Dec 06 16:08:53.696 INFO testing 8flag/hello_rust against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 16:08:53.696 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 16:08:53.837 INFO [stdout] 8db50e1e89e59b2b75a92bd6249ade8498ccf78df48a6745fe1bfd5aea323cc0
Dec 06 16:08:53.839 INFO running `"docker" "start" "-a" "8db50e1e89e59b2b75a92bd6249ade8498ccf78df48a6745fe1bfd5aea323cc0"`
Dec 06 16:08:54.228 INFO [stderr] usermod: no changes
Dec 06 16:08:54.267 INFO [stderr]    Compiling hello_rust v0.1.0 (/source)
Dec 06 16:08:54.600 INFO [stderr] warning: unused variable: `b`
Dec 06 16:08:54.600 INFO [stderr]  --> src/main.rs:5:9
Dec 06 16:08:54.600 INFO [stderr]   |
Dec 06 16:08:54.600 INFO [stderr] 5 |     let b:&str = &a;
Dec 06 16:08:54.600 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 06 16:08:54.600 INFO [stderr]   |
Dec 06 16:08:54.600 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 06 16:08:54.600 INFO [stderr] 
Dec 06 16:08:54.814 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Dec 06 16:08:54.816 INFO [stderr] su: No module specific data is present
Dec 06 16:08:55.065 INFO running `"docker" "inspect" "8db50e1e89e59b2b75a92bd6249ade8498ccf78df48a6745fe1bfd5aea323cc0"`
Dec 06 16:08:55.145 INFO running `"docker" "rm" "-f" "8db50e1e89e59b2b75a92bd6249ade8498ccf78df48a6745fe1bfd5aea323cc0"`
Dec 06 16:08:55.239 INFO [stdout] 8db50e1e89e59b2b75a92bd6249ade8498ccf78df48a6745fe1bfd5aea323cc0
Dec 06 16:08:55.241 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 16:08:55.448 INFO [stdout] 2981842cbe6f694cae745be801083a8960bb0e5aff768dea309adc99152da6c3
Dec 06 16:08:55.450 INFO running `"docker" "start" "-a" "2981842cbe6f694cae745be801083a8960bb0e5aff768dea309adc99152da6c3"`
Dec 06 16:08:55.843 INFO [stderr] usermod: no changes
Dec 06 16:08:55.873 INFO [stderr]    Compiling hello_rust v0.1.0 (/source)
Dec 06 16:08:56.241 INFO [stderr] warning: unused variable: `b`
Dec 06 16:08:56.241 INFO [stderr]  --> src/main.rs:5:9
Dec 06 16:08:56.241 INFO [stderr]   |
Dec 06 16:08:56.241 INFO [stderr] 5 |     let b:&str = &a;
Dec 06 16:08:56.241 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 06 16:08:56.241 INFO [stderr]   |
Dec 06 16:08:56.241 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 06 16:08:56.241 INFO [stderr] 
Dec 06 16:08:56.444 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
Dec 06 16:08:56.446 INFO [stderr] su: No module specific data is present
Dec 06 16:08:56.669 INFO running `"docker" "inspect" "2981842cbe6f694cae745be801083a8960bb0e5aff768dea309adc99152da6c3"`
Dec 06 16:08:56.760 INFO running `"docker" "rm" "-f" "2981842cbe6f694cae745be801083a8960bb0e5aff768dea309adc99152da6c3"`
Dec 06 16:08:56.860 INFO [stdout] 2981842cbe6f694cae745be801083a8960bb0e5aff768dea309adc99152da6c3
Dec 06 16:08:56.863 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 16:08:57.010 INFO [stdout] 21167e4028333b050747eb3ca3a2e359d4d5a88668517079e8225549f15ac5a9
Dec 06 16:08:57.012 INFO running `"docker" "start" "-a" "21167e4028333b050747eb3ca3a2e359d4d5a88668517079e8225549f15ac5a9"`
Dec 06 16:08:57.395 INFO [stderr] usermod: no changes
Dec 06 16:08:57.423 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 06 16:08:57.423 INFO [stderr]      Running /target/debug/deps/hello_rust-10338a5b78229a38
Dec 06 16:08:57.424 INFO [stdout] 
Dec 06 16:08:57.424 INFO [stdout] running 0 tests
Dec 06 16:08:57.424 INFO [stdout] 
Dec 06 16:08:57.424 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 16:08:57.424 INFO [stdout] 
Dec 06 16:08:57.426 INFO [stderr] su: No module specific data is present
Dec 06 16:08:57.769 INFO running `"docker" "inspect" "21167e4028333b050747eb3ca3a2e359d4d5a88668517079e8225549f15ac5a9"`
Dec 06 16:08:57.862 INFO running `"docker" "rm" "-f" "21167e4028333b050747eb3ca3a2e359d4d5a88668517079e8225549f15ac5a9"`
Dec 06 16:08:57.938 INFO [stdout] 21167e4028333b050747eb3ca3a2e359d4d5a88668517079e8225549f15ac5a9