Nov 16 09:09:14.768 INFO testing vksmgr/read_file against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 09:09:14.768 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 09:09:15.320 INFO [stdout] 3f817360903091750860ef5bde79247d20349bef59663203ca2f560f6009ff45
Nov 16 09:09:15.325 INFO running `"docker" "start" "-a" "3f817360903091750860ef5bde79247d20349bef59663203ca2f560f6009ff45"`
Nov 16 09:09:16.395 INFO [stderr] usermod: no changes
Nov 16 09:09:16.451 INFO [stderr]    Compiling os v0.1.0 (/source)
Nov 16 09:09:16.634 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 09:09:16.634 INFO [stderr]  --> src/main.rs:5:5
Nov 16 09:09:16.634 INFO [stderr]   |
Nov 16 09:09:16.635 INFO [stderr] 5 |     read_all_lines("test.txt");
Nov 16 09:09:16.635 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 09:09:16.635 INFO [stderr]   |
Nov 16 09:09:16.636 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Nov 16 09:09:16.636 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 09:09:16.636 INFO [stderr] 
Nov 16 09:09:17.215 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
Nov 16 09:09:17.215 INFO [stderr] su: No module specific data is present
Nov 16 09:09:17.752 INFO running `"docker" "inspect" "3f817360903091750860ef5bde79247d20349bef59663203ca2f560f6009ff45"`
Nov 16 09:09:17.821 INFO running `"docker" "rm" "-f" "3f817360903091750860ef5bde79247d20349bef59663203ca2f560f6009ff45"`
Nov 16 09:09:17.921 INFO [stdout] 3f817360903091750860ef5bde79247d20349bef59663203ca2f560f6009ff45
Nov 16 09:09:17.923 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 09:09:18.170 INFO [stdout] b462ebc3bb3876b62702e7783718f4c599a5e940845917f68b5ccdb638b2e446
Nov 16 09:09:18.172 INFO running `"docker" "start" "-a" "b462ebc3bb3876b62702e7783718f4c599a5e940845917f68b5ccdb638b2e446"`
Nov 16 09:09:18.587 INFO [stderr] usermod: no changes
Nov 16 09:09:18.614 INFO [stderr]    Compiling os v0.1.0 (/source)
Nov 16 09:09:18.768 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 09:09:18.768 INFO [stderr]  --> src/main.rs:5:5
Nov 16 09:09:18.768 INFO [stderr]   |
Nov 16 09:09:18.768 INFO [stderr] 5 |     read_all_lines("test.txt");
Nov 16 09:09:18.768 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 09:09:18.768 INFO [stderr]   |
Nov 16 09:09:18.768 INFO [stderr]   = note: #[warn(unused_must_use)] on by default
Nov 16 09:09:18.768 INFO [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 09:09:18.768 INFO [stderr] 
Nov 16 09:09:19.039 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Nov 16 09:09:19.039 INFO [stderr] su: No module specific data is present
Nov 16 09:09:19.541 INFO running `"docker" "inspect" "b462ebc3bb3876b62702e7783718f4c599a5e940845917f68b5ccdb638b2e446"`
Nov 16 09:09:19.620 INFO running `"docker" "rm" "-f" "b462ebc3bb3876b62702e7783718f4c599a5e940845917f68b5ccdb638b2e446"`
Nov 16 09:09:19.722 INFO [stdout] b462ebc3bb3876b62702e7783718f4c599a5e940845917f68b5ccdb638b2e446
Nov 16 09:09:19.727 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-2/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 09:09:20.136 INFO [stdout] ab5e585cf82323985cd0ba41fb7cf84df779e19cacaaee7335ecf5ed8fa5135e
Nov 16 09:09:20.138 INFO running `"docker" "start" "-a" "ab5e585cf82323985cd0ba41fb7cf84df779e19cacaaee7335ecf5ed8fa5135e"`
Nov 16 09:09:20.576 INFO [stderr] usermod: no changes
Nov 16 09:09:20.611 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 16 09:09:20.615 INFO [stderr]      Running /target/debug/deps/os-4725c82d2bbf46e1
Nov 16 09:09:20.616 INFO [stdout] 
Nov 16 09:09:20.616 INFO [stdout] running 0 tests
Nov 16 09:09:20.616 INFO [stdout] 
Nov 16 09:09:20.616 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 09:09:20.616 INFO [stdout] 
Nov 16 09:09:20.620 INFO [stderr] su: No module specific data is present
Nov 16 09:09:21.354 INFO running `"docker" "inspect" "ab5e585cf82323985cd0ba41fb7cf84df779e19cacaaee7335ecf5ed8fa5135e"`
Nov 16 09:09:21.628 INFO running `"docker" "rm" "-f" "ab5e585cf82323985cd0ba41fb7cf84df779e19cacaaee7335ecf5ed8fa5135e"`
Nov 16 09:09:21.805 INFO [stdout] ab5e585cf82323985cd0ba41fb7cf84df779e19cacaaee7335ecf5ed8fa5135e