[INFO] updating cached repository https://github.com/m-g-dev/fbsep
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dadcccc02332f35a81014596f15aeb7e8dd9d124
[INFO] testing m-g-dev/fbsep against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-g-dev%2Ffbsep" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/m-g-dev/fbsep on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/m-g-dev/fbsep
[INFO] finished tweaking git repo https://github.com/m-g-dev/fbsep
[INFO] tweaked toml for git repo https://github.com/m-g-dev/fbsep written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/m-g-dev/fbsep already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] ec5cc89f67832069aa9bab623e862b36d32905d5de797b46d42c8a2fab7562b5
[INFO] running `"docker" "start" "-a" "ec5cc89f67832069aa9bab623e862b36d32905d5de797b46d42c8a2fab7562b5"`
[INFO] [stderr]    Compiling fbsep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `greyscale`
[INFO] [stderr]  --> src/lib.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn binarization(greyscale: &[u8]) -> i32 {
[INFO] [stderr]   |                     ^^^^^^^^^ help: consider prefixing with an underscore: `_greyscale`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "ec5cc89f67832069aa9bab623e862b36d32905d5de797b46d42c8a2fab7562b5"`
[INFO] running `"docker" "rm" "-f" "ec5cc89f67832069aa9bab623e862b36d32905d5de797b46d42c8a2fab7562b5"`
[INFO] [stdout] ec5cc89f67832069aa9bab623e862b36d32905d5de797b46d42c8a2fab7562b5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9ccaaf0c51ddfc06fef35ea97ee9a8dc61ecfe6189c6ddfe1331c482f94deb09
[INFO] running `"docker" "start" "-a" "9ccaaf0c51ddfc06fef35ea97ee9a8dc61ecfe6189c6ddfe1331c482f94deb09"`
[INFO] [stderr]    Compiling fbsep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `greyscale`
[INFO] [stderr]  --> src/lib.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn binarization(greyscale: &[u8]) -> i32 {
[INFO] [stderr]   |                     ^^^^^^^^^ help: consider prefixing with an underscore: `_greyscale`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `a`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn a() {
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "9ccaaf0c51ddfc06fef35ea97ee9a8dc61ecfe6189c6ddfe1331c482f94deb09"`
[INFO] running `"docker" "rm" "-f" "9ccaaf0c51ddfc06fef35ea97ee9a8dc61ecfe6189c6ddfe1331c482f94deb09"`
[INFO] [stdout] 9ccaaf0c51ddfc06fef35ea97ee9a8dc61ecfe6189c6ddfe1331c482f94deb09
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 2fa161e519665735e34469401cfaf891f3b87405588266ec75c0e0464b764499
[INFO] running `"docker" "start" "-a" "2fa161e519665735e34469401cfaf891f3b87405588266ec75c0e0464b764499"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fbsep-2cdb0e802956b5b1
[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] [stderr]    Doc-tests fbsep
[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" "2fa161e519665735e34469401cfaf891f3b87405588266ec75c0e0464b764499"`
[INFO] running `"docker" "rm" "-f" "2fa161e519665735e34469401cfaf891f3b87405588266ec75c0e0464b764499"`
[INFO] [stdout] 2fa161e519665735e34469401cfaf891f3b87405588266ec75c0e0464b764499