[INFO] cloning repository https://github.com/ZivxXxY/mandelbrot [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZivxXxY/mandelbrot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZivxXxY%2Fmandelbrot", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZivxXxY%2Fmandelbrot'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 67eaa51d0024acbca386ffa5e0bc16fd206d2cfb [INFO] checking ZivxXxY/mandelbrot against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZivxXxY%2Fmandelbrot" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ZivxXxY/mandelbrot on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/ZivxXxY/mandelbrot [INFO] finished tweaking git repo https://github.com/ZivxXxY/mandelbrot [INFO] tweaked toml for git repo https://github.com/ZivxXxY/mandelbrot written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/ZivxXxY/mandelbrot already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded num-rational v0.2.2 [INFO] [stderr] Downloaded crossbeam v0.7.2 [INFO] [stderr] Downloaded syn v0.15.43 [INFO] [stderr] Downloaded gif v0.10.2 [INFO] [stderr] Downloaded image v0.22.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6fe851c747efc1431c0dec38d813be0ef7c8e20d79082031a180a24d6da45e79 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6fe851c747efc1431c0dec38d813be0ef7c8e20d79082031a180a24d6da45e79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6fe851c747efc1431c0dec38d813be0ef7c8e20d79082031a180a24d6da45e79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6fe851c747efc1431c0dec38d813be0ef7c8e20d79082031a180a24d6da45e79", kill_on_drop: false }` [INFO] [stdout] 6fe851c747efc1431c0dec38d813be0ef7c8e20d79082031a180a24d6da45e79 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6b3dea6c4e4ea025dfd0da38c68d2ecb1d1331964f9ab0a79dbf6da7eede3cc4 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "6b3dea6c4e4ea025dfd0da38c68d2ecb1d1331964f9ab0a79dbf6da7eede3cc4", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.43 [INFO] [stderr] Compiling rayon-core v1.5.0 [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Checking either v1.5.2 [INFO] [stderr] Checking color_quant v1.0.1 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Compiling num-complex v0.2.3 [INFO] [stderr] Checking crc32fast v1.2.0 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking num-integer v0.1.41 [INFO] [stderr] Checking gif v0.10.2 [INFO] [stderr] Checking num-bigint v0.2.2 [INFO] [stderr] Checking num-iter v0.1.39 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking crossbeam-deque v0.6.3 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking png v0.15.0 [INFO] [stderr] Checking crossbeam v0.7.2 [INFO] [stderr] Checking num-rational v0.2.2 [INFO] [stderr] Checking rayon v1.1.0 [INFO] [stderr] Checking num v0.2.0 [INFO] [stderr] Checking jpeg-decoder v0.1.15 [INFO] [stderr] Checking tiff v0.3.1 [INFO] [stderr] Checking image v0.22.1 [INFO] [stderr] Checking mandelbrot v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:136:9 [INFO] [stdout] | [INFO] [stdout] 136 | / crossbeam::scope(|spawner| { [INFO] [stdout] 137 | | for (i, band) in bands.into_iter().enumerate() { [INFO] [stdout] 138 | | let top = rows_per_band * i; [INFO] [stdout] 139 | | let height = band.len() / bounds.0; [INFO] [stdout] ... | [INFO] [stdout] 147 | | } [INFO] [stdout] 148 | | }); [INFO] [stdout] | |___________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:136:9 [INFO] [stdout] | [INFO] [stdout] 136 | / crossbeam::scope(|spawner| { [INFO] [stdout] 137 | | for (i, band) in bands.into_iter().enumerate() { [INFO] [stdout] 138 | | let top = rows_per_band * i; [INFO] [stdout] 139 | | let height = band.len() / bounds.0; [INFO] [stdout] ... | [INFO] [stdout] 147 | | } [INFO] [stdout] 148 | | }); [INFO] [stdout] | |___________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 48.46s [INFO] running `Command { std: "docker" "inspect" "6b3dea6c4e4ea025dfd0da38c68d2ecb1d1331964f9ab0a79dbf6da7eede3cc4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6b3dea6c4e4ea025dfd0da38c68d2ecb1d1331964f9ab0a79dbf6da7eede3cc4", kill_on_drop: false }` [INFO] [stdout] 6b3dea6c4e4ea025dfd0da38c68d2ecb1d1331964f9ab0a79dbf6da7eede3cc4