[INFO] updating cached repository Byron/catchit-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Byron/catchit-rs
[INFO] [stderr]  * branch              HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Byron/catchit-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/catchit-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/catchit-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Byron/catchit-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Byron/catchit-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Byron/catchit-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6e79b10923aa877f81bb0c79e02fb08b29d4ddbc
[INFO] sha for GitHub repo Byron/catchit-rs: 6e79b10923aa877f81bb0c79e02fb08b29d4ddbc
[INFO] validating manifest of Byron/catchit-rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Byron/catchit-rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Byron/catchit-rs
[INFO] finished frobbing Byron/catchit-rs
[INFO] frobbed toml for Byron/catchit-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/catchit-rs/Cargo.toml
[INFO] started frobbing Byron/catchit-rs
[INFO] finished frobbing Byron/catchit-rs
[INFO] frobbed toml for Byron/catchit-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Byron/catchit-rs/Cargo.toml
[INFO] crate Byron/catchit-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/catchit-rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Byron/catchit-rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/catchit-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0c7b9d28d1abba78606afad6a80213083da6716fd011736f942e5c6a63006440
[INFO] running `"docker" "start" "-a" "0c7b9d28d1abba78606afad6a80213083da6716fd011736f942e5c6a63006440"`
[INFO] [stderr]    Compiling piston-float v1.0.0
[INFO] [stderr]    Compiling piston-graphics_api_version v0.2.0
[INFO] [stderr]    Compiling piston-texture v0.7.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling draw_state v0.8.0
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling piston-viewport v1.0.0
[INFO] [stderr]    Compiling vecmath v1.0.0
[INFO] [stderr]    Compiling rusttype v0.7.7
[INFO] [stderr]    Compiling shader_version v0.6.0
[INFO] [stderr]    Compiling pistoncore-input v0.28.0
[INFO] [stderr]    Compiling gfx_core v0.8.3
[INFO] [stderr]    Compiling andrew v0.2.1
[INFO] [stderr]    Compiling piston2d-graphics v0.34.0
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.4.6
[INFO] [stderr]    Compiling gfx_gl v0.5.0
[INFO] [stderr]    Compiling pistoncore-window v0.44.0
[INFO] [stderr]    Compiling pistoncore-event_loop v0.49.0
[INFO] [stderr]    Compiling piston v0.49.0
[INFO] [stderr]    Compiling winit v0.19.2
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.68.0
[INFO] [stderr]    Compiling glutin v0.21.0
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.63.0
[INFO] [stderr]    Compiling gfx v0.17.1
[INFO] [stderr]    Compiling gfx_device_gl v0.15.5
[INFO] [stderr]    Compiling piston-gfx_texture v0.38.0
[INFO] [stderr]    Compiling piston2d-gfx_graphics v0.64.0
[INFO] [stderr]    Compiling piston_window v0.103.0
[INFO] [stderr]    Compiling catchit v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0412]: cannot find type `XorShiftRng` in module `rand`
[INFO] [stderr]   --> src/engine.rs:36:24
[INFO] [stderr]    |
[INFO] [stderr] 36 |     rng: RefCell<rand::XorShiftRng>,
[INFO] [stderr]    |                        ^^^^^^^^^^^ not found in `rand`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `XorShiftRng` in module `rand`
[INFO] [stderr]   --> src/engine.rs:42:45
[INFO] [stderr]    |
[INFO] [stderr] 42 |                             rng: &mut rand::XorShiftRng)
[INFO] [stderr]    |                                             ^^^^^^^^^^^ not found in `rand`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in module `rand`
[INFO] [stderr]   --> src/engine.rs:75:29
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let mut rng = rand::weak_rng();
[INFO] [stderr]    |                             ^^^^^^^^ not found in `rand`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `XorShiftRng` in module `rand`
[INFO] [stderr]    --> src/engine.rs:112:37
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn new_obstacle(rng: &mut rand::XorShiftRng, s: &mut State, min_distance: Scalar) {
[INFO] [stderr]     |                                     ^^^^^^^^^^^ not found in `rand`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `weak_rng` in module `rand`
[INFO] [stderr]    --> src/engine.rs:193:37
[INFO] [stderr]     |
[INFO] [stderr] 193 |             rng: RefCell::new(rand::weak_rng()),
[INFO] [stderr]     |                                     ^^^^^^^^ not found in `rand`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/engine.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::{self, Rng};
[INFO] [stderr]   |                  ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `catchit`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0c7b9d28d1abba78606afad6a80213083da6716fd011736f942e5c6a63006440"`
[INFO] running `"docker" "rm" "-f" "0c7b9d28d1abba78606afad6a80213083da6716fd011736f942e5c6a63006440"`
[INFO] [stdout] 0c7b9d28d1abba78606afad6a80213083da6716fd011736f942e5c6a63006440