Sep 04 09:30:48.756 INFO checking num-bigint-0.2.0 against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 04 09:30:48.756 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 04 09:30:48.756 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-3/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 09:30:48.921 INFO blam! cab0f2ae2bd3e1d1d977b35cb6c09a9b03a2f14c6bc0015b57e55fd7059b771f
Sep 04 09:30:48.923 INFO running `"docker" "start" "-a" "cab0f2ae2bd3e1d1d977b35cb6c09a9b03a2f14c6bc0015b57e55fd7059b771f"`
Sep 04 09:30:49.760 INFO kablam!    Compiling num-bigint v0.2.0 (file:///source)
Sep 04 09:30:58.821 INFO kablam! error[E0464]: multiple matching crates for `rand`
Sep 04 09:30:58.822 INFO kablam!  --> benches/gcd.rs:7:1
Sep 04 09:30:58.822 INFO kablam!   |
Sep 04 09:30:58.822 INFO kablam! 7 | extern crate rand;
Sep 04 09:30:58.822 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 04 09:30:58.822 INFO kablam!   |
Sep 04 09:30:58.822 INFO kablam!   = note: candidates:
Sep 04 09:30:58.822 INFO kablam!           crate `rand`: /rustup-home/toolchains/6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-a24320635b0a049f.rlib
Sep 04 09:30:58.823 INFO kablam!           crate `rand`: /rustup-home/toolchains/6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-779f7dbe13ed9f60.rlib
Sep 04 09:30:58.823 INFO kablam! 
Sep 04 09:30:58.823 INFO kablam! error[E0463]: can't find crate for `rand`
Sep 04 09:30:58.823 INFO kablam!  --> benches/gcd.rs:7:1
Sep 04 09:30:58.823 INFO kablam!   |
Sep 04 09:30:58.823 INFO kablam! 7 | extern crate rand;
Sep 04 09:30:58.823 INFO kablam!   | ^^^^^^^^^^^^^^^^^^ can't find crate
Sep 04 09:30:58.823 INFO kablam! 
Sep 04 09:30:58.824 INFO kablam! error: aborting due to 2 previous errors
Sep 04 09:30:58.824 INFO kablam! 
Sep 04 09:30:58.824 INFO kablam! Some errors occurred: E0463, E0464.
Sep 04 09:30:58.824 INFO kablam! For more information about an error, try `rustc --explain E0463`.
Sep 04 09:30:58.830 INFO kablam! error: Could not compile `num-bigint`.
Sep 04 09:30:58.831 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 09:31:03.935 INFO kablam! warning: unused arithmetic operation which must be used
Sep 04 09:31:03.935 INFO kablam!    --> tests/biguint.rs:769:5
Sep 04 09:31:03.935 INFO kablam!     |
Sep 04 09:31:03.936 INFO kablam! 769 |     a - b;
Sep 04 09:31:03.936 INFO kablam!     |     ^^^^^
Sep 04 09:31:03.936 INFO kablam!     |
Sep 04 09:31:03.936 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 09:31:03.936 INFO kablam! 
Sep 04 09:31:04.011 INFO kablam! error: build failed
Sep 04 09:31:04.013 INFO kablam! su: No module specific data is present
Sep 04 09:31:04.367 INFO running `"docker" "rm" "-f" "cab0f2ae2bd3e1d1d977b35cb6c09a9b03a2f14c6bc0015b57e55fd7059b771f"`
Sep 04 09:31:04.477 INFO blam! cab0f2ae2bd3e1d1d977b35cb6c09a9b03a2f14c6bc0015b57e55fd7059b771f