Dec 19 12:38:26.941 INFO checking millere/bf against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:38:26.941 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/millere/bf:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:38:27.396 INFO [stdout] f2035ec5e92104ed23b9bd885a690836189002b400d7f9fe028c5500fda6ad12
Dec 19 12:38:27.448 INFO running `"docker" "start" "-a" "f2035ec5e92104ed23b9bd885a690836189002b400d7f9fe028c5500fda6ad12"`
Dec 19 12:38:28.664 INFO [stderr]     Checking bf v0.0.1 (/opt/crater/workdir)
Dec 19 12:38:28.841 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 12:38:28.841 INFO [stderr]  --> src/main.rs:2:5
Dec 19 12:38:28.841 INFO [stderr]   |
Dec 19 12:38:28.841 INFO [stderr] 2 | use std::io::Read;
Dec 19 12:38:28.841 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:38:28.841 INFO [stderr]   |
Dec 19 12:38:28.841 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:38:28.841 INFO [stderr] 
Dec 19 12:38:28.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:38:28.845 INFO [stderr]   --> src/main.rs:14:22
Dec 19 12:38:28.845 INFO [stderr]    |
Dec 19 12:38:28.845 INFO [stderr] 14 |             b'.' => {output.write(&mut buffer[mptr .. mptr+1]);},
Dec 19 12:38:28.845 INFO [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:28.845 INFO [stderr]    |
Dec 19 12:38:28.845 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:38:28.845 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:38:28.845 INFO [stderr] 
Dec 19 12:38:28.864 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 12:38:28.864 INFO [stderr]  --> src/main.rs:2:5
Dec 19 12:38:28.864 INFO [stderr]   |
Dec 19 12:38:28.864 INFO [stderr] 2 | use std::io::Read;
Dec 19 12:38:28.864 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 12:38:28.864 INFO [stderr]   |
Dec 19 12:38:28.864 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:38:28.864 INFO [stderr] 
Dec 19 12:38:28.870 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:38:28.871 INFO [stderr]   --> src/main.rs:14:22
Dec 19 12:38:28.871 INFO [stderr]    |
Dec 19 12:38:28.871 INFO [stderr] 14 |             b'.' => {output.write(&mut buffer[mptr .. mptr+1]);},
Dec 19 12:38:28.871 INFO [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:28.871 INFO [stderr]    |
Dec 19 12:38:28.871 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:38:28.871 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:38:28.871 INFO [stderr] 
Dec 19 12:38:28.888 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
Dec 19 12:38:29.322 INFO running `"docker" "inspect" "f2035ec5e92104ed23b9bd885a690836189002b400d7f9fe028c5500fda6ad12"`
Dec 19 12:38:29.606 INFO running `"docker" "rm" "-f" "f2035ec5e92104ed23b9bd885a690836189002b400d7f9fe028c5500fda6ad12"`
Dec 19 12:38:29.970 INFO [stdout] f2035ec5e92104ed23b9bd885a690836189002b400d7f9fe028c5500fda6ad12