[INFO] updating cached repository https://github.com/wahtak/rust-mandelbrot
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 24b3733a697b095f90e8de6f920251efc7e2fe6e
[INFO] testing wahtak/rust-mandelbrot against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwahtak%2Frust-mandelbrot" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wahtak/rust-mandelbrot on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wahtak/rust-mandelbrot
[INFO] finished tweaking git repo https://github.com/wahtak/rust-mandelbrot
[INFO] tweaked toml for git repo https://github.com/wahtak/rust-mandelbrot written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/wahtak/rust-mandelbrot already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cac4c50db76ad7632bcd149adef661e8df2a0772a1c0023554c89b6d4922cab4
[INFO] running `"docker" "start" "-a" "cac4c50db76ad7632bcd149adef661e8df2a0772a1c0023554c89b6d4922cab4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling libc v0.2.53
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling image v0.21.1
[INFO] [stderr]    Compiling rust_mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw`
[INFO] [stderr]  --> src/draw.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |        ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.81s
[INFO] running `"docker" "inspect" "cac4c50db76ad7632bcd149adef661e8df2a0772a1c0023554c89b6d4922cab4"`
[INFO] running `"docker" "rm" "-f" "cac4c50db76ad7632bcd149adef661e8df2a0772a1c0023554c89b6d4922cab4"`
[INFO] [stdout] cac4c50db76ad7632bcd149adef661e8df2a0772a1c0023554c89b6d4922cab4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a908c1be3900131b655acf29dc4c3cfdef4fdb6f52e129d5083bb24a9785fe4
[INFO] running `"docker" "start" "-a" "2a908c1be3900131b655acf29dc4c3cfdef4fdb6f52e129d5083bb24a9785fe4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_mandelbrot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.89s
[INFO] running `"docker" "inspect" "2a908c1be3900131b655acf29dc4c3cfdef4fdb6f52e129d5083bb24a9785fe4"`
[INFO] running `"docker" "rm" "-f" "2a908c1be3900131b655acf29dc4c3cfdef4fdb6f52e129d5083bb24a9785fe4"`
[INFO] [stdout] 2a908c1be3900131b655acf29dc4c3cfdef4fdb6f52e129d5083bb24a9785fe4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f133e1b146a194608d3427b4f149eff5e19a61a26dd1cfa81cd7ace88eab0cb2
[INFO] running `"docker" "start" "-a" "f133e1b146a194608d3427b4f149eff5e19a61a26dd1cfa81cd7ace88eab0cb2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/draw.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn draw(color_function: &Fn(u32, u32) -> image::Rgb<u8>) -> image::RgbImage {
[INFO] [stderr]   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32, u32) -> image::Rgb<u8>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn mandelbrot_function(c: Complex64) -> Box<Fn(Complex64) -> Complex64> {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Complex64) -> Complex64`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mandelbrot.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |     function: &Fn(T) -> T,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Fn(T) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_mandelbrot-186ef54477202080
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test mandelbrot::tests::mandelbrot_function_evaluates_correctly_for_complex_numbers ... ok
[INFO] [stdout] test mandelbrot::tests::mandelbrot_function_does_not_diverge_for_some_constant ... ok
[INFO] [stdout] test mandelbrot::tests::mandelbrot_function_diverges_for_some_constant ... ok
[INFO] [stdout] test mandelbrot::tests::measure_divergence_returns_none_when_number_of_iterations_exceeds_maximum ... ok
[INFO] [stdout] test draw::tests::float_range_iterates_over_range ... ok
[INFO] [stdout] test mandelbrot::tests::measure_divergence_returns_number_of_iterations_after_which_value_is_out_of_bound ... ok
[INFO] [stdout] test draw::tests::draw_creates_rbg_image_from_color_function ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f133e1b146a194608d3427b4f149eff5e19a61a26dd1cfa81cd7ace88eab0cb2"`
[INFO] running `"docker" "rm" "-f" "f133e1b146a194608d3427b4f149eff5e19a61a26dd1cfa81cd7ace88eab0cb2"`
[INFO] [stdout] f133e1b146a194608d3427b4f149eff5e19a61a26dd1cfa81cd7ace88eab0cb2