Dec 14 12:38:01.573 INFO testing 8flag/hello_rust against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 12:38:01.573 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 12:38:01.874 INFO [stdout] f0ae88870c590b932d3637a94f05db457721e971cf4385c51b7c7dc14e921731
Dec 14 12:38:01.874 INFO running `"docker" "start" "-a" "f0ae88870c590b932d3637a94f05db457721e971cf4385c51b7c7dc14e921731"`
Dec 14 12:38:02.250 INFO [stderr] usermod: no changes
Dec 14 12:38:02.299 INFO [stderr]    Compiling hello_rust v0.1.0 (/source)
Dec 14 12:38:02.614 INFO [stderr] warning: unused variable: `b`
Dec 14 12:38:02.614 INFO [stderr]  --> src/main.rs:5:9
Dec 14 12:38:02.614 INFO [stderr]   |
Dec 14 12:38:02.614 INFO [stderr] 5 |     let b:&str = &a;
Dec 14 12:38:02.614 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 14 12:38:02.614 INFO [stderr]   |
Dec 14 12:38:02.614 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 14 12:38:02.614 INFO [stderr] 
Dec 14 12:38:02.881 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
Dec 14 12:38:02.884 INFO [stderr] su: No module specific data is present
Dec 14 12:38:03.108 INFO running `"docker" "inspect" "f0ae88870c590b932d3637a94f05db457721e971cf4385c51b7c7dc14e921731"`
Dec 14 12:38:03.220 INFO running `"docker" "rm" "-f" "f0ae88870c590b932d3637a94f05db457721e971cf4385c51b7c7dc14e921731"`
Dec 14 12:38:03.318 INFO [stdout] f0ae88870c590b932d3637a94f05db457721e971cf4385c51b7c7dc14e921731
Dec 14 12:38:03.320 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 12:38:03.573 INFO [stdout] 1432ea00e17ae617186bbc88b0d161588febfffc78da3731a2eb356b2f40b8ea
Dec 14 12:38:03.576 INFO running `"docker" "start" "-a" "1432ea00e17ae617186bbc88b0d161588febfffc78da3731a2eb356b2f40b8ea"`
Dec 14 12:38:03.976 INFO [stderr] usermod: no changes
Dec 14 12:38:04.002 INFO [stderr]    Compiling hello_rust v0.1.0 (/source)
Dec 14 12:38:04.417 INFO [stderr] warning: unused variable: `b`
Dec 14 12:38:04.417 INFO [stderr]  --> src/main.rs:5:9
Dec 14 12:38:04.417 INFO [stderr]   |
Dec 14 12:38:04.417 INFO [stderr] 5 |     let b:&str = &a;
Dec 14 12:38:04.417 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 14 12:38:04.417 INFO [stderr]   |
Dec 14 12:38:04.417 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 14 12:38:04.417 INFO [stderr] 
Dec 14 12:38:04.690 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Dec 14 12:38:04.690 INFO [stderr] su: No module specific data is present
Dec 14 12:38:04.975 INFO running `"docker" "inspect" "1432ea00e17ae617186bbc88b0d161588febfffc78da3731a2eb356b2f40b8ea"`
Dec 14 12:38:05.102 INFO running `"docker" "rm" "-f" "1432ea00e17ae617186bbc88b0d161588febfffc78da3731a2eb356b2f40b8ea"`
Dec 14 12:38:05.213 INFO [stdout] 1432ea00e17ae617186bbc88b0d161588febfffc78da3731a2eb356b2f40b8ea
Dec 14 12:38:05.213 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-4/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 12:38:05.438 INFO [stdout] 4a2c6ebea7c061d6545de73a027ebf6207c00946c5a2bbdfb18d1462c8988017
Dec 14 12:38:05.440 INFO running `"docker" "start" "-a" "4a2c6ebea7c061d6545de73a027ebf6207c00946c5a2bbdfb18d1462c8988017"`
Dec 14 12:38:05.862 INFO [stderr] usermod: no changes
Dec 14 12:38:05.887 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 14 12:38:05.887 INFO [stderr]      Running /target/debug/deps/hello_rust-bb361d963177dc6c
Dec 14 12:38:05.889 INFO [stdout] 
Dec 14 12:38:05.889 INFO [stdout] running 0 tests
Dec 14 12:38:05.889 INFO [stdout] 
Dec 14 12:38:05.889 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 14 12:38:05.889 INFO [stdout] 
Dec 14 12:38:05.891 INFO [stderr] su: No module specific data is present
Dec 14 12:38:06.129 INFO running `"docker" "inspect" "4a2c6ebea7c061d6545de73a027ebf6207c00946c5a2bbdfb18d1462c8988017"`
Dec 14 12:38:06.183 INFO running `"docker" "rm" "-f" "4a2c6ebea7c061d6545de73a027ebf6207c00946c5a2bbdfb18d1462c8988017"`
Dec 14 12:38:06.259 INFO [stdout] 4a2c6ebea7c061d6545de73a027ebf6207c00946c5a2bbdfb18d1462c8988017