Nov 16 15:35:31.858 INFO testing robbystk/rust-by-the-book against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 15:35:31.860 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 15:35:32.235 INFO [stdout] b033854c1bae02571374e93c194901cb06e80f2466d6468280823fa2368f1fc4
Nov 16 15:35:32.237 INFO running `"docker" "start" "-a" "b033854c1bae02571374e93c194901cb06e80f2466d6468280823fa2368f1fc4"`
Nov 16 15:35:32.781 INFO [stderr] usermod: no changes
Nov 16 15:35:32.819 INFO [stderr]    Compiling errors v0.1.0 (/source)
Nov 16 15:35:33.003 INFO [stderr] warning: unused variable: `f`
Nov 16 15:35:33.003 INFO [stderr]  --> src/main.rs:4:9
Nov 16 15:35:33.003 INFO [stderr]   |
Nov 16 15:35:33.003 INFO [stderr] 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 16 15:35:33.003 INFO [stderr]   |         ^ help: consider using `_f` instead
Nov 16 15:35:33.003 INFO [stderr]   |
Nov 16 15:35:33.003 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 16 15:35:33.003 INFO [stderr] 
Nov 16 15:35:33.283 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Nov 16 15:35:33.285 INFO [stderr] su: No module specific data is present
Nov 16 15:35:33.941 INFO running `"docker" "inspect" "b033854c1bae02571374e93c194901cb06e80f2466d6468280823fa2368f1fc4"`
Nov 16 15:35:34.113 INFO running `"docker" "rm" "-f" "b033854c1bae02571374e93c194901cb06e80f2466d6468280823fa2368f1fc4"`
Nov 16 15:35:34.251 INFO [stdout] b033854c1bae02571374e93c194901cb06e80f2466d6468280823fa2368f1fc4
Nov 16 15:35:34.256 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 15:35:34.519 INFO [stdout] 9d4be9cafecb4952491fa88ffb37b92688acb1f9d714b7b787d2e487cd7f84aa
Nov 16 15:35:34.525 INFO running `"docker" "start" "-a" "9d4be9cafecb4952491fa88ffb37b92688acb1f9d714b7b787d2e487cd7f84aa"`
Nov 16 15:35:35.295 INFO [stderr] usermod: no changes
Nov 16 15:35:35.326 INFO [stderr]    Compiling errors v0.1.0 (/source)
Nov 16 15:35:35.497 INFO [stderr] warning: unused variable: `f`
Nov 16 15:35:35.497 INFO [stderr]  --> src/main.rs:4:9
Nov 16 15:35:35.497 INFO [stderr]   |
Nov 16 15:35:35.497 INFO [stderr] 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 16 15:35:35.497 INFO [stderr]   |         ^ help: consider using `_f` instead
Nov 16 15:35:35.497 INFO [stderr]   |
Nov 16 15:35:35.497 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 16 15:35:35.497 INFO [stderr] 
Nov 16 15:35:35.791 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Nov 16 15:35:35.791 INFO [stderr] su: No module specific data is present
Nov 16 15:35:36.375 INFO running `"docker" "inspect" "9d4be9cafecb4952491fa88ffb37b92688acb1f9d714b7b787d2e487cd7f84aa"`
Nov 16 15:35:36.563 INFO running `"docker" "rm" "-f" "9d4be9cafecb4952491fa88ffb37b92688acb1f9d714b7b787d2e487cd7f84aa"`
Nov 16 15:35:36.775 INFO [stdout] 9d4be9cafecb4952491fa88ffb37b92688acb1f9d714b7b787d2e487cd7f84aa
Nov 16 15:35:36.780 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-5/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"`
Nov 16 15:35:37.168 INFO [stdout] 8912d0291e1d74d4aa06750fbe1c4ebae06289baa2021d8807398c99b0c14c03
Nov 16 15:35:37.171 INFO running `"docker" "start" "-a" "8912d0291e1d74d4aa06750fbe1c4ebae06289baa2021d8807398c99b0c14c03"`
Nov 16 15:35:38.347 INFO [stderr] usermod: no changes
Nov 16 15:35:38.397 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Nov 16 15:35:38.403 INFO [stderr]      Running /target/debug/deps/errors-5b89d234ebcb0b47
Nov 16 15:35:38.411 INFO [stdout] 
Nov 16 15:35:38.411 INFO [stdout] running 0 tests
Nov 16 15:35:38.411 INFO [stdout] 
Nov 16 15:35:38.412 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 15:35:38.412 INFO [stdout] 
Nov 16 15:35:38.414 INFO [stderr] su: No module specific data is present
Nov 16 15:35:39.123 INFO running `"docker" "inspect" "8912d0291e1d74d4aa06750fbe1c4ebae06289baa2021d8807398c99b0c14c03"`
Nov 16 15:35:39.443 INFO running `"docker" "rm" "-f" "8912d0291e1d74d4aa06750fbe1c4ebae06289baa2021d8807398c99b0c14c03"`
Nov 16 15:35:39.662 INFO [stdout] 8912d0291e1d74d4aa06750fbe1c4ebae06289baa2021d8807398c99b0c14c03