Dec 14 12:38:01.877 INFO testing 8flag/hello_rust against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 14 12:38:01.877 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 12:38:02.070 INFO [stdout] 9c08bb7d52f0e8015c8f500fc7c1d5eb55246cb007fa714484dc58228a2ce910
Dec 14 12:38:02.070 INFO running `"docker" "start" "-a" "9c08bb7d52f0e8015c8f500fc7c1d5eb55246cb007fa714484dc58228a2ce910"`
Dec 14 12:38:02.669 INFO [stderr] usermod: no changes
Dec 14 12:38:02.696 INFO [stderr]    Compiling hello_rust v0.1.0 (/source)
Dec 14 12:38:03.012 INFO [stderr] warning: unused variable: `b`
Dec 14 12:38:03.012 INFO [stderr]  --> src/main.rs:5:9
Dec 14 12:38:03.012 INFO [stderr]   |
Dec 14 12:38:03.012 INFO [stderr] 5 |     let b:&str = &a;
Dec 14 12:38:03.012 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 14 12:38:03.012 INFO [stderr]   |
Dec 14 12:38:03.012 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 14 12:38:03.012 INFO [stderr] 
Dec 14 12:38:03.239 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Dec 14 12:38:03.243 INFO [stderr] su: No module specific data is present
Dec 14 12:38:03.513 INFO running `"docker" "inspect" "9c08bb7d52f0e8015c8f500fc7c1d5eb55246cb007fa714484dc58228a2ce910"`
Dec 14 12:38:03.649 INFO running `"docker" "rm" "-f" "9c08bb7d52f0e8015c8f500fc7c1d5eb55246cb007fa714484dc58228a2ce910"`
Dec 14 12:38:03.750 INFO [stdout] 9c08bb7d52f0e8015c8f500fc7c1d5eb55246cb007fa714484dc58228a2ce910
Dec 14 12:38:03.752 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 12:38:03.938 INFO [stdout] c8e2e23ee73c0d465707d33044a9499ea0836c716cd745cde58e406ae930587e
Dec 14 12:38:03.944 INFO running `"docker" "start" "-a" "c8e2e23ee73c0d465707d33044a9499ea0836c716cd745cde58e406ae930587e"`
Dec 14 12:38:04.466 INFO [stderr] usermod: no changes
Dec 14 12:38:04.516 INFO [stderr]    Compiling hello_rust v0.1.0 (/source)
Dec 14 12:38:04.914 INFO [stderr] warning: unused variable: `b`
Dec 14 12:38:04.975 INFO [stderr]  --> src/main.rs:5:9
Dec 14 12:38:04.975 INFO [stderr]   |
Dec 14 12:38:04.975 INFO [stderr] 5 |     let b:&str = &a;
Dec 14 12:38:04.975 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 14 12:38:04.975 INFO [stderr]   |
Dec 14 12:38:04.975 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 14 12:38:04.975 INFO [stderr] 
Dec 14 12:38:05.149 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
Dec 14 12:38:05.214 INFO [stderr] su: No module specific data is present
Dec 14 12:38:05.472 INFO running `"docker" "inspect" "c8e2e23ee73c0d465707d33044a9499ea0836c716cd745cde58e406ae930587e"`
Dec 14 12:38:05.568 INFO running `"docker" "rm" "-f" "c8e2e23ee73c0d465707d33044a9499ea0836c716cd745cde58e406ae930587e"`
Dec 14 12:38:05.674 INFO [stdout] c8e2e23ee73c0d465707d33044a9499ea0836c716cd745cde58e406ae930587e
Dec 14 12:38:05.676 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 14 12:38:05.833 INFO [stdout] 1dc8839765d2cf5c757224769036f37eb0403f0d97bd88b6e1f6cb471948c8ad
Dec 14 12:38:05.836 INFO running `"docker" "start" "-a" "1dc8839765d2cf5c757224769036f37eb0403f0d97bd88b6e1f6cb471948c8ad"`
Dec 14 12:38:06.234 INFO [stderr] usermod: no changes
Dec 14 12:38:06.267 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 14 12:38:06.267 INFO [stderr]      Running /target/debug/deps/hello_rust-4a59872adae4b6e8
Dec 14 12:38:06.267 INFO [stderr] su: No module specific data is present
Dec 14 12:38:06.267 INFO [stdout] 
Dec 14 12:38:06.267 INFO [stdout] running 0 tests
Dec 14 12:38:06.267 INFO [stdout] 
Dec 14 12:38:06.267 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 12:38:06.267 INFO [stdout] 
Dec 14 12:38:06.571 INFO running `"docker" "inspect" "1dc8839765d2cf5c757224769036f37eb0403f0d97bd88b6e1f6cb471948c8ad"`
Dec 14 12:38:06.712 INFO running `"docker" "rm" "-f" "1dc8839765d2cf5c757224769036f37eb0403f0d97bd88b6e1f6cb471948c8ad"`
Dec 14 12:38:06.831 INFO [stdout] 1dc8839765d2cf5c757224769036f37eb0403f0d97bd88b6e1f6cb471948c8ad