Dec 06 15:29:06.122 INFO testing BenjaminGuenin/rust-programming-tutorial against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 15:29:06.122 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-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 06 15:29:06.387 INFO [stdout] e8776903513b85dbb1aba1aaee22c17ab26a3b0307c5b2cf9973d0d05d634edc
Dec 06 15:29:06.390 INFO running `"docker" "start" "-a" "e8776903513b85dbb1aba1aaee22c17ab26a3b0307c5b2cf9973d0d05d634edc"`
Dec 06 15:29:06.972 INFO [stderr] usermod: no changes
Dec 06 15:29:07.008 INFO [stderr]    Compiling rust-programming-tutorial v0.1.0 (/source)
Dec 06 15:29:07.344 INFO [stderr] warning: unused variable: `immutable_string`
Dec 06 15:29:07.344 INFO [stderr]  --> src/main.rs:3:9
Dec 06 15:29:07.344 INFO [stderr]   |
Dec 06 15:29:07.344 INFO [stderr] 3 |     let immutable_string = "hello"; // cannot be modified - stored on the stack
Dec 06 15:29:07.344 INFO [stderr]   |         ^^^^^^^^^^^^^^^^ help: consider using `_immutable_string` instead
Dec 06 15:29:07.344 INFO [stderr]   |
Dec 06 15:29:07.344 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 06 15:29:07.344 INFO [stderr] 
Dec 06 15:29:07.344 INFO [stderr] warning: unused variable: `s`
Dec 06 15:29:07.344 INFO [stderr]   --> src/main.rs:11:13
Dec 06 15:29:07.344 INFO [stderr]    |
Dec 06 15:29:07.344 INFO [stderr] 11 |         let s = String::from("hello"); // s is valid from this point forward
Dec 06 15:29:07.344 INFO [stderr]    |             ^ help: consider using `_s` instead
Dec 06 15:29:07.344 INFO [stderr] 
Dec 06 15:29:07.628 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Dec 06 15:29:07.631 INFO [stderr] su: No module specific data is present
Dec 06 15:29:08.055 INFO running `"docker" "inspect" "e8776903513b85dbb1aba1aaee22c17ab26a3b0307c5b2cf9973d0d05d634edc"`
Dec 06 15:29:08.192 INFO running `"docker" "rm" "-f" "e8776903513b85dbb1aba1aaee22c17ab26a3b0307c5b2cf9973d0d05d634edc"`
Dec 06 15:29:08.369 INFO [stdout] e8776903513b85dbb1aba1aaee22c17ab26a3b0307c5b2cf9973d0d05d634edc
Dec 06 15:29:08.370 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-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 06 15:29:08.672 INFO [stdout] 308305a6fceb4767fe370b2f567e789b4760aa6b3cbb096e6929f27884bda75b
Dec 06 15:29:08.677 INFO running `"docker" "start" "-a" "308305a6fceb4767fe370b2f567e789b4760aa6b3cbb096e6929f27884bda75b"`
Dec 06 15:29:09.360 INFO [stderr] usermod: no changes
Dec 06 15:29:09.406 INFO [stderr]    Compiling rust-programming-tutorial v0.1.0 (/source)
Dec 06 15:29:09.888 INFO [stderr] warning: unused variable: `immutable_string`
Dec 06 15:29:09.888 INFO [stderr]  --> src/main.rs:3:9
Dec 06 15:29:09.888 INFO [stderr]   |
Dec 06 15:29:09.888 INFO [stderr] 3 |     let immutable_string = "hello"; // cannot be modified - stored on the stack
Dec 06 15:29:09.888 INFO [stderr]   |         ^^^^^^^^^^^^^^^^ help: consider using `_immutable_string` instead
Dec 06 15:29:09.888 INFO [stderr]   |
Dec 06 15:29:09.888 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 06 15:29:09.888 INFO [stderr] 
Dec 06 15:29:09.888 INFO [stderr] warning: unused variable: `s`
Dec 06 15:29:09.888 INFO [stderr]   --> src/main.rs:11:13
Dec 06 15:29:09.888 INFO [stderr]    |
Dec 06 15:29:09.888 INFO [stderr] 11 |         let s = String::from("hello"); // s is valid from this point forward
Dec 06 15:29:09.888 INFO [stderr]    |             ^ help: consider using `_s` instead
Dec 06 15:29:09.888 INFO [stderr] 
Dec 06 15:29:10.187 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Dec 06 15:29:10.192 INFO [stderr] su: No module specific data is present
Dec 06 15:29:10.779 INFO running `"docker" "inspect" "308305a6fceb4767fe370b2f567e789b4760aa6b3cbb096e6929f27884bda75b"`
Dec 06 15:29:10.986 INFO running `"docker" "rm" "-f" "308305a6fceb4767fe370b2f567e789b4760aa6b3cbb096e6929f27884bda75b"`
Dec 06 15:29:11.244 INFO [stdout] 308305a6fceb4767fe370b2f567e789b4760aa6b3cbb096e6929f27884bda75b
Dec 06 15:29:11.250 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-3/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen" "-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 06 15:29:11.611 INFO [stdout] 4bd257f9e8cf93da569aed2ecc5fc61d15faf711d60d45fea1111dea1d6b142b
Dec 06 15:29:11.618 INFO running `"docker" "start" "-a" "4bd257f9e8cf93da569aed2ecc5fc61d15faf711d60d45fea1111dea1d6b142b"`
Dec 06 15:29:12.549 INFO [stderr] usermod: no changes
Dec 06 15:29:12.604 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 06 15:29:12.608 INFO [stderr]      Running /target/debug/deps/rust_programming_tutorial-d08cdc6f6ba885e2
Dec 06 15:29:12.616 INFO [stdout] 
Dec 06 15:29:12.616 INFO [stdout] running 0 tests
Dec 06 15:29:12.616 INFO [stdout] 
Dec 06 15:29:12.616 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 15:29:12.616 INFO [stdout] 
Dec 06 15:29:12.618 INFO [stderr] su: No module specific data is present
Dec 06 15:29:13.482 INFO running `"docker" "inspect" "4bd257f9e8cf93da569aed2ecc5fc61d15faf711d60d45fea1111dea1d6b142b"`
Dec 06 15:29:13.594 INFO running `"docker" "rm" "-f" "4bd257f9e8cf93da569aed2ecc5fc61d15faf711d60d45fea1111dea1d6b142b"`
Dec 06 15:29:13.714 INFO [stdout] 4bd257f9e8cf93da569aed2ecc5fc61d15faf711d60d45fea1111dea1d6b142b