[INFO] updating cached repository https://github.com/ponkore/screenshot-example
[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] 849348a77e3d5f5cfd974fb7ede22be64dddbc06
[INFO] testing ponkore/screenshot-example against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponkore%2Fscreenshot-example" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ponkore/screenshot-example on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ponkore/screenshot-example
[INFO] finished tweaking git repo https://github.com/ponkore/screenshot-example
[INFO] tweaked toml for git repo https://github.com/ponkore/screenshot-example written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ponkore/screenshot-example already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] ba670b251f7acf00b965a1aea05505e0d63538784d826c9a223b3c8a33d49a36
[INFO] running `"docker" "start" "-a" "ba670b251f7acf00b965a1aea05505e0d63538784d826c9a223b3c8a33d49a36"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling screenshot v0.0.7
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling deflate v0.7.2
[INFO] [stderr]    Compiling gif v0.9.0
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling jpeg-decoder v0.1.11
[INFO] [stderr] error[E0432]: unresolved import `ffi`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/screenshot-0.0.7/src/lib.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub use ffi::{get_screenshot};
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         unresolved import
[INFO] [stderr]    |         help: a similar path exists: `std::ffi`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/screenshot-0.0.7/src/lib.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | #![feature(core_intrinsics, convert)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `screenshot`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ba670b251f7acf00b965a1aea05505e0d63538784d826c9a223b3c8a33d49a36"`
[INFO] running `"docker" "rm" "-f" "ba670b251f7acf00b965a1aea05505e0d63538784d826c9a223b3c8a33d49a36"`
[INFO] [stdout] ba670b251f7acf00b965a1aea05505e0d63538784d826c9a223b3c8a33d49a36