:04.612 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
Nov 30 11:12:04.618 INFO [stderr] su: No module specific data is present
Nov 30 11:12:05.064 INFO running `"docker" "inspect" "fd7012106b82d566fa9dffea6148dd10411400606ca7caa14594488a3056630b"`
Nov 30 11:12:05.320 INFO running `"docker" "rm" "-f" "fd7012106b82d566fa9dffea6148dd10411400606ca7caa14594488a3056630b"`
Nov 30 11:12:05.580 INFO [stdout] fd7012106b82d566fa9dffea6148dd10411400606ca7caa14594488a3056630b