[INFO] updating cached repository bramvdbogaerde/brainfuck-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bramvdbogaerde/brainfuck-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bramvdbogaerde/brainfuck-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/bramvdbogaerde/brainfuck-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/bramvdbogaerde/brainfuck-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bramvdbogaerde/brainfuck-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bramvdbogaerde/brainfuck-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bramvdbogaerde/brainfuck-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a1a5c5f1456d37f3aa2cfb745f9624ca6b158414
[INFO] sha for GitHub repo bramvdbogaerde/brainfuck-rs: a1a5c5f1456d37f3aa2cfb745f9624ca6b158414
[INFO] validating manifest of bramvdbogaerde/brainfuck-rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bramvdbogaerde/brainfuck-rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bramvdbogaerde/brainfuck-rs
[INFO] finished frobbing bramvdbogaerde/brainfuck-rs
[INFO] frobbed toml for bramvdbogaerde/brainfuck-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/bramvdbogaerde/brainfuck-rs/Cargo.toml
[INFO] started frobbing bramvdbogaerde/brainfuck-rs
[INFO] finished frobbing bramvdbogaerde/brainfuck-rs
[INFO] frobbed toml for bramvdbogaerde/brainfuck-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bramvdbogaerde/brainfuck-rs/Cargo.toml
[INFO] crate bramvdbogaerde/brainfuck-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing bramvdbogaerde/brainfuck-rs against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bramvdbogaerde/brainfuck-rs:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] bb297a1b6f1da3478b358c056a2fbcf69436401aa197a909f735cf4eb89df5c6
[INFO] running `"docker" "start" "-a" "bb297a1b6f1da3478b358c056a2fbcf69436401aa197a909f735cf4eb89df5c6"`
[INFO] [stderr]    Compiling brainfuck-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     f.read_to_string(&mut buff);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "bb297a1b6f1da3478b358c056a2fbcf69436401aa197a909f735cf4eb89df5c6"`
[INFO] running `"docker" "rm" "-f" "bb297a1b6f1da3478b358c056a2fbcf69436401aa197a909f735cf4eb89df5c6"`
[INFO] [stdout] bb297a1b6f1da3478b358c056a2fbcf69436401aa197a909f735cf4eb89df5c6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bramvdbogaerde/brainfuck-rs:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7051245befa3208ea1b544baf06422730c0876f7d5a45f0d280a4b1b05e2eed3
[INFO] running `"docker" "start" "-a" "7051245befa3208ea1b544baf06422730c0876f7d5a45f0d280a4b1b05e2eed3"`
[INFO] [stderr]    Compiling brainfuck-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     f.read_to_string(&mut buff);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "7051245befa3208ea1b544baf06422730c0876f7d5a45f0d280a4b1b05e2eed3"`
[INFO] running `"docker" "rm" "-f" "7051245befa3208ea1b544baf06422730c0876f7d5a45f0d280a4b1b05e2eed3"`
[INFO] [stdout] 7051245befa3208ea1b544baf06422730c0876f7d5a45f0d280a4b1b05e2eed3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bramvdbogaerde/brainfuck-rs:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 08aba000bd9a054bf2743ee9dd2ee6a64f081b869294e8a572463965879b34c4
[INFO] running `"docker" "start" "-a" "08aba000bd9a054bf2743ee9dd2ee6a64f081b869294e8a572463965879b34c4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/brainfuck_rs-43cf1470da131133
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "08aba000bd9a054bf2743ee9dd2ee6a64f081b869294e8a572463965879b34c4"`
[INFO] running `"docker" "rm" "-f" "08aba000bd9a054bf2743ee9dd2ee6a64f081b869294e8a572463965879b34c4"`
[INFO] [stdout] 08aba000bd9a054bf2743ee9dd2ee6a64f081b869294e8a572463965879b34c4