[INFO] crate noisy 0.0.3 is already in cache
[INFO] extracting crate noisy 0.0.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/noisy/0.0.3
[INFO] extracting crate noisy 0.0.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/noisy/0.0.3
[INFO] validating manifest of noisy-0.0.3 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 noisy-0.0.3 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 noisy-0.0.3
[INFO] removed 5 missing examples
[INFO] finished frobbing noisy-0.0.3
[INFO] frobbed toml for noisy-0.0.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/noisy/0.0.3/Cargo.toml
[INFO] started frobbing noisy-0.0.3
[INFO] removed 5 missing examples
[INFO] finished frobbing noisy-0.0.3
[INFO] frobbed toml for noisy-0.0.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/noisy/0.0.3/Cargo.toml
[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 noisy-0.0.3 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/noisy/0.0.3:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5f67f6092493c983cadd1bcbe5dae1d3fd2710d56958310842a7bba80d26c32c
[INFO] running `"docker" "start" "-a" "5f67f6092493c983cadd1bcbe5dae1d3fd2710d56958310842a7bba80d26c32c"`
[INFO] [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently
[INFO] [stderr] disables Cargo from automatically inferring other example targets.
[INFO] [stderr] This inference behavior will change in the Rust 2018 edition and the following
[INFO] [stderr] files will be included as a example target:
[INFO] [stderr] 
[INFO] [stderr] * /opt/crater/workdir/examples/simplex1d.rs
[INFO] [stderr] * /opt/crater/workdir/examples/fromseed.rs
[INFO] [stderr] * /opt/crater/workdir/examples/checkerboard2d.rs
[INFO] [stderr] * /opt/crater/workdir/examples/simplex2d.rs
[INFO] [stderr] * /opt/crater/workdir/examples/checkerboard1d.rs
[INFO] [stderr] 
[INFO] [stderr] This is likely to break cargo build or cargo test as these files may not be
[INFO] [stderr] ready to be compiled as a example target today. You can future-proof yourself
[INFO] [stderr] and disable this warning by adding `autoexamples = false` to your [package]
[INFO] [stderr] section. You may also move the files to a location where Cargo would not
[INFO] [stderr] automatically infer them to be a target, such as in subfolders.
[INFO] [stderr] 
[INFO] [stderr] For more information on this warning you can consult
[INFO] [stderr] https://github.com/rust-lang/cargo/issues/5330
[INFO] [stderr]    Compiling noisy v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::rand`
[INFO] [stderr]  --> src/gen/simplex.rs:9:10
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::rand::{ Rng, XorShiftRng, weak_rng };
[INFO] [stderr]   |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::rand`
[INFO] [stderr]  --> src/gen/perlin.rs:8:10
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::rand::{ Rng, XorShiftRng, weak_rng };
[INFO] [stderr]   |          ^^^^ could not find `rand` in `std`
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `std::num::Float`
[INFO] [stderr]  --> src/gen/checkerboard.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::num::Float;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(rand)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stderr]   --> src/lib.rs:65:1
[INFO] [stderr]    |
[INFO] [stderr] 65 | extern crate rand;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/27812
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 5 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `noisy`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5f67f6092493c983cadd1bcbe5dae1d3fd2710d56958310842a7bba80d26c32c"`
[INFO] running `"docker" "rm" "-f" "5f67f6092493c983cadd1bcbe5dae1d3fd2710d56958310842a7bba80d26c32c"`
[INFO] [stdout] 5f67f6092493c983cadd1bcbe5dae1d3fd2710d56958310842a7bba80d26c32c