Dec 05 09:54:14.654 INFO testing robbystk/rust-by-the-book against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 09:54:14.654 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 05 09:54:14.877 INFO [stdout] 10017d327fcc5c73b828f69d6e6182a8090418fccbb2112e23eb13b4aa32bbf2
Dec 05 09:54:14.882 INFO running `"docker" "start" "-a" "10017d327fcc5c73b828f69d6e6182a8090418fccbb2112e23eb13b4aa32bbf2"`
Dec 05 09:54:15.514 INFO [stderr] usermod: no changes
Dec 05 09:54:15.539 INFO [stderr]    Compiling errors v0.1.0 (/source)
Dec 05 09:54:15.687 INFO [stderr] warning: unused variable: `f`
Dec 05 09:54:15.687 INFO [stderr]  --> src/main.rs:4:9
Dec 05 09:54:15.687 INFO [stderr]   |
Dec 05 09:54:15.687 INFO [stderr] 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Dec 05 09:54:15.687 INFO [stderr]   |         ^ help: consider using `_f` instead
Dec 05 09:54:15.687 INFO [stderr]   |
Dec 05 09:54:15.687 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 09:54:15.687 INFO [stderr] 
Dec 05 09:54:15.856 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
Dec 05 09:54:15.858 INFO [stderr] su: No module specific data is present
Dec 05 09:54:16.120 INFO running `"docker" "inspect" "10017d327fcc5c73b828f69d6e6182a8090418fccbb2112e23eb13b4aa32bbf2"`
Dec 05 09:54:16.246 INFO running `"docker" "rm" "-f" "10017d327fcc5c73b828f69d6e6182a8090418fccbb2112e23eb13b4aa32bbf2"`
Dec 05 09:54:16.376 INFO [stdout] 10017d327fcc5c73b828f69d6e6182a8090418fccbb2112e23eb13b4aa32bbf2
Dec 05 09:54:16.376 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 05 09:54:16.532 INFO [stdout] 27abe50e2491b9e9e4f94c613084aa300cddd9dc2bf5242b2cd3862868f02423
Dec 05 09:54:16.538 INFO running `"docker" "start" "-a" "27abe50e2491b9e9e4f94c613084aa300cddd9dc2bf5242b2cd3862868f02423"`
Dec 05 09:54:17.406 INFO [stderr] usermod: no changes
Dec 05 09:54:17.464 INFO [stderr]    Compiling errors v0.1.0 (/source)
Dec 05 09:54:17.783 INFO [stderr] warning: unused variable: `f`
Dec 05 09:54:17.783 INFO [stderr]  --> src/main.rs:4:9
Dec 05 09:54:17.783 INFO [stderr]   |
Dec 05 09:54:17.783 INFO [stderr] 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Dec 05 09:54:17.783 INFO [stderr]   |         ^ help: consider using `_f` instead
Dec 05 09:54:17.783 INFO [stderr]   |
Dec 05 09:54:17.783 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 09:54:17.783 INFO [stderr] 
Dec 05 09:54:18.135 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
Dec 05 09:54:18.135 INFO [stderr] su: No module specific data is present
Dec 05 09:54:18.792 INFO running `"docker" "inspect" "27abe50e2491b9e9e4f94c613084aa300cddd9dc2bf5242b2cd3862868f02423"`
Dec 05 09:54:19.104 INFO running `"docker" "rm" "-f" "27abe50e2491b9e9e4f94c613084aa300cddd9dc2bf5242b2cd3862868f02423"`
Dec 05 09:54:19.520 INFO [stdout] 27abe50e2491b9e9e4f94c613084aa300cddd9dc2bf5242b2cd3862868f02423
Dec 05 09:54:19.532 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/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 05 09:54:20.052 INFO [stdout] 4b32032e32b15bc9e41471b6cbf8f979279cc4a5aaf2ed5e7f27dd5fd9fb43ef
Dec 05 09:54:20.053 INFO running `"docker" "start" "-a" "4b32032e32b15bc9e41471b6cbf8f979279cc4a5aaf2ed5e7f27dd5fd9fb43ef"`
Dec 05 09:54:21.010 INFO [stderr] usermod: no changes
Dec 05 09:54:21.084 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Dec 05 09:54:21.092 INFO [stdout] 
Dec 05 09:54:21.092 INFO [stdout] running 0 tests
Dec 05 09:54:21.092 INFO [stdout] 
Dec 05 09:54:21.092 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 09:54:21.092 INFO [stdout] 
Dec 05 09:54:21.092 INFO [stderr]      Running /target/debug/deps/errors-97db1af0558950df
Dec 05 09:54:21.092 INFO [stderr] su: No module specific data is present
Dec 05 09:54:21.758 INFO running `"docker" "inspect" "4b32032e32b15bc9e41471b6cbf8f979279cc4a5aaf2ed5e7f27dd5fd9fb43ef"`
Dec 05 09:54:22.093 INFO running `"docker" "rm" "-f" "4b32032e32b15bc9e41471b6cbf8f979279cc4a5aaf2ed5e7f27dd5fd9fb43ef"`
Dec 05 09:54:22.432 INFO [stdout] 4b32032e32b15bc9e41471b6cbf8f979279cc4a5aaf2ed5e7f27dd5fd9fb43ef