[INFO] cloning repository https://github.com/exoticorn/pngeq
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/exoticorn/pngeq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexoticorn%2Fpngeq"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexoticorn%2Fpngeq'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 374001a7e62f9fbba78ac8588bc5cf2d53e40746
[INFO] checking exoticorn/pngeq against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexoticorn%2Fpngeq" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/exoticorn/pngeq on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/exoticorn/pngeq
[INFO] finished tweaking git repo https://github.com/exoticorn/pngeq
[INFO] tweaked toml for git repo https://github.com/exoticorn/pngeq written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/exoticorn/pngeq already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rgb v0.5.0
[INFO] [stderr]   Downloaded lodepng v0.8.1
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 915f82ac6d0c863134182f1e2911352a4ce2a4cf45cd0ab4be406e150832aee3
[INFO] running `"docker" "start" "-a" "915f82ac6d0c863134182f1e2911352a4ce2a4cf45cd0ab4be406e150832aee3"`
[INFO] [stderr]     Checking libc v0.2.15
[INFO] [stderr]    Compiling lodepng v0.8.1
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking strsim v0.5.1
[INFO] [stderr]     Checking rgb v0.5.0
[INFO] [stderr]     Checking unicode-width v0.1.3
[INFO] [stderr]     Checking ansi_term v0.8.0
[INFO] [stderr]     Checking exoquant v0.2.0
[INFO] [stderr] error[E0606]: casting `f64` as `u8` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exoquant-0.2.0/src/colorspace.rs:30:20
[INFO] [stderr]    |
[INFO] [stderr] 30 |         Color::new((c.r * 255.0).max(0.0).min(255.0) as u8,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u8` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exoquant-0.2.0/src/colorspace.rs:31:20
[INFO] [stderr]    |
[INFO] [stderr] 31 |                    (c.g * 255.0).max(0.0).min(255.0) as u8,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u8` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exoquant-0.2.0/src/colorspace.rs:32:20
[INFO] [stderr]    |
[INFO] [stderr] 32 |                    (c.b * 255.0).max(0.0).min(255.0) as u8,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u8` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exoquant-0.2.0/src/colorspace.rs:33:20
[INFO] [stderr]    |
[INFO] [stderr] 33 |                    (c.a * 255.0).max(0.0).min(255.0) as u8)
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `usize` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/exoquant-0.2.0/src/basicapi.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         (num_colors as f64).sqrt().round() as usize
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `exoquant`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "915f82ac6d0c863134182f1e2911352a4ce2a4cf45cd0ab4be406e150832aee3"`
[INFO] running `"docker" "rm" "-f" "915f82ac6d0c863134182f1e2911352a4ce2a4cf45cd0ab4be406e150832aee3"`
[INFO] [stdout] 915f82ac6d0c863134182f1e2911352a4ce2a4cf45cd0ab4be406e150832aee3