[INFO] cloning repository https://github.com/benmkw/zpng_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benmkw/zpng_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenmkw%2Fzpng_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenmkw%2Fzpng_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a68240b049cf875c259ef20126395055dcd85b6
[INFO] testing benmkw/zpng_rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenmkw%2Fzpng_rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benmkw/zpng_rs on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benmkw/zpng_rs
[INFO] finished tweaking git repo https://github.com/benmkw/zpng_rs
[INFO] tweaked toml for git repo https://github.com/benmkw/zpng_rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/benmkw/zpng_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded color-backtrace v0.4.2
[INFO] [stderr]   Downloaded rustc-demangle v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 831d6ed963afbba5e20aeb22c0483ee4f5337fda8be2b9ab267a36221f6b7f37
[INFO] running `Command { std: "docker" "start" "-a" "831d6ed963afbba5e20aeb22c0483ee4f5337fda8be2b9ab267a36221f6b7f37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "831d6ed963afbba5e20aeb22c0483ee4f5337fda8be2b9ab267a36221f6b7f37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "831d6ed963afbba5e20aeb22c0483ee4f5337fda8be2b9ab267a36221f6b7f37", kill_on_drop: false }`
[INFO] [stdout] 831d6ed963afbba5e20aeb22c0483ee4f5337fda8be2b9ab267a36221f6b7f37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b577a98b8cd1c34d2b3135692eaba5c5ca399a431ffc769827aa9ed1417bc03
[INFO] running `Command { std: "docker" "start" "-a" "9b577a98b8cd1c34d2b3135692eaba5c5ca399a431ffc769827aa9ed1417bc03", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.8.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling gimli v0.22.0
[INFO] [stderr]    Compiling adler v0.2.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.17
[INFO] [stderr]    Compiling object v0.21.1
[INFO] [stderr]    Compiling argh_shared v0.1.1
[INFO] [stderr]    Compiling weezl v0.1.1
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling bytemuck v1.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling gif v0.11.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling png v0.16.7
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling addr2line v0.13.0
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling backtrace v0.3.53
[INFO] [stderr]    Compiling color-backtrace v0.4.2
[INFO] [stderr]    Compiling argh_derive v0.1.1
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling argh v0.1.3
[INFO] [stderr]    Compiling image v0.23.10
[INFO] [stderr]    Compiling zstd-safe v2.0.5+zstd.1.4.5
[INFO] [stderr]    Compiling zstd v0.5.3+zstd.1.4.5
[INFO] [stderr]    Compiling zpng_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(const_generics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zpng_rs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9b577a98b8cd1c34d2b3135692eaba5c5ca399a431ffc769827aa9ed1417bc03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b577a98b8cd1c34d2b3135692eaba5c5ca399a431ffc769827aa9ed1417bc03", kill_on_drop: false }`
[INFO] [stdout] 9b577a98b8cd1c34d2b3135692eaba5c5ca399a431ffc769827aa9ed1417bc03