Dec 13 05:50:22.890 INFO testing robbystk/rust-by-the-book against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 05:50:22.890 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 13 05:50:23.192 INFO [stdout] ee3770b41da29e5dc3710e4090988a4f7d7e3312957dda002087ed5d1d94ea2b
Dec 13 05:50:23.195 INFO running `"docker" "start" "-a" "ee3770b41da29e5dc3710e4090988a4f7d7e3312957dda002087ed5d1d94ea2b"`
Dec 13 05:50:24.199 INFO [stderr] usermod: no changes
Dec 13 05:50:24.244 INFO [stderr]    Compiling errors v0.1.0 (/source)
Dec 13 05:50:24.454 INFO [stderr] warning: unused variable: `f`
Dec 13 05:50:24.454 INFO [stderr]  --> src/main.rs:4:9
Dec 13 05:50:24.454 INFO [stderr]   |
Dec 13 05:50:24.454 INFO [stderr] 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Dec 13 05:50:24.454 INFO [stderr]   |         ^ help: consider using `_f` instead
Dec 13 05:50:24.455 INFO [stderr]   |
Dec 13 05:50:24.455 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 13 05:50:24.455 INFO [stderr] 
Dec 13 05:50:24.779 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
Dec 13 05:50:24.782 INFO [stderr] su: No module specific data is present
Dec 13 05:50:25.319 INFO running `"docker" "inspect" "ee3770b41da29e5dc3710e4090988a4f7d7e3312957dda002087ed5d1d94ea2b"`
Dec 13 05:50:25.694 INFO running `"docker" "rm" "-f" "ee3770b41da29e5dc3710e4090988a4f7d7e3312957dda002087ed5d1d94ea2b"`
Dec 13 05:50:26.152 INFO [stdout] ee3770b41da29e5dc3710e4090988a4f7d7e3312957dda002087ed5d1d94ea2b
Dec 13 05:50:26.157 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 13 05:50:26.980 INFO [stdout] 390c426e80b74e96780aaf9e590d9f5ee0f6ec6ddc080a7ad1e7382ac8e394bd
Dec 13 05:50:26.987 INFO running `"docker" "start" "-a" "390c426e80b74e96780aaf9e590d9f5ee0f6ec6ddc080a7ad1e7382ac8e394bd"`
Dec 13 05:50:28.216 INFO [stderr] usermod: no changes
Dec 13 05:50:28.275 INFO [stderr]    Compiling errors v0.1.0 (/source)
Dec 13 05:50:28.523 INFO [stderr] warning: unused variable: `f`
Dec 13 05:50:28.523 INFO [stderr]  --> src/main.rs:4:9
Dec 13 05:50:28.523 INFO [stderr]   |
Dec 13 05:50:28.523 INFO [stderr] 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Dec 13 05:50:28.523 INFO [stderr]   |         ^ help: consider using `_f` instead
Dec 13 05:50:28.523 INFO [stderr]   |
Dec 13 05:50:28.523 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 13 05:50:28.523 INFO [stderr] 
Dec 13 05:50:28.988 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 13 05:50:28.988 INFO [stderr] su: No module specific data is present
Dec 13 05:50:29.685 INFO running `"docker" "inspect" "390c426e80b74e96780aaf9e590d9f5ee0f6ec6ddc080a7ad1e7382ac8e394bd"`
Dec 13 05:50:29.853 INFO running `"docker" "rm" "-f" "390c426e80b74e96780aaf9e590d9f5ee0f6ec6ddc080a7ad1e7382ac8e394bd"`
Dec 13 05:50:29.929 INFO [stdout] 390c426e80b74e96780aaf9e590d9f5ee0f6ec6ddc080a7ad1e7382ac8e394bd
Dec 13 05:50:29.933 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 13 05:50:30.185 INFO [stdout] 6b1c3d5111555b96a305bfcba7c795266475ce7d53d0e14d4052ed74945f33e6
Dec 13 05:50:30.186 INFO running `"docker" "start" "-a" "6b1c3d5111555b96a305bfcba7c795266475ce7d53d0e14d4052ed74945f33e6"`
Dec 13 05:50:30.862 INFO [stdout] 
Dec 13 05:50:30.862 INFO [stderr] usermod: no changes
Dec 13 05:50:30.862 INFO [stdout] running 0 tests
Dec 13 05:50:30.862 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 13 05:50:30.862 INFO [stdout] 
Dec 13 05:50:30.862 INFO [stderr]      Running /target/debug/deps/errors-fbbf952058628bd3
Dec 13 05:50:30.862 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 05:50:30.862 INFO [stderr] su: No module specific data is present
Dec 13 05:50:30.862 INFO [stdout] 
Dec 13 05:50:31.351 INFO running `"docker" "inspect" "6b1c3d5111555b96a305bfcba7c795266475ce7d53d0e14d4052ed74945f33e6"`
Dec 13 05:50:31.521 INFO running `"docker" "rm" "-f" "6b1c3d5111555b96a305bfcba7c795266475ce7d53d0e14d4052ed74945f33e6"`
Dec 13 05:50:31.746 INFO [stdout] 6b1c3d5111555b96a305bfcba7c795266475ce7d53d0e14d4052ed74945f33e6