Sep 04 09:30:49.626 INFO checking num-bigint-0.2.0 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 09:30:49.626 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 09:30:49.626 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-2/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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 +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 09:30:49.793 INFO blam! c343376942f78e6aa895a4a608e5083ff494fc81548699d6d6da1c596f00f5cd
Sep 04 09:30:49.795 INFO running `"docker" "start" "-a" "c343376942f78e6aa895a4a608e5083ff494fc81548699d6d6da1c596f00f5cd"`
Sep 04 09:30:50.539 INFO kablam!    Compiling num-bigint v0.2.0 (file:///source)
Sep 04 09:30:59.050 INFO kablam! error[E0464]: multiple matching crates for `rand`
Sep 04 09:30:59.050 INFO kablam!  --> benches/gcd.rs:7:1
Sep 04 09:30:59.050 INFO kablam!   |
Sep 04 09:30:59.050 INFO kablam! 7 | extern crate rand;
Sep 04 09:30:59.051 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 04 09:30:59.051 INFO kablam!   |
Sep 04 09:30:59.051 INFO kablam!   = note: candidates:
Sep 04 09:30:59.051 INFO kablam!           crate `rand`: /rustup-home/toolchains/28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-6c773f4118396f49.rlib
Sep 04 09:30:59.051 INFO kablam!           crate `rand`: /rustup-home/toolchains/28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-81e4412e3a960fcb.rlib
Sep 04 09:30:59.051 INFO kablam! 
Sep 04 09:30:59.051 INFO kablam! error[E0463]: can't find crate for `rand`
Sep 04 09:30:59.052 INFO kablam!  --> benches/gcd.rs:7:1
Sep 04 09:30:59.052 INFO kablam!   |
Sep 04 09:30:59.052 INFO kablam! 7 | extern crate rand;
Sep 04 09:30:59.052 INFO kablam!   | ^^^^^^^^^^^^^^^^^^ can't find crate
Sep 04 09:30:59.052 INFO kablam! 
Sep 04 09:30:59.052 INFO kablam! error: aborting due to 2 previous errors
Sep 04 09:30:59.052 INFO kablam! 
Sep 04 09:30:59.052 INFO kablam! Some errors occurred: E0463, E0464.
Sep 04 09:30:59.052 INFO kablam! For more information about an error, try `rustc --explain E0463`.
Sep 04 09:30:59.076 INFO kablam! error: Could not compile `num-bigint`.
Sep 04 09:30:59.077 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 04 09:31:03.446 INFO kablam! warning: unused arithmetic operation which must be used
Sep 04 09:31:03.446 INFO kablam!    --> tests/biguint.rs:769:5
Sep 04 09:31:03.446 INFO kablam!     |
Sep 04 09:31:03.446 INFO kablam! 769 |     a - b;
Sep 04 09:31:03.446 INFO kablam!     |     ^^^^^
Sep 04 09:31:03.446 INFO kablam!     |
Sep 04 09:31:03.446 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 04 09:31:03.446 INFO kablam! 
Sep 04 09:31:03.544 INFO kablam! error: build failed
Sep 04 09:31:03.546 INFO kablam! su: No module specific data is present
Sep 04 09:31:03.883 INFO running `"docker" "rm" "-f" "c343376942f78e6aa895a4a608e5083ff494fc81548699d6d6da1c596f00f5cd"`
Sep 04 09:31:03.977 INFO blam! c343376942f78e6aa895a4a608e5083ff494fc81548699d6d6da1c596f00f5cd