[INFO] updating cached repository https://github.com/luca-moser/mandelbrot
[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] 70e9920af31dda6debd6d5852caba23804ac4048
[INFO] testing luca-moser/mandelbrot against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluca-moser%2Fmandelbrot" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luca-moser/mandelbrot 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/luca-moser/mandelbrot
[INFO] finished tweaking git repo https://github.com/luca-moser/mandelbrot
[INFO] tweaked toml for git repo https://github.com/luca-moser/mandelbrot written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/luca-moser/mandelbrot 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] d0db86e014d98d416be60d98177fd7eac4d197245c89d9e491545823d77a9081
[INFO] running `"docker" "start" "-a" "d0db86e014d98d416be60d98177fd7eac4d197245c89d9e491545823d77a9081"`
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling png v0.7.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.13.0
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.32s
[INFO] running `"docker" "inspect" "d0db86e014d98d416be60d98177fd7eac4d197245c89d9e491545823d77a9081"`
[INFO] running `"docker" "rm" "-f" "d0db86e014d98d416be60d98177fd7eac4d197245c89d9e491545823d77a9081"`
[INFO] [stdout] d0db86e014d98d416be60d98177fd7eac4d197245c89d9e491545823d77a9081
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] e40e3b1c009c53541fd3208b3e3d9d29a6301ce8c985f891f0359e53a3da266b
[INFO] running `"docker" "start" "-a" "e40e3b1c009c53541fd3208b3e3d9d29a6301ce8c985f891f0359e53a3da266b"`
[INFO] [stderr]    Compiling mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     assert_eq!(parse_pair::<i32>("0.5x1.5", 'x'), Some((0.5, 1.5)));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected i32, found floating-point number
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `std::option::Option<(i32, i32)>`
[INFO] [stderr]               found type `std::option::Option<({float}, {float})>`
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `mandelbrot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e40e3b1c009c53541fd3208b3e3d9d29a6301ce8c985f891f0359e53a3da266b"`
[INFO] running `"docker" "rm" "-f" "e40e3b1c009c53541fd3208b3e3d9d29a6301ce8c985f891f0359e53a3da266b"`
[INFO] [stdout] e40e3b1c009c53541fd3208b3e3d9d29a6301ce8c985f891f0359e53a3da266b