Dec 12 03:45:40.170 INFO checking BenjaminGuenin/rust-programming-tutorial against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 03:45:40.170 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 12 03:45:40.556 INFO [stdout] ae34b0ad1c1eb7deefacbf45aadbe09845fe70b48377870e3c97ab7b3e747fd1
Dec 12 03:45:40.562 INFO running `"docker" "start" "-a" "ae34b0ad1c1eb7deefacbf45aadbe09845fe70b48377870e3c97ab7b3e747fd1"`
Dec 12 03:45:41.366 INFO [stderr] usermod: no changes
Dec 12 03:45:41.422 INFO [stderr]     Checking rust-programming-tutorial v0.1.0 (/source)
Dec 12 03:45:41.859 INFO [stderr] warning: unused variable: `immutable_string`
Dec 12 03:45:41.859 INFO [stderr]  --> src/main.rs:3:9
Dec 12 03:45:41.859 INFO [stderr]   |
Dec 12 03:45:41.860 INFO [stderr] 3 |     let immutable_string = "hello"; // cannot be modified - stored on the stack
Dec 12 03:45:41.860 INFO [stderr]   |         ^^^^^^^^^^^^^^^^ help: consider using `_immutable_string` instead
Dec 12 03:45:41.860 INFO [stderr]   |
Dec 12 03:45:41.860 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 03:45:41.860 INFO [stderr] 
Dec 12 03:45:41.864 INFO [stderr] warning: unused variable: `s`
Dec 12 03:45:41.864 INFO [stderr]   --> src/main.rs:11:13
Dec 12 03:45:41.864 INFO [stderr]    |
Dec 12 03:45:41.864 INFO [stderr] 11 |         let s = String::from("hello"); // s is valid from this point forward
Dec 12 03:45:41.864 INFO [stderr]    |             ^ help: consider using `_s` instead
Dec 12 03:45:41.864 INFO [stderr] 
Dec 12 03:45:42.088 INFO [stderr] warning: unused variable: `immutable_string`
Dec 12 03:45:42.088 INFO [stderr]  --> src/main.rs:3:9
Dec 12 03:45:42.088 INFO [stderr]   |
Dec 12 03:45:42.088 INFO [stderr] 3 |     let immutable_string = "hello"; // cannot be modified - stored on the stack
Dec 12 03:45:42.088 INFO [stderr]   |         ^^^^^^^^^^^^^^^^ help: consider using `_immutable_string` instead
Dec 12 03:45:42.088 INFO [stderr]   |
Dec 12 03:45:42.088 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 03:45:42.088 INFO [stderr] 
Dec 12 03:45:42.088 INFO [stderr] warning: unused variable: `s`
Dec 12 03:45:42.088 INFO [stderr]   --> src/main.rs:11:13
Dec 12 03:45:42.088 INFO [stderr]    |
Dec 12 03:45:42.088 INFO [stderr] 11 |         let s = String::from("hello"); // s is valid from this point forward
Dec 12 03:45:42.088 INFO [stderr]    |             ^ help: consider using `_s` instead
Dec 12 03:45:42.088 INFO [stderr] 
Dec 12 03:45:42.098 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Dec 12 03:45:42.101 INFO [stderr] su: No module specific data is present
Dec 12 03:45:42.562 INFO running `"docker" "inspect" "ae34b0ad1c1eb7deefacbf45aadbe09845fe70b48377870e3c97ab7b3e747fd1"`
Dec 12 03:45:42.877 INFO running `"docker" "rm" "-f" "ae34b0ad1c1eb7deefacbf45aadbe09845fe70b48377870e3c97ab7b3e747fd1"`
Dec 12 03:45:43.096 INFO [stdout] ae34b0ad1c1eb7deefacbf45aadbe09845fe70b48377870e3c97ab7b3e747fd1